修复预计 截止时间

backend/internal/modules/order/pricing.go

@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"math"
 	"strconv"
+	"time"
 
 	"hfb_sys/backend/internal/model"
 	"hfb_sys/backend/pkg/money"
@@ -35,6 +36,38 @@ func orderDurationHours(order model.RentalOrder) int {
 	return internalOrderHours
 }
 
+func orderEstimatedEndAt(order model.RentalOrder) *time.Time {
+	if order.RentedAt == nil {
+		return nil
+	}
+	durationHours := orderDurationHours(order)
+	if durationHours <= 0 {
+		return nil
+	}
+	endAt := order.RentedAt.Add(time.Duration(durationHours) * time.Hour)
+	return &endAt
+}
+
+func estimateOrderDurationHours(snapshot datatypes.JSON) int {
+	hafCoinM := readOrderSnapshotCoinM(snapshot)
+	if hafCoinM <= 0 {
+		return internalOrderHours
+	}
+	dailyLossM := readOrderSnapshotAssetNumber(snapshot, "daily_loss_m")
+	if dailyLossM <= 0 {
+		return internalOrderHours
+	}
+	days := hafCoinM / dailyLossM
+	if days <= 0 {
+		return internalOrderHours
+	}
+	hours := int(math.Round(days * 24))
+	if hours <= 0 {
+		return internalOrderHours
+	}
+	return hours
+}
+
 func buildOrderPricing(listing model.RentalListing, account model.GameAccount) orderPricing {
 	rentAmountCent := listing.PriceCent
 	ownerRentAmountCent := int64(math.Round(readSnapshotPrice(account.AssetSummary, "seller_total_price") * 100))
@@ -203,6 +236,24 @@ func readOrderSnapshotCoinM(raw datatypes.JSON) float64 {
 	return roundQuantity(readJSONNumber(snapshot["haf_coin_amount"]) / 1000000)
 }
 
+func readOrderSnapshotAssetNumber(raw datatypes.JSON, key string) float64 {
+	if len(raw) == 0 {
+		return 0
+	}
+	var snapshot map[string]any
+	if err := json.Unmarshal(raw, &snapshot); err != nil {
+		return 0
+	}
+	assetSummary, ok := snapshot["asset_summary"].(map[string]any)
+	if !ok {
+		return readJSONNumber(snapshot[key])
+	}
+	if value, ok := assetSummary[key]; ok {
+		return readJSONNumber(value)
+	}
+	return readJSONNumber(snapshot[key])
+}
+
 // roundMoney 使用统一的角精度（0.1元）
 func roundMoney(value float64) float64 {
 	return money.Round(value)