name: Daily fetch bangs.json from Kagi
on:
  schedule:
    - cron: "0 0 * * *"
  workflow_dispatch:

jobs:
  fetch-bangs:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3
        with:
          fetch-depth: 1

      - name: Install bun
        uses: oven-sh/setup-bun@v1

      - name: Download bangs.json
        run: |
          curl -o bangs.json https://raw.githubusercontent.com/kagisearch/bangs/refs/heads/main/data/bangs.json

      - name: Verify file
        run: |
          if [ ! -s bangs.json ]; then
            echo "Downloaded file is empty"
            exit 1
          fi
          if ! jq empty bangs.json; then
            echo "Downloaded file is not valid JSON"
            exit 1
          fi

      - name: Replace bangs.json
        run: |
          mkdir -p src/bangs
          mv bangs.json src/bangs/bangs.json

      - name: 🥔 hash
        run: bun run hash

      - name: Configure Git
        run: |
          git config --local user.email "github-actions[bot]@users.noreply.github.com"
          git config --local user.name "github-actions[bot]"
          
      - name: Check for changes and commit
        id: check_changes
        run: |
          git add src/bangs/bangs.json src/bangs/hashbang.ts
          
          # Check if there are changes to commit
          if git diff --staged --quiet; then
            echo "No changes to commit"
            echo "has_changes=false" >> $GITHUB_OUTPUT
            exit 0
          fi
          
          echo "Changes detected in bangs files"
          echo "has_changes=true" >> $GITHUB_OUTPUT
          
          # Look for bangs update commits in history
          git fetch origin main --unshallow
          
          # Check if previous commit was a bangs update
          PREV_COMMIT_MSG=$(git log -1 --pretty=%B)
          if [[ "$PREV_COMMIT_MSG" == "chore: update bangs.json" ]]; then
            # Amend the previous commit
            git commit --amend -m "chore: update bangs.json"
          else
            # Create a new commit
            git commit -m "chore: update bangs.json"
          fi
          
          # Push to main - using force only if we amended
          if [[ "$PREV_COMMIT_MSG" == "chore: update bangs.json" ]]; then
            git push --force-with-lease origin main
          else
            git push origin main
          fi

      # Handle Tangled push only if we have new changes
      - name: Setup Tailscale
        if: steps.check_changes.outputs.has_changes == 'true'
        uses: tailscale/github-action@v3
        with:
          oauth-client-id: ${{ secrets.TS_OAUTH_CLIENT_ID }}
          oauth-secret: ${{ secrets.TS_OAUTH_SECRET }}
          tags: tag:ci

      - name: Configure SSH
        if: steps.check_changes.outputs.has_changes == 'true'
        run: |
          mkdir -p ~/.ssh
          echo "StrictHostKeyChecking no" >> ~/.ssh/config

      - name: Push to Tangled
        if: steps.check_changes.outputs.has_changes == 'true'
        run: |
          git remote add tangled git@ember:did:plc:krxbvxvis5skq7jj6eot23ul/unduckified || true
          git push tangled main
        continue-on-error: true