name: SBOM Monthly Audit

on:
  schedule:
    # First Monday of each month at 09:00 UTC
    - cron: '0 9 1-7 * 1'
  workflow_dispatch:
    inputs:
      branch:
        description: 'Branch to audit (leave empty for current)'
        required: false
        type: string

permissions:
  contents: read
  issues: write

jobs:
  audit:
    runs-on: ubuntu-24.04

    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{ inputs.branch || github.ref }}
          fetch-depth: 1
          submodules: recursive

      - name: Install PyYAML
        run: pip install pyyaml --break-system-packages

      - name: Run license verification
        id: verify
        continue-on-error: true
        run: |
          python3 Tools/ci/generate_sbom.py --verify-licenses --source-dir . 2>&1 | tee /tmp/sbom-verify.txt
          echo "exit_code=$?" >> "$GITHUB_OUTPUT"

      - name: Check for issues
        id: check
        run: |
          if grep -q "<-- UNRESOLVED" /tmp/sbom-verify.txt; then
            echo "has_issues=true" >> "$GITHUB_OUTPUT"
            # Extract only genuinely unresolved license lines
            grep "<-- UNRESOLVED" /tmp/sbom-verify.txt > /tmp/sbom-issues.txt || true
            # Extract copyleft lines
            sed -n '/Copyleft licenses detected/,/^$/p' /tmp/sbom-verify.txt > /tmp/sbom-copyleft.txt || true
          else
            echo "has_issues=false" >> "$GITHUB_OUTPUT"
          fi

      - name: Create issue if problems found
        if: steps.check.outputs.has_issues == 'true'
        uses: actions/github-script@v7
        with:
          script: |
            const fs = require('fs');

            const fullOutput = fs.readFileSync('/tmp/sbom-verify.txt', 'utf8');
            let issueLines = '';
            try {
              issueLines = fs.readFileSync('/tmp/sbom-issues.txt', 'utf8');
            } catch (e) {
              issueLines = 'No specific NOASSERTION lines captured.';
            }
            let copyleftLines = '';
            try {
              copyleftLines = fs.readFileSync('/tmp/sbom-copyleft.txt', 'utf8');
            } catch (e) {
              copyleftLines = '';
            }

            const date = new Date().toISOString().split('T')[0];
            const branch = '${{ inputs.branch || github.ref_name }}';

            // Check for existing open issue to avoid duplicates
            const existing = await github.rest.issues.listForRepo({
              owner: context.repo.owner,
              repo: context.repo.repo,
              labels: 'sbom-audit',
              state: 'open',
            });

            if (existing.data.length > 0) {
              // Update existing issue with new findings
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: existing.data[0].number,
                body: `## Monthly audit update (${date})\n\nIssues still present:\n\n\`\`\`\n${issueLines}\n\`\`\`\n${copyleftLines ? `\n### Copyleft warnings\n\`\`\`\n${copyleftLines}\n\`\`\`` : ''}`,
              });
              return;
            }

            await github.rest.issues.create({
              owner: context.repo.owner,
              repo: context.repo.repo,
              title: `chore(sbom): license audit found NOASSERTION entries on ${branch} (${date})`,
              labels: ['sbom-audit'],
              assignees: ['mrpollo'],
              body: [
                `## SBOM Monthly Audit -- ${branch} -- ${date}`,
                '',
                'The automated SBOM license audit found submodules with unresolved licenses.',
                '',
                '### NOASSERTION entries',
                '',
                '```',
                issueLines,
                '```',
                '',
                copyleftLines ? `### Copyleft warnings\n\n\`\`\`\n${copyleftLines}\n\`\`\`\n` : '',
                '### How to fix',
                '',
                '1. Check the submodule repo for a LICENSE file',
                '2. Add an override to `Tools/ci/license-overrides.yaml`',
                '3. Run `python3 Tools/ci/generate_sbom.py --verify-licenses --source-dir .` to confirm',
                '',
                '### Full output',
                '',
                '<details>',
                '<summary>Click to expand</summary>',
                '',
                '```',
                fullOutput,
                '```',
                '',
                '</details>',
                '',
                'cc @mrpollo',
              ].join('\n'),
            });