export class CustomerAgent extends BaseAgent {
  private prd: ProductRequirementsDocument;
  private productVision: ProductVision;
  private validationHistory: ValidationHistory;
  private workingDir: string = './agents/customer-agent';
  
  constructor(config: CustomerAgentConfig) {
    super(config);
    this.type = AgentType.CUSTOMER;
    this.capabilities = [
      'requirement_validation',
      'acceptance_testing',
      'vision_maintenance',
      'user_story_generation'
    ];
  }
  
  async initialize(): Promise<void> {
    await super.initialize();
    await this.loadProductDocumentation();
    await this.initializeValidationEngine();
    await this.initializeClaudeCode();
    await this.startMCPServer(8081); // Agent as MCP server
  }
  
  async processTask(task: Task): Promise<TaskResult> {
    // Update Agent_Output.md with task start
    await this.updateAgentOutput({
      status: 'processing',
      currentTask: task.type,
      timestamp: new Date()
    });
    
    let result: TaskResult;
    switch (task.type) {
      case 'validate_feature':
        result = await this.validateFeature(task);
        break;
      case 'clarify_requirement':
        result = await this.clarifyRequirement(task);
        break;
      case 'generate_acceptance_criteria':
        result = await this.generateAcceptanceCriteria(task);
        break;
      case 'review_implementation':
        result = await this.reviewImplementation(task);
        break;
      default:
        throw new Error(`Unknown task type: ${task.type}`);
    }
    
    // Update Agent_Output.md with task completion
    await this.updateAgentOutput({
      status: 'idle',
      lastCompletedTask: task.type,
      lastResult: result.success ? 'success' : 'failed',
      timestamp: new Date()
    });
    
    return result;
  }
  
  private async updateAgentOutput(status: any): Promise<void> {
    const outputPath = path.join(this.workingDir, 'Agent_Output.md');
    const content = `# Customer Agent Status

**Last Updated**: ${status.timestamp}
**Status**: ${status.status}
**Current Task**: ${status.currentTask || 'None'}
**Last Completed**: ${status.lastCompletedTask || 'None'}
**Result**: ${status.lastResult || 'N/A'}

## Recent Activities
${this.formatRecentActivities()}
`;
    
    await fs.writeFile(outputPath, content);
  }
}

interface CustomerAgentState extends AgentState {
  currentValidations: Map<string, ValidationSession>;
  pendingClarifications: ClarificationRequest[];
  featureApprovals: Map<string, ApprovalStatus>;
  satisfactionMetrics: SatisfactionMetrics;
}

interface ValidationSession {
  id: string;
  featureId: string;
  startTime: Date;
  requirements: Requirement[];
  implementationDetails: Implementation;
  validationSteps: ValidationStep[];
  currentStep: number;
  decision?: ValidationDecision;
}

class RequirementValidator {
  async validateFeature(
    feature: Feature,
    requirements: Requirement[]
  ): Promise<ValidationResult> {
    const checks = await Promise.all([
      this.checkFunctionalRequirements(feature, requirements),
      this.checkNonFunctionalRequirements(feature, requirements),
      this.checkUserExperience(feature, requirements),
      this.checkBusinessConstraints(feature, requirements)
    ]);
    
    return {
      passed: checks.every(c => c.passed),
      score: this.calculateValidationScore(checks),
      feedback: this.generateFeedback(checks),
      suggestions: this.generateSuggestions(checks)
    };
  }
  
  private async checkFunctionalRequirements(
    feature: Feature,
    requirements: Requirement[]
  ): Promise<Check> {
    // Verify each functional requirement is met
    const functionalReqs = requirements.filter(r => r.type === 'functional');
    const results = await Promise.all(
      functionalReqs.map(req => this.verifyRequirement(feature, req))
    );
    
    return {
      category: 'functional',
      passed: results.every(r => r.met),
      details: results
    };
  }
}

class AcceptanceCriteriaGenerator {
  async generateCriteria(
    userStory: UserStory
  ): Promise<AcceptanceCriteria[]> {
    const criteria: AcceptanceCriteria[] = [];
    
    // Given-When-Then format
    const scenarios = await this.identifyScenarios(userStory);
    
    for (const scenario of scenarios) {
      criteria.push({
        id: generateId(),
        scenario: scenario.description,
        given: scenario.preconditions,
        when: scenario.actions,
        then: scenario.expectedResults,
        priority: scenario.priority,
        testable: true
      });
    }
    
    return criteria;
  }
}

class FeatureReviewer {
  async reviewImplementation(
    implementation: Implementation,
    requirements: Requirement[]
  ): Promise<ReviewResult> {
    const review = new ReviewSession();
    
    // Step 1: Functional review
    review.addStep(await this.functionalReview(implementation, requirements));
    
    // Step 2: User experience review
    review.addStep(await this.uxReview(implementation));
    
    // Step 3: Edge case handling
    review.addStep(await this.edgeCaseReview(implementation));
    
    // Step 4: Performance validation
    review.addStep(await this.performanceReview(implementation));
    
    // Generate comprehensive feedback
    return {
      decision: review.getDecision(),
      feedback: review.generateFeedback(),
      requiredChanges: review.getRequiredChanges(),
      suggestions: review.getSuggestions()
    };
  }
}

// Requirement clarification request
interface ClarificationRequest {
  type: 'CLARIFICATION_REQUEST';
  from: 'customer-agent';
  to: 'pm-agent';
  payload: {
    requirementId: string;
    ambiguity: string;
    suggestedClarification: string;
    context: RequirementContext;
  };
}

// Feature approval notification
interface ApprovalNotification {
  type: 'FEATURE_APPROVAL';
  from: 'customer-agent';
  to: 'pm-agent';
  payload: {
    featureId: string;
    approved: boolean;
    feedback: string;
    conditions?: string[];
  };
}

// Implementation feedback
interface ImplementationFeedback {
  type: 'IMPLEMENTATION_FEEDBACK';
  from: 'customer-agent';
  to: 'coder-agent';
  payload: {
    implementationId: string;
    issues: Issue[];
    suggestions: Suggestion[];
    exampleCode?: string;
  };
}

interface CustomerAgentMetrics {
  // Validation metrics
  validationAccuracy: number;         // % of correct validations
  averageValidationTime: number;      // ms
  validationThroughput: number;       // validations/hour
  
  // Quality metrics
  requirementCoverage: number;        // % requirements validated
  falsePositiveRate: number;          // % incorrect rejections
  falseNegativeRate: number;          // % incorrect approvals
  
  // Collaboration metrics
  clarificationResponseTime: number;  // ms
  feedbackQualityScore: number;       // 0-100
  agentSatisfactionScore: number;     // 0-100
}

class PerformanceOptimizer {
  async optimizeValidation(metrics: CustomerAgentMetrics): Promise<Optimization> {
    const optimizations = [];
    
    if (metrics.averageValidationTime > 30000) {
      optimizations.push({
        type: 'caching',
        target: 'requirement_loading',
        expectedImprovement: '40%'
      });
    }
    
    if (metrics.falsePositiveRate > 0.05) {
      optimizations.push({
        type: 'prompt_tuning',
        target: 'validation_criteria',
        expectedImprovement: '60%'
      });
    }
    
    return this.applyOptimizations(optimizations);
  }
}

enum CustomerAgentError {
  MISSING_REQUIREMENTS = 'MISSING_REQUIREMENTS',
  INVALID_IMPLEMENTATION = 'INVALID_IMPLEMENTATION',
  PRD_NOT_FOUND = 'PRD_NOT_FOUND',
  VALIDATION_TIMEOUT = 'VALIDATION_TIMEOUT',
  AMBIGUOUS_CRITERIA = 'AMBIGUOUS_CRITERIA'
}

class CustomerAgentErrorHandler {
  async handle(error: CustomerAgentError, context: ErrorContext): Promise<Resolution> {
    switch (error) {
      case CustomerAgentError.MISSING_REQUIREMENTS:
        return await this.requestRequirements(context);
        
      case CustomerAgentError.VALIDATION_TIMEOUT:
        return await this.extendValidationTime(context);
        
      case CustomerAgentError.AMBIGUOUS_CRITERIA:
        return await this.clarifyWithPM(context);
        
      default:
        return await this.escalateToHuman(error, context);
    }
  }
}

import { CustomerAgent } from '@autosdlc/agents';

const agent = new CustomerAgent({
  id: 'customer-001',
  mcpServerUrl: process.env.MCP_SERVER_URL,
  config: {
    validationMode: 'strict',
    feedbackDetail: 'high',
    memoryProvider: 'postgresql'
  }
});

await agent.initialize();
await agent.start();

// Agent is now ready to process tasks

// Listen for validation requests
agent.on('task:validate_feature', async (task) => {
  const result = await agent.validateFeature({
    implementation: task.payload.implementation,
    requirements: task.payload.requirements,
    acceptanceCriteria: task.payload.criteria
  });
  
  await agent.respond(task.id, result);
});