const PriceService = require('../services/priceService');
const { asyncHandler } = require('../middlewares/errorHandler');

/**
 * 价格控制器
 * 处理 HTTP 请求和响应
 */
class PriceController {
  /**
   * 按地区查询价格
   * GET /api/prices/region?region=昆明&date=2026-01-05&page=1&pageSize=20
   */
  static getByRegion = asyncHandler(async (req, res) => {
    const { region, date, page = 1, pageSize = 20 } = req.query;

    const result = await PriceService.getByRegion(region, date, page, pageSize);
    res.json(result);
  });

  /**
   * 搜索价格数据
   * GET /api/prices/search?material=螺纹钢&startDate=2026-01-01&endDate=2026-01-05
   */
  static search = asyncHandler(async (req, res) => {
    const filters = req.query;

    const result = await PriceService.search(filters);
    res.json(result);
  });

  /**
   * 获取价格统计
   * GET /api/prices/stats?region=昆明&material=螺纹钢&days=30
   */
  static getStats = asyncHandler(async (req, res) => {
    const filters = req.query;

    const result = await PriceService.getStats(filters);
    res.json(result);
  });

  /**
   * 获取价格趋势
   * GET /api/prices/trend?region=昆明&material=螺纹钢&days=30
   */
  static getTrend = asyncHandler(async (req, res) => {
    const filters = req.query;

    const result = await PriceService.getTrend(filters);
    res.json(result);
  });

  /**
   * 导入数据
   * POST /api/prices/import
   */
  static importData = asyncHandler(async (req, res) => {
    const { prices } = req.body;

    const result = await PriceService.importData(prices);
    res.json(result);
  });
}

module.exports = PriceController;