# this workflow runs the remote validate bake target from docker/docker.github.io
# to check if yaml reference docs and markdown files used in this repo are still valid
# https://github.com/docker/docker.github.io/blob/98c7c9535063ae4cd2cd0a31478a21d16d2f07a3/docker-bake.hcl#L34-L36
name: docs-upstream

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

on:
  push:
    branches:
      - 'master'
      - 'v[0-9]*'
    paths:
      - '.github/workflows/docs-upstream.yml'
      - 'docs/**'
  pull_request:
    paths:
      - '.github/workflows/docs-upstream.yml'
      - 'docs/**'

jobs:
  docs-yaml:
    runs-on: ubuntu-latest
    steps:
      -
        name: Checkout
        uses: actions/checkout@v3
      -
        name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2
        with:
          version: latest
      -
        name: Build reference YAML docs
        uses: docker/bake-action@v2
        with:
          targets: update-docs
          set: |
            *.output=/tmp/buildx-docs
            *.cache-from=type=gha,scope=docs-yaml
            *.cache-to=type=gha,scope=docs-yaml,mode=max
        env:
          DOCS_FORMATS: yaml
      -
        name: Upload reference YAML docs
        uses: actions/upload-artifact@v3
        with:
          name: docs-yaml
          path: /tmp/buildx-docs/out/reference
          retention-days: 1

  validate:
    runs-on: ubuntu-latest
    needs:
      - docs-yaml
    steps:
      -
        name: Checkout
        uses: actions/checkout@v3
        with:
          repository: docker/docker.github.io
      -
        name: Install js-yaml
        run: npm install js-yaml
      -
        # use the actual buildx ref that triggers this workflow, so we make
        # sure pages fetched by docs repo are still valid
        # https://github.com/docker/docker.github.io/blob/98c7c9535063ae4cd2cd0a31478a21d16d2f07a3/_config.yml#L164-L173
        name: Set correct ref to fetch remote resources
        uses: actions/github-script@v6
        with:
          script: |
            const fs = require('fs');
            const yaml = require('js-yaml');

            const configFile = '_config.yml'
            const config = yaml.load(fs.readFileSync(configFile, 'utf8'));
            for (const remote of config['fetch-remote']) {
              if (remote['repo'] != 'https://github.com/docker/buildx') {
                continue;
              }
              remote['ref'] = "${{ github.ref }}";
            }

            try {
              fs.writeFileSync(configFile, yaml.dump(config), 'utf8')
            } catch (err) {
              console.error(err.message)
              process.exit(1)
            }
      -
        name: Prepare
        run: |
          # print docs jekyll config updated in previous step
          yq _config.yml
          # cleanup reference yaml docs and js-yaml module
          rm -rf ./_data/buildx/* ./node_modules
      -
        name: Download built reference YAML docs
        uses: actions/download-artifact@v3
        with:
          name: docs-yaml
          path: ./_data/buildx/
      -
        name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2
        with:
          version: latest
      -
        name: Validate
        uses: docker/bake-action@v2
        with:
          targets: validate
          set: |
            *.cache-from=type=gha,scope=docs-upstream
            *.cache-to=type=gha,scope=docs-upstream,mode=max