# =============================================================================
# BetterDesk — stable release on merge to main
# =============================================================================
# When a PR is merged into main, bump minor version (+0.1.0), tag vX.Y.Z,
# and publish a GitHub Release. Existing release-server and docker-publish
# workflows run on the new tag / release event.
# =============================================================================

name: Version Bump & Release (main)

on:
  pull_request:
    types: [closed]
    branches: [main]

permissions:
  contents: write

concurrency:
  group: stable-release-main
  cancel-in-progress: false

jobs:
  release-stable:
    if: github.event.pull_request.merged == true
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
          ref: main
          token: ${{ secrets.GITHUB_TOKEN }}

      - uses: actions/setup-node@v4
        with:
          node-version: '24'

      - name: Bump version (minor release or hotfix patch)
        id: bump
        env:
          PR_LABELS: ${{ join(github.event.pull_request.labels.*.name, ',') }}
          PR_TITLE: ${{ github.event.pull_request.title }}
        run: |
          # Stable feature releases: +0.1.0. Hotfix PRs (label "hotfix" or title
          # containing "hotfix", e.g. 3.4.0 → 3.4.1): +0.0.1.
          BUMP_ARGS=(--minor)
          LABELS_LC=$(echo "$PR_LABELS" | tr '[:upper:]' '[:lower:]')
          TITLE_LC=$(echo "$PR_TITLE" | tr '[:upper:]' '[:lower:]')
          if echo "$LABELS_LC" | grep -qw 'hotfix' || echo "$TITLE_LC" | grep -q 'hotfix'; then
            BUMP_ARGS=(--patch)
            echo "Hotfix detected — using patch bump (+0.0.1)"
          else
            echo "Stable release — using minor bump (+0.1.0)"
          fi
          node scripts/bump-version.js "${BUMP_ARGS[@]}"
          NEW_VERSION=$(cat VERSION | tr -d '\n')
          echo "version=${NEW_VERSION}" >> "$GITHUB_OUTPUT"

      - name: Commit version bump to main
        env:
          NEW_VERSION: ${{ steps.bump.outputs.version }}
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git add $(node scripts/bump-version.js --list-paths)
          if git diff --cached --quiet; then
            echo "No version files changed — skipping release bump commit"
            exit 0
          fi
          git commit -m "chore: release version ${NEW_VERSION} [version-bump]"
          git push origin HEAD:main

      - name: Sync checkout to bumped main
        run: |
          git fetch origin main --tags
          git reset --hard origin/main

      - name: Create tag and GitHub Release
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          NEW_VERSION: ${{ steps.bump.outputs.version }}
        run: |
          TAG="v${NEW_VERSION}"
          if git rev-parse "$TAG" >/dev/null 2>&1; then
            echo "Tag ${TAG} already exists — skipping tag/release creation"
            exit 0
          fi
          git tag "$TAG"
          git push origin "$TAG"

          NOTES_FILE=$(mktemp)
          awk -v ver="${NEW_VERSION}" '
            BEGIN { found=0 }
            /^## \[/ {
              if ($0 ~ "\\[" ver "\\]") { found=1; print; next }
              if (found && /^## \[/ && $0 !~ "\\[" ver "\\]") { exit }
            }
            found { print }
          ' CHANGELOG.md > "$NOTES_FILE"

          if [ ! -s "$NOTES_FILE" ]; then
            echo "BetterDesk ${NEW_VERSION} stable release." > "$NOTES_FILE"
          fi

          gh release create "$TAG" \
            --title "BetterDesk ${NEW_VERSION}" \
            --notes-file "$NOTES_FILE"