name: Performance Testing

on:
  push:
    branches: [ main, master ]
    paths:
      - 'src/animation/**'
      - 'demo/**'
      - 'scripts/**'
  pull_request:
    branches: [ main, master ]
    paths:
      - 'src/animation/**'
      - 'demo/**'
      - 'scripts/**'
  schedule:
    # Run performance tests weekly on Sundays at 3 AM UTC
    - cron: '0 3 * * 0'
  workflow_dispatch:
    inputs:
      test_type:
        description: 'Type of performance test to run'
        required: true
        default: 'all'
        type: choice
        options:
          - all
          - conversion
          - validation
          - memory
          - lighthouse

env:
  NODE_VERSION: '20.x'

jobs:
  conversion-performance:
    name: Animation Conversion Performance
    runs-on: ubuntu-latest
    if: github.event.inputs.test_type == 'all' || github.event.inputs.test_type == 'conversion' || github.event.inputs.test_type == null

    strategy:
      matrix:
        scheme: [legacy, artist, hierarchical, semantic]
        batch_size: [100, 1000, 5000]

    steps:
    - name: Checkout repository
      uses: actions/checkout@v4

    - name: Setup Node.js
      uses: actions/setup-node@v4
      with:
        node-version: ${{ env.NODE_VERSION }}
        cache: 'npm'

    - name: Install dependencies
      run: npm ci

    - name: Generate test data
      run: |
        node -e "
        const fs = require('fs');
        const testData = [];
        const schemes = ['legacy', 'artist', 'hierarchical', 'semantic'];
        const baseNames = [
          'walk', 'run', 'idle', 'jump', 'attack', 'defend', 'crouch', 'climb',
          'swim', 'fly', 'dance', 'wave', 'bow', 'kneel', 'sit', 'stand'
        ];

        for (let i = 0; i < ${{ matrix.batch_size }}; i++) {
          const baseName = baseNames[i % baseNames.length];
          const variant = String(i + 1).padStart(2, '0');

          let animationName;
          switch ('${{ matrix.scheme }}') {
            case 'legacy':
              animationName = \`\${baseName}_\${variant}\`;
              break;
            case 'artist':
              animationName = \`char_\${baseName}_\${variant}\`;
              break;
            case 'hierarchical':
              animationName = \`character/movement/\${baseName}/\${variant}\`;
              break;
            case 'semantic':
              animationName = \`character.movement.\${baseName}.forward\`;
              break;
          }

          testData.push({
            name: animationName,
            sourceScheme: '${{ matrix.scheme }}',
            targetScheme: schemes.filter(s => s !== '${{ matrix.scheme }}')[Math.floor(Math.random() * 3)]
          });
        }

        fs.writeFileSync('test-data.json', JSON.stringify(testData, null, 2));
        console.log(\`Generated \${testData.length} test cases for ${{ matrix.scheme }} scheme\`);
        "

    - name: Run conversion performance test
      run: |
        node -e "
        const fs = require('fs');
        const { AnimationNameMapper } = require('./src/animation/AnimationNameMapper.js');
        const testData = JSON.parse(fs.readFileSync('test-data.json', 'utf8'));

        const mapper = new AnimationNameMapper();
        const results = {
          scheme: '${{ matrix.scheme }}',
          batchSize: ${{ matrix.batch_size }},
          totalConversions: testData.length,
          startTime: Date.now(),
          conversions: [],
          errors: []
        };

        console.log(\`Starting performance test: ${{ matrix.scheme }} scheme, \${testData.length} conversions\`);

        for (const testCase of testData) {
          const startTime = process.hrtime.bigint();

          try {
            const result = mapper.convert(
              testCase.name,
              testCase.sourceScheme,
              testCase.targetScheme
            );

            const endTime = process.hrtime.bigint();
            const duration = Number(endTime - startTime) / 1000000; // Convert to milliseconds

            results.conversions.push({
              input: testCase.name,
              output: result,
              sourceScheme: testCase.sourceScheme,
              targetScheme: testCase.targetScheme,
              duration: duration
            });
          } catch (error) {
            results.errors.push({
              input: testCase.name,
              sourceScheme: testCase.sourceScheme,
              targetScheme: testCase.targetScheme,
              error: error.message
            });
          }
        }

        results.endTime = Date.now();
        results.totalDuration = results.endTime - results.startTime;
        results.averageConversionTime = results.conversions.length > 0
          ? results.conversions.reduce((sum, c) => sum + c.duration, 0) / results.conversions.length
          : 0;
        results.conversionsPerSecond = (results.conversions.length / results.totalDuration) * 1000;
        results.errorRate = (results.errors.length / testData.length) * 100;

        console.log(\`Performance Results:\`);
        console.log(\`  Total Duration: \${results.totalDuration}ms\`);
        console.log(\`  Average Conversion Time: \${results.averageConversionTime.toFixed(2)}ms\`);
        console.log(\`  Conversions per Second: \${results.conversionsPerSecond.toFixed(2)}\`);
        console.log(\`  Error Rate: \${results.errorRate.toFixed(2)}%\`);
        console.log(\`  Successful Conversions: \${results.conversions.length}\`);
        console.log(\`  Failed Conversions: \${results.errors.length}\`);

        // Save detailed results
        fs.writeFileSync('performance-results.json', JSON.stringify(results, null, 2));

        // Performance thresholds
        const MAX_AVG_CONVERSION_TIME = 10; // 10ms
        const MAX_ERROR_RATE = 5; // 5%
        const MIN_CONVERSIONS_PER_SECOND = 100;

        if (results.averageConversionTime > MAX_AVG_CONVERSION_TIME) {
          console.error(\`PERFORMANCE ISSUE: Average conversion time (\${results.averageConversionTime.toFixed(2)}ms) exceeds threshold (\${MAX_AVG_CONVERSION_TIME}ms)\`);
          process.exit(1);
        }

        if (results.errorRate > MAX_ERROR_RATE) {
          console.error(\`PERFORMANCE ISSUE: Error rate (\${results.errorRate.toFixed(2)}%) exceeds threshold (\${MAX_ERROR_RATE}%)\`);
          process.exit(1);
        }

        if (results.conversionsPerSecond < MIN_CONVERSIONS_PER_SECOND) {
          console.error(\`PERFORMANCE ISSUE: Conversions per second (\${results.conversionsPerSecond.toFixed(2)}) below threshold (\${MIN_CONVERSIONS_PER_SECOND})\`);
          process.exit(1);
        }

        console.log('All performance thresholds passed! ✓');
        "

    - name: Upload performance results
      uses: actions/upload-artifact@v4
      with:
        name: performance-results-${{ matrix.scheme }}-${{ matrix.batch_size }}
        path: performance-results.json
        retention-days: 30

  memory-performance:
    name: Memory Usage Analysis
    runs-on: ubuntu-latest
    if: github.event.inputs.test_type == 'all' || github.event.inputs.test_type == 'memory' || github.event.inputs.test_type == null

    steps:
    - name: Checkout repository
      uses: actions/checkout@v4

    - name: Setup Node.js
      uses: actions/setup-node@v4
      with:
        node-version: ${{ env.NODE_VERSION }}
        cache: 'npm'

    - name: Install dependencies
      run: npm ci

    - name: Run memory analysis
      run: |
        node --expose-gc -e "
        const { AnimationNameMapper } = require('./src/animation/AnimationNameMapper.js');

        function getMemoryUsage() {
          global.gc();
          const used = process.memoryUsage();
          return {
            rss: Math.round(used.rss / 1024 / 1024 * 100) / 100,
            heapTotal: Math.round(used.heapTotal / 1024 / 1024 * 100) / 100,
            heapUsed: Math.round(used.heapUsed / 1024 / 1024 * 100) / 100,
            external: Math.round(used.external / 1024 / 1024 * 100) / 100
          };
        }

        console.log('Starting memory analysis...');

        const initialMemory = getMemoryUsage();
        console.log('Initial memory usage:', initialMemory);

        // Create multiple mappers to test memory leaks
        const mappers = [];
        for (let i = 0; i < 100; i++) {
          mappers.push(new AnimationNameMapper());
        }

        const afterCreationMemory = getMemoryUsage();
        console.log('After creating 100 mappers:', afterCreationMemory);

        // Perform conversions
        const testAnimations = [
          'char_walk_01', 'char_run_02', 'prop_door_open',
          'character.idle.basic', 'character/movement/walk/forward',
          'idle_basic', 'walk_forward', 'attack_sword'
        ];

        for (let round = 0; round < 10; round++) {
          for (const mapper of mappers) {
            for (const animation of testAnimations) {
              try {
                mapper.convert(animation, 'artist', 'semantic');
                mapper.convert(animation, 'semantic', 'hierarchical');
                mapper.convert(animation, 'hierarchical', 'legacy');
              } catch (error) {
                // Ignore conversion errors for memory test
              }
            }
          }

          if (round % 3 === 0) {
            const memoryUsage = getMemoryUsage();
            console.log(\`Round \${round + 1} memory usage:\`, memoryUsage);
          }
        }

        const finalMemory = getMemoryUsage();
        console.log('Final memory usage:', finalMemory);

        // Calculate memory growth
        const heapGrowth = finalMemory.heapUsed - initialMemory.heapUsed;
        const rssGrowth = finalMemory.rss - initialMemory.rss;

        console.log(\`Heap growth: \${heapGrowth} MB\`);
        console.log(\`RSS growth: \${rssGrowth} MB\`);

        // Memory leak thresholds
        const MAX_HEAP_GROWTH = 50; // 50 MB
        const MAX_RSS_GROWTH = 100; // 100 MB

        if (heapGrowth > MAX_HEAP_GROWTH) {
          console.error(\`MEMORY LEAK: Heap growth (\${heapGrowth} MB) exceeds threshold (\${MAX_HEAP_GROWTH} MB)\`);
          process.exit(1);
        }

        if (rssGrowth > MAX_RSS_GROWTH) {
          console.error(\`MEMORY LEAK: RSS growth (\${rssGrowth} MB) exceeds threshold (\${MAX_RSS_GROWTH} MB)\`);
          process.exit(1);
        }

        console.log('Memory usage within acceptable limits ✓');
        "

  lighthouse-performance:
    name: Demo Performance Audit
    runs-on: ubuntu-latest
    if: github.event.inputs.test_type == 'all' || github.event.inputs.test_type == 'lighthouse' || github.event.inputs.test_type == null

    steps:
    - name: Checkout repository
      uses: actions/checkout@v4

    - name: Setup Node.js
      uses: actions/setup-node@v4
      with:
        node-version: ${{ env.NODE_VERSION }}
        cache: 'npm'

    - name: Install dependencies
      run: npm ci

    - name: Build demo
      run: npm run build:demo

    - name: Install Lighthouse
      run: npm install -g @lhci/cli lighthouse

    - name: Start demo server
      run: |
        npm run preview:demo &
        sleep 10
      env:
        NODE_ENV: production

    - name: Run Lighthouse audit
      run: |
        lighthouse http://localhost:3000 \
          --output=json \
          --output-path=lighthouse-report.json \
          --chrome-flags="--headless --no-sandbox --disable-dev-shm-usage" \
          --only-categories=performance,accessibility,best-practices

    - name: Analyze Lighthouse results
      run: |
        node -e "
        const fs = require('fs');
        const report = JSON.parse(fs.readFileSync('lighthouse-report.json', 'utf8'));

        const scores = {
          performance: report.categories.performance.score * 100,
          accessibility: report.categories.accessibility.score * 100,
          bestPractices: report.categories['best-practices'].score * 100
        };

        const metrics = {
          fcp: report.audits['first-contentful-paint'].numericValue,
          lcp: report.audits['largest-contentful-paint'].numericValue,
          cls: report.audits['cumulative-layout-shift'].numericValue,
          tbt: report.audits['total-blocking-time'].numericValue,
          tti: report.audits['interactive'].numericValue
        };

        console.log('Lighthouse Scores:');
        console.log(\`  Performance: \${scores.performance.toFixed(1)}/100\`);
        console.log(\`  Accessibility: \${scores.accessibility.toFixed(1)}/100\`);
        console.log(\`  Best Practices: \${scores.bestPractices.toFixed(1)}/100\`);

        console.log('\\nCore Web Vitals:');
        console.log(\`  First Contentful Paint: \${(metrics.fcp / 1000).toFixed(2)}s\`);
        console.log(\`  Largest Contentful Paint: \${(metrics.lcp / 1000).toFixed(2)}s\`);
        console.log(\`  Cumulative Layout Shift: \${metrics.cls.toFixed(3)}\`);
        console.log(\`  Total Blocking Time: \${metrics.tbt.toFixed(0)}ms\`);
        console.log(\`  Time to Interactive: \${(metrics.tti / 1000).toFixed(2)}s\`);

        // Performance thresholds
        const thresholds = {
          performance: 90,
          accessibility: 95,
          bestPractices: 90,
          fcp: 2000, // 2 seconds
          lcp: 2500, // 2.5 seconds
          cls: 0.1,
          tbt: 300, // 300ms
          tti: 3800 // 3.8 seconds
        };

        let failed = false;

        if (scores.performance < thresholds.performance) {
          console.error(\`PERFORMANCE ISSUE: Performance score (\${scores.performance.toFixed(1)}) below threshold (\${thresholds.performance})\`);
          failed = true;
        }

        if (scores.accessibility < thresholds.accessibility) {
          console.error(\`ACCESSIBILITY ISSUE: Accessibility score (\${scores.accessibility.toFixed(1)}) below threshold (\${thresholds.accessibility})\`);
          failed = true;
        }

        if (metrics.fcp > thresholds.fcp) {
          console.error(\`PERFORMANCE ISSUE: FCP (\${(metrics.fcp / 1000).toFixed(2)}s) exceeds threshold (\${thresholds.fcp / 1000}s)\`);
          failed = true;
        }

        if (metrics.lcp > thresholds.lcp) {
          console.error(\`PERFORMANCE ISSUE: LCP (\${(metrics.lcp / 1000).toFixed(2)}s) exceeds threshold (\${thresholds.lcp / 1000}s)\`);
          failed = true;
        }

        if (metrics.cls > thresholds.cls) {
          console.error(\`PERFORMANCE ISSUE: CLS (\${metrics.cls.toFixed(3)}) exceeds threshold (\${thresholds.cls})\`);
          failed = true;
        }

        if (failed) {
          process.exit(1);
        }

        console.log('\\nAll performance thresholds passed! ✓');
        "

    - name: Upload Lighthouse report
      uses: actions/upload-artifact@v4
      with:
        name: lighthouse-report
        path: lighthouse-report.json
        retention-days: 30

  generate-performance-report:
    name: Generate Performance Report
    runs-on: ubuntu-latest
    needs: [conversion-performance, memory-performance, lighthouse-performance]
    if: always()

    steps:
    - name: Checkout repository
      uses: actions/checkout@v4

    - name: Download all artifacts
      uses: actions/download-artifact@v4
      with:
        path: artifacts/

    - name: Generate performance report
      run: |
        node -e "
        const fs = require('fs');
        const path = require('path');

        const report = {
          timestamp: new Date().toISOString(),
          commit: process.env.GITHUB_SHA || 'unknown',
          branch: process.env.GITHUB_REF_NAME || 'unknown',
          results: {
            conversion: [],
            memory: null,
            lighthouse: null
          },
          summary: {
            passed: 0,
            failed: 0,
            warnings: []
          }
        };

        // Process conversion performance results
        const artifactsDir = 'artifacts';
        if (fs.existsSync(artifactsDir)) {
          const artifactDirs = fs.readdirSync(artifactsDir);

          for (const dir of artifactDirs) {
            if (dir.startsWith('performance-results-')) {
              const resultFile = path.join(artifactsDir, dir, 'performance-results.json');
              if (fs.existsSync(resultFile)) {
                const result = JSON.parse(fs.readFileSync(resultFile, 'utf8'));
                report.results.conversion.push(result);

                if (result.errorRate <= 5 && result.averageConversionTime <= 10) {
                  report.summary.passed++;
                } else {
                  report.summary.failed++;
                }
              }
            }

            if (dir === 'lighthouse-report') {
              const lightouseFile = path.join(artifactsDir, dir, 'lighthouse-report.json');
              if (fs.existsSync(lightouseFile)) {
                const lighthouse = JSON.parse(fs.readFileSync(lightouseFile, 'utf8'));
                report.results.lighthouse = {
                  performance: lighthouse.categories.performance.score * 100,
                  accessibility: lighthouse.categories.accessibility.score * 100,
                  bestPractices: lighthouse.categories['best-practices'].score * 100,
                  fcp: lighthouse.audits['first-contentful-paint'].numericValue,
                  lcp: lighthouse.audits['largest-contentful-paint'].numericValue,
                  cls: lighthouse.audits['cumulative-layout-shift'].numericValue
                };

                if (report.results.lighthouse.performance >= 90) {
                  report.summary.passed++;
                } else {
                  report.summary.failed++;
                }
              }
            }
          }
        }

        // Generate markdown report
        let markdown = \`# Performance Test Report\\n\\n\`;
        markdown += \`**Date:** \${new Date(report.timestamp).toLocaleString()}\\n\`;
        markdown += \`**Commit:** \${report.commit}\\n\`;
        markdown += \`**Branch:** \${report.branch}\\n\\n\`;

        markdown += \`## Summary\\n\\n\`;
        markdown += \`- ✅ **Passed:** \${report.summary.passed}\\n\`;
        markdown += \`- ❌ **Failed:** \${report.summary.failed}\\n\\n\`;

        if (report.results.conversion.length > 0) {
          markdown += \`## Conversion Performance\\n\\n\`;
          markdown += \`| Scheme | Batch Size | Avg Time (ms) | Conversions/sec | Error Rate (%) |\\n\`;
          markdown += \`|--------|------------|---------------|-----------------|----------------|\\n\`;

          for (const result of report.results.conversion) {
            const status = result.errorRate <= 5 && result.averageConversionTime <= 10 ? '✅' : '❌';
            markdown += \`| \${status} \${result.scheme} | \${result.batchSize} | \${result.averageConversionTime.toFixed(2)} | \${result.conversionsPerSecond.toFixed(2)} | \${result.errorRate.toFixed(2)} |\\n\`;
          }
          markdown += \`\\n\`;
        }

        if (report.results.lighthouse) {
          markdown += \`## Lighthouse Performance\\n\\n\`;
          const l = report.results.lighthouse;
          markdown += \`- **Performance Score:** \${l.performance.toFixed(1)}/100\\n\`;
          markdown += \`- **Accessibility Score:** \${l.accessibility.toFixed(1)}/100\\n\`;
          markdown += \`- **Best Practices Score:** \${l.bestPractices.toFixed(1)}/100\\n\`;
          markdown += \`- **First Contentful Paint:** \${(l.fcp / 1000).toFixed(2)}s\\n\`;
          markdown += \`- **Largest Contentful Paint:** \${(l.lcp / 1000).toFixed(2)}s\\n\`;
          markdown += \`- **Cumulative Layout Shift:** \${l.cls.toFixed(3)}\\n\\n\`;
        }

        fs.writeFileSync('performance-report.json', JSON.stringify(report, null, 2));
        fs.writeFileSync('performance-report.md', markdown);

        console.log('Performance report generated');
        console.log(markdown);
        "

    - name: Upload performance report
      uses: actions/upload-artifact@v4
      with:
        name: performance-report
        path: |
          performance-report.json
          performance-report.md
        retention-days: 90

    - name: Comment performance report on PR
      if: github.event_name == 'pull_request'
      uses: actions/github-script@v7
      with:
        script: |
          const fs = require('fs');
          if (fs.existsSync('performance-report.md')) {
            const report = fs.readFileSync('performance-report.md', 'utf8');

            github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: report
            });
          }