---
name: Content Moderation

'on':
  issues:
    types: [opened, edited]
  issue_comment:
    types: [created, edited]
  pull_request:
    types: [opened, edited]
  pull_request_review_comment:
    types: [created, edited]

jobs:
  moderate-content:
    runs-on: ubuntu-latest
    permissions:
      issues: write
      pull-requests: write
      contents: read
    steps:
      - name: Check for inappropriate content
        id: content-check
        uses: actions/github-script@v7
        with:
          script: |
            // Define inappropriate content patterns
            const hateWords = [
              // Racial slurs (censored for detection)
              'n[i1]gg[e3]r', 'n[i1]gg[a4]', 'ch[i1]nk', 'sp[i1]c',
              'k[i1]k[e3]', 'w[e3]tb[a4]ck', 'b[e3][a4]n[e3]r',
              'g[o0][o0]k', 'r[a4]gh[e3][a4]d',
              // Homophobic/transphobic slurs
              'f[a4]gg[o0]t', 'tr[a4]nn[y1]', 'd[y1]k[e3]',
              // Religious/ethnic slurs
              'j[e3]w', 'r[a4]gh[e3][a4]d', 'c[a4]m[e3]lj[o0]ck[e3]y',
              // General offensive terms
              'r[e3]t[a4]rd', 'sp[a4]st[i1]c'
            ];

            const profanity = [
              'f[u*]ck[i1]ng?', 'sh[i1]t', 'b[i1]tch', 'c[u*]nt',
              'p[i1]ss', 'd[a4]mn', 'h[e3]ll', 'cr[a4]p', '[a4]ss',
              'b[a4]st[a4]rd'
            ];

            const threats = [
              'k[i1]ll y[o0]u', 'd[i1][e3]', 'murd[e3]r',
              'h[a4]rm y[o0]u', 'hurt y[o0]u', 'destroy y[o0]u',
              'end y[o0]u'
            ];

            // Get content based on event type
            let content = '';
            let contentType = '';
            let itemNumber = 0;

            if (context.eventName === 'issues') {
              content = context.payload.issue.title + ' ' +
                        context.payload.issue.body;
              contentType = 'issue';
              itemNumber = context.payload.issue.number;
            } else if (context.eventName === 'issue_comment') {
              content = context.payload.comment.body;
              contentType = 'issue comment';
              itemNumber = context.payload.issue.number;
            } else if (context.eventName === 'pull_request') {
              content = context.payload.pull_request.title + ' ' +
                        context.payload.pull_request.body;
              contentType = 'pull request';
              itemNumber = context.payload.pull_request.number;
            } else if (context.eventName ===
                       'pull_request_review_comment') {
              content = context.payload.comment.body;
              contentType = 'PR comment';
              itemNumber = context.payload.pull_request.number;
            }

            if (!content) return;

            const normalizedContent = content.toLowerCase()
              .replace(/[^a-z0-9\s]/g, '')
              .replace(/\s+/g, ' ');

            // Check for violations
            let violation = null;
            let severity = 'low';

            // Check hate speech (highest severity)
            for (const word of hateWords) {
              const regex = new RegExp(word, 'i');
              if (regex.test(normalizedContent)) {
                violation = 'hate speech';
                severity = 'critical';
                break;
              }
            }

            // Check threats (high severity)
            if (!violation) {
              for (const threat of threats) {
                const regex = new RegExp(threat, 'i');
                if (regex.test(normalizedContent)) {
                  violation = 'threats';
                  severity = 'high';
                  break;
                }
              }
            }

            // Check excessive profanity (medium severity)
            if (!violation) {
              let profanityCount = 0;
              for (const word of profanity) {
                const regex = new RegExp(word, 'gi');
                const matches = normalizedContent.match(regex);
                if (matches) profanityCount += matches.length;
              }
              if (profanityCount >= 3) {
                violation = 'excessive profanity';
                severity = 'medium';
              }
            }

            // Set outputs
            core.setOutput('violation', violation || 'none');
            core.setOutput('severity', severity);
            core.setOutput('content-type', contentType);
            core.setOutput('item-number', itemNumber);

            if (violation) {
              console.log(
                `⚠️ Detected ${violation} (${severity} severity) ` +
                `in ${contentType} #${itemNumber}`
              );
            }

      - name: Handle critical violations
        if: >-
          steps.content-check.outputs.violation != 'none' &&
          steps.content-check.outputs.severity == 'critical'
        uses: actions/github-script@v7
        with:
          script: |
            const itemNumber =
              ${{ steps.content-check.outputs.item-number }};
            const contentType =
              '${{ steps.content-check.outputs.content-type }}';
            const violation =
              '${{ steps.content-check.outputs.violation }}';

            if (contentType === 'issue') {
              // Close and lock the issue immediately
              await github.rest.issues.update({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: itemNumber,
                state: 'closed'
              });

              await github.rest.issues.lock({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: itemNumber,
                lock_reason: 'off-topic'
              });

              // Add moderation comment
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: itemNumber,
                body: '🚫 **This issue has been automatically closed ' +
                      'and locked due to a Code of Conduct violation.**' +
                      `\n\n**Violation**: ${violation}\n\n` +
                      '**This action was taken because the content ' +
                      'violates our community standards. Repeated ' +
                      'violations may result in being blocked from ' +
                      'this repository.**\n\n📖 Please review our ' +
                      '[Code of Conduct](.github/CODE_OF_CONDUCT.md) ' +
                      'and [Contributing Guidelines]' +
                      '(.github/CONTRIBUTING.md).'
              });
            }

      - name: Handle high severity violations
        if: >-
          steps.content-check.outputs.violation != 'none' &&
          steps.content-check.outputs.severity == 'high'
        uses: actions/github-script@v7
        with:
          script: |
            const itemNumber =
              ${{ steps.content-check.outputs.item-number }};
            const contentType =
              '${{ steps.content-check.outputs.content-type }}';

            if (contentType === 'issue') {
              // Add warning label and comment
              await github.rest.issues.addLabels({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: itemNumber,
                labels: ['moderation-review']
              });

              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: itemNumber,
                body: `⚠️ **Content Warning**: This ${contentType} ` +
                      'has been flagged for moderation review due to ' +
                      'potentially inappropriate content.\n\nPlease ' +
                      'ensure all content follows our ' +
                      '[Code of Conduct](.github/CODE_OF_CONDUCT.md). ' +
                      'A maintainer will review this shortly.'
              });
            }

      - name: Notify maintainers
        if: steps.content-check.outputs.violation != 'none'
        uses: actions/github-script@v7
        with:
          script: |
            const violation =
              '${{ steps.content-check.outputs.violation }}';
            const severity =
              '${{ steps.content-check.outputs.severity }}';
            const contentType =
              '${{ steps.content-check.outputs.content-type }}';
            const itemNumber =
              ${{ steps.content-check.outputs.item-number }};

            // Create a moderation alert issue
            await github.rest.issues.create({
              owner: context.repo.owner,
              repo: context.repo.repo,
              title: `[MODERATION ALERT] ${violation} detected in ` +
                     `${contentType} #${itemNumber}`,
              body: '🚨 **Automated Moderation Alert**\n\n' +
                    '**Details:**\n' +
                    `- **Type**: ${violation} (${severity} severity)\n` +
                    `- **Location**: ${contentType} #${itemNumber}\n` +
                    '- **Action taken**: ' +
                    (severity === 'critical' ?
                     'Automatically closed and locked' :
                     'Flagged for review') +
                    '\n\n**Next steps:**\n' +
                    '- [ ] Review the flagged content\n' +
                    '- [ ] Take additional action if needed\n' +
                    '- [ ] Consider blocking repeat offenders\n\n' +
                    '**Links:**\n' +
                    `- [View ${contentType} #${itemNumber}]` +
                    `(https://github.com/${context.repo.owner}/` +
                    `${context.repo.repo}/` +
                    (contentType === 'issue' ? 'issues' : 'pull') +
                    `/${itemNumber})\n\n` +
                    'This alert was generated automatically by the ' +
                    'content moderation system.',
              labels: ['moderation', 'automated-alert']
            });

            console.log(
              `📧 Created moderation alert for ${violation} ` +
              `in ${contentType} #${itemNumber}`
            );