package order

import (
	"testing"

	"hfb_sys/backend/internal/model"

	"gorm.io/datatypes"
)

func TestCalculateInsuranceFeeCent(t *testing.T) {
	tests := []struct {
		name      string
		ownerCent int64
		bps       int
		want      int64
	}{
		{name: "普通赔付不收费", ownerCent: 10000, bps: 0, want: 0},
		{name: "普通保险百分之八", ownerCent: 10000, bps: 800, want: 800},
		{name: "极品保险百分之四", ownerCent: 10000, bps: 400, want: 400},
		{name: "四舍五入到分", ownerCent: 12345, bps: 800, want: 988},
		{name: "服务费不超过到手租金", ownerCent: 100, bps: 10000, want: 100},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := calculateInsuranceFeeCent(tt.ownerCent, tt.bps); got != tt.want {
				t.Fatalf("calculateInsuranceFeeCent() = %d, want %d", got, tt.want)
			}
		})
	}
}

func TestCalculateCheckoutSettlementDeductsPremiumInsuranceFee(t *testing.T) {
	order := model.RentalOrder{
		RentAmountCent:      38300,
		OwnerRentAmountCent: 35300,
		DepositAmountCent:   15000,
		InsuranceFeeBps:     400,
		AccountSnapshot: datatypes.JSON([]byte(`{
			"haf_coin_amount": 100000000,
			"asset_summary": {
				"price_breakdown": {
					"buyer_coin_base_price": 263,
					"seller_coin_base_price": 233,
					"consumable_price": 120
				}
			}
		}`)),
	}

	settlement := calculateCheckoutSettlement(order, 12000, 100, 0)
	if settlement.InsuranceFeeBps != 400 || settlement.InsuranceFeeCent != 932 {
		t.Fatalf("保险费用快照不正确: bps=%d fee=%d", settlement.InsuranceFeeBps, settlement.InsuranceFeeCent)
	}
	if settlement.OwnerRentIncomeCent != 34368 {
		t.Fatalf("号主净租金 = %d, want 34368", settlement.OwnerRentIncomeCent)
	}
	if settlement.PlatformFeeCent != 3932 {
		t.Fatalf("平台收入 = %d, want 3932", settlement.PlatformFeeCent)
	}
}

func TestCalculateCheckoutSettlementUsesActualPureCoinAsInsuranceBase(t *testing.T) {
	order := model.RentalOrder{
		RentAmountCent:      25000,
		OwnerRentAmountCent: 25000,
		DepositAmountCent:   15000,
		InsuranceFeeBps:     800,
		AccountSnapshot: datatypes.JSON([]byte(`{
			"haf_coin_amount": 100000000,
			"asset_summary": {
				"price_breakdown": {
					"buyer_ratio": 40,
					"seller_ratio": 40,
					"buyer_coin_base_price": 250,
					"seller_coin_base_price": 250,
					"consumable_price": 0
				}
			}
		}`)),
	}

	settlement := calculateCheckoutSettlement(order, 5000, 50, 0)
	if settlement.PureCoinAmountCent != 12500 {
		t.Fatalf("实际纯币原价 = %d, want 12500", settlement.PureCoinAmountCent)
	}
	if settlement.InsuranceFeeCent != 1000 {
		t.Fatalf("保险费用 = %d, want 1000", settlement.InsuranceFeeCent)
	}
	if settlement.ExtraItemAmountCent != 5000 {
		t.Fatalf("额外物品 = %d, want 5000", settlement.ExtraItemAmountCent)
	}
	if settlement.OwnerRentIncomeCent != 16500 {
		t.Fatalf("号主净租金 = %d, want 16500", settlement.OwnerRentIncomeCent)
	}
}