name: Publish Cask

on:
  release:
    types: [published]
  workflow_dispatch:
    inputs:
      tag:
        description: 'Release tag to publish the cask for (e.g. v0.1.0)'
        required: true

permissions:
  contents: read

jobs:
  publish-cask:
    runs-on: ubuntu-latest
    steps:
      - name: Resolve tag and version
        id: meta
        run: |
          TAG="${{ github.event.release.tag_name || github.event.inputs.tag }}"
          echo "tag=$TAG" >> "$GITHUB_OUTPUT"
          echo "version=${TAG#v}" >> "$GITHUB_OUTPUT"

      - name: Download dmg and compute sha256
        id: sha
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          ASSET="purerequest_${{ steps.meta.outputs.version }}_universal.dmg"
          gh release download "${{ steps.meta.outputs.tag }}" \
            --repo "${{ github.repository }}" \
            --pattern "$ASSET" \
            --dir /tmp
          SHA=$(sha256sum "/tmp/$ASSET" | awk '{print $1}')
          echo "sha256=$SHA" >> "$GITHUB_OUTPUT"

      - name: Checkout tap
        uses: actions/checkout@v4
        with:
          repository: piotrzielinski1994/homebrew-tap
          ssh-key: ${{ secrets.TAP_DEPLOY_KEY }}
          path: tap

      - name: Write cask
        env:
          VERSION: ${{ steps.meta.outputs.version }}
          SHA: ${{ steps.sha.outputs.sha256 }}
        run: |
          cat > tap/Casks/purerequest.rb <<EOF
          cask "purerequest" do
            version "$VERSION"
            sha256 "$SHA"

            url "https://github.com/piotrzielinski1994/purerequest/releases/download/v#{version}/purerequest_#{version}_universal.dmg"
            name "purerequest"
            desc "HTTP request client"
            homepage "https://github.com/piotrzielinski1994/purerequest"

            app "purerequest.app"

            zap trash: [
              "~/Library/Application Support/com.pzielinski.purerequest",
              "~/Library/Caches/com.pzielinski.purerequest",
              "~/Library/Preferences/com.pzielinski.purerequest.plist",
              "~/Library/Saved Application State/com.pzielinski.purerequest.savedState",
            ]
          end
          EOF

      - name: Commit and push
        working-directory: tap
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git add Casks/purerequest.rb
          if git diff --cached --quiet; then
            echo "Cask already up to date for ${{ steps.meta.outputs.version }}"
            exit 0
          fi
          git commit -m "purerequest ${{ steps.meta.outputs.version }}"
          git push