From e0df45921b627814a9d8e212e621451f579e7d25 Mon Sep 17 00:00:00 2001
From: oppiliappan <me@oppi.li>
Date: Thu, 17 Jul 2025 14:54:04 +0100
Subject: [PATCH] appview: add repo_languages table
Change-Id: smkqswpzzylwzmmrlrtvoyvulsmnvpst

and db helpers to set and get.

Signed-off-by: oppiliappan <me@oppi.li>
---
 appview/db/db.go       | 15 ++++++++
 appview/db/language.go | 81 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 96 insertions(+)
 create mode 100644 appview/db/language.go

diff --git a/appview/db/db.go b/appview/db/db.go
index df9382f..3013c01 100644
--- a/appview/db/db.go
+++ b/appview/db/db.go
@@ -421,6 +421,21 @@ func Make(dbPath string) (*DB, error) {
 				on delete cascade
 		);
 
+		create table if not exists repo_languages (
+			-- identifiers
+			id integer primary key autoincrement,
+
+			-- repo identifiers
+			repo_at text not null,
+			ref text not null,
+
+			-- language breakdown
+			language text not null,
+			bytes integer not null check (bytes >= 0),
+
+			unique(repo_at, ref, language)
+		);
+
 		create table if not exists migrations (
 			id integer primary key autoincrement,
 			name text unique
diff --git a/appview/db/language.go b/appview/db/language.go
new file mode 100644
index 0000000..599806e
--- /dev/null
+++ b/appview/db/language.go
@@ -0,0 +1,81 @@
+package db
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/bluesky-social/indigo/atproto/syntax"
+)
+
+type RepoLanguage struct {
+	Id       int64
+	RepoAt   syntax.ATURI
+	Ref      string
+	Language string
+	Bytes    int64
+}
+
+func GetRepoLanguages(e Execer, filters ...filter) ([]RepoLanguage, error) {
+	var conditions []string
+	var args []any
+	for _, filter := range filters {
+		conditions = append(conditions, filter.Condition())
+		args = append(args, filter.Arg()...)
+	}
+
+	whereClause := ""
+	if conditions != nil {
+		whereClause = " where " + strings.Join(conditions, " and ")
+	}
+
+	query := fmt.Sprintf(
+		`select id, repo_at, ref, language, bytes from repo_languages %s`,
+		whereClause,
+	)
+	rows, err := e.Query(query, args...)
+
+	if err != nil {
+		return nil, fmt.Errorf("failed to execute query: %w ", err)
+	}
+
+	var langs []RepoLanguage
+	for rows.Next() {
+		var rl RepoLanguage
+
+		err := rows.Scan(
+			&rl.Id,
+			&rl.RepoAt,
+			&rl.Ref,
+			&rl.Language,
+			&rl.Bytes,
+		)
+		if err != nil {
+			return nil, fmt.Errorf("failed to scan: %w ", err)
+		}
+
+		langs = append(langs, rl)
+	}
+	if err = rows.Err(); err != nil {
+		return nil, fmt.Errorf("failed to scan rows: %w ", err)
+	}
+
+	return langs, nil
+}
+
+func InsertRepoLanguages(e Execer, langs []RepoLanguage) error {
+	stmt, err := e.Prepare(
+		"insert or replace into repo_languages (repo_at, ref, language, bytes) values (?, ?, ?, ?)",
+	)
+	if err != nil {
+		return err
+	}
+
+	for _, l := range langs {
+		_, err := stmt.Exec(l.RepoAt, l.Ref, l.Language, l.Bytes)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
-- 
2.43.0