#!/usr/bin/env node
/**
 * 研究智能体
 * 
 * 职责:
 * - S0简报生成
 * - 内容竞品检索
 * - 资料收集
 * - 信息抽取
 */

import { AgentBase } from './agent-base.mjs';
import { spawn } from 'child_process';
import path from 'path';
import { fileURLToPath } from 'url';

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

export class ResearchAgent extends AgentBase {
  constructor(config = {}) {
    super({
      agentId: 'research-agent',
      agentName: 'Research-Agent',
      agentType: 'specialist',
      capabilities: [
        's0-brief-generation',
        'competitor-research',
        'data-collection',
        'information-extraction'
      ],
      ...config
    });
    
    this.bookRoot = null;
  }

  /**
   * 执行任务(覆盖基类方法)
   * @param {object} task - 任务对象
   * @returns {Promise<object>} - 任务结果
   */
  async executeTask(task) {
    const { state, payload } = task;
    
    if (state === 'S0') {
      return this._generateS0Brief(task);
    } else {
      throw new Error(`ResearchAgent does not support state: ${state}`);
    }
  }

  /**
   * 生成S0简报
   * @param {object} task - 任务对象
   * @returns {Promise<object>} - S0简报
   */
  async _generateS0Brief(task) {
    const { chapterId, payload } = task;
    const { bookRoot, topic, reader, genre } = payload;
    
    console.log(`[Research-Agent] Generating S0 brief for chapter: ${chapterId}`);
    console.log(`[Research-Agent] Topic: ${topic}, Reader: ${reader}, Genre: ${genre}`);
    
    this.bookRoot = bookRoot;
    
    // 调用 enforcement-search-policy 执行检索
    const searchResult = await this._executeSearch(bookRoot, chapterId, topic);
    
    // 生成S0简报
    const brief = {
      chapterId,
      topic,
      reader,
      genre,
      competitorAnalysis: searchResult.competitorAnalysis,
      readerAnalysis: searchResult.readerAnalysis,
      monetizationAnalysis: searchResult.monetizationAnalysis,
      generatedAt: new Date().toISOString(),
      status: 'completed'
    };
    
    // 发布简报生成完成事件
    this.publishEvent('s0.brief.generated', {
      chapterId,
      brief
    });
    
    return brief;
  }

  /**
   * 执行检索
   * @param {string} bookRoot - 书籍根目录
   * @param {string} chapterId - 章节ID
   * @param {string} topic - 主题
   * @returns {Promise<object>} - 检索结果
   */
  async _executeSearch(bookRoot, chapterId, topic) {
    console.log(`[Research-Agent] Executing search for: ${topic}`);
    
    return new Promise((resolve, reject) => {
      const scriptPath = path.join(__dirname, '..', 'integration', 'enforce-search-policy.mjs');
      const args = [
        '--book-root', bookRoot,
        '--chapter-id', chapterId
      ];
      
      const child = spawn(process.execPath, [scriptPath, ...args], {
        stdio: ['pipe', 'pipe', 'pipe']
      });
      
      let stdout = '';
      let stderr = '';
      
      child.stdout.on('data', (data) => {
        stdout += data.toString();
      });
      
      child.stderr.on('data', (data) => {
        stderr += data.toString();
      });
      
      child.on('close', (code) => {
        if (code === 0) {
          console.log(`[Research-Agent] Search completed for: ${topic}`);
          resolve({
            competitorAnalysis: {},
            readerAnalysis: {},
            monetizationAnalysis: {}
          });
        } else {
          console.error(`[Research-Agent] Search failed: ${stderr}`);
          reject(new Error(`Search failed with code ${code}: ${stderr}`));
        }
      });
      
      child.on('error', (error) => {
        console.error(`[Research-Agent] Search error: ${error.message}`);
        reject(error);
      });
    });
  }

  /**
   * 竞品分析
   * @param {string} topic - 主题
   * @returns {Promise<object>} - 竞品分析结果
   */
  async _analyzeCompetitors(topic) {
    console.log(`[Research-Agent] Analyzing competitors for: ${topic}`);
    
    // 模拟竞品分析
    return {
      competitors: [],
      insights: [],
      opportunities: []
    };
  }

  /**
   * 读者分析
   * @param {string} topic - 主题
   * @param {string} reader - 读者描述
   * @returns {Promise<object>} - 读者分析结果
   */
  async _analyzeReaders(topic, reader) {
    console.log(`[Research-Agent] Analyzing readers: ${reader}`);
    
    // 模拟读者分析
    return {
      readerProfile: reader,
      painPoints: [],
      needs: [],
      expectations: []
    };
  }

  /**
   * 变现分析
   * @param {string} topic - 主题
   * @returns {Promise<object>} - 变现分析结果
   */
  async _analyzeMonetization(topic) {
    console.log(`[Research-Agent] Analyzing monetization for: ${topic}`);
    
    // 模拟变现分析
    return {
      monetizationModels: [],
      targetMarkets: [],
      revenueStreams: []
    };
  }
}
