支持结账多轮协商与按实际消耗双比例结算

允许双方最多 6 轮修改结账方案；哈夫币按实际消耗与 buyer/seller 比例计价，打超从押金扣，押金不足禁止自动完结并引导人工争议。同步收紧结账明细展示密度。
2026-07-18 20:35:16 +08:00
parent 98772867a7
commit 1a4776bba0
19 changed files with 713 additions and 140 deletions
@@ -123,6 +123,116 @@ func TestCalculateCheckoutSettlementAddsDepositCompensation(t *testing.T) {
 	}
 }

+func TestCalculateCheckoutSettlementAllowsOvershootFromDeposit(t *testing.T) {
+	// 发布 100M，实际消耗 180M；按基价线性外推，打超从押金扣
+	order := model.RentalOrder{
+		RentAmountCent:      26300, // 仅币预收（无消耗品）
+		OwnerRentAmountCent: 23300,
+		DepositAmountCent:   30000,
+		AccountSnapshot: datatypes.JSON([]byte(`{
+			"haf_coin_amount": 100000000,
+			"asset_summary": {
+				"price_breakdown": {
+					"buyer_coin_base_price": 263,
+					"seller_coin_base_price": 233,
+					"consumable_price": 0
+				}
+			}
+		}`)),
+	}
+
+	settlement := calculateCheckoutSettlement(order, 0, 180, 0)
+	// 180/100 * 26300 = 47340
+	if settlement.ActualRentAmountCent != 47340 {
+		t.Fatalf("ActualRentAmountCent = %d, want 47340", settlement.ActualRentAmountCent)
+	}
+	if settlement.OwnerRentIncomeCent != 41940 { // 180/100 * 23300
+		t.Fatalf("OwnerRentIncomeCent = %d, want 41940", settlement.OwnerRentIncomeCent)
+	}
+	if settlement.OvershootAmountCent != 21040 { // 47340 - 26300
+		t.Fatalf("OvershootAmountCent = %d, want 21040", settlement.OvershootAmountCent)
+	}
+	if settlement.ShortfallCent != 0 {
+		t.Fatalf("ShortfallCent = %d, want 0", settlement.ShortfallCent)
+	}
+	if settlement.RentRefundCent != 0 {
+		t.Fatalf("RentRefundCent = %d, want 0", settlement.RentRefundCent)
+	}
+	// 押金 30000 - 打超 21040 = 8960
+	if settlement.DepositRefundCent != 8960 {
+		t.Fatalf("DepositRefundCent = %d, want 8960", settlement.DepositRefundCent)
+	}
+}
+
+func TestCalculateCheckoutSettlementShortfallWhenDepositInsufficient(t *testing.T) {
+	order := model.RentalOrder{
+		RentAmountCent:      26300,
+		OwnerRentAmountCent: 23300,
+		DepositAmountCent:   5000,
+		AccountSnapshot: datatypes.JSON([]byte(`{
+			"haf_coin_amount": 100000000,
+			"asset_summary": {
+				"price_breakdown": {
+					"buyer_coin_base_price": 263,
+					"seller_coin_base_price": 233,
+					"consumable_price": 0
+				}
+			}
+		}`)),
+	}
+
+	settlement := calculateCheckoutSettlement(order, 0, 180, 0)
+	// overshoot 21040, deposit 5000 → shortfall 16040
+	if settlement.OvershootAmountCent != 21040 {
+		t.Fatalf("OvershootAmountCent = %d, want 21040", settlement.OvershootAmountCent)
+	}
+	if settlement.ShortfallCent != 16040 {
+		t.Fatalf("ShortfallCent = %d, want 16040", settlement.ShortfallCent)
+	}
+	if settlement.DepositRefundCent != 0 {
+		t.Fatalf("DepositRefundCent = %d, want 0", settlement.DepositRefundCent)
+	}
+}
+
+func TestCalculateCheckoutSettlementUsesExplicitRatiosForActualConsume(t *testing.T) {
+	// buyer 1:40, seller 1:45；消耗 180M
+	// 租客: 180*100/40 = 450 元；号主: 180*100/45 = 400 元
+	order := model.RentalOrder{
+		RentAmountCent:      25000, // 100M 预收
+		OwnerRentAmountCent: 22222,
+		DepositAmountCent:   50000,
+		AccountSnapshot: datatypes.JSON([]byte(`{
+			"haf_coin_amount": 100000000,
+			"asset_summary": {
+				"price_breakdown": {
+					"buyer_ratio": 40,
+					"seller_ratio": 45,
+					"buyer_coin_base_price": 250,
+					"seller_coin_base_price": 222.22,
+					"consumable_price": 0
+				}
+			}
+		}`)),
+	}
+
+	settlement := calculateCheckoutSettlement(order, 0, 180, 0)
+	if settlement.ActualRentAmountCent != 45000 {
+		t.Fatalf("ActualRentAmountCent = %d, want 45000", settlement.ActualRentAmountCent)
+	}
+	if settlement.OwnerRentIncomeCent != 40000 {
+		t.Fatalf("OwnerRentIncomeCent = %d, want 40000", settlement.OwnerRentIncomeCent)
+	}
+	if settlement.PlatformFeeCent != 5000 {
+		t.Fatalf("PlatformFeeCent = %d, want 5000", settlement.PlatformFeeCent)
+	}
+	if settlement.OvershootAmountCent != 20000 {
+		t.Fatalf("OvershootAmountCent = %d, want 20000", settlement.OvershootAmountCent)
+	}
+	if settlement.ShortfallCent != 0 {
+		t.Fatalf("ShortfallCent = %d, want 0", settlement.ShortfallCent)
+	}
+}
+
 func TestCalculateDepositWaiverUsesSharedRemainingQuota(t *testing.T) {
 	paid, waived := calculateDepositWaiver(500, 300, 0)
 	if paid != 200 || waived != 300 {