wp-discourse/.github/workflows/metadata.yml

name: WP Discourse Metadata

on:
  pull_request:
    types:
      - labeled

jobs:
  build:
    if: github.event.label.name == 'release'
    runs-on: ubuntu-latest
    name: Metadata

    steps:
      - name: Checkout base repository
        uses: actions/checkout@v3
        with:
          ref: '${{ github.base_ref }}'

      - name: Store base versions
        run: |
          echo "base_readme_version=$(grep -Pio -m 1 '(?<=Stable tag: )(\d\.\d\.\d)' readme.txt)" >> $GITHUB_ENV
          echo "base_change_version=$(grep -Pio -m 1 '(?<=#### )(\d\.\d\.\d)' readme.txt)" >> $GITHUB_ENV
          echo "base_change_date=$(grep -Pio -m 1 "(?<=#### (\d\.\d\.\d) )(\d\d\/\d\d\/\d\d\d\d)" readme.txt)" >> $GITHUB_ENV
          echo "base_plugin_version=$(grep -Pio -m 1 "(?<=Version: )(\d\.\d\.\d)" wp-discourse.php)" >> $GITHUB_ENV
          echo "base_constant_version=$(grep -Pio -m 1 "(?<=WPDISCOURSE_VERSION\'\, \')(\d\.\d\.\d)" wp-discourse.php)" >> $GITHUB_ENV

      - name: Checkout head repository
        uses: actions/checkout@v3

      - name: Store head versions
        run: |
          echo "head_readme_version=$(grep -Pio -m 1 '(?<=Stable tag: )(\d\.\d\.\d)' readme.txt)" >> $GITHUB_ENV
          echo "head_change_version=$(grep -Pio -m 1 '(?<=#### )(\d\.\d\.\d)' readme.txt)" >> $GITHUB_ENV
          echo "head_change_date=$(grep -Pio -m 1 "(?<=#### (\d\.\d\.\d) )(\d\d\/\d\d\/\d\d\d\d)" readme.txt)" >> $GITHUB_ENV
          echo "head_plugin_version=$(grep -Pio -m 1 "(?<=Version: )(\d\.\d\.\d)" wp-discourse.php)" >> $GITHUB_ENV
          echo "head_constant_version=$(grep -Pio -m 1 "(?<=WPDISCOURSE_VERSION\'\, \')(\d\.\d\.\d)" wp-discourse.php)" >> $GITHUB_ENV

      - name: Setup node
        uses: actions/setup-node@v3
        with:
          node-version: 18
          cache: 'npm'

      - run: npm install --include=dev

      - name: Run checks
        uses: actions/github-script@v6
        with:
          script: |
            const semver = require('semver');
            const variables = [
              'readme_version',
              'change_version',
              'change_date',
              'plugin_version',
              'constant_version'
            ];
            const headVersions = [];

            variables.forEach(variable => {
              let headVar = process.env[`head_${variable}`];
              let baseVar = process.env[`base_${variable}`];
              let type = variable.split('_')[1];

              if (type === 'version') {
                if (semver.lte(headVar, baseVar)) {
                  core.setFailed(`Head ${variable} is less than or equal to base ${variable}.`);
                }
                headVersions.push(headVar);
              }

              if (type === 'date') {
                let headDate = new Date(headVar);
                let baseDate = new Date(baseVar);

                if (headDate.getTime() <= baseDate.getTime()) {
                  core.setFailed(`Head ${variable} is older than or the same as base ${variable}.`);
                }
              }
            });

            if (!headVersions.every(hv => hv === headVersions[0])) {
              core.setFailed('Head versions do not match.');
            }