name: Broken Links Report

on:
  schedule:
    # Run every Saturday at 2 AM UTC
    - cron: "0 2 * * 6"
  workflow_dispatch:

jobs:
  check-links:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      issues: write

    steps:
      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # ratchet:actions/checkout@v5.0.0

      - uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # ratchet:actions/setup-node@v5.0.0
        with:
          node-version: lts/*

      - uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # ratchet:actions/cache@v4.3.0
        with:
          path: ~/.npm
          key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
          restore-keys: |
            ${{ runner.os }}-node-

      - name: Install Dependencies
        run: npm ci --ignore-scripts --no-audit --no-progress --prefer-offline

      - name: Run Link Check
        id: link_check
        run: |
          npm test > link_check_output.txt 2>&1 || true
          if grep -q "❌ ERROR" link_check_output.txt; then
            echo "has_errors=true" >> $GITHUB_OUTPUT
          else
            echo "has_errors=false" >> $GITHUB_OUTPUT
          fi
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Create/Update Issue for Broken Links
        if: steps.link_check.outputs.has_errors == 'true'
        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # ratchet:actions/github-script@v8
        with:
          script: |
            const fs = require('fs');
            const output = fs.readFileSync('link_check_output.txt', 'utf8');

            // Extract error information
            const errorMatch = output.match(/❌ ERROR[\s\S]*$/);
            const errorInfo = errorMatch ? errorMatch[0] : 'Link check failed - see workflow logs';

            const issueBody = `# 🔗 Broken Links Detected

            The weekly link check has found broken or inaccessible links in the repository.

            ## Error Details

            \`\`\`
            ${errorInfo}
            \`\`\`

            ## Action Required

            Please review and fix the broken links above. Options:
            - Update the URL if the resource moved
            - Remove the entry if it's permanently unavailable
            - Add to \`tests/exclude_in_test.json\` if it's a known false positive

            ---
            *Auto-generated by [broken_links.yml](https://github.com/veggiemonk/awesome-docker/blob/master/.github/workflows/broken_links.yml)*
            `;

            // Check for existing issue
            const issues = await github.rest.issues.listForRepo({
              owner: context.repo.owner,
              repo: context.repo.repo,
              state: 'open',
              labels: 'broken-links',
              per_page: 1
            });

            if (issues.data.length > 0) {
              await github.rest.issues.update({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: issues.data[0].number,
                body: issueBody
              });
              console.log(`Updated issue #${issues.data[0].number}`);
            } else {
              const issue = await github.rest.issues.create({
                owner: context.repo.owner,
                repo: context.repo.repo,
                title: '🔗 Broken Links Detected - Action Required',
                body: issueBody,
                labels: ['broken-links', 'bug']
              });
              console.log(`Created issue #${issue.data.number}`);
            }

      - name: Close Issue if No Errors
        if: steps.link_check.outputs.has_errors == 'false'
        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # ratchet:actions/github-script@v8
        with:
          script: |
            const issues = await github.rest.issues.listForRepo({
              owner: context.repo.owner,
              repo: context.repo.repo,
              state: 'open',
              labels: 'broken-links',
              per_page: 1
            });

            if (issues.data.length > 0) {
              await github.rest.issues.update({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: issues.data[0].number,
                state: 'closed',
                state_reason: 'completed'
              });
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: issues.data[0].number,
                body: '✅ All links are now working! Closing this issue.'
              });
              console.log(`Closed issue #${issues.data[0].number}`);
            }