---
name: Update Casks
concurrency: jimeh/homebrew-emacs-builds/update-casks
on:
  workflow_dispatch:
    inputs:
      cask:
        description: "Specific cask to update (all if empty)"
        required: false
        default: ""
      extraArgs:
        description: "Extra arguments passed to emacs-builder cask update"
        required: false
        default: ""

jobs:
  emacs-builder:
    runs-on: "macos-14"
    steps:
      - id: builder_ref
        run: |
          BUILDER_REF=v0.6.60
          echo "ref=${BUILDER_REF}" >> "$GITHUB_OUTPUT"
      - name: Cache emacs-builder (${{ runner.arch }})
        id: cache
        uses: actions/cache@v4
        with:
          path: bin/emacs-builder
          key: emacs-builder-${{ runner.arch }}-${{ steps.builder_ref.outputs.ref }}-0-bin
      - name: Checkout build-emacs-for-macos repo
        if: steps.cache.outputs.cache-hit != 'true'
        uses: actions/checkout@v4
        with:
          repository: jimeh/build-emacs-for-macos
          ref: ${{ steps.builder_ref.outputs.ref }}
          fetch-depth: 0
      - name: Setup Go
        if: steps.cache.outputs.cache-hit != 'true'
        uses: actions/setup-go@v5
        with:
          go-version-file: "go.mod"
      - name: Build emacs-builder tool
        if: steps.cache.outputs.cache-hit != 'true'
        run: make build
      - name: Ensure emacs-builder is executable
        if: steps.cache.outputs.cache-hit != 'true'
        run: chmod +x bin/emacs-builder
      - run: bin/emacs-builder --version
      - name: Upload emacs-builder artifact
        uses: actions/upload-artifact@v4
        with:
          name: emacs-builder-${{ runner.arch }}
          path: bin/emacs-builder
          if-no-files-found: error

  live-check:
    runs-on: "macos-14"
    outputs:
      tap_sha: ${{ steps.tap_sha.outputs.sha }}
    steps:
      - name: Checkout tap repository
        uses: actions/checkout@v4
        with:
          ref: main
          path: tap
      - name: Store tap Git SHA
        id: tap_sha
        run: |
          echo "sha=$(git rev-parse HEAD)" >> $GITHUB_OUTPUT
      - name: Symlink homebrew tap
        run: |
          mkdir -p "$(brew --repo)/Library/Taps/jimeh"
          ln -s "${{ github.workspace }}/tap" \
             "$(brew --repo)/Library/Taps/jimeh/homebrew-emacs-builds"
      - name: brew livecheck (all casks)
        if: ${{ github.event.inputs.cask == '' }}
        run: >-
          brew livecheck --json --quiet --tap jimeh/emacs-builds
          | tee livecheck-results.json
      - name: brew livecheck (specific cask)
        if: ${{ github.event.inputs.cask != '' }}
        run: >-
          brew livecheck --json --quiet
          jimeh/emacs-builds/${{ github.event.inputs.cask }}
          | tee livecheck-results.json
      - name: Upload livecheck-results.json artifact
        uses: actions/upload-artifact@v4
        with:
          name: livecheck-results.json
          path: livecheck-results.json
          if-no-files-found: error

  update-casks:
    runs-on: "macos-14"
    needs: [emacs-builder, live-check]
    steps:
      - name: Checkout tap repository
        uses: actions/checkout@v4
        with:
          ref: ${{ needs.live-check.outputs.tap_sha }}
          path: tap
      - name: Download pre-built emacs-builder artifact
        uses: actions/download-artifact@v4
        with:
          name: emacs-builder-${{ runner.arch }}
          path: bin
      - name: Ensure emacs-builder is executable
        run: chmod +x bin/emacs-builder
      - name: Download livecheck-results.json artifact
        uses: actions/download-artifact@v4
        with:
          name: livecheck-results.json
          path: ./
      - name: Update casks
        run: >-
          bin/emacs-builder
          cask --builds-repository jimeh/emacs-builds
          update --templates-dir tap/templates
          ${{ github.event.inputs.extraArgs }}
          livecheck-results.json
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

  update-meta:
    runs-on: "macos-14"
    needs: [update-casks]
    permissions:
      contents: write
    steps:
      - name: Checkout tap repository main branch
        uses: actions/checkout@v4
        with:
          ref: main
          path: tap
      - name: Symlink homebrew tap
        run: |
          mkdir -p "$(brew --repo)/Library/Taps/jimeh"
          ln -s "${{ github.workspace }}/tap" \
             "$(brew --repo)/Library/Taps/jimeh/homebrew-emacs-builds"
      - name: Checkout tap repository meta branch
        uses: actions/checkout@v4
        with:
          ref: meta
          path: meta
      - name: Install meta dependencies
        run: brew bundle
        working-directory: meta
      - name: Update meta files
        run: make update
        working-directory: meta
      - name: commit and push changes to meta branch
        uses: stefanzweifel/git-auto-commit-action@v5
        with:
          commit_message: "chore(meta): update meta files"
          repository: meta
          branch: meta
          commit_user_name: github-actions[bot]
          commit_user_email: github-actions[bot]@users.noreply.github.com
          commit_author: >-
            github-actions[bot] <github-actions[bot]@users.noreply.github.com>
          skip_dirty_check: false