package service

import (
	"errors"

	"shop-api/global"
	"shop-api/model"
	"shop-api/model/request"
	"shop-api/utils"

	"gorm.io/gorm"
)

func ChangeCollectionMission(uuid string, info request.MissionId) (err error, id uint) {
	var (
		tmp               model.CollectionMission
		collectionMission model.CollectionMission
	)
	err = global.MG_DB.Model(&model.Mission{}).Where("id = ?", info.MissionId).First(&model.Mission{}).Error
	if err != nil {
		return
	}
	tx := global.MG_DB.Begin()
	err = tx.Model(&model.CollectionMission{}).Where("mission_id = ? AND create_by = ?", info.MissionId, uuid).Find(&tmp).Error
	if err != nil {
		return
	}
	if tmp.ID == 0 {
		collectionMission.MissionId = info.MissionId
		collectionMission.CreateBy = uuid
		err = tx.Model(&model.CollectionMission{}).Create(&collectionMission).Error
		if err != nil {
			tx.Rollback()
			err = errors.New("收藏失败")
			return
		}
		// 任务收藏数+1
		err = tx.Model(&model.Mission{}).Where("id = ?", info.MissionId).UpdateColumn("collection_num", gorm.Expr("collection_num + 1")).Error
		if err != nil {
			tx.Rollback()
			return
		}
	} else {
		err = tx.Model(&model.CollectionMission{}).Delete(&tmp).Error
		if err != nil {
			tx.Rollback()
			err = errors.New("取消收藏失败")
			return
		}
		// 任务收藏数-1
		err = tx.Model(&model.Mission{}).Where("id = ? AND collection_num > 0", info.MissionId).UpdateColumn("collection_num", gorm.Expr("collection_num - 1")).Error
		if err != nil {
			tx.Rollback()
			return
		}
	}
	tx.Commit()
	id = collectionMission.ID
	return
}

func GetCollectionMissionList(uuid string, info request.SearchCollectionMission) (err error, list interface{}, total int64) {
	limit := info.PageSize
	offset := info.PageSize * (info.Page - 1)
	db := global.MG_DB.Model(&model.CollectionMission{}).Joins("INNER JOIN mission ON mission.id = collection_mission.mission_id").
		Where("collection_mission.create_by = ?", uuid)
	err = db.Count(&total).Error
	var res []model.MissionDetail
	err = db.Select("mission.id,mission.title,mission.goods_id,mission.goods_status,mission.num,mission.hire_type,mission.hire_money,mission.hire_ratio,mission.start_time,mission.end_time,mission.`status`,mission.create_by").
		Preload("Goods", func(db *gorm.DB) *gorm.DB {
			return db.Select("id,spu_no,title,title_eng,cover,images,tags,retail_price,price_min,price_max")
		}).Order("collection_mission.id DESC").Limit(limit).Offset(offset).Find(&res).Error
	if err != nil {
		return err, nil, 0
	}
	var (
		ids   []uint
		uuids []string
	)
	for i := 0; i < len(res); i++ {
		if res[i].CreateBy != "" {
			uuids = append(uuids, res[i].CreateBy)
		}
		if res[i].HireType == 1 { // 1:固定佣金
			res[i].HireMoneyExpect = utils.FormatFloatToString(res[i].HireMoney)
		} else { // 2:比例抽成
			if res[i].Goods.PriceMin == res[i].Goods.PriceMax {
				res[i].HireMoneyExpect = utils.FormatFloatToString(res[i].Goods.PriceMin * (res[i].HireRatio / 100))
			} else {
				res[i].HireMoneyExpect = utils.FormatFloatToString(res[i].Goods.PriceMin*(res[i].HireRatio/100)) + "-" + utils.FormatFloatToString(res[i].Goods.PriceMax*(res[i].HireRatio/100))
			}
		}
		ids = append(ids, res[i].ID)
		// res[i].CollectStatus = getMissionCollectStatus(uuid, res[i].ID)
	}
	if len(ids) != 0 {
		statusMap := getMissionCollectStatusMap(uuid, ids)
		for i := 0; i < len(res); i++ {
			res[i].CollectStatus = statusMap[res[i].ID]
		}
	}
	if len(uuids) != 0 {
		_, storeMap := getSellerStoreInfoMap(uuids)
		for i := 0; i < len(res); i++ {
			if val, ok := storeMap[res[i].CreateBy]; ok {
				res[i].Store = val
			}
		}
	}
	return err, res, total
}

func getMissionCollectStatus(uuid string, id uint) (result bool) {
	err := global.MG_DB.Model(&model.CollectionMission{}).Where("create_by = ? AND mission_id = ?", uuid, id).First(&model.CollectionMission{}).Error
	if err != nil {
		return false
	}
	return true
}

func getMissionCollectStatusMap(uuid string, ids []uint) map[uint]bool {
	var (
		list   []model.CollectionMission
		result = make(map[uint]bool)
	)
	err := global.MG_DB.Model(&model.CollectionMission{}).Where("create_by = ? AND mission_id IN (?)", uuid, ids).Find(&list).Error
	if err != nil {
		return result
	}
	for i := 0; i < len(list); i++ {
		result[list[i].MissionId] = true
	}
	for i := 0; i < len(ids); i++ {
		if _, ok := result[ids[i]]; !ok {
			result[ids[i]] = false
		}
	}
	return result
}