name: "Update Go Workspace for Dependabot PRs"
on:
  pull_request:
    branches: [main]
    paths:
      - .github/workflows/pr-dependabot-update-go-workspace.yml
      - go.mod
      - go.sum
      - go.work
      - go.work.sum
      - '**/go.mod'
      - '**/go.sum'
      - '**.go'
permissions:
  contents: write
  id-token: write
jobs:
  update:
    runs-on: "ubuntu-latest"
    if: ${{ github.actor == 'dependabot[bot]' && github.event.pull_request.head.repo.full_name == github.repository }}
    continue-on-error: true
    steps:
    - name: Retrieve GitHub App secrets
      id: get-secrets
      uses: grafana/shared-workflows/actions/get-vault-secrets@get-vault-secrets-v1.0.1 # zizmor: ignore[unpinned-uses]
      with:
        repo_secrets: |
          APP_ID=grafana-go-workspace-bot:app-id
          APP_INSTALLATION_ID=grafana-go-workspace-bot:app-installation-id
          PRIVATE_KEY=grafana-go-workspace-bot:private-key

    - name: Generate GitHub App token
      id: generate_token
      uses: actions/create-github-app-token@v1
      with:
        app-id: ${{ env.APP_ID }}
        private-key: ${{ env.PRIVATE_KEY }}

    - name: Checkout repository
      uses: actions/checkout@v4
      with:
        repository: ${{ github.event.pull_request.head.repo.full_name }}
        ref: ${{ github.event.pull_request.head.ref }}
        token: ${{ steps.generate_token.outputs.token }}
        persist-credentials: false

    - name: Set go version
      uses: actions/setup-go@19bb51245e9c80abacb2e91cc42b33fa478b8639
      with:
        go-version-file: go.mod

    - name: Configure Git
      run: |
          git config --local user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git config --local user.name "github-actions[bot]"
          git config --local --add --bool push.autoSetupRemote true

    - name: Update workspace
      run: make update-workspace

    - name: Commit and push workspace changes
      env:
        BRANCH_NAME: ${{ github.head_ref || github.ref_name }} 
      run: |
        if ! git diff --exit-code --quiet; then
          echo "Committing and pushing workspace changes"
          git commit -a -m "update workspace"
          git push origin "$BRANCH_NAME"
        fi