import { Injectable } from '@angular/core';
import { completionJSON } from 'fmode-ng/core/agent/chat/completion';

@Injectable({ providedIn: 'root' })
export class ProjectRetrospectiveAIService {
  constructor() {}

  async generate(options: {
    project: any; // FmodeObject (仅用于取标题/时间)
    data: any;    // collectProjectData() 的结果
    onProgress?: (msg: string) => void;
  }): Promise<any> {
    const { project, data } = options;

    const safe = {
      title: project?.get?.('title') || '',
      createdAt: project?.get?.('createdAt') || '',
      products: (data?.products || []).map((p: any) => ({ id: p.id, name: p.name, type: p.type })),
      payments: {
        totalAmount: data?.finalPayment?.totalAmount || 0,
        paidAmount: data?.finalPayment?.paidAmount || 0,
        remainingAmount: data?.finalPayment?.remainingAmount || 0,
        status: data?.finalPayment?.status || 'pending'
      },
      feedback: {
        overallRating: data?.customerFeedback?.overallRating || 0,
        dimensionRatings: data?.customerFeedback?.dimensionRatings || {}
      }
    };

    const prompt = `你是一名项目复盘分析专家。请基于下面的项目数据，输出结构化复盘JSON：\n\n` +
      JSON.stringify(safe, null, 2) +
      `\n\n请严格输出为 JSON，字段含义如下：
{
  "summary": string,                              // 100-200字项目摘要
  "highlights": string[],                        // 3-6条亮点
  "challenges": string[],                        // 3-6条挑战
  "recommendations": string[],                   // 3-6条可执行建议
  "efficiencyAnalysis": {
    "overallScore": number,                      // 0-100
    "grade": "A"|"B"|"C"|"D"|"F",
    "stageMetrics": [
      { "stage": string, "plannedDays": number, "actualDays": number, "efficiency": number, "status": "on-time"|"delayed"|"ahead" }
    ]
  },
  "financialAnalysis": { "revenueAnalysis": { "contracted": number, "received": number, "pending": number }, "profitMargin": number, "budgetVariance": number },
  "satisfactionAnalysis": { "overallScore": number, "nps": number },
  "risksAndOpportunities": { "risks": [{"type":"timeline"|"budget"|"quality"|"resource"|"scope","description":string,"severity":"high"|"medium"|"low"}], "opportunities": [{"area":string, "description":string, "priority":"high"|"medium"|"low"}] }
}`;

    const outputSchema = `{
  "summary": "",
  "highlights": [""],
  "challenges": [""],
  "recommendations": [""],
  "efficiencyAnalysis": { "overallScore": 80, "grade": "B", "stageMetrics": [{"stage":"交付执行","plannedDays":10,"actualDays":11,"efficiency":91,"status":"delayed"}] },
  "financialAnalysis": { "revenueAnalysis": { "contracted": 0, "received": 0, "pending": 0 }, "profitMargin": 20, "budgetVariance": 0 },
  "satisfactionAnalysis": { "overallScore": 80, "nps": 20 },
  "risksAndOpportunities": { "risks": [{"type":"timeline","description":"进度波动","severity":"medium"}], "opportunities": [{"area":"复购","description":"客户满意度较高","priority":"high"}] }
}`;

    options.onProgress?.('AI 正在生成复盘...');
    const result = await completionJSON(
      prompt,
      outputSchema,
      () => options.onProgress?.('分析中...'),
      2,
      { model: 'doubao-1.6', vision: false }
    );
    return result || {};
  }
}