package logic

import (
	"errors"
	"fmt"
	"log"

	"git.apinb.com/bsm-sdk/core/utils"
	"git.apinb.com/quant/collector/internal/impl"
	"git.apinb.com/quant/collector/internal/models"
	"git.apinb.com/quant/collector/internal/types"
	"gorm.io/gorm"
)

// CheckAndRepairOrderBooks 检查并补全订单簿数据
func CheckAndRepairOrderBooks(accountID string) error {
	log.Println("开始检查订单簿数据完整性...")
	err := checkAccountOrderBooks(accountID)
	if err != nil {
		return fmt.Errorf("检查账户 %s 的订单簿失败: %w", accountID, err)
	}
	return nil
}

// checkAccountOrderBooks 检查单个账户的订单簿数据
func checkAccountOrderBooks(accountID string) error {

	// 获取该账户最新的持仓日期
	var latestYmd int
	err := impl.DBService.Model(&models.CollectorPosition{}).
		Where("account_id = ?", accountID).
		Select("MAX(ymd)").
		Scan(&latestYmd).Error

	if err != nil {
		return fmt.Errorf("查询最新持仓日期失败: %w", err)
	}

	if latestYmd == 0 {
		log.Printf("账户 %s 没有持仓记录", accountID)
		return nil
	}

	log.Printf("账户 %s 最新持仓日期: %d", accountID, latestYmd)

	// 获取该账户最新日期的持仓列表
	var latestPositions []models.CollectorPosition
	err = impl.DBService.Where("account_id = ? AND ymd = ?", accountID, latestYmd).
		Find(&latestPositions).Error

	if err != nil {
		return fmt.Errorf("查询持仓失败: %w", err)
	}

	log.Printf("账户 %s 有 %d 个持仓股票需要检查", accountID, len(latestPositions))

	// 1. 检查股票持仓列表是否有未闭合的订单簿记录
	for _, position := range latestPositions {
		// 跳过无持仓的股票
		if position.Volume <= 0 {
			continue
		}

		var existingOrderBooks models.OrderBook
		err := impl.DBService.Where("account_id = ? AND stock_code = ? AND is_closed = ?", accountID, position.Code, false).First(&existingOrderBooks).Error
		if errors.Is(err, gorm.ErrRecordNotFound) {
			// 没有找到未闭合的订单簿记录,写入新的记录
			newOrderBook := models.OrderBook{
				AccountID: accountID,
				StockCode: position.Code,
				Ymd:       latestYmd,
				BuyPrice:  position.AvgPrice,
				BuyVolume: position.Volume,
				IsClosed:  false,
			}
			if err := impl.DBService.Create(&newOrderBook).Error; err != nil {
				log.Printf("创建订单簿记录失败: %v", err)
				continue
			}
			log.Printf("新建买入订单簿: account=%s, stock=%s, volume=%d", accountID, position.Code, position.Volume)
		}

	}

	// 2. 检查所有未闭合的订单簿记录开仓成本价格与CollectorOrders对比，是否正确，不正确采用CollectorOrders中的价格更新
	var orderBooks []models.OrderBook
	err = impl.DBService.Where("account_id = ? AND is_closed = ?", accountID, false).Find(&orderBooks).Error
	if err != nil {
		return fmt.Errorf("查询未闭合的订单簿记录失败: %w", err)
	}
	for _, orderBook := range orderBooks {
		newAvgPrice, err := GetOrderAvgPrice(orderBook.StockCode, accountID, orderBook.BuyVolume)
		if err != nil {
			log.Printf("获取订单簿 %s 的开仓成本价格失败: %v", orderBook.StockCode, err)
			continue
		}
		if newAvgPrice > orderBook.BuyPrice {
			log.Printf("订单簿 %s 的开仓成本价格不一致, 更新前: %v, 更新后: %v", orderBook.StockCode, orderBook.BuyPrice, newAvgPrice)
			orderBook.BuyPrice = newAvgPrice
			if err := impl.DBService.Save(&orderBook).Error; err != nil {
				log.Printf("更新订单簿 %s 的开仓成本价格失败: %v", orderBook.StockCode, err)
			}
		}
	}

	return nil
}
func GetOrderAvgPrice(code, account_id string, amount int) (float64, error) {
	if amount <= 0 {
		return 0, fmt.Errorf("数量必须大于0")
	}
	var orders []models.CollectorOrder
	impl.DBService.Model(&models.CollectorOrder{}).
		Where("stock_code = ? AND account_id = ? AND offset_flag = ?", code, account_id, types.FLAG_BUY).
		Order("id desc").
		Find(&orders)

	var stepIdx = 0
	var currentAmount int
	for idx, order := range orders {
		currentAmount += order.TradedVolume
		if currentAmount == amount {
			stepIdx = idx
			break
		}
	}
	var avgPrice float64
	newOrders := orders[0 : stepIdx+1]
	for _, order := range newOrders {
		avgPrice += order.TradedPrice
	}
	avgPrice = utils.FloatRound(avgPrice/float64(len(newOrders)), 2)

	return avgPrice, nil
}