name: Publish Changelog

on:
  release:
    types: [published, edited]

jobs:
  generate-files:
    runs-on: ubuntu-latest
    permissions:
      contents: write

    steps:
      - name: Clone main branch
        uses: actions/checkout@v4
        with:
          ref: main
          fetch-depth: 0

      - name: Calculate version code
        id: vercode
        run: |
          echo "versionCode=$(git rev-list --count HEAD)" >> $GITHUB_OUTPUT

      - name: Fetch release metadata
        id: release
        env:
          ASSETS: ${{ toJson(github.event.release.assets) }}
        run: |
          echo "tag=${{ github.event.release.tag_name }}" >> $GITHUB_OUTPUT
          echo "notes<<EOF" >> $GITHUB_OUTPUT
          echo "${{ github.event.release.body }}" >> $GITHUB_OUTPUT
          echo "EOF" >> $GITHUB_OUTPUT

          URL=$(echo "$ASSETS" | jq -r '.[] | select(.name | endswith("release.zip")) | .browser_download_url' | head -n1)
          if [ -z "$URL" ]; then
            echo "::error::Missing .zip asset in release uploads."
            echo "$ASSETS" | jq -r '.[].name'
            exit 1
          fi
          echo "zip_url=$URL" >> $GITHUB_OUTPUT

      - name: Checkout changelog branch
        uses: actions/checkout@v4
        with:
          ref: changelog
          path: changelog-branch

      - name: Write changelog and JSON
        run: |
          cd changelog-branch

          echo "${{ steps.release.outputs.notes }}" > changelog.md

          cat <<EOF > update.json
          {
            "version": "${{ steps.release.outputs.tag }}",
            "versionCode": ${{ steps.vercode.outputs.versionCode }},
            "zipUrl": "${{ steps.release.outputs.zip_url }}",
            "changelog": "https://raw.githubusercontent.com/beakthoven/TrickyStore/changelog/changelog.md"
          }
          EOF

      - name: Commit and push updates
        run: |
          cd changelog-branch
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"

          git add changelog.md update.json
          git commit -m "Update metadata for ${{ steps.release.outputs.tag }}"
          git push origin changelog -f