init: 1.0.0

internal/logic/public/portal/prePurchaseOrderLogic.go

@@ -0,0 +1,92 @@
+package portal
+
+import (
+	"context"
+	"encoding/json"
+
+	"github.com/perfect-panel/ppanel-server/pkg/tool"
+
+	"github.com/perfect-panel/ppanel-server/internal/svc"
+	"github.com/perfect-panel/ppanel-server/internal/types"
+	"github.com/perfect-panel/ppanel-server/pkg/logger"
+	"github.com/perfect-panel/ppanel-server/pkg/xerr"
+	"github.com/pkg/errors"
+	"gorm.io/gorm"
+)
+
+type PrePurchaseOrderLogic struct {
+	logger.Logger
+	ctx    context.Context
+	svcCtx *svc.ServiceContext
+}
+
+// Pre Purchase Order
+func NewPrePurchaseOrderLogic(ctx context.Context, svcCtx *svc.ServiceContext) *PrePurchaseOrderLogic {
+	return &PrePurchaseOrderLogic{
+		Logger: logger.WithContext(ctx),
+		ctx:    ctx,
+		svcCtx: svcCtx,
+	}
+}
+
+func (l *PrePurchaseOrderLogic) PrePurchaseOrder(req *types.PrePurchaseOrderRequest) (resp *types.PrePurchaseOrderResponse, err error) {
+	// find subscribe plan
+	sub, err := l.svcCtx.SubscribeModel.FindOne(l.ctx, req.SubscribeId)
+	if err != nil {
+		l.Errorw("[PreCreateOrder] Database query error", logger.Field("error", err.Error()), logger.Field("subscribe_id", req.SubscribeId))
+		return nil, errors.Wrapf(xerr.NewErrCode(xerr.DatabaseQueryError), "find subscribe error: %v", err.Error())
+	}
+	var discount float64 = 1
+	if sub.Discount != "" {
+		var dis []types.SubscribeDiscount
+		_ = json.Unmarshal([]byte(sub.Discount), &dis)
+		discount = getDiscount(dis, req.Quantity)
+	}
+	price := sub.UnitPrice * req.Quantity
+	amount := int64(float64(price) * discount)
+	discountAmount := price - amount
+	var coupon int64
+	if req.Coupon != "" {
+		couponInfo, err := l.svcCtx.CouponModel.FindOneByCode(l.ctx, req.Coupon)
+		if err != nil {
+			if errors.Is(err, gorm.ErrRecordNotFound) {
+				return nil, errors.Wrapf(xerr.NewErrCode(xerr.CouponNotExist), "coupon not found")
+			}
+			return nil, errors.Wrapf(xerr.NewErrCode(xerr.DatabaseQueryError), "find coupon error: %v", err.Error())
+		}
+		if couponInfo.Count <= couponInfo.UsedCount {
+			return nil, errors.Wrapf(xerr.NewErrCode(xerr.CouponInsufficientUsage), "coupon used")
+		}
+		subs := tool.StringToInt64Slice(couponInfo.Subscribe)
+
+		if len(subs) > 0 && !tool.Contains(subs, req.SubscribeId) {
+			return nil, errors.Wrapf(xerr.NewErrCode(xerr.CouponNotApplicable), "coupon not match")
+		}
+
+		coupon = calculateCoupon(amount, couponInfo)
+	}
+	amount -= coupon
+	var feeAmount int64
+	if req.Payment != 0 {
+		payment, err := l.svcCtx.PaymentModel.FindOne(l.ctx, req.Payment)
+		if err != nil {
+			l.Logger.Error("[PreCreateOrder] Database query error", logger.Field("error", err.Error()), logger.Field("payment", req.Payment))
+			return nil, errors.Wrapf(xerr.NewErrCode(xerr.DatabaseQueryError), "find payment method error: %v", err.Error())
+		}
+		// Calculate the handling fee
+		if amount > 0 {
+			feeAmount = calculateFee(amount, payment)
+		}
+		amount += feeAmount
+	}
+
+	resp = &types.PrePurchaseOrderResponse{
+		Price:          price,
+		Amount:         amount,
+		Discount:       discountAmount,
+		Coupon:         req.Coupon,
+		CouponDiscount: coupon,
+		FeeAmount:      feeAmount,
+	}
+	return
+}