name: Gitea Version Tracker

on:
  schedule:
    # Daily at 08:00 UTC — check for new Gitea releases
    - cron: '0 8 * * *'
  repository_dispatch:
    types: [gitea-release]
  workflow_dispatch:
    inputs:
      version:
        description: 'Gitea version (e.g. 1.27.0) — leave empty to auto-detect'
        required: false

jobs:
  track:
    name: Track Gitea Release
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write
    steps:
      - uses: actions/checkout@v4

      - name: Determine latest Gitea version
        id: version
        run: |
          if [ -n "${{ github.event.inputs.version }}" ]; then
            NEW_VERSION="${{ github.event.inputs.version }}"
          else
            # Fetch latest release from Gitea API
            RELEASE_JSON=$(curl -sSf https://gitea.com/api/v1/repos/gitea/gitea/releases/latest)
            NEW_VERSION=$(echo "$RELEASE_JSON" | jq -r '.tag_name')
          fi
          echo "New Gitea version: $NEW_VERSION"
          echo "new_version=$NEW_VERSION" >> $GITHUB_OUTPUT

          # Parse current max tested from COMPATIBILITY.md
          CURRENT=$(grep -oP 'Max Tested Gitea.*?\|\s*\*\*\K[0-9.]+' COMPATIBILITY.md)
          echo "Current max tested: $CURRENT"
          echo "current_version=$CURRENT" >> $GITHUB_OUTPUT

          if [ "$NEW_VERSION" = "$CURRENT" ]; then
            echo "No new Gitea release detected. Skipping."
            echo "skip=true" >> $GITHUB_OUTPUT
          else
            echo "New version detected: $CURRENT → $NEW_VERSION"
            echo "skip=false" >> $GITHUB_OUTPUT
          fi

      - name: Update COMPATIBILITY.md — Quick Reference
        if: steps.version.outputs.skip != 'true'
        run: |
          NEW="${{ steps.version.outputs.new_version }}"
          sed -i "s/|\*\*\([0-9.]*\)\*\* | \*\*[0-9.]*\*\* |/\|\*\*\1\*\* | \*\*${NEW}\*\* |/" COMPATIBILITY.md

      - name: Update COMPATIBILITY.md — Version History table
        if: steps.version.outputs.skip != 'true'
        run: |
          NEW="${{ steps.version.outputs.new_version }}"
          TODAY=$(date +%Y-%m-%d)
          # Insert new row after the table header (line with "|---|---")
          ROW="| **${NEW}** | ${TODAY} | ⏳ Pending Verification | TBD |"
          sed -i "/^|---/a ${ROW}" COMPATIBILITY.md

      - name: Update COMPATIBILITY.md — latest verified note
        if: steps.version.outputs.skip != 'true'
        run: |
          NEW="${{ steps.version.outputs.new_version }}"
          # Update the "Latest verified" note
          sed -i "s/Gitea [0-9.]* data contexts/Gitea ${NEW} data contexts/" COMPATIBILITY.md

      - name: Update README.md badge
        if: steps.version.outputs.skip != 'true'
        run: |
          NEW="${{ steps.version.outputs.new_version }}"
          # Update the shields.io badge
          sed -i "s/\(tested\)-[0-9a-z.]*\(blue\)/\1-${NEW}\2/" README.md
          # Update the "Latest tested" line
          sed -i "s/Latest tested:\*\* Gitea [0-9.]*/Latest tested:** Gitea ${NEW}/" README.md

      - name: Update README translations
        if: steps.version.outputs.skip != 'true'
        run: |
          NEW="${{ steps.version.outputs.new_version }}"
          for f in docs/README.{ja,ko,ru,zh-CN,zh-TW}.md; do
            # Update version number in the compatibility section
            sed -i "s/テスト:\*\* Gitea [0-9.]*/テスト:** Gitea ${NEW}/" "$f"
            sed -i "s/테스트:\*\* Gitea [0-9.]*/테스트:** Gitea ${NEW}/" "$f"
            sed -i "s/проверка:\*\* Gitea [0-9.]*/проверка:** Gitea ${NEW}/" "$f"
            sed -i "s/测试：\*\* Gitea [0-9.]*/测试：** Gitea ${NEW}/" "$f"
            sed -i "s/測試：\*\* Gitea [0-9.]*/測試：** Gitea ${NEW}/" "$f"
          done

      - name: Create Pull Request
        if: steps.version.outputs.skip != 'true'
        uses: peter-evans/create-pull-request@v7
        with:
          branch: track/gitea-${{ steps.version.outputs.new_version }}
          commit-message: "docs: track Gitea ${{ steps.version.outputs.new_version }} — pending verification"
          title: "⬆️ Track Gitea ${{ steps.version.outputs.new_version }} — ⏳ Pending Verification"
          body: |
            Gitea **${{ steps.version.outputs.new_version }}** has been released.

            This PR:
            - Updates the compatibility matrix in `COMPATIBILITY.md`
            - Updates version badges in `README.md` and translations
            - Marks the new version as **⏳ Pending Verification**

            ## Verification Checklist
            - [ ] Check [Gitea changelog](https://github.com/go-gitea/gitea/blob/main/CHANGELOG.md) for mail template changes
            - [ ] Review diff of official templates: `git diff v${{ steps.version.outputs.current_version }}..v${{ steps.version.outputs.new_version }} -- templates/mail/ services/mailer/`
            - [ ] Run `cd tools && go run . preview all` to confirm templates still render
            - [ ] Update status from ⏳ to ✅ (compatible) or ❌ (breaking) in COMPATIBILITY.md
            - [ ] Update the `Mail Template Changes` and `Breaking?` columns with accurate notes
          labels: compatibility, automated
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}