name: Broken Links Report

on:
  schedule:
    - cron: "0 2 * * 6"
  workflow_dispatch:

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

    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-go@v5
        with:
          go-version: "1.22"

      - name: Build
        run: go build -o awesome-docker ./cmd/awesome-docker

      - name: Run Link Check
        id: link_check
        run: |
          set +e
          ./awesome-docker check > link_check_output.txt 2>&1
          exit_code=$?
          set -e

          has_errors=false
          if [ "$exit_code" -ne 0 ]; then
            has_errors=true
          fi
          if grep -qi "broken links" link_check_output.txt; then
            has_errors=true
          fi

          echo "has_errors=$has_errors" >> "$GITHUB_OUTPUT"
          echo "check_exit_code=$exit_code" >> "$GITHUB_OUTPUT"
        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@v7
        with:
          script: |
            const fs = require('fs');
            const output = fs.readFileSync('link_check_output.txt', 'utf8');
            const exitCode = '${{ steps.link_check.outputs.check_exit_code }}';

            const issueBody = `# Broken Links Detected\n\nThe weekly link check found broken links or the checker failed to execute cleanly.\n\nChecker exit code: ${exitCode}\n\n\`\`\`\n${output}\n\`\`\`\n\n## Action Required\n\n- Update the URL if the resource moved\n- Remove the entry if permanently unavailable\n- Add to \`config/exclude.yaml\` if a known false positive\n- Investigate checker failures when exit code is non-zero\n\n---\n*Auto-generated by broken_links.yml*`;

            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
              });
            } else {
              await github.rest.issues.create({
                owner: context.repo.owner,
                repo: context.repo.repo,
                title: 'Broken Links Detected',
                body: issueBody,
                labels: ['broken-links', 'bug']
              });
            }

      - name: Close Issue if No Errors
        if: steps.link_check.outputs.has_errors == 'false'
        uses: actions/github-script@v7
        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'
              });
            }