name: Create Draft Release

on:
  push:
    tags:
      - '[0-9]+.[0-9]+.[0-9]+'

jobs:
  create-draft-release:
    name: Create Draft Release
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: read

    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Get previous tag
        id: previous_tag
        run: |
          # Get all tags sorted by version
          PREVIOUS_TAG=$(git tag -l '[0-9]*.[0-9]*.[0-9]*' --sort=-v:refname | sed -n '2p')
          echo "previous_tag=$PREVIOUS_TAG" >> $GITHUB_OUTPUT
          echo "Previous tag: $PREVIOUS_TAG"

      - name: Generate release notes
        id: release_notes
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          CURRENT_TAG="${{ github.ref_name }}"
          PREVIOUS_TAG="${{ steps.previous_tag.outputs.previous_tag }}"

          if [ -z "$PREVIOUS_TAG" ]; then
            echo "No previous tag found. This is the first release."
            # Get all merged PRs
            PRS=$(gh pr list --state merged --json number,title,mergedAt --jq '.[] | "\(.number)|\(.title)"')
          else
            # Get the date of the previous tag
            PREVIOUS_DATE=$(git log -1 --format=%aI $PREVIOUS_TAG)
            echo "Previous tag date: $PREVIOUS_DATE"

            # Get all PRs merged since the previous tag
            PRS=$(gh pr list --state merged --search "merged:>=$PREVIOUS_DATE" --json number,title --jq '.[] | "\(.number)|\(.title)"')
          fi

          echo "Found PRs:"
          echo "$PRS"
          echo "---"

          # Separate fixes from other PRs
          FIXES=""
          OTHERS=""

          while IFS='|' read -r PR_NUM PR_TITLE; do
            if [ -n "$PR_NUM" ]; then
              PR_LINE="- https://github.com/${{ github.repository }}/pull/$PR_NUM - $PR_TITLE"

              # Check if it's a fix (case-insensitive)
              if echo "$PR_TITLE" | grep -iE "^(fix|bugfix|hotfix)" > /dev/null; then
                FIXES="$FIXES$PR_LINE"$'\n'
              else
                OTHERS="$OTHERS$PR_LINE"$'\n'
              fi
            fi
          done <<< "$PRS"

          # Create release notes
          {
            if [ -n "$FIXES" ]; then
              echo "This release fixes:"
              echo ""
              echo "$FIXES"
            fi

            if [ -n "$OTHERS" ]; then
              if [ -n "$FIXES" ]; then
                echo "Other Pull Requests:"
              else
                echo "This release includes:"
              fi
              echo ""
              echo "$OTHERS"
            fi

            if [ -z "$FIXES" ] && [ -z "$OTHERS" ]; then
              echo "No pull requests were merged in this release."
              echo ""
            fi

            echo "## Installation"
            echo ""
            echo "**Download directly from GitHub Releases**"
            echo ""
            echo "Download the \`.zip\` file from this release, extract it, and drag OMG.app to your Applications folder."
            echo ""
            echo "**Install via [Homebrew](https://brew.sh)**"
            echo ""
            echo "\`\`\`bash"
            echo "brew tap otaviocc/apps"
            echo "brew install --cask triton"
            echo "\`\`\`"
            echo ""
            echo "**Upgrade via Homebrew**"
            echo ""
            echo "If you installed Triton using Homebrew, upgrade to the latest version with:"
            echo ""
            echo "\`\`\`bash"
            echo "brew upgrade --cask triton"
            echo "\`\`\`"
          } > release_notes.md

          cat release_notes.md

      - name: Create Draft Release
        uses: softprops/action-gh-release@v2
        with:
          draft: true
          name: Release ${{ github.ref_name }}
          body_path: release_notes.md
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}