package service

import (
	"encoding/json"
	"errors"
	"github.com/caixw/lib.go/conv"
	"github.com/sirupsen/logrus"
	"reflect"
	"time"
	"youngee_b_api/app/dao"
	"youngee_b_api/app/entity"
	"youngee_b_api/app/util"
	"youngee_b_api/app/vo"
)

type SelectionInfoService struct{}

//func (s *SelectionInfoService) GetSelectionInfo(ctx *gin.Context, selectionId string) (*http_model.SelectionDetail, error) {
//	selectionDetail := http_model.SelectionDetail{}
//	selectionInfo, err := db.GetSelectionById(ctx, selectionId)
//
//	if err != nil {
//		logrus.WithContext(ctx).Errorf("[selectionDB service] call GetSelectionInfo error,err:%+v", err)
//		return nil, err
//	}
//	selectionBriefInfo, err := db.GetSelectionBriefInfo(ctx, selectionId)
//	if err != nil {
//		logrus.WithContext(ctx).Errorf("[selectionDB service] call GetSelectionBriefInfo error,err:%+v", err)
//		return nil, err
//	}
//	selectionExampleInfo, err := db.GetSelectionExampleInfo(ctx, selectionId)
//	if err != nil {
//		logrus.WithContext(ctx).Errorf("[selectionDB service] call GetSelectionExampleInfo error,err:%+v", err)
//		return nil, err
//	}
//	productInfo, err := db.GetProductInfoBySelectionId(ctx, selectionId)
//	if err != nil {
//		logrus.WithContext(ctx).Errorf("[selectionDB service] call GetProductInfo error,err:%+v", err)
//		return nil, err
//	}
//	productPhotoInfo, err := db.GetProductPhotoInfoBySelectionId(ctx, selectionId)
//	if err != nil {
//		logrus.WithContext(ctx).Errorf("[selectionDB service] call GetProductPhotoInfo error,err:%+v", err)
//		return nil, err
//	}
//	selectionDetail.SelectionBrief = selectionBriefInfo
//	selectionDetail.SelectionInfo = selectionInfo
//	selectionDetail.SelectionExample = selectionExampleInfo
//	selectionDetail.ProductInfo = productInfo
//	selectionDetail.ProductPhotoInfo = productPhotoInfo
//	return &selectionDetail, nil
//}

// 创建带货任务
func (s SelectionInfoService) CreateSelectionInfo(selection *vo.SelectionInfoCreateParam) (*string, error) {
	// a) 生成选品id
	selectionId := util.GetSelectionID()
	// b) 查找关联商品信息
	product, err := dao.ProductDAO{}.GetProductByID(conv.MustInt64(selection.ProductId, 0))
	if err != nil {
		return nil, err
	}
	if product == nil {
		return nil, errors.New("未找到关联商品")
	}
	productPhotos, err := dao.ProductPhotoDAO{}.GetProductPhotoByProductID(selection.ProductId)
	productInfoToJson, _ := json.Marshal(product)
	productPhotosToJson, _ := json.Marshal(productPhotos)
	// c) 选品名称
	selectionName := product.BrandName + "-" + product.ProductName
	// d)创建选品
	t := time.Now()
	newSelection := entity.SelectionInfo{
		SelectionStatus:  1,
		SelectionID:      selectionId,
		SelectionName:    selectionName,
		ProductID:        selection.ProductId,
		EnterpriseID:     selection.EnterpriseId,
		Platform:         selection.Platform,
		ProductSnap:      string(productInfoToJson),
		ProductPhotoSnap: string(productPhotosToJson),
		CreatedAt:        t,
		UpdatedAt:        t,
		CommissionRate:   0,
		EstimatedCost:    0,
		TaskReward:       0,
		SettlementAmount: 0,
	}
	err = dao.SelectionInfoDAO{}.CreateSelectionInfo(newSelection)
	if err != nil {
		return nil, err
	}

	return &selectionId, nil
}

// 更新带货任务（样品奖励、补充信息）
func (s SelectionInfoService) UpdateSelectionInfo(selectionUpdateParam *vo.SelectionInfoUpdateParam) (*string, error) {
	// 1. 检查该企业id和商品id有无选品
	selectionID := selectionUpdateParam.SelectionID
	selectionInfo, err := dao.SelectionInfoDAO{}.GetSelectionInfoById(selectionID)
	if err != nil {
		return nil, err
	}
	if selectionInfo == nil {
		return nil, errors.New("选品不存在")
	}

	// 2. 数据准备
	// a) 查找关联商品信息
	product, err := dao.ProductDAO{}.GetProductByID(conv.MustInt64(selectionUpdateParam.ProductId, 0))
	if err != nil {
		return nil, err
	}
	productPhotos, err := dao.ProductPhotoDAO{}.GetProductPhotoByProductID(conv.MustInt64(selectionUpdateParam.ProductId, 0))
	productInfoToJson, _ := json.Marshal(product)
	productPhotosToJson, _ := json.Marshal(productPhotos)
	// b) 选品名称
	selectionName := product.BrandName + "-" + product.ProductName
	// d) 任务截止时间
	taskDdl := time.Time{} //赋零值
	taskDdl, _ = time.ParseInLocation("2006-01-02 15:04:05", selectionUpdateParam.TaskDdl, time.Local)
	// f) 更新选品状态
	if selectionUpdateParam.SelectionStatus != 2 && selectionUpdateParam.SelectionStatus != 7 {
		selectionUpdateParam.SelectionStatus = 1
	}
	t := time.Now()
	updateSelection := entity.SelectionInfo{
		SelectionID:      selectionUpdateParam.SelectionID,
		SelectionStatus:  selectionUpdateParam.SelectionStatus,
		SelectionName:    selectionName,
		EnterpriseID:     selectionUpdateParam.EnterpriseId,
		ProductID:        selectionUpdateParam.ProductId,
		ContentType:      selectionUpdateParam.ContentType,
		TaskMode:         selectionUpdateParam.TaskMode,
		Platform:         selectionUpdateParam.Platform,
		SampleMode:       selectionUpdateParam.SampleMode,
		ProductUrl:       selectionUpdateParam.ProductUrl,
		SampleNum:        selectionUpdateParam.SampleNum,
		RemainNum:        selectionUpdateParam.SampleNum,
		CommissionRate:   selectionUpdateParam.CommissionRate,
		TaskReward:       selectionUpdateParam.TaskReward,
		SettlementAmount: selectionUpdateParam.SettlementAmount,
		EstimatedCost:    selectionInfo.EstimatedCost,
		SampleCondition:  selectionUpdateParam.SampleCondition,
		RewardCondition:  selectionUpdateParam.RewardCondition,
		TaskDdl:          taskDdl,
		Detail:           selectionUpdateParam.Detail,
		ProductSnap:      string(productInfoToJson),
		ProductPhotoSnap: string(productPhotosToJson),
		CreatedAt:        selectionInfo.CreatedAt,
		UpdatedAt:        t,
	}
	if selectionUpdateParam.SelectionStatus == 2 {
		updateSelection.SubmitAt = t
	}
	if selectionUpdateParam.Status == 1 {
		updateSelection.Status = 1
	}
	// 合并传入参数和数据表中原记录，若传入参数字段值为空，则将字段赋值为原记录中值
	result := util.MergeStructValue(&updateSelection, selectionInfo)
	// 利用反射机制将interface类型转换为结构体类型
	v := reflect.ValueOf(&result).Elem()
	if v.Kind() == reflect.Struct {
		updateSelection = v.Interface().(entity.SelectionInfo)
		//fmt.Println(p)
	}
	// c) 计算预估成本（如果有）
	/*
		var estimatedCost float64
		if conv.MustInt(updateSelection.TaskMode, 0) == 1 {
			estimatedCost = conv.MustFloat64(updateSelection.TaskReward, 0) * conv.MustFloat64(updateSelection.SampleNum, 0)
		}
		estimatedCostToString, _ := conv.String(estimatedCost)
		updateSelection.EstimatedCost = estimatedCostToString
	*/
	// 3. 更新选品
	err = dao.SelectionInfoDAO{}.UpdateSelectionInfo(updateSelection)
	if err != nil {
		return nil, err
	}

	// 4. 更新选品brief和示例（带货任务补充信息）
	if selectionUpdateParam.SecBrief != nil {
		// 删除已有brief
		err = dao.SecBriefDao{}.DeleteSecBriefBySelectionId(selectionInfo.SelectionID)
		if err != nil {
			return nil, err
		}
		// 插入新的brief
		for _, v := range selectionUpdateParam.SecBrief {
			brief := entity.SecBrief{
				SelectionID: selectionInfo.SelectionID,
				FileUid:     v.PhotoUid,
				FileName:    v.Name,
				FileUrl:     v.PhotoUrl,
				CreatedAt:   time.Now(),
			}
			err = dao.SecBriefDao{}.CreateSecBrief(brief)
			if err != nil {
				return nil, err
			}
		}
	}

	if selectionUpdateParam.SecExample != nil {
		// 删除已有示例
		err = dao.SecExampleDao{}.DeleteSecExampleBySelectionId(selectionInfo.SelectionID)
		if err != nil {
			return nil, err
		}
		// 插入新的示例
		for _, v := range selectionUpdateParam.SecExample {
			secExample := entity.SecExample{
				SelectionID: selectionInfo.SelectionID,
				FileUid:     v.PhotoUid,
				FileName:    v.Name,
				FileUrl:     v.PhotoUrl,
				CreatedAt:   time.Now(),
			}
			err = dao.SecExampleDao{}.CreateSecExample(secExample)
			if err != nil {
				return nil, err
			}
		}
	}

	println("更新带货任务的免费领样策略")
	// 更新带货任务的免费领样策略
	if selectionUpdateParam.FreeStrategys != nil {
		// 1. 删除已有的免费领样策略
		err = dao.FreeStrategyDao{}.DeleteFreeStrategyBySelectionId(selectionUpdateParam.SelectionID)
		if err != nil {
			return nil, err
		}
		// 2. 接收并创建新的免费领样策略
		if selectionUpdateParam.SampleMode == 1 {
			var frees []entity.FreeStrategy
			for _, v := range selectionUpdateParam.FreeStrategys {
				free := entity.FreeStrategy{
					SelectionId:    selectionInfo.SelectionID,
					StrategyId:     v.StrategyId,
					FansNum:        v.FansNum,
					SaleNum:        v.SaleNum,
					StrategyStatus: 1,
					EnrollNum:      0,
					ChooseNum:      0,
				}
				frees = append(frees, free)
			}
			err = dao.FreeStrategyDao{}.CreateFreeStrategy(frees)
			if err != nil {
				return nil, err
			}
		}
	}

	println("更新带货任务的悬赏策略")
	// 更新带货任务的悬赏策略
	if selectionUpdateParam.RewardStrategys != nil {
		// 1. 删除已有的悬赏策略
		err = dao.RewardStrategyDao{}.DeleteRewardStrategyBySelectionId(selectionUpdateParam.SelectionID)
		if err != nil {
			return nil, err
		}
		if selectionUpdateParam.TaskMode == 1 {
			var rewards []entity.RewardStrategy
			for _, v := range selectionUpdateParam.RewardStrategys {
				reward := entity.RewardStrategy{
					SelectionId:    selectionInfo.SelectionID,
					Reward:         v.Reward,
					SaleActual:     v.SaleActual,
					PerReward:      v.PerReward,
					StrategyStatus: 1,
				}
				rewards = append(rewards, reward)
			}
			err = dao.RewardStrategyDao{}.CreateRewardStrategy(rewards)
			if err != nil {
				return nil, err
			}
		}
	}

	return &updateSelection.SelectionID, nil
}

// 电商带货任务预览
func (s SelectionInfoService) GetSelectionDetail(selectionId string, enterpriseId string) (*vo.ReSelectionDetail, error) {
	selectionDetail := vo.ReSelectionDetail{}
	selectionInfo, err := dao.SelectionInfoDAO{}.GetSelectionInfoById(selectionId)
	if err != nil {
		logrus.Errorf("[selectionDB service] call GetSelectionInfo error,err:%+v", err)
		return nil, err
	}
	selectionBriefInfos, err := dao.SecBriefDao{}.GetSelectionBriefInfo(selectionId)
	if err != nil {
		logrus.Errorf("[selectionDB service] call GetSelectionBriefInfo error,err:%+v", err)
		return nil, err
	}
	selectionExamples, err := dao.SecExampleDao{}.GetSelectionExampleInfo(selectionId)
	if err != nil {
		logrus.Errorf("[selectionDB service] call GetSelectionExampleInfo error,err:%+v", err)
		return nil, err
	}
	productInfo, err := dao.ProductDAO{}.GetProductBySelectionId(selectionId)
	if err != nil {
		logrus.Errorf("[selectionDB service] call GetProductInfo error,err:%+v", err)
		return nil, err
	}
	productPhotos, err := dao.ProductPhotoDAO{}.GetProductPhotosBySelectionId(selectionId)
	if err != nil {
		logrus.Errorf("[selectionDB service] call GetProductPhotoInfo error,err:%+v", err)
		return nil, err
	}
	// 查找免费领样策略
	freeStrategys, err := dao.FreeStrategyDao{}.GetFreeStrategyBySelectionId(selectionId)
	if err != nil {
		logrus.Errorf("[selectionDB service] call GetFreeStrategy error,err:%+v", err)
		return nil, err
	}
	// 查找悬赏策略
	rewardStrategys, err := dao.RewardStrategyDao{}.GetRewardStrategyBySelectionId(selectionId)
	if err != nil {
		logrus.Errorf("[selectionDB service] call GetRewardStrategy error,err:%+v", err)
		return nil, err
	}

	selectionDetail.SelectionBriefs = selectionBriefInfos
	selectionDetail.SelectionInfo = selectionInfo
	selectionDetail.SelectionExamples = selectionExamples
	selectionDetail.ProductInfo = productInfo
	selectionDetail.ProductPhotos = productPhotos
	selectionDetail.FreeStrategys = freeStrategys
	selectionDetail.RewardStrategys = rewardStrategys
	return &selectionDetail, nil
}