mirror of
https://github.com/hanzoai/commerce.git
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zeekay
1943f1c093
Multi-tenant commerce and billing: orders, subscriptions, invoices, plans, usage metering and a credit ledger. One Go binary. MIT OR Apache-2.0. Claude-Session: https://claude.ai/code/session_01SAtaDFm8VDiWrhYHNNtxMw
127 lines
2.8 KiB
Go
127 lines
2.8 KiB
Go
package discount
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import (
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"time"
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"github.com/hanzoai/commerce/datastore"
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"github.com/hanzoai/commerce/log"
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"github.com/hanzoai/commerce/models/discount/rule"
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"github.com/hanzoai/commerce/models/discount/scope"
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"github.com/hanzoai/commerce/models/discount/target"
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"github.com/hanzoai/commerce/models/mixin"
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"github.com/hanzoai/commerce/util/timeutil"
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"github.com/hanzoai/orm"
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)
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func init() { orm.Register[Discount]("discount") }
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type Type string
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const (
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Flat Type = "flat"
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Percent = "percent"
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FreeShipping = "free-shipping"
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FreeItem = "free-item"
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Bulk = "bulk"
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)
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var Types = []Type{Flat, Percent, FreeShipping, FreeItem, Bulk}
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// Encompasses a given rule trigger and discount amount
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type Rule struct {
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// Condition which triggers this rule
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Trigger rule.Trigger `json:"trigger"`
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// Action which happens as result of trigger
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Action rule.Action `json:"action"`
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}
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type Scope struct {
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// The scope these rules qualify against
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Type scope.Type `json:"type"`
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// Id for this rule
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StoreId string `json:"storeId,omitempty"`
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CollectionId string `json:"collectionId,omitempty"`
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ProductId string `json:"productId,omitempty"`
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VariantId string `json:"variantId,omitempty"`
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}
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type Target struct {
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// Target for which all rules apply
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Type target.Type `json:"type"`
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// Id for the target
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ProductId string `json:"productId,omitempty"`
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VariantId string `json:"variantId,omitempty"`
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}
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type Discount struct {
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mixin.Model[Discount]
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Name string `json:"name"`
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// Type of discount rule
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Type Type `json:"type"`
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// Date range in which discount is valid
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StartDate time.Time `json:"startDate"`
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EndDate time.Time `json:"endDate"`
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Scope Scope `json:"scope"`
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Target Target `json:"target"`
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// Rules for this discount
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Rules []Rule `json:"rules" orm:"default:[]"`
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// Whether discount is enabled.
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Enabled bool `json:"enabled" orm:"default:true"`
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}
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func (d Discount) ValidFor(t time.Time) bool {
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ctx := d.Context()
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if !d.Enabled {
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log.Warn("Discount Not Enabled", ctx)
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return false // currently active, no need to check?
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}
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if !timeutil.IsZero(d.StartDate) && d.StartDate.After(t) {
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log.Warn("Discount not yet Usable: %v > %v", d.StartDate.Unix(), t, ctx)
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return false
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}
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if !timeutil.IsZero(d.EndDate) && d.EndDate.Before(t) {
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log.Warn("Discount is Expired: %v < %v", d.EndDate.Unix(), t, ctx)
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return false
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}
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return true
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}
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func (d Discount) ScopeId() string {
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if d.Scope.StoreId != "" {
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return d.Scope.StoreId
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}
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if d.Scope.CollectionId != "" {
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return d.Scope.CollectionId
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}
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if d.Scope.ProductId != "" {
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return d.Scope.ProductId
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}
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if d.Scope.VariantId != "" {
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return d.Scope.ProductId
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}
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return ""
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}
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func New(db *datastore.Datastore) *Discount {
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d := new(Discount)
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d.Init(db)
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return d
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}
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func Query(db *datastore.Datastore) datastore.Query {
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return db.Query("discount")
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}
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