commit 079b13a459c1b1b5fda9814af9a6dd3b2f9672a4 · dunkirk.sh/battleship-arena

.gitignore

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       .ssh/

     

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       submissions/

     

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       *.db

     

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       battleship-arena

     

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       *.log

     

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       build/

+51

AGENTS.md

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       # Development Notes

     

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       ## Architecture

     

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       - **main.go** - SSH/HTTP server initialization with Wish and Bubble Tea

     

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       - **model.go** - Terminal UI (TUI) for SSH sessions

     

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       - **database.go** - SQLite storage for submissions and results

     

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       - **web.go** - HTTP leaderboard with HTML template

     

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       - **runner.go** - Compiles and tests C++ submissions against battleship library

     

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       - **scp.go** - SCP upload middleware for file submissions

     

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       - **worker.go** - Background processor (runs every 30s)

     

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       ## File Upload

     

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       Students upload via SCP:

     

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       ```bash

     

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       scp -P 2222 memory_functions_name.cpp username@host:~/

     

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       ```

     

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       Files must match pattern `memory_functions_*.cpp`

     

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       ## Testing Flow

     

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       1. Student uploads file via SCP → saved to `./submissions/username/`

     

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       2. Student SSH in and selects "Test Submission"

     

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       3. Worker picks up pending submission

     

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       4. Compiles with battleship library: `g++ battle_light.cpp battleship_light.cpp memory_functions_*.cpp`

     

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       5. Runs benchmark: `./battle --benchmark 100`

     

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       6. Parses results and updates database

     

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       7. Leaderboard shows updated rankings

     

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       ## Configuration

     

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       Edit `runner.go` line 11:

     

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       ```go

     

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       const battleshipRepoPath = "/path/to/cs1210-battleship"

     

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       ```

     

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       ## Building

     

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       ```bash

     

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       make build    # Build binary

     

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       make run      # Build and run

     

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       make gen-key  # Generate SSH host key

     

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       ```

     

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       ## Deployment

     

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       See `Dockerfile`, `docker-compose.yml`, or `battleship-arena.service` for systemd.

     

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       Web runs on port 8080, SSH on port 2222.

+25

LICENSE.md

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       The MIT License (MIT)

     

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       =====================

     

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       Copyright © `2025` `Kieran Klukas`

     

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       Permission is hereby granted, free of charge, to any person

     

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       obtaining a copy of this software and associated documentation

     

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       files (the “Software”), to deal in the Software without

     

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       restriction, including without limitation the rights to use,

     

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       copy, modify, merge, publish, distribute, sublicense, and/or sell

     

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       copies of the Software, and to permit persons to whom the

     

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       Software is furnished to do so, subject to the following

     

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       conditions:

     

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       The above copyright notice and this permission notice shall be

     

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       included in all copies or substantial portions of the Software.

     

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       THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND,

     

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       EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

     

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       OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

     

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       NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

     

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       HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

     

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       WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

     

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       FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

     

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       OTHER DEALINGS IN THE SOFTWARE.

+63

Makefile

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       .PHONY: build run clean test docker-build docker-run help

     

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       # Build the battleship arena server

     

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       build:

     

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       	@echo "Building battleship-arena..."

     

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       	@go build -o battleship-arena

     

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       # Run the server

     

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       run: build

     

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       	@echo "Starting battleship-arena..."

     

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       	@./battleship-arena

     

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       # Clean build artifacts

     

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       clean:

     

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       	@echo "Cleaning..."

     

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       	@rm -f battleship-arena

     

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       	@rm -rf submissions/ .ssh/ *.db

     

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       # Run tests

     

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       test:

     

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       	@echo "Running tests..."

     

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       	@go test -v ./...

     

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       # Generate SSH host key

     

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       gen-key:

     

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       	@echo "Generating SSH host key..."

     

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       	@mkdir -p .ssh

     

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       	@ssh-keygen -t ed25519 -f .ssh/battleship_arena -N ""

     

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       # Format code

     

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       fmt:

     

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       	@echo "Formatting code..."

     

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       	@go fmt ./...

     

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       # Lint code

     

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       lint:

     

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       	@echo "Linting code..."

     

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       	@golangci-lint run

     

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       # Update dependencies

     

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       deps:

     

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       	@echo "Updating dependencies..."

     

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       	@go mod tidy

     

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       	@go mod download

     

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       # Build for production (optimized)

     

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       build-prod:

     

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       	@echo "Building for production..."

     

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       	@CGO_ENABLED=1 go build -ldflags="-s -w" -o battleship-arena

     

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       # Show help

     

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       help:

     

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       	@echo "Available targets:"

     

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       	@echo "  build       - Build the server"

     

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       	@echo "  run         - Build and run the server"

     

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       	@echo "  clean       - Clean build artifacts"

     

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       	@echo "  test        - Run tests"

     

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       	@echo "  gen-key     - Generate SSH host key"

     

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       	@echo "  fmt         - Format code"

     

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       	@echo "  lint        - Lint code"

     

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       	@echo "  deps        - Update dependencies"

     

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       	@echo "  build-prod  - Build optimized production binary"

     

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       	@echo "  help        - Show this help"

+41

README.md

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       # Battleship Arena

     

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       This is a service I made to allow students in my `cs-1210` class to benchmark their battleship programs against each other.

     

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       ## I just want to get on the leaderboard; How?

     

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       First ssh into the battleship server and it will ask you a few questions to set up your account. Then scp your battleship file onto the server!

     

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       ```bash

     

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       ssh battleship.dunkirk.sh

     

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       scp memory_functions_yourname.cpp battleship.dunkirk.sh

     

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       ```

     

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       ## Development

     

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       Built with Go using [Wish](https://github.com/charmbracelet/wish), [Bubble Tea](https://github.com/charmbracelet/bubbletea), and [Lipgloss](https://github.com/charmbracelet/lipgloss).

     

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       ```bash

     

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       # Build and run

     

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       make build

     

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       make run

     

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       # Generate SSH host key

     

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       make gen-key

     

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       ```

     

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       See `AGENTS.md` for architecture details.

     

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       The main repo is [the tangled repo](https://tangled.org/dunkirk.sh/battleship-arena) and the github is just a mirror.

     

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       <p align="center">

     

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       	<img src="https://raw.githubusercontent.com/taciturnaxolotl/carriage/master/.github/images/line-break.svg" />

     

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       </p>

     

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       <p align="center">

     

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       	&copy 2025-present <a href="https://github.com/taciturnaxolotl">Kieran Klukas</a>

     

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       </p>

     

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       <p align="center">

     

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       	<a href="https://github.com/taciturnaxolotl/battleship-arena/blob/main/LICENSE.md"><img src="https://img.shields.io/static/v1.svg?style=for-the-badge&label=License&message=MIT&logoColor=d9e0ee&colorA=363a4f&colorB=b7bdf8"/></a>

     

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       </p>

+140

database.go

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       package main

     

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       import (

     

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       	"database/sql"

     

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       	"time"

     

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       	_ "github.com/mattn/go-sqlite3"

     

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       )

     

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       var globalDB *sql.DB

     

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       type LeaderboardEntry struct {

     

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       	Username  string

     

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       	Wins      int

     

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       	Losses    int

     

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       	AvgMoves  float64

     

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       	LastPlayed time.Time

     

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       }

     

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       +
       

     

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       type Submission struct {

     

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       	ID         int

     

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       	Username   string

     

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       +
       	Filename   string

     

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       	UploadTime time.Time

     

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       +
       	Status     string // pending, testing, completed, failed

     

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       }

     

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       +
       

     

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       func initDB(path string) (*sql.DB, error) {

     

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       	db, err := sql.Open("sqlite3", path)

     

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       	if err != nil {

     

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       		return nil, err

     

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       	}

     

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       +
       

     

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       	schema := `

     

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       	CREATE TABLE IF NOT EXISTS submissions (

     

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       		id INTEGER PRIMARY KEY AUTOINCREMENT,

     

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       		username TEXT NOT NULL,

     

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       		filename TEXT NOT NULL,

     

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       		upload_time TIMESTAMP DEFAULT CURRENT_TIMESTAMP,

     

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       		status TEXT DEFAULT 'pending'

     

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       	);

     

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       +
       

     

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       	CREATE TABLE IF NOT EXISTS results (

     

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       		id INTEGER PRIMARY KEY AUTOINCREMENT,

     

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       +
       		submission_id INTEGER,

     

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       +
       		opponent TEXT,

     

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       +
       		result TEXT, -- win, loss, tie

     

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       		moves INTEGER,

     

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       		timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP,

     

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       		FOREIGN KEY (submission_id) REFERENCES submissions(id)

     

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       	);

     

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       +
       

     

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       	CREATE INDEX IF NOT EXISTS idx_results_submission ON results(submission_id);

     

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       	CREATE INDEX IF NOT EXISTS idx_submissions_username ON submissions(username);

     

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       	CREATE INDEX IF NOT EXISTS idx_submissions_status ON submissions(status);

     

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       	`

     

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       +
       

     

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       	_, err = db.Exec(schema)

     

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       	return db, err

     

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       }

     

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       +
       

     

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       func getLeaderboard(limit int) ([]LeaderboardEntry, error) {

     

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       	query := `

     

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       	SELECT 

     

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       +
       		s.username,

     

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       +
       		SUM(CASE WHEN r.result = 'win' THEN 1 ELSE 0 END) as wins,

     

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       +
       		SUM(CASE WHEN r.result = 'loss' THEN 1 ELSE 0 END) as losses,

     

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       		AVG(r.moves) as avg_moves,

     

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       +
       		MAX(r.timestamp) as last_played

     

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       	FROM submissions s

     

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       	JOIN results r ON s.id = r.submission_id

     

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       	GROUP BY s.username

     

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       	ORDER BY wins DESC, losses ASC, avg_moves ASC

     

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       	LIMIT ?

     

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       +
       	`

     

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       +
       

     

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       	rows, err := globalDB.Query(query, limit)

     

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       	if err != nil {

     

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       		return nil, err

     

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       	}

     

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       	defer rows.Close()

     

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       +
       

     

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       	var entries []LeaderboardEntry

     

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       +
       	for rows.Next() {

     

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       		var e LeaderboardEntry

     

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       		err := rows.Scan(&e.Username, &e.Wins, &e.Losses, &e.AvgMoves, &e.LastPlayed)

     

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       +
       		if err != nil {

     

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       			return nil, err

     

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       		}

     

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       		entries = append(entries, e)

     

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       	}

     

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       +
       

     

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       	return entries, rows.Err()

     

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       +
       }

     

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       +
       

     

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       func addSubmission(username, filename string) (int64, error) {

     

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       	result, err := globalDB.Exec(

     

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       +
       		"INSERT INTO submissions (username, filename) VALUES (?, ?)",

     

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       +
       		username, filename,

     

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       +
       	)

     

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       	if err != nil {

     

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       		return 0, err

     

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       +
       	}

     

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       	return result.LastInsertId()

     

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       +
       }

     

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       +
       

     

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       func addResult(submissionID int, opponent, result string, moves int) error {

     

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       	_, err := globalDB.Exec(

     

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       +
       		"INSERT INTO results (submission_id, opponent, result, moves) VALUES (?, ?, ?, ?)",

     

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       +
       		submissionID, opponent, result, moves,

     

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       	)

     

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       	return err

     

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       +
       }

     

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       +
       

     

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       +
       func updateSubmissionStatus(id int, status string) error {

     

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       	_, err := globalDB.Exec("UPDATE submissions SET status = ? WHERE id = ?", status, id)

     

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       	return err

     

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       +
       }

     

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       +
       

     

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       func getPendingSubmissions() ([]Submission, error) {

     

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       	rows, err := globalDB.Query(

     

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       +
       		"SELECT id, username, filename, upload_time, status FROM submissions WHERE status = 'pending' ORDER BY upload_time",

     

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       	)

     

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       +
       	if err != nil {

     

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       		return nil, err

     

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       +
       	}

     

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       	defer rows.Close()

     

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       +
       

     

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       	var submissions []Submission

     

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       +
       	for rows.Next() {

     

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       +
       		var s Submission

     

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       +
       		err := rows.Scan(&s.ID, &s.Username, &s.Filename, &s.UploadTime, &s.Status)

     

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       +
       		if err != nil {

     

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       +
       			return nil, err

     

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       		}

     

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       		submissions = append(submissions, s)

     

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       +
       	}

     

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       +
       

     

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       	return submissions, rows.Err()

     

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       +
       }

+43

go.mod

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       module battleship-arena

     

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       go 1.25.4

     

       4
       4
       +
       

     

       5
       5
       +
       require (

     

       6
       6
       +
       	github.com/charmbracelet/bubbletea v1.3.10

     

       7
       7
       +
       	github.com/charmbracelet/lipgloss v1.1.0

     

       8
       8
       +
       	github.com/charmbracelet/ssh v0.0.0-20250826160808-ebfa259c7309

     

       9
       9
       +
       	github.com/charmbracelet/wish v1.4.7

     

       10
       10
       +
       	github.com/mattn/go-sqlite3 v1.14.32

     

       11
       11
       +
       )

     

       12
       12
       +
       

     

       13
       13
       +
       require (

     

       14
       14
       +
       	github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be // indirect

     

       15
       15
       +
       	github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect

     

       16
       16
       +
       	github.com/charmbracelet/colorprofile v0.2.3-0.20250311203215-f60798e515dc // indirect

     

       17
       17
       +
       	github.com/charmbracelet/keygen v0.5.3 // indirect

     

       18
       18
       +
       	github.com/charmbracelet/log v0.4.1 // indirect

     

       19
       19
       +
       	github.com/charmbracelet/x/ansi v0.10.1 // indirect

     

       20
       20
       +
       	github.com/charmbracelet/x/cellbuf v0.0.13-0.20250311204145-2c3ea96c31dd // indirect

     

       21
       21
       +
       	github.com/charmbracelet/x/conpty v0.1.0 // indirect

     

       22
       22
       +
       	github.com/charmbracelet/x/errors v0.0.0-20240508181413-e8d8b6e2de86 // indirect

     

       23
       23
       +
       	github.com/charmbracelet/x/input v0.3.4 // indirect

     

       24
       24
       +
       	github.com/charmbracelet/x/term v0.2.1 // indirect

     

       25
       25
       +
       	github.com/charmbracelet/x/termios v0.1.0 // indirect

     

       26
       26
       +
       	github.com/charmbracelet/x/windows v0.2.0 // indirect

     

       27
       27
       +
       	github.com/creack/pty v1.1.21 // indirect

     

       28
       28
       +
       	github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f // indirect

     

       29
       29
       +
       	github.com/go-logfmt/logfmt v0.6.0 // indirect

     

       30
       30
       +
       	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect

     

       31
       31
       +
       	github.com/mattn/go-isatty v0.0.20 // indirect

     

       32
       32
       +
       	github.com/mattn/go-localereader v0.0.1 // indirect

     

       33
       33
       +
       	github.com/mattn/go-runewidth v0.0.16 // indirect

     

       34
       34
       +
       	github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6 // indirect

     

       35
       35
       +
       	github.com/muesli/cancelreader v0.2.2 // indirect

     

       36
       36
       +
       	github.com/muesli/termenv v0.16.0 // indirect

     

       37
       37
       +
       	github.com/rivo/uniseg v0.4.7 // indirect

     

       38
       38
       +
       	github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e // indirect

     

       39
       39
       +
       	golang.org/x/crypto v0.37.0 // indirect

     

       40
       40
       +
       	golang.org/x/exp v0.0.0-20240719175910-8a7402abbf56 // indirect

     

       41
       41
       +
       	golang.org/x/sys v0.36.0 // indirect

     

       42
       42
       +
       	golang.org/x/text v0.24.0 // indirect

     

       43
       43
       +
       )

+85

go.sum

···

       1
       1
       +
       github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be h1:9AeTilPcZAjCFIImctFaOjnTIavg87rW78vTPkQqLI8=

     

       2
       2
       +
       github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be/go.mod h1:ySMOLuWl6zY27l47sB3qLNK6tF2fkHG55UZxx8oIVo4=

     

       3
       3
       +
       github.com/aymanbagabas/go-osc52/v2 v2.0.1 h1:HwpRHbFMcZLEVr42D4p7XBqjyuxQH5SMiErDT4WkJ2k=

     

       4
       4
       +
       github.com/aymanbagabas/go-osc52/v2 v2.0.1/go.mod h1:uYgXzlJ7ZpABp8OJ+exZzJJhRNQ2ASbcXHWsFqH8hp8=

     

       5
       5
       +
       github.com/charmbracelet/bubbletea v1.3.10 h1:otUDHWMMzQSB0Pkc87rm691KZ3SWa4KUlvF9nRvCICw=

     

       6
       6
       +
       github.com/charmbracelet/bubbletea v1.3.10/go.mod h1:ORQfo0fk8U+po9VaNvnV95UPWA1BitP1E0N6xJPlHr4=

     

       7
       7
       +
       github.com/charmbracelet/colorprofile v0.2.3-0.20250311203215-f60798e515dc h1:4pZI35227imm7yK2bGPcfpFEmuY1gc2YSTShr4iJBfs=

     

       8
       8
       +
       github.com/charmbracelet/colorprofile v0.2.3-0.20250311203215-f60798e515dc/go.mod h1:X4/0JoqgTIPSFcRA/P6INZzIuyqdFY5rm8tb41s9okk=

     

       9
       9
       +
       github.com/charmbracelet/keygen v0.5.3 h1:2MSDC62OUbDy6VmjIE2jM24LuXUvKywLCmaJDmr/Z/4=

     

       10
       10
       +
       github.com/charmbracelet/keygen v0.5.3/go.mod h1:TcpNoMAO5GSmhx3SgcEMqCrtn8BahKhB8AlwnLjRUpk=

     

       11
       11
       +
       github.com/charmbracelet/lipgloss v1.1.0 h1:vYXsiLHVkK7fp74RkV7b2kq9+zDLoEU4MZoFqR/noCY=

     

       12
       12
       +
       github.com/charmbracelet/lipgloss v1.1.0/go.mod h1:/6Q8FR2o+kj8rz4Dq0zQc3vYf7X+B0binUUBwA0aL30=

     

       13
       13
       +
       github.com/charmbracelet/log v0.4.1 h1:6AYnoHKADkghm/vt4neaNEXkxcXLSV2g1rdyFDOpTyk=

     

       14
       14
       +
       github.com/charmbracelet/log v0.4.1/go.mod h1:pXgyTsqsVu4N9hGdHmQ0xEA4RsXof402LX9ZgiITn2I=

     

       15
       15
       +
       github.com/charmbracelet/ssh v0.0.0-20250826160808-ebfa259c7309 h1:dCVbCRRtg9+tsfiTXTp0WupDlHruAXyp+YoxGVofHHc=

     

       16
       16
       +
       github.com/charmbracelet/ssh v0.0.0-20250826160808-ebfa259c7309/go.mod h1:R9cISUs5kAH4Cq/rguNbSwcR+slE5Dfm8FEs//uoIGE=

     

       17
       17
       +
       github.com/charmbracelet/wish v1.4.7 h1:O+jdLac3s6GaqkOHHSwezejNK04vl6VjO1A+hl8J8Yc=

     

       18
       18
       +
       github.com/charmbracelet/wish v1.4.7/go.mod h1:OBZ8vC62JC5cvbxJLh+bIWtG7Ctmct+ewziuUWK+G14=

     

       19
       19
       +
       github.com/charmbracelet/x/ansi v0.10.1 h1:rL3Koar5XvX0pHGfovN03f5cxLbCF2YvLeyz7D2jVDQ=

     

       20
       20
       +
       github.com/charmbracelet/x/ansi v0.10.1/go.mod h1:3RQDQ6lDnROptfpWuUVIUG64bD2g2BgntdxH0Ya5TeE=

     

       21
       21
       +
       github.com/charmbracelet/x/cellbuf v0.0.13-0.20250311204145-2c3ea96c31dd h1:vy0GVL4jeHEwG5YOXDmi86oYw2yuYUGqz6a8sLwg0X8=

     

       22
       22
       +
       github.com/charmbracelet/x/cellbuf v0.0.13-0.20250311204145-2c3ea96c31dd/go.mod h1:xe0nKWGd3eJgtqZRaN9RjMtK7xUYchjzPr7q6kcvCCs=

     

       23
       23
       +
       github.com/charmbracelet/x/conpty v0.1.0 h1:4zc8KaIcbiL4mghEON8D72agYtSeIgq8FSThSPQIb+U=

     

       24
       24
       +
       github.com/charmbracelet/x/conpty v0.1.0/go.mod h1:rMFsDJoDwVmiYM10aD4bH2XiRgwI7NYJtQgl5yskjEQ=

     

       25
       25
       +
       github.com/charmbracelet/x/errors v0.0.0-20240508181413-e8d8b6e2de86 h1:JSt3B+U9iqk37QUU2Rvb6DSBYRLtWqFqfxf8l5hOZUA=

     

       26
       26
       +
       github.com/charmbracelet/x/errors v0.0.0-20240508181413-e8d8b6e2de86/go.mod h1:2P0UgXMEa6TsToMSuFqKFQR+fZTO9CNGUNokkPatT/0=

     

       27
       27
       +
       github.com/charmbracelet/x/input v0.3.4 h1:Mujmnv/4DaitU0p+kIsrlfZl/UlmeLKw1wAP3e1fMN0=

     

       28
       28
       +
       github.com/charmbracelet/x/input v0.3.4/go.mod h1:JI8RcvdZWQIhn09VzeK3hdp4lTz7+yhiEdpEQtZN+2c=

     

       29
       29
       +
       github.com/charmbracelet/x/term v0.2.1 h1:AQeHeLZ1OqSXhrAWpYUtZyX1T3zVxfpZuEQMIQaGIAQ=

     

       30
       30
       +
       github.com/charmbracelet/x/term v0.2.1/go.mod h1:oQ4enTYFV7QN4m0i9mzHrViD7TQKvNEEkHUMCmsxdUg=

     

       31
       31
       +
       github.com/charmbracelet/x/termios v0.1.0 h1:y4rjAHeFksBAfGbkRDmVinMg7x7DELIGAFbdNvxg97k=

     

       32
       32
       +
       github.com/charmbracelet/x/termios v0.1.0/go.mod h1:H/EVv/KRnrYjz+fCYa9bsKdqF3S8ouDK0AZEbG7r+/U=

     

       33
       33
       +
       github.com/charmbracelet/x/windows v0.2.0 h1:ilXA1GJjTNkgOm94CLPeSz7rar54jtFatdmoiONPuEw=

     

       34
       34
       +
       github.com/charmbracelet/x/windows v0.2.0/go.mod h1:ZibNFR49ZFqCXgP76sYanisxRyC+EYrBE7TTknD8s1s=

     

       35
       35
       +
       github.com/creack/pty v1.1.21 h1:1/QdRyBaHHJP61QkWMXlOIBfsgdDeeKfK8SYVUWJKf0=

     

       36
       36
       +
       github.com/creack/pty v1.1.21/go.mod h1:MOBLtS5ELjhRRrroQr9kyvTxUAFNvYEK993ew/Vr4O4=

     

       37
       37
       +
       github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=

     

       38
       38
       +
       github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=

     

       39
       39
       +
       github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f h1:Y/CXytFA4m6baUTXGLOoWe4PQhGxaX0KpnayAqC48p4=

     

       40
       40
       +
       github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f/go.mod h1:vw97MGsxSvLiUE2X8qFplwetxpGLQrlU1Q9AUEIzCaM=

     

       41
       41
       +
       github.com/go-logfmt/logfmt v0.6.0 h1:wGYYu3uicYdqXVgoYbvnkrPVXkuLM1p1ifugDMEdRi4=

     

       42
       42
       +
       github.com/go-logfmt/logfmt v0.6.0/go.mod h1:WYhtIu8zTZfxdn5+rREduYbwxfcBr/Vr6KEVveWlfTs=

     

       43
       43
       +
       github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=

     

       44
       44
       +
       github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=

     

       45
       45
       +
       github.com/lucasb-eyer/go-colorful v1.2.0 h1:1nnpGOrhyZZuNyfu1QjKiUICQ74+3FNCN69Aj6K7nkY=

     

       46
       46
       +
       github.com/lucasb-eyer/go-colorful v1.2.0/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=

     

       47
       47
       +
       github.com/matryer/is v1.4.1 h1:55ehd8zaGABKLXQUe2awZ99BD/PTc2ls+KV/dXphgEQ=

     

       48
       48
       +
       github.com/matryer/is v1.4.1/go.mod h1:8I/i5uYgLzgsgEloJE1U6xx5HkBQpAZvepWuujKwMRU=

     

       49
       49
       +
       github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=

     

       50
       50
       +
       github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=

     

       51
       51
       +
       github.com/mattn/go-localereader v0.0.1 h1:ygSAOl7ZXTx4RdPYinUpg6W99U8jWvWi9Ye2JC/oIi4=

     

       52
       52
       +
       github.com/mattn/go-localereader v0.0.1/go.mod h1:8fBrzywKY7BI3czFoHkuzRoWE9C+EiG4R1k4Cjx5p88=

     

       53
       53
       +
       github.com/mattn/go-runewidth v0.0.16 h1:E5ScNMtiwvlvB5paMFdw9p4kSQzbXFikJ5SQO6TULQc=

     

       54
       54
       +
       github.com/mattn/go-runewidth v0.0.16/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=

     

       55
       55
       +
       github.com/mattn/go-sqlite3 v1.14.32 h1:JD12Ag3oLy1zQA+BNn74xRgaBbdhbNIDYvQUEuuErjs=

     

       56
       56
       +
       github.com/mattn/go-sqlite3 v1.14.32/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=

     

       57
       57
       +
       github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6 h1:ZK8zHtRHOkbHy6Mmr5D264iyp3TiX5OmNcI5cIARiQI=

     

       58
       58
       +
       github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6/go.mod h1:CJlz5H+gyd6CUWT45Oy4q24RdLyn7Md9Vj2/ldJBSIo=

     

       59
       59
       +
       github.com/muesli/cancelreader v0.2.2 h1:3I4Kt4BQjOR54NavqnDogx/MIoWBFa0StPA8ELUXHmA=

     

       60
       60
       +
       github.com/muesli/cancelreader v0.2.2/go.mod h1:3XuTXfFS2VjM+HTLZY9Ak0l6eUKfijIfMUZ4EgX0QYo=

     

       61
       61
       +
       github.com/muesli/termenv v0.16.0 h1:S5AlUN9dENB57rsbnkPyfdGuWIlkmzJjbFf0Tf5FWUc=

     

       62
       62
       +
       github.com/muesli/termenv v0.16.0/go.mod h1:ZRfOIKPFDYQoDFF4Olj7/QJbW60Ol/kL1pU3VfY/Cnk=

     

       63
       63
       +
       github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=

     

       64
       64
       +
       github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=

     

       65
       65
       +
       github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=

     

       66
       66
       +
       github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ=

     

       67
       67
       +
       github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=

     

       68
       68
       +
       github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=

     

       69
       69
       +
       github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=

     

       70
       70
       +
       github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e h1:JVG44RsyaB9T2KIHavMF/ppJZNG9ZpyihvCd0w101no=

     

       71
       71
       +
       github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e/go.mod h1:RbqR21r5mrJuqunuUZ/Dhy/avygyECGrLceyNeo4LiM=

     

       72
       72
       +
       golang.org/x/crypto v0.37.0 h1:kJNSjF/Xp7kU0iB2Z+9viTPMW4EqqsrywMXLJOOsXSE=

     

       73
       73
       +
       golang.org/x/crypto v0.37.0/go.mod h1:vg+k43peMZ0pUMhYmVAWysMK35e6ioLh3wB8ZCAfbVc=

     

       74
       74
       +
       golang.org/x/exp v0.0.0-20240719175910-8a7402abbf56 h1:2dVuKD2vS7b0QIHQbpyTISPd0LeHDbnYEryqj5Q1ug8=

     

       75
       75
       +
       golang.org/x/exp v0.0.0-20240719175910-8a7402abbf56/go.mod h1:M4RDyNAINzryxdtnbRXRL/OHtkFuWGRjvuhBJpk2IlY=

     

       76
       76
       +
       golang.org/x/sys v0.0.0-20210809222454-d867a43fc93e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=

     

       77
       77
       +
       golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=

     

       78
       78
       +
       golang.org/x/sys v0.36.0 h1:KVRy2GtZBrk1cBYA7MKu5bEZFxQk4NIDV6RLVcC8o0k=

     

       79
       79
       +
       golang.org/x/sys v0.36.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=

     

       80
       80
       +
       golang.org/x/term v0.31.0 h1:erwDkOK1Msy6offm1mOgvspSkslFnIGsFnxOKoufg3o=

     

       81
       81
       +
       golang.org/x/term v0.31.0/go.mod h1:R4BeIy7D95HzImkxGkTW1UQTtP54tio2RyHz7PwK0aw=

     

       82
       82
       +
       golang.org/x/text v0.24.0 h1:dd5Bzh4yt5KYA8f9CJHCP4FB4D51c2c6JvN37xJJkJ0=

     

       83
       83
       +
       golang.org/x/text v0.24.0/go.mod h1:L8rBsPeo2pSS+xqN0d5u2ikmjtmoJbDBT1b7nHvFCdU=

     

       84
       84
       +
       gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=

     

       85
       85
       +
       gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

+118

main.go

···

       1
       1
       +
       package main

     

       2
       2
       +
       

     

       3
       3
       +
       import (

     

       4
       4
       +
       	"context"

     

       5
       5
       +
       	"errors"

     

       6
       6
       +
       	"log"

     

       7
       7
       +
       	"net/http"

     

       8
       8
       +
       	"os"

     

       9
       9
       +
       	"os/signal"

     

       10
       10
       +
       	"syscall"

     

       11
       11
       +
       	"time"

     

       12
       12
       +
       

     

       13
       13
       +
       	tea "github.com/charmbracelet/bubbletea"

     

       14
       14
       +
       	"github.com/charmbracelet/lipgloss"

     

       15
       15
       +
       	"github.com/charmbracelet/ssh"

     

       16
       16
       +
       	"github.com/charmbracelet/wish"

     

       17
       17
       +
       	"github.com/charmbracelet/wish/bubbletea"

     

       18
       18
       +
       	"github.com/charmbracelet/wish/logging"

     

       19
       19
       +
       )

     

       20
       20
       +
       

     

       21
       21
       +
       const (

     

       22
       22
       +
       	host      = "0.0.0.0"

     

       23
       23
       +
       	sshPort   = "2222"

     

       24
       24
       +
       	webPort   = "8080"

     

       25
       25
       +
       	uploadDir = "./submissions"

     

       26
       26
       +
       	resultsDB = "./results.db"

     

       27
       27
       +
       )

     

       28
       28
       +
       

     

       29
       29
       +
       func main() {

     

       30
       30
       +
       	// Initialize storage

     

       31
       31
       +
       	if err := initStorage(); err != nil {

     

       32
       32
       +
       		log.Fatal(err)

     

       33
       33
       +
       	}

     

       34
       34
       +
       

     

       35
       35
       +
       	// Start background worker

     

       36
       36
       +
       	workerCtx, workerCancel := context.WithCancel(context.Background())

     

       37
       37
       +
       	defer workerCancel()

     

       38
       38
       +
       	go startWorker(workerCtx)

     

       39
       39
       +
       

     

       40
       40
       +
       	// Start web server

     

       41
       41
       +
       	go startWebServer()

     

       42
       42
       +
       

     

       43
       43
       +
       	// Start SSH server with TUI

     

       44
       44
       +
       	s, err := wish.NewServer(

     

       45
       45
       +
       		wish.WithAddress(host + ":" + sshPort),

     

       46
       46
       +
       		wish.WithHostKeyPath(".ssh/battleship_arena"),

     

       47
       47
       +
       		wish.WithMiddleware(

     

       48
       48
       +
       			scpMiddleware(),

     

       49
       49
       +
       			bubbletea.Middleware(teaHandler),

     

       50
       50
       +
       			logging.Middleware(),

     

       51
       51
       +
       		),

     

       52
       52
       +
       	)

     

       53
       53
       +
       	if err != nil {

     

       54
       54
       +
       		log.Fatal(err)

     

       55
       55
       +
       	}

     

       56
       56
       +
       

     

       57
       57
       +
       	done := make(chan os.Signal, 1)

     

       58
       58
       +
       	signal.Notify(done, os.Interrupt, syscall.SIGINT, syscall.SIGTERM)

     

       59
       59
       +
       

     

       60
       60
       +
       	log.Printf("SSH server listening on %s:%s", host, sshPort)

     

       61
       61
       +
       	log.Printf("Web leaderboard at http://%s:%s", host, webPort)

     

       62
       62
       +
       

     

       63
       63
       +
       	go func() {

     

       64
       64
       +
       		if err := s.ListenAndServe(); err != nil && !errors.Is(err, ssh.ErrServerClosed) {

     

       65
       65
       +
       			log.Fatal(err)

     

       66
       66
       +
       		}

     

       67
       67
       +
       	}()

     

       68
       68
       +
       

     

       69
       69
       +
       	<-done

     

       70
       70
       +
       	log.Println("Shutting down servers...")

     

       71
       71
       +
       	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)

     

       72
       72
       +
       	defer cancel()

     

       73
       73
       +
       	if err := s.Shutdown(ctx); err != nil && !errors.Is(err, ssh.ErrServerClosed) {

     

       74
       74
       +
       		log.Fatal(err)

     

       75
       75
       +
       	}

     

       76
       76
       +
       }

     

       77
       77
       +
       

     

       78
       78
       +
       func teaHandler(s ssh.Session) (tea.Model, []tea.ProgramOption) {

     

       79
       79
       +
       	pty, _, active := s.Pty()

     

       80
       80
       +
       	if !active {

     

       81
       81
       +
       		wish.Fatalln(s, "no active terminal")

     

       82
       82
       +
       		return nil, nil

     

       83
       83
       +
       	}

     

       84
       84
       +
       

     

       85
       85
       +
       	m := initialModel(s.User(), pty.Window.Width, pty.Window.Height)

     

       86
       86
       +
       	return m, []tea.ProgramOption{tea.WithAltScreen()}

     

       87
       87
       +
       }

     

       88
       88
       +
       

     

       89
       89
       +
       func initStorage() error {

     

       90
       90
       +
       	if err := os.MkdirAll(uploadDir, 0755); err != nil {

     

       91
       91
       +
       		return err

     

       92
       92
       +
       	}

     

       93
       93
       +
       	

     

       94
       94
       +
       	db, err := initDB(resultsDB)

     

       95
       95
       +
       	if err != nil {

     

       96
       96
       +
       		return err

     

       97
       97
       +
       	}

     

       98
       98
       +
       	globalDB = db

     

       99
       99
       +
       	

     

       100
       100
       +
       	return nil

     

       101
       101
       +
       }

     

       102
       102
       +
       

     

       103
       103
       +
       func startWebServer() {

     

       104
       104
       +
       	mux := http.NewServeMux()

     

       105
       105
       +
       	mux.HandleFunc("/", handleLeaderboard)

     

       106
       106
       +
       	mux.HandleFunc("/api/leaderboard", handleAPILeaderboard)

     

       107
       107
       +
       	

     

       108
       108
       +
       	log.Printf("Web server starting on :%s", webPort)

     

       109
       109
       +
       	if err := http.ListenAndServe(":"+webPort, mux); err != nil {

     

       110
       110
       +
       		log.Fatal(err)

     

       111
       111
       +
       	}

     

       112
       112
       +
       }

     

       113
       113
       +
       

     

       114
       114
       +
       var titleStyle = lipgloss.NewStyle().

     

       115
       115
       +
       	Bold(true).

     

       116
       116
       +
       	Foreground(lipgloss.Color("205")).

     

       117
       117
       +
       	MarginTop(1).

     

       118
       118
       +
       	MarginBottom(1)

+222

model.go

···

       1
       1
       +
       package main

     

       2
       2
       +
       

     

       3
       3
       +
       import (

     

       4
       4
       +
       	"fmt"

     

       5
       5
       +
       	"strings"

     

       6
       6
       +
       

     

       7
       7
       +
       	tea "github.com/charmbracelet/bubbletea"

     

       8
       8
       +
       	"github.com/charmbracelet/lipgloss"

     

       9
       9
       +
       )

     

       10
       10
       +
       

     

       11
       11
       +
       type menuChoice int

     

       12
       12
       +
       

     

       13
       13
       +
       const (

     

       14
       14
       +
       	menuUpload menuChoice = iota

     

       15
       15
       +
       	menuLeaderboard

     

       16
       16
       +
       	menuSubmit

     

       17
       17
       +
       	menuHelp

     

       18
       18
       +
       	menuQuit

     

       19
       19
       +
       )

     

       20
       20
       +
       

     

       21
       21
       +
       type model struct {

     

       22
       22
       +
       	username     string

     

       23
       23
       +
       	width        int

     

       24
       24
       +
       	height       int

     

       25
       25
       +
       	choice       menuChoice

     

       26
       26
       +
       	submitting   bool

     

       27
       27
       +
       	filename     string

     

       28
       28
       +
       	fileContent  []byte

     

       29
       29
       +
       	message      string

     

       30
       30
       +
       	leaderboard  []LeaderboardEntry

     

       31
       31
       +
       }

     

       32
       32
       +
       

     

       33
       33
       +
       func initialModel(username string, width, height int) model {

     

       34
       34
       +
       	return model{

     

       35
       35
       +
       		username: username,

     

       36
       36
       +
       		width:    width,

     

       37
       37
       +
       		height:   height,

     

       38
       38
       +
       		choice:   menuUpload,

     

       39
       39
       +
       	}

     

       40
       40
       +
       }

     

       41
       41
       +
       

     

       42
       42
       +
       func (m model) Init() tea.Cmd {

     

       43
       43
       +
       	return loadLeaderboard

     

       44
       44
       +
       }

     

       45
       45
       +
       

     

       46
       46
       +
       func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {

     

       47
       47
       +
       	switch msg := msg.(type) {

     

       48
       48
       +
       	case tea.KeyMsg:

     

       49
       49
       +
       		switch msg.String() {

     

       50
       50
       +
       		case "ctrl+c", "q":

     

       51
       51
       +
       			return m, tea.Quit

     

       52
       52
       +
       		case "up", "k":

     

       53
       53
       +
       			if m.choice > 0 {

     

       54
       54
       +
       				m.choice--

     

       55
       55
       +
       			}

     

       56
       56
       +
       		case "down", "j":

     

       57
       57
       +
       			if m.choice < menuQuit {

     

       58
       58
       +
       				m.choice++

     

       59
       59
       +
       			}

     

       60
       60
       +
       		case "enter":

     

       61
       61
       +
       			return m.handleSelection()

     

       62
       62
       +
       		}

     

       63
       63
       +
       	case tea.WindowSizeMsg:

     

       64
       64
       +
       		m.width = msg.Width

     

       65
       65
       +
       		m.height = msg.Height

     

       66
       66
       +
       	case leaderboardMsg:

     

       67
       67
       +
       		m.leaderboard = msg.entries

     

       68
       68
       +
       	}

     

       69
       69
       +
       	return m, nil

     

       70
       70
       +
       }

     

       71
       71
       +
       

     

       72
       72
       +
       func (m model) handleSelection() (tea.Model, tea.Cmd) {

     

       73
       73
       +
       	switch m.choice {

     

       74
       74
       +
       	case menuUpload:

     

       75
       75
       +
       		m.message = fmt.Sprintf("Upload via SCP:\nscp -P %s memory_functions_yourname.cpp %s@%s:~/", sshPort, m.username, host)

     

       76
       76
       +
       		return m, nil

     

       77
       77
       +
       	case menuLeaderboard:

     

       78
       78
       +
       		return m, loadLeaderboard

     

       79
       79
       +
       	case menuSubmit:

     

       80
       80
       +
       		m.message = "Submission queued for testing..."

     

       81
       81
       +
       		return m, submitForTesting(m.username)

     

       82
       82
       +
       	case menuHelp:

     

       83
       83
       +
       		helpText := `Battleship Arena - How to Compete

     

       84
       84
       +
       

     

       85
       85
       +
       1. Create your AI implementation (memory_functions_*.cpp)

     

       86
       86
       +
       2. Upload via SCP from your terminal:

     

       87
       87
       +
          scp -P ` + sshPort + ` memory_functions_yourname.cpp ` + m.username + `@` + host + `:~/

     

       88
       88
       +
       3. Select "Test Submission" to queue your AI for testing

     

       89
       89
       +
       4. Check the leaderboard to see your ranking!

     

       90
       90
       +
       

     

       91
       91
       +
       Your AI will be tested against the random AI baseline.

     

       92
       92
       +
       Win rate and average moves determine your ranking.`

     

       93
       93
       +
       		m.message = helpText

     

       94
       94
       +
       		return m, nil

     

       95
       95
       +
       	case menuQuit:

     

       96
       96
       +
       		return m, tea.Quit

     

       97
       97
       +
       	}

     

       98
       98
       +
       	return m, nil

     

       99
       99
       +
       }

     

       100
       100
       +
       

     

       101
       101
       +
       func (m model) View() string {

     

       102
       102
       +
       	var b strings.Builder

     

       103
       103
       +
       

     

       104
       104
       +
       	title := titleStyle.Render("🚢 Battleship Arena")

     

       105
       105
       +
       	b.WriteString(title + "\n\n")

     

       106
       106
       +
       	

     

       107
       107
       +
       	b.WriteString(fmt.Sprintf("User: %s\n\n", m.username))

     

       108
       108
       +
       

     

       109
       109
       +
       	// Menu

     

       110
       110
       +
       	menuStyle := lipgloss.NewStyle().PaddingLeft(2)

     

       111
       111
       +
       	selectedStyle := lipgloss.NewStyle().

     

       112
       112
       +
       		Foreground(lipgloss.Color("170")).

     

       113
       113
       +
       		Bold(true).

     

       114
       114
       +
       		PaddingLeft(1)

     

       115
       115
       +
       	

     

       116
       116
       +
       	for i := menuChoice(0); i <= menuQuit; i++ {

     

       117
       117
       +
       		cursor := " "

     

       118
       118
       +
       		style := menuStyle

     

       119
       119
       +
       		if i == m.choice {

     

       120
       120
       +
       			cursor = ">"

     

       121
       121
       +
       			style = selectedStyle

     

       122
       122
       +
       		}

     

       123
       123
       +
       		b.WriteString(style.Render(fmt.Sprintf("%s %s\n", cursor, menuText(i))))

     

       124
       124
       +
       	}

     

       125
       125
       +
       

     

       126
       126
       +
       	if m.message != "" {

     

       127
       127
       +
       		b.WriteString("\n" + lipgloss.NewStyle().

     

       128
       128
       +
       			Foreground(lipgloss.Color("86")).

     

       129
       129
       +
       			Render(m.message) + "\n")

     

       130
       130
       +
       	}

     

       131
       131
       +
       

     

       132
       132
       +
       	// Show leaderboard if loaded

     

       133
       133
       +
       	if len(m.leaderboard) > 0 {

     

       134
       134
       +
       		b.WriteString("\n" + renderLeaderboard(m.leaderboard))

     

       135
       135
       +
       	}

     

       136
       136
       +
       

     

       137
       137
       +
       	b.WriteString("\n\nPress q to quit, ↑/↓ to navigate, enter to select")

     

       138
       138
       +
       

     

       139
       139
       +
       	return b.String()

     

       140
       140
       +
       }

     

       141
       141
       +
       

     

       142
       142
       +
       func menuText(c menuChoice) string {

     

       143
       143
       +
       	switch c {

     

       144
       144
       +
       	case menuUpload:

     

       145
       145
       +
       		return "Upload Submission"

     

       146
       146
       +
       	case menuLeaderboard:

     

       147
       147
       +
       		return "View Leaderboard"

     

       148
       148
       +
       	case menuSubmit:

     

       149
       149
       +
       		return "Test Submission"

     

       150
       150
       +
       	case menuHelp:

     

       151
       151
       +
       		return "Help"

     

       152
       152
       +
       	case menuQuit:

     

       153
       153
       +
       		return "Quit"

     

       154
       154
       +
       	default:

     

       155
       155
       +
       		return "Unknown"

     

       156
       156
       +
       	}

     

       157
       157
       +
       }

     

       158
       158
       +
       

     

       159
       159
       +
       type leaderboardMsg struct {

     

       160
       160
       +
       	entries []LeaderboardEntry

     

       161
       161
       +
       }

     

       162
       162
       +
       

     

       163
       163
       +
       func loadLeaderboard() tea.Msg {

     

       164
       164
       +
       	entries, err := getLeaderboard(20)

     

       165
       165
       +
       	if err != nil {

     

       166
       166
       +
       		return leaderboardMsg{entries: nil}

     

       167
       167
       +
       	}

     

       168
       168
       +
       	return leaderboardMsg{entries: entries}

     

       169
       169
       +
       }

     

       170
       170
       +
       

     

       171
       171
       +
       type submitMsg struct {

     

       172
       172
       +
       	success bool

     

       173
       173
       +
       	message string

     

       174
       174
       +
       }

     

       175
       175
       +
       

     

       176
       176
       +
       func submitForTesting(username string) tea.Cmd {

     

       177
       177
       +
       	return func() tea.Msg {

     

       178
       178
       +
       		// Queue submission for testing

     

       179
       179
       +
       		if err := queueSubmission(username); err != nil {

     

       180
       180
       +
       			return submitMsg{success: false, message: err.Error()}

     

       181
       181
       +
       		}

     

       182
       182
       +
       		return submitMsg{success: true, message: "Submitted successfully!"}

     

       183
       183
       +
       	}

     

       184
       184
       +
       }

     

       185
       185
       +
       

     

       186
       186
       +
       func renderLeaderboard(entries []LeaderboardEntry) string {

     

       187
       187
       +
       	if len(entries) == 0 {

     

       188
       188
       +
       		return "No entries yet"

     

       189
       189
       +
       	}

     

       190
       190
       +
       

     

       191
       191
       +
       	var b strings.Builder

     

       192
       192
       +
       	b.WriteString(lipgloss.NewStyle().Bold(true).Render("🏆 Leaderboard") + "\n\n")

     

       193
       193
       +
       

     

       194
       194
       +
       	headerStyle := lipgloss.NewStyle().Bold(true).Foreground(lipgloss.Color("240"))

     

       195
       195
       +
       	b.WriteString(headerStyle.Render(fmt.Sprintf("%-4s %-20s %8s %8s %10s\n", 

     

       196
       196
       +
       		"Rank", "User", "Wins", "Losses", "Win Rate")))

     

       197
       197
       +
       

     

       198
       198
       +
       	for i, entry := range entries {

     

       199
       199
       +
       		winRate := 0.0

     

       200
       200
       +
       		total := entry.Wins + entry.Losses

     

       201
       201
       +
       		if total > 0 {

     

       202
       202
       +
       			winRate = float64(entry.Wins) / float64(total) * 100

     

       203
       203
       +
       		}

     

       204
       204
       +
       

     

       205
       205
       +
       		rank := fmt.Sprintf("#%d", i+1)

     

       206
       206
       +
       		line := fmt.Sprintf("%-4s %-20s %8d %8d %9.2f%%\n",

     

       207
       207
       +
       			rank, entry.Username, entry.Wins, entry.Losses, winRate)

     

       208
       208
       +
       

     

       209
       209
       +
       		style := lipgloss.NewStyle()

     

       210
       210
       +
       		if i == 0 {

     

       211
       211
       +
       			style = style.Foreground(lipgloss.Color("220")) // Gold

     

       212
       212
       +
       		} else if i == 1 {

     

       213
       213
       +
       			style = style.Foreground(lipgloss.Color("250")) // Silver

     

       214
       214
       +
       		} else if i == 2 {

     

       215
       215
       +
       			style = style.Foreground(lipgloss.Color("208")) // Bronze

     

       216
       216
       +
       		}

     

       217
       217
       +
       

     

       218
       218
       +
       		b.WriteString(style.Render(line))

     

       219
       219
       +
       	}

     

       220
       220
       +
       

     

       221
       221
       +
       	return b.String()

     

       222
       222
       +
       }

+125

runner.go

···

       1
       1
       +
       package main

     

       2
       2
       +
       

     

       3
       3
       +
       import (

     

       4
       4
       +
       	"fmt"

     

       5
       5
       +
       	"os"

     

       6
       6
       +
       	"os/exec"

     

       7
       7
       +
       	"path/filepath"

     

       8
       8
       +
       	"regexp"

     

       9
       9
       +
       	"strings"

     

       10
       10
       +
       )

     

       11
       11
       +
       

     

       12
       12
       +
       const battleshipRepoPath = "/Users/kierank/code/school/cs1210-battleship"

     

       13
       13
       +
       

     

       14
       14
       +
       func queueSubmission(username string) error {

     

       15
       15
       +
       	// Find the user's submission file

     

       16
       16
       +
       	files, err := filepath.Glob(filepath.Join(uploadDir, username, "memory_functions_*.cpp"))

     

       17
       17
       +
       	if err != nil {

     

       18
       18
       +
       		return err

     

       19
       19
       +
       	}

     

       20
       20
       +
       	if len(files) == 0 {

     

       21
       21
       +
       		return fmt.Errorf("no submission file found")

     

       22
       22
       +
       	}

     

       23
       23
       +
       

     

       24
       24
       +
       	filename := filepath.Base(files[0])

     

       25
       25
       +
       	_, err = addSubmission(username, filename)

     

       26
       26
       +
       	return err

     

       27
       27
       +
       }

     

       28
       28
       +
       

     

       29
       29
       +
       func processSubmissions() error {

     

       30
       30
       +
       	submissions, err := getPendingSubmissions()

     

       31
       31
       +
       	if err != nil {

     

       32
       32
       +
       		return err

     

       33
       33
       +
       	}

     

       34
       34
       +
       

     

       35
       35
       +
       	for _, sub := range submissions {

     

       36
       36
       +
       		if err := testSubmission(sub); err != nil {

     

       37
       37
       +
       			updateSubmissionStatus(sub.ID, "failed")

     

       38
       38
       +
       			continue

     

       39
       39
       +
       		}

     

       40
       40
       +
       		updateSubmissionStatus(sub.ID, "completed")

     

       41
       41
       +
       	}

     

       42
       42
       +
       

     

       43
       43
       +
       	return nil

     

       44
       44
       +
       }

     

       45
       45
       +
       

     

       46
       46
       +
       func testSubmission(sub Submission) error {

     

       47
       47
       +
       	updateSubmissionStatus(sub.ID, "testing")

     

       48
       48
       +
       

     

       49
       49
       +
       	// Copy submission to battleship repo

     

       50
       50
       +
       	srcPath := filepath.Join(uploadDir, sub.Username, sub.Filename)

     

       51
       51
       +
       	dstPath := filepath.Join(battleshipRepoPath, "src", sub.Filename)

     

       52
       52
       +
       

     

       53
       53
       +
       	input, err := os.ReadFile(srcPath)

     

       54
       54
       +
       	if err != nil {

     

       55
       55
       +
       		return err

     

       56
       56
       +
       	}

     

       57
       57
       +
       	if err := os.WriteFile(dstPath, input, 0644); err != nil {

     

       58
       58
       +
       		return err

     

       59
       59
       +
       	}

     

       60
       60
       +
       

     

       61
       61
       +
       	// Extract student ID from filename (memory_functions_NNNN.cpp)

     

       62
       62
       +
       	re := regexp.MustCompile(`memory_functions_(\w+)\.cpp`)

     

       63
       63
       +
       	matches := re.FindStringSubmatch(sub.Filename)

     

       64
       64
       +
       	if len(matches) < 2 {

     

       65
       65
       +
       		return fmt.Errorf("invalid filename format")

     

       66
       66
       +
       	}

     

       67
       67
       +
       	studentID := matches[1]

     

       68
       68
       +
       

     

       69
       69
       +
       	// Build the battleship program

     

       70
       70
       +
       	buildDir := filepath.Join(battleshipRepoPath, "build")

     

       71
       71
       +
       	os.MkdirAll(buildDir, 0755)

     

       72
       72
       +
       

     

       73
       73
       +
       	// Compile using the light version for testing

     

       74
       74
       +
       	cmd := exec.Command("g++", "-std=c++11", "-O3",

     

       75
       75
       +
       		"-o", filepath.Join(buildDir, "battle_"+studentID),

     

       76
       76
       +
       		filepath.Join(battleshipRepoPath, "src", "battle_light.cpp"),

     

       77
       77
       +
       		filepath.Join(battleshipRepoPath, "src", "battleship_light.cpp"),

     

       78
       78
       +
       		filepath.Join(battleshipRepoPath, "src", sub.Filename),

     

       79
       79
       +
       	)

     

       80
       80
       +
       	output, err := cmd.CombinedOutput()

     

       81
       81
       +
       	if err != nil {

     

       82
       82
       +
       		return fmt.Errorf("compilation failed: %s", output)

     

       83
       83
       +
       	}

     

       84
       84
       +
       

     

       85
       85
       +
       	// Run benchmark tests (100 games)

     

       86
       86
       +
       	cmd = exec.Command(filepath.Join(buildDir, "battle_"+studentID), "--benchmark", "100")

     

       87
       87
       +
       	output, err = cmd.CombinedOutput()

     

       88
       88
       +
       	if err != nil {

     

       89
       89
       +
       		return fmt.Errorf("benchmark failed: %s", output)

     

       90
       90
       +
       	}

     

       91
       91
       +
       

     

       92
       92
       +
       	// Parse results and store in database

     

       93
       93
       +
       	results := parseResults(string(output))

     

       94
       94
       +
       	for opponent, result := range results {

     

       95
       95
       +
       		addResult(sub.ID, opponent, result.Result, result.Moves)

     

       96
       96
       +
       	}

     

       97
       97
       +
       

     

       98
       98
       +
       	return nil

     

       99
       99
       +
       }

     

       100
       100
       +
       

     

       101
       101
       +
       type GameResult struct {

     

       102
       102
       +
       	Result string

     

       103
       103
       +
       	Moves  int

     

       104
       104
       +
       }

     

       105
       105
       +
       

     

       106
       106
       +
       func parseResults(output string) map[string]GameResult {

     

       107
       107
       +
       	results := make(map[string]GameResult)

     

       108
       108
       +
       	

     

       109
       109
       +
       	// Parse win/loss stats from benchmark output

     

       110
       110
       +
       	// Example: "Smart AI wins: 95 (95.0%)"

     

       111
       111
       +
       	lines := strings.Split(output, "\n")

     

       112
       112
       +
       	for _, line := range lines {

     

       113
       113
       +
       		if strings.Contains(line, "Smart AI wins:") {

     

       114
       114
       +
       			// Extract win count

     

       115
       115
       +
       			re := regexp.MustCompile(`Smart AI wins: (\d+)`)

     

       116
       116
       +
       			matches := re.FindStringSubmatch(line)

     

       117
       117
       +
       			if len(matches) >= 2 {

     

       118
       118
       +
       				// For now, just record as wins against "random"

     

       119
       119
       +
       				results["random"] = GameResult{Result: "win", Moves: 50}

     

       120
       120
       +
       			}

     

       121
       121
       +
       		}

     

       122
       122
       +
       	}

     

       123
       123
       +
       	

     

       124
       124
       +
       	return results

     

       125
       125
       +
       }

+105

scp.go

···

       1
       1
       +
       package main

     

       2
       2
       +
       

     

       3
       3
       +
       import (

     

       4
       4
       +
       	"fmt"

     

       5
       5
       +
       	"io"

     

       6
       6
       +
       	"log"

     

       7
       7
       +
       	"os"

     

       8
       8
       +
       	"path/filepath"

     

       9
       9
       +
       

     

       10
       10
       +
       	"github.com/charmbracelet/ssh"

     

       11
       11
       +
       	"github.com/charmbracelet/wish"

     

       12
       12
       +
       )

     

       13
       13
       +
       

     

       14
       14
       +
       // Add SCP support as a custom middleware

     

       15
       15
       +
       func scpMiddleware() wish.Middleware {

     

       16
       16
       +
       	return func(sh ssh.Handler) ssh.Handler {

     

       17
       17
       +
       		return func(s ssh.Session) {

     

       18
       18
       +
       			cmd := s.Command()

     

       19
       19
       +
       			if len(cmd) > 0 && cmd[0] == "scp" {

     

       20
       20
       +
       				handleSCP(s, cmd)

     

       21
       21
       +
       				return

     

       22
       22
       +
       			}

     

       23
       23
       +
       			sh(s)

     

       24
       24
       +
       		}

     

       25
       25
       +
       	}

     

       26
       26
       +
       }

     

       27
       27
       +
       

     

       28
       28
       +
       func handleSCP(s ssh.Session, cmd []string) {

     

       29
       29
       +
       	// Parse SCP command

     

       30
       30
       +
       	target := false

     

       31
       31
       +
       	filename := ""

     

       32
       32
       +
       	

     

       33
       33
       +
       	for i, arg := range cmd {

     

       34
       34
       +
       		if arg == "-t" {

     

       35
       35
       +
       			target = true

     

       36
       36
       +
       		} else if i == len(cmd)-1 {

     

       37
       37
       +
       			filename = filepath.Base(arg)

     

       38
       38
       +
       		}

     

       39
       39
       +
       	}

     

       40
       40
       +
       

     

       41
       41
       +
       	if !target {

     

       42
       42
       +
       		log.Printf("SCP source mode not supported from %s", s.User())

     

       43
       43
       +
       		fmt.Fprintf(s, "SCP source mode not supported\n")

     

       44
       44
       +
       		s.Exit(1)

     

       45
       45
       +
       		return

     

       46
       46
       +
       	}

     

       47
       47
       +
       

     

       48
       48
       +
       	// Validate filename

     

       49
       49
       +
       	matched, _ := filepath.Match("memory_functions_*.cpp", filename)

     

       50
       50
       +
       	if !matched {

     

       51
       51
       +
       		log.Printf("Invalid filename from %s: %s", s.User(), filename)

     

       52
       52
       +
       		fmt.Fprintf(s, "Only memory_functions_*.cpp files are accepted\n")

     

       53
       53
       +
       		s.Exit(1)

     

       54
       54
       +
       		return

     

       55
       55
       +
       	}

     

       56
       56
       +
       

     

       57
       57
       +
       	// Create user directory

     

       58
       58
       +
       	userDir := filepath.Join(uploadDir, s.User())

     

       59
       59
       +
       	if err := os.MkdirAll(userDir, 0755); err != nil {

     

       60
       60
       +
       		log.Printf("Failed to create user directory: %v", err)

     

       61
       61
       +
       		s.Exit(1)

     

       62
       62
       +
       		return

     

       63
       63
       +
       	}

     

       64
       64
       +
       

     

       65
       65
       +
       	// SCP protocol: send 0 byte to indicate ready

     

       66
       66
       +
       	fmt.Fprintf(s, "\x00")

     

       67
       67
       +
       

     

       68
       68
       +
       	// Read SCP header (C0644 size filename)

     

       69
       69
       +
       	buf := make([]byte, 1024)

     

       70
       70
       +
       	n, err := s.Read(buf)

     

       71
       71
       +
       	if err != nil {

     

       72
       72
       +
       		log.Printf("Failed to read SCP header: %v", err)

     

       73
       73
       +
       		s.Exit(1)

     

       74
       74
       +
       		return

     

       75
       75
       +
       	}

     

       76
       76
       +
       

     

       77
       77
       +
       	// Acknowledge header

     

       78
       78
       +
       	fmt.Fprintf(s, "\x00")

     

       79
       79
       +
       

     

       80
       80
       +
       	// Save file

     

       81
       81
       +
       	dstPath := filepath.Join(userDir, filename)

     

       82
       82
       +
       	file, err := os.Create(dstPath)

     

       83
       83
       +
       	if err != nil {

     

       84
       84
       +
       		log.Printf("Failed to create file: %v", err)

     

       85
       85
       +
       		s.Exit(1)

     

       86
       86
       +
       		return

     

       87
       87
       +
       	}

     

       88
       88
       +
       	defer file.Close()

     

       89
       89
       +
       

     

       90
       90
       +
       	// Read file content

     

       91
       91
       +
       	_, err = io.Copy(file, io.LimitReader(s, int64(n)))

     

       92
       92
       +
       	if err != nil && err != io.EOF {

     

       93
       93
       +
       		log.Printf("Failed to write file: %v", err)

     

       94
       94
       +
       		s.Exit(1)

     

       95
       95
       +
       		return

     

       96
       96
       +
       	}

     

       97
       97
       +
       

     

       98
       98
       +
       	// Final acknowledgment

     

       99
       99
       +
       	fmt.Fprintf(s, "\x00")

     

       100
       100
       +
       

     

       101
       101
       +
       	log.Printf("Uploaded %s from %s", filename, s.User())

     

       102
       102
       +
       	addSubmission(s.User(), filename)

     

       103
       103
       +
       	

     

       104
       104
       +
       	s.Exit(0)

     

       105
       105
       +
       }

+30

scripts/test-submission.sh

···

       1
       1
       +
       #!/bin/bash

     

       2
       2
       +
       # Example test script for submitting and testing an AI

     

       3
       3
       +
       

     

       4
       4
       +
       set -e

     

       5
       5
       +
       

     

       6
       6
       +
       USER="testuser"

     

       7
       7
       +
       HOST="localhost"

     

       8
       8
       +
       PORT="2222"

     

       9
       9
       +
       FILE="memory_functions_test.cpp"

     

       10
       10
       +
       

     

       11
       11
       +
       echo "🚢 Battleship Arena Test Script"

     

       12
       12
       +
       echo "================================"

     

       13
       13
       +
       

     

       14
       14
       +
       # Check if submission file exists

     

       15
       15
       +
       if [ ! -f "$1" ]; then

     

       16
       16
       +
           echo "Usage: $0 <memory_functions_*.cpp>"

     

       17
       17
       +
           exit 1

     

       18
       18
       +
       fi

     

       19
       19
       +
       

     

       20
       20
       +
       FILE=$(basename "$1")

     

       21
       21
       +
       

     

       22
       22
       +
       echo "📤 Uploading $FILE..."

     

       23
       23
       +
       scp -P $PORT "$1" ${USER}@${HOST}:~/

     

       24
       24
       +
       

     

       25
       25
       +
       echo "✅ Upload complete!"

     

       26
       26
       +
       echo ""

     

       27
       27
       +
       echo "Next steps:"

     

       28
       28
       +
       echo "1. SSH into the server: ssh -p $PORT ${USER}@${HOST}"

     

       29
       29
       +
       echo "2. Navigate to 'Test Submission' in the menu"

     

       30
       30
       +
       echo "3. View results on the leaderboard: http://localhost:8080"

+254

web.go

···

       1
       1
       +
       package main

     

       2
       2
       +
       

     

       3
       3
       +
       import (

     

       4
       4
       +
       	"encoding/json"

     

       5
       5
       +
       	"fmt"

     

       6
       6
       +
       	"html/template"

     

       7
       7
       +
       	"net/http"

     

       8
       8
       +
       )

     

       9
       9
       +
       

     

       10
       10
       +
       const leaderboardHTML = `

     

       11
       11
       +
       <!DOCTYPE html>

     

       12
       12
       +
       <html>

     

       13
       13
       +
       <head>

     

       14
       14
       +
           <title>Battleship Arena - Leaderboard</title>

     

       15
       15
       +
           <meta charset="UTF-8">

     

       16
       16
       +
           <meta name="viewport" content="width=device-width, initial-scale=1.0">

     

       17
       17
       +
           <style>

     

       18
       18
       +
               body {

     

       19
       19
       +
                   font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;

     

       20
       20
       +
                   max-width: 1200px;

     

       21
       21
       +
                   margin: 0 auto;

     

       22
       22
       +
                   padding: 20px;

     

       23
       23
       +
                   background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);

     

       24
       24
       +
                   min-height: 100vh;

     

       25
       25
       +
               }

     

       26
       26
       +
               .container {

     

       27
       27
       +
                   background: white;

     

       28
       28
       +
                   border-radius: 12px;

     

       29
       29
       +
                   box-shadow: 0 20px 60px rgba(0,0,0,0.3);

     

       30
       30
       +
                   padding: 40px;

     

       31
       31
       +
               }

     

       32
       32
       +
               h1 {

     

       33
       33
       +
                   color: #333;

     

       34
       34
       +
                   text-align: center;

     

       35
       35
       +
                   margin-bottom: 10px;

     

       36
       36
       +
                   font-size: 2.5em;

     

       37
       37
       +
               }

     

       38
       38
       +
               .subtitle {

     

       39
       39
       +
                   text-align: center;

     

       40
       40
       +
                   color: #666;

     

       41
       41
       +
                   margin-bottom: 40px;

     

       42
       42
       +
                   font-size: 1.1em;

     

       43
       43
       +
               }

     

       44
       44
       +
               table {

     

       45
       45
       +
                   width: 100%;

     

       46
       46
       +
                   border-collapse: collapse;

     

       47
       47
       +
                   margin-top: 20px;

     

       48
       48
       +
               }

     

       49
       49
       +
               th {

     

       50
       50
       +
                   background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);

     

       51
       51
       +
                   color: white;

     

       52
       52
       +
                   padding: 15px;

     

       53
       53
       +
                   text-align: left;

     

       54
       54
       +
                   font-weight: 600;

     

       55
       55
       +
               }

     

       56
       56
       +
               td {

     

       57
       57
       +
                   padding: 12px 15px;

     

       58
       58
       +
                   border-bottom: 1px solid #eee;

     

       59
       59
       +
               }

     

       60
       60
       +
               tr:hover {

     

       61
       61
       +
                   background: #f8f9fa;

     

       62
       62
       +
               }

     

       63
       63
       +
               .rank {

     

       64
       64
       +
                   font-weight: bold;

     

       65
       65
       +
                   font-size: 1.1em;

     

       66
       66
       +
               }

     

       67
       67
       +
               .rank-1 { color: #FFD700; }

     

       68
       68
       +
               .rank-2 { color: #C0C0C0; }

     

       69
       69
       +
               .rank-3 { color: #CD7F32; }

     

       70
       70
       +
               .win-rate {

     

       71
       71
       +
                   font-weight: 600;

     

       72
       72
       +
               }

     

       73
       73
       +
               .win-rate-high { color: #10b981; }

     

       74
       74
       +
               .win-rate-med { color: #f59e0b; }

     

       75
       75
       +
               .win-rate-low { color: #ef4444; }

     

       76
       76
       +
               .stats {

     

       77
       77
       +
                   display: flex;

     

       78
       78
       +
                   justify-content: space-around;

     

       79
       79
       +
                   margin-top: 40px;

     

       80
       80
       +
                   padding-top: 30px;

     

       81
       81
       +
                   border-top: 2px solid #eee;

     

       82
       82
       +
               }

     

       83
       83
       +
               .stat {

     

       84
       84
       +
                   text-align: center;

     

       85
       85
       +
               }

     

       86
       86
       +
               .stat-value {

     

       87
       87
       +
                   font-size: 2em;

     

       88
       88
       +
                   font-weight: bold;

     

       89
       89
       +
                   color: #667eea;

     

       90
       90
       +
               }

     

       91
       91
       +
               .stat-label {

     

       92
       92
       +
                   color: #666;

     

       93
       93
       +
                   margin-top: 5px;

     

       94
       94
       +
               }

     

       95
       95
       +
               .instructions {

     

       96
       96
       +
                   background: #f8f9fa;

     

       97
       97
       +
                   padding: 20px;

     

       98
       98
       +
                   border-radius: 8px;

     

       99
       99
       +
                   margin-top: 30px;

     

       100
       100
       +
               }

     

       101
       101
       +
               .instructions h3 {

     

       102
       102
       +
                   margin-top: 0;

     

       103
       103
       +
                   color: #333;

     

       104
       104
       +
               }

     

       105
       105
       +
               .instructions code {

     

       106
       106
       +
                   background: #e9ecef;

     

       107
       107
       +
                   padding: 3px 8px;

     

       108
       108
       +
                   border-radius: 4px;

     

       109
       109
       +
                   font-family: 'Monaco', 'Courier New', monospace;

     

       110
       110
       +
               }

     

       111
       111
       +
               .refresh-note {

     

       112
       112
       +
                   text-align: center;

     

       113
       113
       +
                   color: #999;

     

       114
       114
       +
                   font-size: 0.9em;

     

       115
       115
       +
                   margin-top: 20px;

     

       116
       116
       +
               }

     

       117
       117
       +
           </style>

     

       118
       118
       +
           <script>

     

       119
       119
       +
               // Auto-refresh every 30 seconds

     

       120
       120
       +
               setTimeout(() => location.reload(), 30000);

     

       121
       121
       +
           </script>

     

       122
       122
       +
       </head>

     

       123
       123
       +
       <body>

     

       124
       124
       +
           <div class="container">

     

       125
       125
       +
               <h1>🚢 Battleship Arena</h1>

     

       126
       126
       +
               <p class="subtitle">Smart AI Competition Leaderboard</p>

     

       127
       127
       +
               

     

       128
       128
       +
               <table>

     

       129
       129
       +
                   <thead>

     

       130
       130
       +
                       <tr>

     

       131
       131
       +
                           <th>Rank</th>

     

       132
       132
       +
                           <th>Player</th>

     

       133
       133
       +
                           <th>Wins</th>

     

       134
       134
       +
                           <th>Losses</th>

     

       135
       135
       +
                           <th>Win Rate</th>

     

       136
       136
       +
                           <th>Avg Moves</th>

     

       137
       137
       +
                           <th>Last Played</th>

     

       138
       138
       +
                       </tr>

     

       139
       139
       +
                   </thead>

     

       140
       140
       +
                   <tbody>

     

       141
       141
       +
                       {{range $i, $e := .Entries}}

     

       142
       142
       +
                       <tr>

     

       143
       143
       +
                           <td class="rank rank-{{add $i 1}}">{{if lt $i 3}}{{medal $i}}{{else}}#{{add $i 1}}{{end}}</td>

     

       144
       144
       +
                           <td><strong>{{$e.Username}}</strong></td>

     

       145
       145
       +
                           <td>{{$e.Wins}}</td>

     

       146
       146
       +
                           <td>{{$e.Losses}}</td>

     

       147
       147
       +
                           <td class="win-rate {{winRateClass $e}}">{{winRate $e}}%</td>

     

       148
       148
       +
                           <td>{{printf "%.1f" $e.AvgMoves}}</td>

     

       149
       149
       +
                           <td>{{$e.LastPlayed.Format "Jan 2, 3:04 PM"}}</td>

     

       150
       150
       +
                       </tr>

     

       151
       151
       +
                       {{end}}

     

       152
       152
       +
                   </tbody>

     

       153
       153
       +
               </table>

     

       154
       154
       +
       

     

       155
       155
       +
               <div class="stats">

     

       156
       156
       +
                   <div class="stat">

     

       157
       157
       +
                       <div class="stat-value">{{.TotalPlayers}}</div>

     

       158
       158
       +
                       <div class="stat-label">Players</div>

     

       159
       159
       +
                   </div>

     

       160
       160
       +
                   <div class="stat">

     

       161
       161
       +
                       <div class="stat-value">{{.TotalGames}}</div>

     

       162
       162
       +
                       <div class="stat-label">Games Played</div>

     

       163
       163
       +
                   </div>

     

       164
       164
       +
               </div>

     

       165
       165
       +
       

     

       166
       166
       +
               <div class="instructions">

     

       167
       167
       +
                   <h3>📤 How to Submit</h3>

     

       168
       168
       +
                   <p>Upload your battleship AI implementation via SSH:</p>

     

       169
       169
       +
                   <code>ssh -p 2222 username@localhost</code>

     

       170
       170
       +
                   <p style="margin-top: 10px;">Then navigate to upload your <code>memory_functions_*.cpp</code> file.</p>

     

       171
       171
       +
               </div>

     

       172
       172
       +
       

     

       173
       173
       +
               <p class="refresh-note">Page auto-refreshes every 30 seconds</p>

     

       174
       174
       +
           </div>

     

       175
       175
       +
       </body>

     

       176
       176
       +
       </html>

     

       177
       177
       +
       `

     

       178
       178
       +
       

     

       179
       179
       +
       var tmpl = template.Must(template.New("leaderboard").Funcs(template.FuncMap{

     

       180
       180
       +
       	"add": func(a, b int) int {

     

       181
       181
       +
       		return a + b

     

       182
       182
       +
       	},

     

       183
       183
       +
       	"medal": func(i int) string {

     

       184
       184
       +
       		medals := []string{"🥇", "🥈", "🥉"}

     

       185
       185
       +
       		if i < len(medals) {

     

       186
       186
       +
       			return medals[i]

     

       187
       187
       +
       		}

     

       188
       188
       +
       		return ""

     

       189
       189
       +
       	},

     

       190
       190
       +
       	"winRate": func(e LeaderboardEntry) string {

     

       191
       191
       +
       		total := e.Wins + e.Losses

     

       192
       192
       +
       		if total == 0 {

     

       193
       193
       +
       			return "0.0"

     

       194
       194
       +
       		}

     

       195
       195
       +
       		rate := float64(e.Wins) / float64(total) * 100

     

       196
       196
       +
       		return formatFloat(rate, 1)

     

       197
       197
       +
       	},

     

       198
       198
       +
       	"winRateClass": func(e LeaderboardEntry) string {

     

       199
       199
       +
       		total := e.Wins + e.Losses

     

       200
       200
       +
       		if total == 0 {

     

       201
       201
       +
       			return "win-rate-low"

     

       202
       202
       +
       		}

     

       203
       203
       +
       		rate := float64(e.Wins) / float64(total) * 100

     

       204
       204
       +
       		if rate >= 80 {

     

       205
       205
       +
       			return "win-rate-high"

     

       206
       206
       +
       		} else if rate >= 50 {

     

       207
       207
       +
       			return "win-rate-med"

     

       208
       208
       +
       		}

     

       209
       209
       +
       		return "win-rate-low"

     

       210
       210
       +
       	},

     

       211
       211
       +
       }).Parse(leaderboardHTML))

     

       212
       212
       +
       

     

       213
       213
       +
       func formatFloat(f float64, decimals int) string {

     

       214
       214
       +
       	return fmt.Sprintf("%.1f", f)

     

       215
       215
       +
       }

     

       216
       216
       +
       

     

       217
       217
       +
       func handleLeaderboard(w http.ResponseWriter, r *http.Request) {

     

       218
       218
       +
       	entries, err := getLeaderboard(50)

     

       219
       219
       +
       	if err != nil {

     

       220
       220
       +
       		http.Error(w, "Failed to load leaderboard", http.StatusInternalServerError)

     

       221
       221
       +
       		return

     

       222
       222
       +
       	}

     

       223
       223
       +
       

     

       224
       224
       +
       	data := struct {

     

       225
       225
       +
       		Entries      []LeaderboardEntry

     

       226
       226
       +
       		TotalPlayers int

     

       227
       227
       +
       		TotalGames   int

     

       228
       228
       +
       	}{

     

       229
       229
       +
       		Entries:      entries,

     

       230
       230
       +
       		TotalPlayers: len(entries),

     

       231
       231
       +
       		TotalGames:   calculateTotalGames(entries),

     

       232
       232
       +
       	}

     

       233
       233
       +
       

     

       234
       234
       +
       	tmpl.Execute(w, data)

     

       235
       235
       +
       }

     

       236
       236
       +
       

     

       237
       237
       +
       func handleAPILeaderboard(w http.ResponseWriter, r *http.Request) {

     

       238
       238
       +
       	entries, err := getLeaderboard(50)

     

       239
       239
       +
       	if err != nil {

     

       240
       240
       +
       		http.Error(w, "Failed to load leaderboard", http.StatusInternalServerError)

     

       241
       241
       +
       		return

     

       242
       242
       +
       	}

     

       243
       243
       +
       

     

       244
       244
       +
       	w.Header().Set("Content-Type", "application/json")

     

       245
       245
       +
       	json.NewEncoder(w).Encode(entries)

     

       246
       246
       +
       }

     

       247
       247
       +
       

     

       248
       248
       +
       func calculateTotalGames(entries []LeaderboardEntry) int {

     

       249
       249
       +
       	total := 0

     

       250
       250
       +
       	for _, e := range entries {

     

       251
       251
       +
       		total += e.Wins + e.Losses

     

       252
       252
       +
       	}

     

       253
       253
       +
       	return total / 2 // Each game counted twice (win+loss)

     

       254
       254
       +
       }

+24

worker.go

···

       1
       1
       +
       package main

     

       2
       2
       +
       

     

       3
       3
       +
       import (

     

       4
       4
       +
       	"context"

     

       5
       5
       +
       	"log"

     

       6
       6
       +
       	"time"

     

       7
       7
       +
       )

     

       8
       8
       +
       

     

       9
       9
       +
       // Background worker that processes pending submissions

     

       10
       10
       +
       func startWorker(ctx context.Context) {

     

       11
       11
       +
       	ticker := time.NewTicker(30 * time.Second)

     

       12
       12
       +
       	defer ticker.Stop()

     

       13
       13
       +
       

     

       14
       14
       +
       	for {

     

       15
       15
       +
       		select {

     

       16
       16
       +
       		case <-ctx.Done():

     

       17
       17
       +
       			return

     

       18
       18
       +
       		case <-ticker.C:

     

       19
       19
       +
       			if err := processSubmissions(); err != nil {

     

       20
       20
       +
       				log.Printf("Worker error: %v", err)

     

       21
       21
       +
       			}

     

       22
       22
       +
       		}

     

       23
       23
       +
       	}

     

       24
       24
       +
       }