package models

import (
	"fmt"
	"github.com/shopspring/decimal"
	"gorm.io/gorm"
	"wms/pkg/mysqlx"
)

type (
	ReorderRule struct {
		WmsModel
		Id           int             `json:"id" gorm:"column:id;primary_key;AUTO_INCREMENT"`
		ProductId    string          `json:"productId" gorm:"type:varchar(191);not null;comment:产品id"` //产品id
		Product      Material        `json:"product" gorm:"foreignKey:ProductId;references:ID"`
		LocationId   int             `json:"locationId" gorm:"type:int;not null;comment:位置id"` //位置id
		Location     Location        `json:"location" gorm:"foreignKey:LocationId;references:id"`
		Route        string          `json:"route" gorm:"type:varchar(255);comment:路线"`            //路线
		MinInventory decimal.Decimal `json:"minInventory" gorm:"type:decimal(35,18);comment:最小库存"` //最小库存
		MaxInventory decimal.Decimal `json:"maxInventory" gorm:"type:decimal(35,18);comment:最大库存"` //最大库存
		OrderNumber  decimal.Decimal `json:"orderNumber" gorm:"type:decimal(35,18);comment:订购数量"`  //订购数量
		Unit         string          `json:"unit" gorm:"type:varchar(100);comment:单位"`             //单位
		Amount       decimal.Decimal `json:"amount" gorm:"-"`                                      //在库数量
		Prediction   decimal.Decimal `json:"prediction" gorm:"-"`                                  //预测数量
		SupplierId   int64           `json:"supplierId" gorm:"-"`                                  //供应商id
	}
	ReorderRuleSearch struct {
		ReorderRule
		PageNum  int
		PageSize int
		Keyword  string
		Orm      *gorm.DB
		Preload  bool
	}
)

func (slf *ReorderRule) TableName() string {
	return "wms_reorder_rule"
}

func NewReorderRuleSearch() *ReorderRuleSearch {
	return &ReorderRuleSearch{Orm: mysqlx.GetDB()}
}

func (slf *ReorderRuleSearch) SetOrm(tx *gorm.DB) *ReorderRuleSearch {
	slf.Orm = tx
	return slf
}

func (slf *ReorderRuleSearch) SetPage(page, size int) *ReorderRuleSearch {
	slf.PageNum, slf.PageSize = page, size
	return slf
}

func (slf *ReorderRuleSearch) SetID(ID int) *ReorderRuleSearch {
	slf.Id = ID
	return slf
}

func (slf *ReorderRuleSearch) SetKeyword(keyword string) *ReorderRuleSearch {
	slf.Keyword = keyword
	return slf
}

func (slf *ReorderRuleSearch) SetProductId(productId string) *ReorderRuleSearch {
	slf.ProductId = productId
	return slf
}

func (slf *ReorderRuleSearch) SetLocationId(locationId int) *ReorderRuleSearch {
	slf.LocationId = locationId
	return slf
}

func (slf *ReorderRuleSearch) SetPreload(preload bool) *ReorderRuleSearch {
	slf.Preload = preload
	return slf
}

func (slf *ReorderRuleSearch) build() *gorm.DB {
	var db = slf.Orm.Model(&ReorderRule{})
	if slf.Id != 0 {
		db = db.Where("id = ?", slf.Id)
	}
	if slf.ProductId != "" {
		db = db.Where("product_id = ?", slf.ProductId)
	}
	if slf.LocationId != 0 {
		db = db.Where("location_id = ?", slf.LocationId)
	}

	if slf.Preload {
		db = db.Preload("Product").Preload("Location")
	}

	return db
}

// Create 单条插入
func (slf *ReorderRuleSearch) Create(record *ReorderRule) error {
	var db = slf.build()

	if err := db.Create(record).Error; err != nil {
		return err
	}

	return nil
}

func (slf *ReorderRuleSearch) Update(record *ReorderRule) error {
	var db = slf.build()

	if err := db.Omit("CreatedAt").Updates(record).Error; err != nil {
		return fmt.Errorf("update err: %v, record: %+v", err, record)
	}

	return nil
}

func (slf *ReorderRuleSearch) Count() (int64, error) {
	var (
		total int64
		db    = slf.build()
	)

	err := db.Count(&total).Error
	return total, err
}

func (slf *ReorderRuleSearch) First() (*ReorderRule, error) {
	var (
		record = new(ReorderRule)
		db     = slf.build()
	)

	if err := db.First(record).Error; err != nil {
		return record, err
	}

	return record, nil
}

func (slf *ReorderRuleSearch) Find() ([]*ReorderRule, int64, error) {
	var (
		records = make([]*ReorderRule, 0)
		total   int64
		db      = slf.build()
	)

	if err := db.Count(&total).Error; err != nil {
		return records, total, fmt.Errorf("find count err: %v", err)
	}
	if slf.PageNum*slf.PageSize > 0 {
		db = db.Offset((slf.PageNum - 1) * slf.PageSize).Limit(slf.PageSize)
	}
	if err := db.Order("created_at desc").Find(&records).Error; err != nil {
		return records, total, fmt.Errorf("find records err: %v", err)
	}

	return records, total, nil
}

func (slf *ReorderRuleSearch) Delete() error {
	var db = slf.build()
	return db.Delete(&ReorderRule{}).Error
}