66 lines
1.8 KiB
Go
66 lines
1.8 KiB
Go
package product
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import (
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productv1 "gitea.timerzz.com/kedaya_haitao/common/model/product"
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"gorm.io/gorm"
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"time"
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)
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type Option struct {
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ID uint `gorm:"primary_key" json:"id"`
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Interval time.Duration `yaml:"interval" json:"interval"`
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ExchangeRate float64 `yaml:"exchangeRate" json:"exchangeRate"` //汇率
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Freight float64 `yaml:"freight" json:"freight"` //运费
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Discount int `yaml:"discount" json:"discount"` //折扣
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}
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func (c *Controller) LoadOption() {
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c.db.Where("id = ?", 1).Attrs(Option{Interval: time.Hour * 12, ExchangeRate: 7.3, Freight: 100, Discount: 100}).FirstOrCreate(&c.Option)
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}
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func (c *Controller) SaveOption(opt Option) {
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if opt.Interval > 0 {
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c.Option.Interval = opt.Interval
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}
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var change bool
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var oldFreight float64
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if opt.ExchangeRate > 0 && opt.ExchangeRate != c.Option.ExchangeRate {
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c.Option.ExchangeRate = opt.ExchangeRate
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change = true
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}
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if opt.Freight > 0 && opt.Freight != c.Option.Freight {
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c.Option.Freight, oldFreight = opt.Freight, c.Option.Freight
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change = true
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}
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if opt.Discount > 0 && opt.Discount != c.Option.Discount {
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c.Option.Discount = opt.Discount
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change = true
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}
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opt.ID = 1
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c.db.Updates(opt)
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if change {
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c.updateRate(oldFreight)
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}
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}
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func (c *Controller) updateRate(oldFreight float64) {
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var results []*productv1.Product
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c.db.FindInBatches(&results, 20, func(tx *gorm.DB, batch int) error {
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for _, result := range results {
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if result.Freight == oldFreight {
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result.Freight = c.Option.Freight
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}
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result.ExchangeRate = c.Option.ExchangeRate
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result.Discount = c.Option.Discount
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}
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// 保存对当前批记录的修改
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tx.Save(&results)
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return nil
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})
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}
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func (c *Controller) GetOption() Option {
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return c.Option
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}
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