/**
 * Researcher Agent - Specialized in information gathering and research
 */

import { BaseAgent } from './base-agent.js';
import type { AgentCapabilities, AgentConfig, AgentEnvironment, TaskDefinition } from '../../swarm/types.js';
import type { ILogger } from '../../core/logger.js';
import type { IEventBus } from '../../core/event-bus.js';
import type { DistributedMemorySystem } from '../../memory/distributed-memory.js';

export class ResearcherAgent extends BaseAgent {
  constructor(
    id: string,
    config: AgentConfig,
    environment: AgentEnvironment,
    logger: ILogger,
    eventBus: IEventBus,
    memory: DistributedMemorySystem
  ) {
    super(id, 'researcher', config, environment, logger, eventBus, memory);
  }

  protected getDefaultCapabilities(): AgentCapabilities {
    return {
      codeGeneration: false,
      codeReview: false,
      testing: false,
      documentation: true,
      research: true,
      analysis: true,
      webSearch: true,
      apiIntegration: true,
      fileSystem: true,
      terminalAccess: false,
      languages: [],
      frameworks: [],
      domains: [
        'research',
        'information-gathering',
        'data-collection',
        'market-analysis',
        'competitive-intelligence',
        'academic-research',
        'fact-checking',
        'trend-analysis',
        'literature-review'
      ],
      tools: [
        'web-search',
        'document-analyzer',
        'data-extractor',
        'citation-generator',
        'summary-generator',
        'trend-tracker',
        'fact-checker',
        'source-validator',
        'research-planner'
      ],
      maxConcurrentTasks: 5,
      maxMemoryUsage: 512 * 1024 * 1024, // 512MB
      maxExecutionTime: 900000, // 15 minutes
      reliability: 0.92,
      speed: 0.85,
      quality: 0.95
    };
  }

  protected getDefaultConfig(): Partial<AgentConfig> {
    return {
      autonomyLevel: 0.8,
      learningEnabled: true,
      adaptationEnabled: true,
      maxTasksPerHour: 20,
      maxConcurrentTasks: 5,
      timeoutThreshold: 900000,
      reportingInterval: 30000,
      heartbeatInterval: 10000,
      permissions: [
        'web-access',
        'file-read',
        'api-access',
        'search-engines',
        'database-read'
      ],
      trustedAgents: [],
      expertise: {
        research: 0.95,
        analysis: 0.90,
        documentation: 0.85,
        'data-collection': 0.92,
        'fact-checking': 0.88
      },
      preferences: {
        verbose: true,
        detailed: true,
        citeSources: true,
        validateFacts: true,
        crossReference: true
      }
    };
  }

  override async executeTask(task: TaskDefinition): Promise<any> {
    this.logger.info('Researcher executing task', {
      agentId: this.id,
      taskType: task.type,
      taskId: task.id
    });

    try {
      switch (task.type) {
        case 'research':
          return await this.performResearch(task);
        case 'analysis':
          return await this.analyzeData(task);
        case 'fact-check':
          return await this.verifyFacts(task);
        case 'literature-review':
          return await this.conductLiteratureReview(task);
        case 'market-analysis':
          return await this.analyzeMarket(task);
        default:
          return await this.performGeneralResearch(task);
      }
    } catch (error) {
      this.logger.error('Research task failed', {
        agentId: this.id,
        taskId: task.id,
        error: error instanceof Error ? error.message : String(error)
      });
      throw error;
    }
  }

  private async performResearch(task: TaskDefinition): Promise<any> {
    const query = task.parameters?.query || task.description;
    const sources = task.parameters?.sources || ['web', 'academic', 'news'];
    const depth = task.parameters?.depth || 'moderate';

    this.logger.info('Starting research task', {
      query,
      sources,
      depth
    });

    const results = {
      query,
      sources: [] as any[],
      summary: '',
      findings: [] as string[],
      recommendations: [] as string[],
      confidence: 0,
      metadata: {
        searchTime: new Date(),
        totalSources: 0,
        sourcesAnalyzed: 0,
        researchDepth: depth
      }
    };

    // Store research progress
    await this.memory.store(`research:${task.id}:progress`, {
      status: 'in-progress',
      startTime: new Date(),
      query
    }, {
      type: 'research-progress',
      tags: ['research', this.id],
      partition: 'tasks'
    });

    // Simulate research process
    await this.delay(2000);
    
    results.summary = `Research findings for: ${query}`;
    results.findings = [
      'Key insight 1 based on research',
      'Important trend identified',
      'Relevant data points discovered'
    ];
    results.recommendations = [
      'Recommendation based on findings',
      'Suggested next steps'
    ];
    results.confidence = 0.85;
    results.metadata.totalSources = 15;
    results.metadata.sourcesAnalyzed = 12;

    // Store final results
    await this.memory.store(`research:${task.id}:results`, results, {
      type: 'research-results',
      tags: ['research', 'completed', this.id],
      partition: 'tasks'
    });

    return results;
  }

  private async analyzeData(task: TaskDefinition): Promise<any> {
    const data = task.input?.data;
    const analysisType = task.input?.type || 'general';

    this.logger.info('Analyzing data', {
      analysisType,
      dataSize: data ? Object.keys(data).length : 0
    });

    const analysis = {
      type: analysisType,
      insights: [] as string[],
      patterns: [] as any[],
      anomalies: [] as any[],
      confidence: 0,
      methodology: analysisType,
      timestamp: new Date()
    };

    // Simulate analysis
    await this.delay(1500);

    analysis.insights = [
      'Pattern A shows significant correlation',
      'Trend B indicates growth potential',
      'Factor C requires attention'
    ];
    analysis.confidence = 0.82;

    return analysis;
  }

  private async verifyFacts(task: TaskDefinition): Promise<any> {
    const claims = task.input?.claims || [];
    const sources = task.input?.sources || ['reliable', 'academic'];

    this.logger.info('Fact-checking claims', {
      claimsCount: claims.length,
      sources
    });

    const verification = {
      claims: [] as any[],
      overallAccuracy: 0,
      sourcesChecked: [] as string[],
      methodology: 'cross-reference',
      timestamp: new Date()
    };

    // Simulate fact-checking
    await this.delay(3000);

    verification.overallAccuracy = 0.88;
    verification.sourcesChecked = ['Source A', 'Source B', 'Source C'];

    return verification;
  }

  private async conductLiteratureReview(task: TaskDefinition): Promise<any> {
    const topic = task.input?.topic || task.description;
    const timeframe = task.input?.timeframe || '5-years';
    const scope = task.input?.scope || 'broad';

    this.logger.info('Conducting literature review', {
      topic,
      timeframe,
      scope
    });

    const review = {
      topic,
      timeframe,
      scope,
      papers: [] as any[],
      keyFindings: [] as string[],
      gaps: [] as any[],
      recommendations: [] as any[],
      confidence: 0,
      methodology: 'systematic-review',
      timestamp: new Date()
    };

    // Simulate literature review
    await this.delay(4000);

    review.keyFindings = [
      'Consistent finding across multiple studies',
      'Emerging trend in recent publications',
      'Contradictory results require further investigation'
    ];
    review.confidence = 0.90;

    return review;
  }

  private async analyzeMarket(task: TaskDefinition): Promise<any> {
    const market = task.input?.market || 'general';
    const metrics = task.input?.metrics || ['size', 'growth', 'competition'];

    this.logger.info('Analyzing market', {
      market,
      metrics
    });

    const analysis = {
      market,
      metrics: {},
      trends: [] as string[],
      opportunities: [] as any[],
      threats: [] as any[],
      confidence: 0,
      timestamp: new Date()
    };

    // Simulate market analysis
    await this.delay(2500);

    analysis.trends = [
      'Growing demand in segment X',
      'Declining interest in feature Y',
      'Emerging technology Z shows promise'
    ];
    analysis.confidence = 0.83;

    return analysis;
  }

  private async performGeneralResearch(task: TaskDefinition): Promise<any> {
    this.logger.info('Performing general research', {
      description: task.description
    });

    // Default research approach
    return await this.performResearch(task);
  }

  private async delay(ms: number): Promise<void> {
    return new Promise(resolve => setTimeout(resolve, ms));
  }

  override getAgentStatus(): any {
    return {
      ...super.getAgentStatus(),
      specialization: 'Research & Information Gathering',
      researchCapabilities: [
        'Web Research',
        'Academic Literature Review',
        'Market Analysis',
        'Fact Checking',
        'Data Collection',
        'Trend Analysis'
      ],
      currentResearchProjects: this.getCurrentTasks().length,
      averageResearchTime: '8-15 minutes',
      preferredSources: ['Academic', 'Government', 'Industry Reports', 'News'],
      lastResearchCompleted: this.getLastTaskCompletedTime()
    };
  }
}

export const createResearcherAgent = (
  id: string,
  config: Partial<AgentConfig>,
  environment: Partial<AgentEnvironment>,
  logger: ILogger,
  eventBus: IEventBus,
  memory: DistributedMemorySystem
): ResearcherAgent => {
  const defaultConfig = {
    autonomyLevel: 0.8,
    learningEnabled: true,
    adaptationEnabled: true,
    maxTasksPerHour: 10,
    maxConcurrentTasks: 3,
    timeoutThreshold: 600000,
    reportingInterval: 120000,
    heartbeatInterval: 60000,
    permissions: [
      'web-search',
      'data-access',
      'file-read',
      'api-access',
      'research-tools'
    ],
    trustedAgents: [],
    expertise: {
      'information-gathering': 0.95,
      'fact-checking': 0.92,
      'data-analysis': 0.88,
      'literature-review': 0.90,
      'market-research': 0.85
    },
    preferences: {
      searchDepth: 'comprehensive',
      sourceVerification: 'rigorous',
      reportingDetail: 'detailed',
      timeInvestment: 'thorough'
    }
  };
  const defaultEnv = {
    runtime: 'deno' as const,
    version: '1.40.0',
    workingDirectory: './agents/researcher',
    tempDirectory: './tmp/researcher',
    logDirectory: './logs/researcher',
    apiEndpoints: {},
    credentials: {},
    availableTools: [
      'web-search',
      'document-reader',
      'data-extractor',
      'citation-generator'
    ],
    toolConfigs: {}
  };

  return new ResearcherAgent(
    id,
    { ...defaultConfig, ...config } as AgentConfig,
    { ...defaultEnv, ...environment } as AgentEnvironment,
    logger,
    eventBus,
    memory
  );
};