name: Development Assistance

on:
  pull_request:
    types: [opened, synchronize, ready_for_review]
  issue_comment:
    types: [created]

permissions:
  contents: read
  issues: write
  pull-requests: write
  
jobs:
  code-quality-feedback:
    name: Continuous Quality Feedback
    runs-on: ubuntu-latest
    if: |
      github.event_name == 'push' || 
      (github.event_name == 'pull_request' && !github.event.pull_request.draft)
    defaults:
      run:
        working-directory: frontends/nextjs
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Setup Bun
        uses: oven-sh/setup-bun@v2
        with:
          bun-version: '1.3.4'

      - name: Cache Bun dependencies
        uses: actions/cache@v4
        with:
          key: bun-deps-${{ runner.os }}-${{ hashFiles('bun.lock') }}
          path: |
            frontends/nextjs/node_modules
            ~/.bun
          restore-keys: bun-deps-${{ runner.os }}-

      - name: Install dependencies
        run: bun install --frozen-lockfile

      - name: Generate Prisma Client
        run: bun run db:generate
        env:
          DATABASE_URL: file:./dev.db

      - name: Analyze code quality
        id: quality
        run: |
          # Run lint and capture output
          bun run lint > lint-output.txt 2>&1 || echo "LINT_FAILED=true" >> $GITHUB_OUTPUT
          
          # Count TypeScript files and their sizes
          TOTAL_TS_FILES=$(find src -name "*.ts" -o -name "*.tsx" | wc -l)
          LARGE_FILES=$(find src -name "*.ts" -o -name "*.tsx" -exec wc -l {} \; | awk '$1 > 150 {print $2}' | wc -l)
          
          echo "total_ts_files=$TOTAL_TS_FILES" >> $GITHUB_OUTPUT
          echo "large_files=$LARGE_FILES" >> $GITHUB_OUTPUT
          
          # Check for declarative vs imperative balance
          JSON_FILES=$(find src packages -name "*.json" 2>/dev/null | wc -l)
          LUA_SCRIPTS=$(find src packages -name "*.lua" 2>/dev/null | wc -l)
          
          echo "json_files=$JSON_FILES" >> $GITHUB_OUTPUT
          echo "lua_scripts=$LUA_SCRIPTS" >> $GITHUB_OUTPUT
          
          cat lint-output.txt

      - name: Check architectural compliance
        id: architecture
        uses: actions/github-script@v7
        with:
          script: |
            const fs = require('fs');
            const path = require('path');
            
            let issues = [];
            let suggestions = [];
            
            // Get changed files
            let changedFiles = [];
            if (context.eventName === 'pull_request') {
              const { data: files } = await github.rest.pulls.listFiles({
                owner: context.repo.owner,
                repo: context.repo.repo,
                pull_number: context.issue.number,
              });
              changedFiles = files.map(f => f.filename);
            }
            
            // Check for hardcoded components outside ui/
            const hardcodedComponents = changedFiles.filter(f => 
              f.endsWith('.tsx') && 
              f.includes('src/components/') && 
              !f.includes('src/components/ui/') &&
              !f.includes('src/components/shared/') &&
              !['RenderComponent', 'FieldRenderer', 'GenericPage'].some(g => f.includes(g))
            );
            
            if (hardcodedComponents.length > 0) {
              suggestions.push(`Consider if these components could be declarative: ${hardcodedComponents.join(', ')}`);
            }
            
            // Check for database changes without seed data
            const schemaChanged = changedFiles.some(f => f.includes('schema.prisma'));
            const seedChanged = changedFiles.some(f => f.includes('seed'));
            
            if (schemaChanged && !seedChanged) {
              suggestions.push('Database schema changed but no seed data updates detected. Consider updating seed data.');
            }
            
            // Check for new routes without PageRoutes table updates
            const routeFiles = changedFiles.filter(f => f.includes('Route') || f.includes('route'));
            if (routeFiles.length > 0) {
              suggestions.push('Route changes detected. Ensure PageRoutes table is updated for dynamic routing.');
            }
            
            // Check for large TypeScript files
            const largeFiles = parseInt('${{ steps.quality.outputs.large_files }}');
            if (largeFiles > 0) {
              issues.push(`${largeFiles} TypeScript files exceed 150 lines. Consider breaking them into smaller components.`);
            }
            
            return { issues, suggestions };

      - name: Provide development feedback
        if: github.event_name == 'pull_request'
        uses: actions/github-script@v7
        with:
          script: |
            const analysis = JSON.parse('${{ steps.architecture.outputs.result }}');
            const totalFiles = parseInt('${{ steps.quality.outputs.total_ts_files }}');
            const largeFiles = parseInt('${{ steps.quality.outputs.large_files }}');
            const jsonFiles = parseInt('${{ steps.quality.outputs.json_files }}');
            const luaScripts = parseInt('${{ steps.quality.outputs.lua_scripts }}');
            
            let comment = `## 💻 Development Quality Feedback\n\n`;
            
            comment += `### 📊 Code Metrics\n\n`;
            comment += `- TypeScript files: ${totalFiles}\n`;
            comment += `- Files >150 LOC: ${largeFiles} ${largeFiles > 0 ? '⚠️' : '✅'}\n`;
            comment += `- JSON config files: ${jsonFiles}\n`;
            comment += `- Lua scripts: ${luaScripts}\n`;
            comment += `- Declarative ratio: ${((jsonFiles + luaScripts) / Math.max(totalFiles, 1) * 100).toFixed(1)}%\n\n`;
            
            if (analysis.issues.length > 0) {
              comment += `### ⚠️ Architectural Issues\n\n`;
              analysis.issues.forEach(issue => comment += `- ${issue}\n`);
              comment += '\n';
            }
            
            if (analysis.suggestions.length > 0) {
              comment += `### 💡 Suggestions\n\n`;
              analysis.suggestions.forEach(suggestion => comment += `- ${suggestion}\n`);
              comment += '\n';
            }
            
            comment += `### 🎯 Project Goals Reminder\n\n`;
            comment += `- **Declarative First:** Prefer JSON + Lua over TypeScript\n`;
            comment += `- **Component Size:** Keep files under 150 LOC\n`;
            comment += `- **Generic Renderers:** Use RenderComponent for dynamic components\n`;
            comment += `- **Database-Driven:** Store configuration in database, not code\n`;
            comment += `- **Package-Based:** Organize features as importable packages\n\n`;
            
            comment += `**@copilot** can help refactor code to better align with these principles.\n\n`;
            comment += `📖 See [Architecture Guidelines](/.github/copilot-instructions.md)`;
            
            // Check if we already commented
            const { data: comments } = await github.rest.issues.listComments({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
            });
            
            const botComment = comments.find(c => 
              c.user.type === 'Bot' && c.body.includes('Development Quality Feedback')
            );
            
            if (botComment) {
              await github.rest.issues.updateComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                comment_id: botComment.id,
                body: comment
              });
            } else {
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: context.issue.number,
                body: comment
              });
            }

  copilot-interaction:
    name: Handle Copilot Mentions
    runs-on: ubuntu-latest
    if: |
      github.event_name == 'issue_comment' && 
      contains(github.event.comment.body, '@copilot')
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Parse Copilot request
        uses: actions/github-script@v7
        with:
          script: |
            const comment = context.payload.comment.body.toLowerCase();
            const issue = context.payload.issue;
            
            let response = `## 🤖 Copilot Assistance\n\n`;
            
            // Determine what the user is asking for
            if (comment.includes('implement') || comment.includes('fix this')) {
              response += `To implement this with Copilot assistance:\n\n`;
              response += `1. **Create a branch:** \`git checkout -b feature/issue-${issue.number}\`\n`;
              response += `2. **Use Copilot in your IDE** to generate code with context from:\n`;
              response += `   - [Copilot Instructions](/.github/copilot-instructions.md)\n`;
              response += `   - [PRD.md](/PRD.md)\n`;
              response += `   - Existing package structure in \`/packages/\`\n`;
              response += `3. **Follow the architectural principles:**\n`;
              response += `   - Declarative over imperative\n`;
              response += `   - Database-driven configuration\n`;
              response += `   - Generic renderers vs hardcoded components\n`;
              response += `4. **Test your changes:** \`bun run lint && bun run test:e2e\`\n`;
              response += `5. **Create a PR** - The automated workflows will review it\n\n`;
            }
            
            if (comment.includes('review') || comment.includes('check')) {
              response += `Copilot can review this through:\n\n`;
              response += `- **Automated Code Review** workflow (runs on PRs)\n`;
              response += `- **Development Assistance** workflow (runs on pushes)\n`;
              response += `- **Planning & Design** workflow (runs on feature requests)\n\n`;
              response += `Create a PR to trigger comprehensive review!\n\n`;
            }
            
            if (comment.includes('architecture') || comment.includes('design')) {
              response += `### 🏗️ Architectural Guidance\n\n`;
              response += `MetaBuilder follows these principles:\n\n`;
              response += `1. **5-Level Architecture:** User → Admin → God → SuperGod levels\n`;
              response += `2. **Multi-Tenant:** Isolated tenant instances with independent configs\n`;
              response += `3. **Declarative Components:** JSON config + Lua scripts, not TSX\n`;
              response += `4. **Package System:** Self-contained, importable feature bundles\n`;
              response += `5. **Database-First:** All config in Prisma, not hardcoded\n\n`;
              response += `📖 Full details: [PRD.md](/PRD.md)\n\n`;
            }
            
            if (comment.includes('test') || comment.includes('e2e')) {
              response += `### 🧪 Testing with Copilot\n\n`;
              response += `\`\`\`bash\n`;
              response += `# Run E2E tests\n`;
              response += `bun run test:e2e\n\n`;
              response += `# Run with UI\n`;
              response += `bun run test:e2e:ui\n\n`;
              response += `# Run linter\n`;
              response += `bun run lint\n`;
              response += `\`\`\`\n\n`;
              response += `Use Copilot in your IDE to:\n`;
              response += `- Generate test cases based on user stories\n`;
              response += `- Write Playwright selectors and assertions\n`;
              response += `- Create mock data for tests\n\n`;
            }
            
            if (comment.includes('help') || (!comment.includes('implement') && !comment.includes('review') && !comment.includes('architecture') && !comment.includes('test'))) {
              response += `### 🆘 How to Use Copilot\n\n`;
              response += `Mention **@copilot** in comments with:\n\n`;
              response += `- \`@copilot implement this\` - Get implementation guidance\n`;
              response += `- \`@copilot review this\` - Request code review\n`;
              response += `- \`@copilot architecture\` - Get architectural guidance\n`;
              response += `- \`@copilot test this\` - Get testing guidance\n`;
              response += `- \`@copilot fix this issue\` - Request automated fix\n\n`;
              response += `**In your IDE:**\n`;
              response += `- Use GitHub Copilot with context from [Copilot Instructions](/.github/copilot-instructions.md)\n`;
              response += `- Reference the [PRD](/PRD.md) when prompting\n`;
              response += `- Follow patterns from existing packages in \`/packages/\`\n\n`;
            }
            
            response += `---\n`;
            response += `*This is an automated response. For detailed Copilot assistance, use the extension in your IDE with project context.*`;
            
            await github.rest.issues.createComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: issue.number,
              body: response
            });

  suggest-refactoring:
    name: Suggest Refactoring Opportunities
    runs-on: ubuntu-latest
    if: github.event_name == 'pull_request' && !github.event.pull_request.draft
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Analyze refactoring opportunities
        uses: actions/github-script@v7
        with:
          script: |
            const { data: files } = await github.rest.pulls.listFiles({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: context.issue.number,
            });
            
            let opportunities = [];
            
            // Look for opportunities in changed files
            for (const file of files) {
              const patch = file.patch || '';
              
              // Check for repeated code patterns
              if (patch.split('\n').length > 100) {
                opportunities.push({
                  file: file.filename,
                  type: 'Size',
                  suggestion: 'Large changeset - consider breaking into smaller PRs or extracting common utilities'
                });
              }
              
              // Check for hardcoded values
              if (patch.match(/['"][A-Z_]{3,}['"]\s*:/)) {
                opportunities.push({
                  file: file.filename,
                  type: 'Configuration',
                  suggestion: 'Hardcoded constants detected - consider moving to database configuration'
                });
              }
              
              // Check for new TSX components
              if (file.filename.includes('components/') && file.filename.endsWith('.tsx') && file.status === 'added') {
                opportunities.push({
                  file: file.filename,
                  type: 'Architecture',
                  suggestion: 'New component added - could this be implemented declaratively with JSON + Lua?'
                });
              }
              
              // Check for inline styles or complex class strings
              if (patch.includes('style={{') || patch.match(/className="[^"]{50,}"/)) {
                opportunities.push({
                  file: file.filename,
                  type: 'Styling',
                  suggestion: 'Complex styling detected - consider extracting to theme configuration'
                });
              }
            }
            
            if (opportunities.length > 0) {
              let comment = `## 🔄 Refactoring Opportunities\n\n`;
              comment += `**@copilot** identified potential improvements:\n\n`;
              
              const grouped = {};
              opportunities.forEach(opp => {
                if (!grouped[opp.type]) grouped[opp.type] = [];
                grouped[opp.type].push(opp);
              });
              
              for (const [type, opps] of Object.entries(grouped)) {
                comment += `### ${type}\n\n`;
                opps.forEach(opp => {
                  comment += `- **${opp.file}**: ${opp.suggestion}\n`;
                });
                comment += '\n';
              }
              
              comment += `---\n`;
              comment += `These are suggestions, not requirements. Consider them as part of continuous improvement.\n\n`;
              comment += `Use **@copilot** in your IDE to help implement these refactorings.`;
              
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: context.issue.number,
                body: comment
              });
            }