x

internal/logic/public/order/newUserDiscountEligibility.go

@@ -0,0 +1,63 @@
+package order
+
+import (
+	"context"
+	"encoding/json"
+	"time"
+
+	commonLogic "github.com/perfect-panel/server/internal/logic/common"
+	"github.com/perfect-panel/server/internal/types"
+	"gorm.io/gorm"
+)
+
+type newUserDiscountEligibility struct {
+	Eligibility         *commonLogic.NewUserEligibilityContext
+	Discounts           []types.SubscribeDiscount
+	NewUserOnly         bool
+	WithinWindow        bool
+	EligibleForDiscount bool
+}
+
+func resolveNewUserDiscountEligibility(
+	ctx context.Context,
+	db *gorm.DB,
+	currentUserID int64,
+	subscribeID int64,
+	quantity int64,
+	discountJSON string,
+) (*newUserDiscountEligibility, error) {
+	state := &newUserDiscountEligibility{}
+	if discountJSON == "" {
+		return state, nil
+	}
+
+	_ = json.Unmarshal([]byte(discountJSON), &state.Discounts)
+	state.NewUserOnly = isNewUserOnlyForQuantity(state.Discounts, quantity)
+
+	eligibility, err := commonLogic.ResolveNewUserEligibility(ctx, db, currentUserID)
+	if err != nil {
+		return nil, err
+	}
+	state.Eligibility = eligibility
+	state.WithinWindow = eligibility.IsNewUserAt(time.Now())
+	state.EligibleForDiscount = state.WithinWindow
+
+	if state.EligibleForDiscount && state.NewUserOnly {
+		historyCount, countErr := commonLogic.CountScopedSubscribePurchaseOrders(
+			ctx,
+			db,
+			eligibility.ScopeUserIDs,
+			subscribeID,
+			[]int64{2, 5},
+			"",
+		)
+		if countErr != nil {
+			return nil, countErr
+		}
+		if historyCount >= 1 {
+			state.EligibleForDiscount = false
+		}
+	}
+
+	return state, nil
+}