package service

import (
	"context"
	"testing"

	"git.lzcwy.cn/zhengchiliu/zt-closet-backend/internal/dto"
	"git.lzcwy.cn/zhengchiliu/zt-closet-backend/pkg/errcode"
	"github.com/DATA-DOG/go-sqlmock"
)

// TestRefundApplyMarksOrderRefunding 申请退款受理成功：返回待处理退款流水信息，订单 2 -> 6 由 DAO 事务内完成。
func TestRefundApplyMarksOrderRefunding(t *testing.T) {
	mock := setupOrderQuotaTest(t)
	mock.ExpectQuery("SELECT .* FROM `orders` WHERE order_no = \\?").
		WillReturnRows(sqlmock.NewRows([]string{"id", "order_no", "user_id", "order_status", "pay_amount", "pay_channel"}).
			AddRow(8, "ORDER-1", 7, 2, 990, 1))
	mock.ExpectBegin()
	mock.ExpectQuery("SELECT .* FROM `orders` .*FOR UPDATE").
		WillReturnRows(sqlmock.NewRows([]string{"id", "order_no", "user_id", "order_status", "pay_amount"}).
			AddRow(8, "ORDER-1", 7, 2, 990))
	mock.ExpectQuery("SELECT .* FROM `refund_flow_logs`").
		WillReturnRows(sqlmock.NewRows([]string{"id"}))
	mock.ExpectExec("INSERT INTO `refund_flow_logs`").WillReturnResult(sqlmock.NewResult(1, 1))
	mock.ExpectExec("UPDATE `orders` SET").WillReturnResult(sqlmock.NewResult(0, 1))
	mock.ExpectCommit()

	resp, e := NewOrderService().RefundApply(context.Background(), 7,
		&dto.RefundApplyRequest{OrderNo: "ORDER-1", Reason: "不想要了"})
	if e != nil {
		t.Fatalf("unexpected error: %v", e)
	}
	if resp == nil || resp.RefundAmount != 990 || resp.Status != RefundStatusPending || resp.RefundNo == "" {
		t.Fatalf("unexpected response: %+v", resp)
	}
	if err := mock.ExpectationsWereMet(); err != nil {
		t.Fatal(err)
	}
}

// TestRefundApplyRejectsRepeatApply 重复/并发申请被 DAO 拒绝时映射为「当前状态不允许退款」。
func TestRefundApplyRejectsRepeatApply(t *testing.T) {
	mock := setupOrderQuotaTest(t)
	mock.ExpectQuery("SELECT .* FROM `orders` WHERE order_no = \\?").
		WillReturnRows(sqlmock.NewRows([]string{"id", "order_no", "user_id", "order_status", "pay_amount", "pay_channel"}).
			AddRow(8, "ORDER-1", 7, 2, 990, 1))
	// 行锁内读到订单已被并发请求置为 6 申请退款中：拒绝且不产生任何写入。
	mock.ExpectBegin()
	mock.ExpectQuery("SELECT .* FROM `orders` .*FOR UPDATE").
		WillReturnRows(sqlmock.NewRows([]string{"id", "order_no", "user_id", "order_status"}).
			AddRow(8, "ORDER-1", 7, OrderStatusRefunding))
	mock.ExpectCommit()

	resp, e := NewOrderService().RefundApply(context.Background(), 7,
		&dto.RefundApplyRequest{OrderNo: "ORDER-1", Reason: "重复申请"})
	if resp != nil || e != errcode.RefundNotAllowed {
		t.Fatalf("resp=%v err=%v, want RefundNotAllowed", resp, e)
	}
	if err := mock.ExpectationsWereMet(); err != nil {
		t.Fatal(err)
	}
}

// TestRefundApplyRejectsIOSVirtualOrder iOS 虚拟支付订单不走本接口，引导用户走 App Store。
func TestRefundApplyRejectsIOSVirtualOrder(t *testing.T) {
	mock := setupOrderQuotaTest(t)
	mock.ExpectQuery("SELECT .* FROM `orders` WHERE order_no = \\?").
		WillReturnRows(sqlmock.NewRows([]string{"id", "order_no", "user_id", "order_status", "pay_amount", "pay_channel", "xpay_platform"}).
			AddRow(8, "ORDER-1", 7, 2, 990, 2, "ios"))

	resp, e := NewOrderService().RefundApply(context.Background(), 7,
		&dto.RefundApplyRequest{OrderNo: "ORDER-1", Reason: "不想要了"})
	if resp != nil || e != errcode.IOSRefundViaAppStore {
		t.Fatalf("resp=%v err=%v, want IOSRefundViaAppStore", resp, e)
	}
	if err := mock.ExpectationsWereMet(); err != nil {
		t.Fatal(err)
	}
}

// TestRefundApplyRejectsOtherUserOrder 非本人订单不允许申请退款（归属校验先于状态校验）。
func TestRefundApplyRejectsOtherUserOrder(t *testing.T) {
	mock := setupOrderQuotaTest(t)
	mock.ExpectQuery("SELECT .* FROM `orders` WHERE order_no = \\?").
		WillReturnRows(sqlmock.NewRows([]string{"id", "order_no", "user_id", "order_status", "pay_amount", "pay_channel"}).
			AddRow(8, "ORDER-1", 9, 2, 990, 1))

	resp, e := NewOrderService().RefundApply(context.Background(), 7,
		&dto.RefundApplyRequest{OrderNo: "ORDER-1", Reason: "越权申请"})
	if resp != nil || e != errcode.Forbidden {
		t.Fatalf("resp=%v err=%v, want Forbidden", resp, e)
	}
	if err := mock.ExpectationsWereMet(); err != nil {
		t.Fatal(err)
	}
}