fusenapi/model/gmodel/fsproductpricemodel.go

package gmodel

import (
	"context"
	"errors"
	"gorm.io/gorm"
)

type FsProductPrice struct {
	Id            int64    `gorm:"primary_key" json:"id"`
	Sn            *string  `gorm:"default:''" json:"sn"`             // 唯一编码
	Title         *string  `gorm:"default:''" json:"title"`          // 标题描述
	ProductId     *int64   `gorm:"default:0" json:"product_id"`      // 产品ID
	MaterialId    *int64   `gorm:"default:0" json:"material_id"`     // 材质ID
	SizeId        *int64   `gorm:"default:0" json:"size_id"`         // 尺寸ID
	EachBoxNum    *int64   `gorm:"default:0" json:"each_box_num"`    // 每一箱的个数
	EachBoxWeight *float64 `gorm:"default:0" json:"each_box_weight"` // 每一箱的重量 单位KG
	MinBuyNum     *int64   `gorm:"default:0" json:"min_buy_num"`     // 最少购买量
	StepNum       *string  `gorm:"default:''" json:"step_num"`       // 数量阶梯 eg:10,20,30
	StepPrice     *string  `gorm:"default:''" json:"step_price"`     // 价格阶梯 eg:100,50,25
	Status        *int64   `gorm:"default:1" json:"status"`          // 是否可用
	IsDefault     *int64   `gorm:"default:0" json:"is_default"`      // 是否默认
}
type FsProductPriceModel struct {
	db *gorm.DB
}

func NewFsProductPriceModel(db *gorm.DB) *FsProductPriceModel {
	return &FsProductPriceModel{db}
}

type GetPriceListByProductIdsRsp struct {
	ProductId int64  `json:"product_id"`
	Price     string `json:"price"`
}

func (p *FsProductPriceModel) GetPriceListByProductIds(ctx context.Context, productIds []int64) (resp []GetPriceListByProductIdsRsp, err error) {
	if len(productIds) == 0 {
		return nil, nil
	}
	db := p.db.WithContext(ctx).Model(&FsProductPrice{}).Select("product_id,group_concat(step_price) as price").
		Where("`product_id` in (?) and `status` = ? group by product_id", productIds, 1)
	if err = db.Find(&resp).Error; err != nil {
		return nil, err
	}
	return
}
func (p *FsProductPriceModel) GetPriceListBySizeIds(ctx context.Context, sizeIds []int64) (resp []FsProductPrice, err error) {
	if len(sizeIds) == 0 {
		return
	}
	err = p.db.WithContext(ctx).Model(&FsProductPrice{}).Where("`size_id` in (?) and `status` = ? ", sizeIds, 1).Find(&resp).Error
	if err != nil {
		return nil, err
	}
	return
}

type FindOneProductPriceByParamsReq struct {
	ProductId  *int64
	MaterialId *int64
	SizeId     *int64
	Status     *int64
}

func (p *FsProductPriceModel) FindOneProductPriceByParams(ctx context.Context, req FindOneProductPriceByParamsReq) (resp FsProductPrice, err error) {
	db := p.db.WithContext(ctx).Model(&FsProductPrice{})
	if req.ProductId != nil {
		db = db.Where("`product_id` = ?", *req.ProductId)
	}
	if req.MaterialId != nil {
		db = db.Where("`material_id` = ?", *req.MaterialId)
	}
	if req.SizeId != nil {
		db = db.Where("`size_id` = ?", *req.SizeId)
	}
	if req.Status != nil {
		db = db.Where("`status` = ?", *req.Status)
	}
	if err = db.First(&resp).Error; err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
		return FsProductPrice{}, err
	}
	return resp, nil
}