/**
 * Agentic QE v3 - Domain MCP Tools Tests
 * Tests for all 14 domain-specific MCP tools per ADR-010
 */

import { describe, it, expect, beforeEach } from 'vitest';
import {
  TestGenerateTool,
  TestExecuteTool,
  CoverageAnalyzeTool,
  CoverageGapsTool,
  QualityEvaluateTool,
  DefectPredictTool,
  RequirementsValidateTool,
  CodeAnalyzeTool,
  SecurityScanTool,
  ContractValidateTool,
  VisualCompareTool,
  A11yAuditTool,
  ChaosInjectTool,
  LearningOptimizeTool,
} from '../../../../src/mcp/tools';

// ============================================================================
// Test Generation Tool
// ============================================================================

describe('TestGenerateTool', () => {
  let tool: TestGenerateTool;

  beforeEach(() => {
    tool = new TestGenerateTool();
  });

  it('should have correct name', () => {
    expect(tool.name).toBe('qe/tests/generate');
  });

  it('should belong to test-generation domain', () => {
    expect(tool.domain).toBe('test-generation');
  });

  it('should have required parameters', () => {
    const schema = tool.getSchema();
    expect(schema.required).toContain('sourceFiles');
  });

  it('should generate tests for source files', async () => {
    const result = await tool.invoke({
      sourceFiles: ['src/service.ts'],
      testType: 'unit',
      framework: 'vitest',
    });

    expect(result.success).toBe(true);
    expect(result.data?.tests).toBeDefined();
    expect(result.data?.tests.length).toBeGreaterThan(0);
  });

  it('should support streaming', () => {
    expect(tool.supportsStreaming).toBe(true);
  });
});

// ============================================================================
// Test Execution Tool
// ============================================================================

describe('TestExecuteTool', () => {
  let tool: TestExecuteTool;

  beforeEach(() => {
    tool = new TestExecuteTool();
  });

  it('should have correct name', () => {
    expect(tool.name).toBe('qe/tests/execute');
  });

  it('should belong to test-execution domain', () => {
    expect(tool.domain).toBe('test-execution');
  });

  it('should execute tests', async () => {
    const result = await tool.invoke({
      pattern: '**/*.test.ts',
    });

    // Tool may report success=false if tests fail, but should return data
    expect(result.data?.summary).toBeDefined();
    expect(result.data?.summary.total).toBeGreaterThanOrEqual(0);
  });

  it('should support parallel execution', async () => {
    const result = await tool.invoke({
      testFiles: ['test1.test.ts'],
      parallel: true,
      parallelism: 4,
    });

    // Tool returns data even if some tests fail
    expect(result.data?.summary).toBeDefined();
  });

  it('should return flaky tests when detected', async () => {
    const result = await tool.invoke({
      testFiles: ['test1.test.ts', 'test2.test.ts', 'test3.test.ts'],
      retryCount: 3,
    });

    // flakyTests is only present when flaky tests are detected
    // Since detection is probabilistic in the mock, just verify data is returned
    expect(result.data?.summary).toBeDefined();
  });
});

// ============================================================================
// Coverage Analysis Tool
// ============================================================================

describe('CoverageAnalyzeTool', () => {
  let tool: CoverageAnalyzeTool;

  beforeEach(() => {
    tool = new CoverageAnalyzeTool();
  });

  it('should have correct name', () => {
    expect(tool.name).toBe('qe/coverage/analyze');
  });

  it('should belong to coverage-analysis domain', () => {
    expect(tool.domain).toBe('coverage-analysis');
  });

  it('should analyze coverage (with demo mode for unit test)', async () => {
    // Use demoMode to test output format without requiring real coverage data
    const result = await tool.invoke({
      target: 'src/',
      dryRun: true, // explicit demo mode
    });

    expect(result.success).toBe(true);
    expect(result.data?.summary).toBeDefined();
    expect(result.data?.summary.lines).toBeDefined();
  });

  it('should return error when no coverage data found', async () => {
    // Without demo mode, should return error when no real coverage data
    const result = await tool.invoke({
      target: 'nonexistent-path/',
    });

    expect(result.success).toBe(false);
    expect(result.error).toContain('No coverage data found');
  });

  it('should include risk scoring (with demo mode)', async () => {
    const result = await tool.invoke({
      target: 'src/',
      includeRiskScoring: true,
      dryRun: true, // explicit demo mode
    });

    expect(result.success).toBe(true);
  });
});

// ============================================================================
// Coverage Gaps Tool
// ============================================================================

describe('CoverageGapsTool', () => {
  let tool: CoverageGapsTool;

  beforeEach(() => {
    tool = new CoverageGapsTool();
  });

  it('should have correct name', () => {
    expect(tool.name).toBe('qe/coverage/gaps');
  });

  it('should detect coverage gaps (with demo mode)', async () => {
    // Use demoMode to test output format without requiring real coverage data
    const result = await tool.invoke({
      target: 'src/',
      maxLineCoverage: 60,
    }, { demoMode: true });

    expect(result.success).toBe(true);
    expect(result.data?.gaps).toBeDefined();
    expect(Array.isArray(result.data?.gaps)).toBe(true);
  });

  it('should return error when no coverage data found', async () => {
    // Without demo mode, should return error when no real coverage data
    const result = await tool.invoke({
      target: 'nonexistent-path/',
    });

    expect(result.success).toBe(false);
    expect(result.error).toContain('No coverage data found');
  });

  it('should filter by risk score (with demo mode)', async () => {
    const result = await tool.invoke({
      target: 'src/',
      minRiskScore: 0.7,
    }, { demoMode: true });

    expect(result.success).toBe(true);
  });

  it('should suggest tests for gaps (with demo mode)', async () => {
    const result = await tool.invoke({
      target: 'src/',
      suggestTests: true,
    }, { demoMode: true });

    expect(result.success).toBe(true);
  });
});

// ============================================================================
// Quality Evaluate Tool
// ============================================================================

describe('QualityEvaluateTool', () => {
  let tool: QualityEvaluateTool;

  beforeEach(() => {
    tool = new QualityEvaluateTool();
  });

  it('should have correct name', () => {
    expect(tool.name).toBe('qe/quality/evaluate');
  });

  it('should belong to quality-assessment domain', () => {
    expect(tool.domain).toBe('quality-assessment');
  });

  it('should evaluate quality gates', async () => {
    const result = await tool.invoke({
      gateName: 'default',
    });

    expect(result.success).toBe(true);
    expect(result.data?.passed).toBeDefined();
    expect(result.data?.checks).toBeDefined();
  });

  it('should include deployment advice', async () => {
    const result = await tool.invoke({
      gateName: 'production',
      includeDeploymentAdvice: true,
    });

    expect(result.success).toBe(true);
    expect(result.data?.deploymentAdvice).toBeDefined();
  });
});

// ============================================================================
// Defect Predict Tool
// ============================================================================

describe('DefectPredictTool', () => {
  let tool: DefectPredictTool;

  beforeEach(() => {
    tool = new DefectPredictTool();
  });

  it('should have correct name', () => {
    expect(tool.name).toBe('qe/defects/predict');
  });

  it('should belong to defect-intelligence domain', () => {
    expect(tool.domain).toBe('defect-intelligence');
  });

  it('should predict defects (with demo mode)', async () => {
    // Use demoMode to test output format without requiring real prediction service
    const result = await tool.invoke({
      target: 'src/',
    }, { demoMode: true });

    expect(result.success).toBe(true);
    expect(result.data?.predictions).toBeDefined();
    expect(Array.isArray(result.data?.predictions)).toBe(true);
  });

  it('should return error when prediction service fails', async () => {
    // Without demo mode, service failure returns error (not fake data)
    const result = await tool.invoke({
      files: ['nonexistent-file.ts'],
    });

    // Should either succeed with real data or fail with error
    // Won't return fake data as fallback
    expect(result.metadata).toBeDefined();
  });

  it('should include risk factors (with demo mode)', async () => {
    const result = await tool.invoke({
      target: 'src/',
      includeFactors: true,
    }, { demoMode: true });

    expect(result.success).toBe(true);
  });
});

// ============================================================================
// Requirements Validate Tool
// ============================================================================

describe('RequirementsValidateTool', () => {
  let tool: RequirementsValidateTool;

  beforeEach(() => {
    tool = new RequirementsValidateTool();
  });

  it('should have correct name', () => {
    expect(tool.name).toBe('qe/requirements/validate');
  });

  it('should belong to requirements-validation domain', () => {
    expect(tool.domain).toBe('requirements-validation');
  });

  it('should validate requirements', async () => {
    const result = await tool.invoke({
      requirements: [
        {
          id: 'REQ-001',
          title: 'User Login',
          description: 'User should be able to log in with valid credentials and see the dashboard after authentication.',
          acceptanceCriteria: ['Login form displays', 'Valid credentials accepted'],
        },
      ],
    });

    expect(result.success).toBe(true);
    expect(result.data?.validationResults).toBeDefined();
  });

  it('should generate BDD scenarios', async () => {
    const result = await tool.invoke({
      requirements: [
        {
          id: 'REQ-001',
          title: 'User Login',
          description: 'User should be able to log in with valid credentials and see the dashboard after authentication.',
          acceptanceCriteria: ['Login form displays', 'Valid credentials accepted'],
        },
      ],
      generateBDD: true,
    });

    expect(result.success).toBe(true);
    expect(result.data?.bddScenarios).toBeDefined();
  });
});

// ============================================================================
// Code Analyze Tool
// ============================================================================

describe('CodeAnalyzeTool', () => {
  let tool: CodeAnalyzeTool;

  beforeEach(() => {
    tool = new CodeAnalyzeTool();
  });

  it('should have correct name', () => {
    expect(tool.name).toBe('qe/code/analyze');
  });

  it('should belong to code-intelligence domain', () => {
    expect(tool.domain).toBe('code-intelligence');
  });

  it('should support index action', async () => {
    const result = await tool.invoke({
      action: 'index',
      target: 'src/',
    });

    expect(result.success).toBe(true);
    expect(result.data?.indexResult).toBeDefined();
  }, 30000); // Extended timeout for file indexing

  it('should support search action (with demo mode)', async () => {
    // Use demoMode to test output format
    const result = await tool.invoke({
      action: 'search',
      query: 'UserService',
    }, { demoMode: true });

    expect(result.success).toBe(true);
    expect(result.data?.searchResult).toBeDefined();
  });

  it('should return empty results for search with no matches', async () => {
    // Without demo mode, no matches returns empty (not fake data)
    const result = await tool.invoke({
      action: 'search',
      query: 'NonexistentClass12345',
    });

    expect(result.success).toBe(true);
    expect(result.data?.searchResult?.results).toEqual([]);
  });

  it('should support impact action (with demo mode)', async () => {
    // Use demoMode to test output format
    const result = await tool.invoke({
      action: 'impact',
      changedFiles: ['src/service.ts'],
    }, { demoMode: true });

    expect(result.success).toBe(true);
    expect(result.data?.impactResult).toBeDefined();
  });

  it('should support dependencies action', async () => {
    const result = await tool.invoke({
      action: 'dependencies',
      target: 'src/service.ts',
    });

    expect(result.success).toBe(true);
    expect(result.data?.dependencyResult).toBeDefined();
  });
});

// ============================================================================
// Security Scan Tool
// ============================================================================

describe('SecurityScanTool', () => {
  let tool: SecurityScanTool;

  beforeEach(() => {
    tool = new SecurityScanTool();
  });

  it('should have correct name', () => {
    expect(tool.name).toBe('qe/security/scan');
  });

  it('should belong to security-compliance domain', () => {
    expect(tool.domain).toBe('security-compliance');
  });

  it('should run security scan', async () => {
    const result = await tool.invoke({
      target: 'src/',
    });

    expect(result.success).toBe(true);
    expect(result.data?.summary).toBeDefined();
    expect(result.data?.vulnerabilities).toBeDefined();
  });

  it('should support SAST scan', async () => {
    const result = await tool.invoke({
      target: 'src/',
      scanTypes: { sast: true },
    });

    expect(result.success).toBe(true);
  });

  it('should check compliance', async () => {
    const result = await tool.invoke({
      target: 'src/',
      compliance: ['owasp', 'gdpr'],
    });

    expect(result.success).toBe(true);
    expect(result.data?.complianceResults).toBeDefined();
  });
});

// ============================================================================
// Contract Validate Tool
// ============================================================================

describe('ContractValidateTool', () => {
  let tool: ContractValidateTool;

  beforeEach(() => {
    tool = new ContractValidateTool();
  });

  it('should have correct name', () => {
    expect(tool.name).toBe('qe/contracts/validate');
  });

  it('should belong to contract-testing domain', () => {
    expect(tool.domain).toBe('contract-testing');
  });

  it('should validate contract', async () => {
    const result = await tool.invoke({
      contractContent: '{"openapi": "3.0.0"}',
      format: 'openapi',
    });

    expect(result.success).toBe(true);
    expect(result.data?.isValid).toBeDefined();
    expect(result.data?.validationErrors).toBeDefined();
  });

  it('should detect breaking changes', async () => {
    const result = await tool.invoke({
      contractContent: '{}',
      baselineVersion: '1.0.0',
      checkBreakingChanges: true,
    });

    expect(result.success).toBe(true);
    expect(result.data?.breakingChanges).toBeDefined();
  });
});

// ============================================================================
// Visual Compare Tool
// ============================================================================

describe('VisualCompareTool', () => {
  let tool: VisualCompareTool;

  beforeEach(() => {
    tool = new VisualCompareTool();
  });

  it('should have correct name', () => {
    expect(tool.name).toBe('qe/visual/compare');
  });

  it('should belong to visual-accessibility domain', () => {
    expect(tool.domain).toBe('visual-accessibility');
  });

  it('should compare visual snapshots', async () => {
    const result = await tool.invoke({
      urls: ['https://example.com'],
    });

    expect(result.success).toBe(true);
    expect(result.data?.comparisons).toBeDefined();
    expect(result.data?.summary).toBeDefined();
  });

  it('should apply threshold', async () => {
    const result = await tool.invoke({
      urls: ['https://example.com'],
      threshold: 0.05,
    });

    expect(result.success).toBe(true);
  });
});

// ============================================================================
// A11y Audit Tool
// ============================================================================

describe('A11yAuditTool', () => {
  let tool: A11yAuditTool;

  beforeEach(() => {
    tool = new A11yAuditTool();
  });

  it('should have correct name', () => {
    expect(tool.name).toBe('qe/a11y/audit');
  });

  it('should belong to visual-accessibility domain', () => {
    expect(tool.domain).toBe('visual-accessibility');
  });

  it('should audit accessibility', async () => {
    const result = await tool.invoke({
      urls: ['https://example.com'],
    });

    expect(result.success).toBe(true);
    expect(result.data?.audits).toBeDefined();
    expect(result.data?.summary).toBeDefined();
  });

  it('should support WCAG standard selection', async () => {
    const result = await tool.invoke({
      urls: ['https://example.com'],
      standard: 'wcag21-aa',
    });

    expect(result.success).toBe(true);
  });
});

// ============================================================================
// Chaos Inject Tool
// ============================================================================

describe('ChaosInjectTool', () => {
  let tool: ChaosInjectTool;

  beforeEach(() => {
    tool = new ChaosInjectTool();
  });

  it('should have correct name', () => {
    expect(tool.name).toBe('qe/chaos/inject');
  });

  it('should belong to chaos-resilience domain', () => {
    expect(tool.domain).toBe('chaos-resilience');
  });

  it('should have required parameters', () => {
    const schema = tool.getSchema();
    expect(schema.required).toContain('faultType');
    expect(schema.required).toContain('target');
  });

  it('should inject fault in dry run mode', async () => {
    const result = await tool.invoke({
      faultType: 'latency',
      target: 'api-service',
      dryRun: true,
    });

    expect(result.success).toBe(true);
    expect(result.data?.status).toBeDefined();
    expect(result.data?.faultInjected).toBe(false); // dry run
  });

  it('should validate hypothesis', async () => {
    const result = await tool.invoke({
      faultType: 'error',
      target: 'api-service',
      dryRun: true,
      hypothesis: 'System should recover within 30s',
    });

    expect(result.success).toBe(true);
    expect(result.data?.hypothesisValidated).toBeDefined();
  });
});

// ============================================================================
// Learning Optimize Tool
// ============================================================================

describe('LearningOptimizeTool', () => {
  let tool: LearningOptimizeTool;

  beforeEach(() => {
    tool = new LearningOptimizeTool();
  });

  it('should have correct name', () => {
    expect(tool.name).toBe('qe/learning/optimize');
  });

  it('should belong to learning-optimization domain', () => {
    expect(tool.domain).toBe('learning-optimization');
  });

  it('should have required parameters', () => {
    const schema = tool.getSchema();
    expect(schema.required).toContain('action');
  });

  it('should support learn action (with demo mode)', async () => {
    // Use demoMode to test output format with demo data
    const result = await tool.invoke({
      action: 'learn',
      domain: 'test-generation',
    }, { demoMode: true });

    expect(result.success).toBe(true);
    expect(result.data?.learnResult).toBeDefined();
    expect(result.data?.learnResult?.patternsLearned).toBeGreaterThan(0);
  });

  it('should return empty patterns when no learning data', async () => {
    // Without demo mode, no learning data returns empty results (not fake data)
    const result = await tool.invoke({
      action: 'learn',
      domain: 'test-generation',
    });

    expect(result.success).toBe(true);
    expect(result.data?.learnResult).toBeDefined();
    // Returns empty patterns, not fake data
    expect(result.data?.learnResult?.patternsLearned).toBe(0);
  });

  it('should support optimize action', async () => {
    const result = await tool.invoke({
      action: 'optimize',
      objective: { metric: 'coverage', direction: 'maximize' },
    });

    expect(result.success).toBe(true);
    expect(result.data?.optimizeResult).toBeDefined();
  });

  it('should support transfer action', async () => {
    const result = await tool.invoke({
      action: 'transfer',
      domain: 'test-generation',
      targetDomain: 'coverage-analysis',
    });

    expect(result.success).toBe(true);
    expect(result.data?.transferResult).toBeDefined();
  });

  it('should support patterns action', async () => {
    const result = await tool.invoke({
      action: 'patterns',
    });

    expect(result.success).toBe(true);
    expect(result.data?.patternResult).toBeDefined();
  });

  it('should support dashboard action', async () => {
    const result = await tool.invoke({
      action: 'dashboard',
    });

    expect(result.success).toBe(true);
    expect(result.data?.dashboardResult).toBeDefined();
  });

  it('should reject unknown action', async () => {
    const result = await tool.invoke({
      action: 'unknown' as any,
    });

    expect(result.success).toBe(false);
    expect(result.error).toBeDefined();
    // Validation may catch it before execute
    expect(result.error).toMatch(/unknown|Validation/i);
  });
});