name: Go generate check

on:
  workflow_dispatch:
  push:
    branches:
      - main
      - "release/**"
  pull_request:

jobs:
  go-generate:
    runs-on: ubuntu-22.04
    steps:
      - name: Checkout
        uses: actions/checkout@755da8c3cf115ac066823e79a1e1788f8940201b # v3.2.0
        with:
          path: constellation
          ref: ${{ !github.event.pull_request.head.repo.fork && github.head_ref || '' }}
          token: ${{ !github.event.pull_request.head.repo.fork && secrets.TIDY_RENOVATE_PUSH || '' }}

      - name: Setup Go
        uses: actions/setup-go@6edd4406fa81c3da01a34fa6f6343087c207a568 # v3.5.0
        with:
          go-version: "1.19.4"
          cache: true
          cache-dependency-path: constellation/go.mod

      - name: Install docgen
        uses: ./constellation/.github/actions/install_docgen

      - name: Install stringer
        shell: bash
        run: go install golang.org/x/tools/cmd/stringer@latest

      - name: Get Go submodules
        id: submods
        shell: bash
        working-directory: constellation
        run: |
          mods=$(go list -f '{{.Dir}}' -m | xargs)
          echo "Found mods: $mods"
          echo "submods=${mods}" >> "$GITHUB_OUTPUT"

      - name: Go generate check
        id: generatecheck
        shell: bash
        working-directory: constellation
        run: |
          mods="${{ steps.submods.outputs.submods }}"
          for mod in $mods; do
              go generate $mod/...
          done
          git diff --exit-code

      - name: Push changes on renovate branch
        if: |
          failure() &&
          (steps.generatecheck.conclusion == 'failure')
          && startsWith(github.head_ref, 'renovate/') &&
          !github.event.pull_request.head.repo.fork
        shell: bash
        working-directory: constellation
        run: |
          diff_dirs=$(git diff --name-only)
          if [[ "${diff_dirs}" == "internal/versions/versions.go" ]]; then
            echo "internal/versions/versions.go is the only changed file, so we can push the changes."
            git config --global user.name "renovate[bot]"
            git config --global user.email "29139614+renovate[bot]@users.noreply.github.com"
            git commit -am "[bot] Update versions.go"
            git push
          fi
