package godown

import (
	"server/global"
)

type Goods struct {
	global.GVA_MODEL
	CommodityId   int         `json:"commodityId" gorm:"comment:商品id"`
	Commodity     Commodity   `json:"commodity" gorm:"foreignKey:CommodityId;references:id;"`
	Number        int         `json:"number" gorm:"comment:数量"`
	WarehouseId   int         `json:"warehouseId" gorm:"comment:仓库id"`
	Warehouse     Warehouse   `json:"warehouse" gorm:"foreignKey:WarehouseId;references:id;"`
	StorageAreaId int         `json:"storageAreaId" gorm:"comment:库区id"`
	StorageArea   StorageArea `json:"storageArea" gorm:"foreignKey:StorageAreaId;references:id;"`
	PlaceId       int         `json:"placeId" gorm:"comment:库位id"`
	Place         Place       `json:"place" gorm:"foreignKey:PlaceId;references:id;"`
}

func (Goods) TableName() string {
	return "goods"
}

func QueryAllGoods() (goods []Goods, err error) {
	err = global.GVA_DB.Model(&Goods{}).Preload("Commodity").Preload("Warehouse").Preload("StorageArea").Preload("Place").Find(&goods).Error
	return
}

func QueryGoodsList(limit, offset, commodityId, warehouseId, storageAreaId, placeId int) (goods []Goods, total int64, err error) {
	// 创建db
	db := global.GVA_DB.Model(&Goods{}).Debug()
	// 如果有条件搜索 下方会自动创建搜索语句

	if commodityId != 0 {
		db = db.Where("commodity_id = ?", commodityId)
	}
	if warehouseId != 0 {
		db = db.Where("warehouse_id = ?", warehouseId)
	}
	if storageAreaId != 0 {
		db = db.Where("storage_area_id = ?", storageAreaId)
	}
	if placeId != 0 {
		db = db.Where("place_id = ?", placeId)
	}

	err = db.Count(&total).Error
	if err != nil {
		return
	}
	err = db.Order("id desc").Limit(limit).Offset(offset).Preload("Commodity").Preload("Warehouse").Preload("StorageArea").Preload("Place").Find(&goods).Error
	return goods, total, err
}

func GetInventory(commodityId, warehouseId, storageAreaId, placeId int) (goods Goods, commodity Commodity, place Place) {
	global.GVA_DB.Model(&Goods{}).
		Where("commodity_id = ? AND warehouse_id = ? AND storage_area_id = ? AND place_id = ?",
			commodityId, warehouseId, storageAreaId, placeId).
		First(&goods)

	global.GVA_DB.First(&commodity, commodityId)
	global.GVA_DB.First(&place, placeId)
	return
}

func (g Goods) CreateGoods() error {
	return global.GVA_DB.Create(&g).Error
}

func (g Goods) UpdateGoods() error {
	return global.GVA_DB.Where("id = ?", g.ID).Updates(&g).Error
}

func DeleteGoods(id int) error {
	return global.GVA_DB.Where("id = ?", id).Unscoped().Delete(&Goods{}).Error
}