import { Controller, Get, Post, Body, Query } from '@nestjs/common';
import { AiAdvisorService, type ChatMessage } from './ai-advisor.service';

interface ChatRequestDto {
  tenantId: string;
  message: string;
  history?: ChatMessage[];
}

interface OptimizeProductDto {
  tenantId: string;
  productId: string;
}

@Controller('ai-advisor')
export class AiAdvisorController {
  constructor(private readonly aiAdvisorService: AiAdvisorService) {}

  @Post('chat')
  async chat(@Body() body: ChatRequestDto) {
    if (!body.tenantId) {
      throw new Error('tenantId is required');
    }
    const response = await this.aiAdvisorService.chat(
      body.tenantId,
      body.message,
      body.history || [],
    );
    return { response };
  }

  @Get('recommendations')
  async getRecommendations(@Query('tenantId') tenantId: string) {
    return this.aiAdvisorService.generateRecommendations(tenantId);
  }

  @Get('performance-scores')
  async getPerformanceScores(@Query('tenantId') tenantId: string) {
    return this.aiAdvisorService.calculatePerformanceScores(tenantId);
  }

  @Post('optimize-product')
  async optimizeProduct(@Body() body: OptimizeProductDto) {
    if (!body.tenantId) {
      throw new Error('tenantId is required');
    }
    return this.aiAdvisorService.optimizeProduct(body.tenantId, body.productId);
  }

  @Get('bulk-analyze')
  async bulkAnalyze(@Query('tenantId') tenantId: string) {
    return this.aiAdvisorService.bulkAnalyze(tenantId);
  }
}