// 功能描述：验证结算金额确认、溢出回滚及已有订单的幂等恢复。
// 版本：1.0.0。
package user

import (
	"fmt"
	"math"
	"strings"
	"testing"

	"git.apinb.com/heqiapp/platforms/backend/api/internal/models"
	"github.com/DATA-DOG/go-sqlmock"
)

func TestCheckoutMoneyAndRollback(t *testing.T) {
	for _, tc := range []struct {
		name            string
		price, expected int64
		code            int
	}{
		{"数量按服务端价格结算", 12800, 25600, 0},
		{"价格变化回滚库存", 12800, 12800, 2401},
		{"金额溢出不扣库存", math.MaxInt64, 0, 1711},
	} {
		t.Run(tc.name, func(t *testing.T) {
			mock := primaryTestDB(t)
			expectAddressAccount(mock)
			mock.ExpectQuery(`SELECT .* FROM "ec_order"`).WillReturnRows(sqlmock.NewRows([]string{"id"}))
			mock.ExpectQuery(`SELECT .* FROM "user_address"`).WillReturnRows(sqlmock.NewRows([]string{"id", "identity", "address"}).AddRow(2, "owned", "测试地址"))
			mock.ExpectBegin()
			mock.ExpectQuery(`SELECT .* FROM "ec_product".*FOR UPDATE`).WillReturnRows(sqlmock.NewRows([]string{"id", "identity", "price_amount", "stock_quantity"}).AddRow(3, "product", tc.price, 20))
			if tc.code != 1711 {
				mock.ExpectExec(`UPDATE "ec_product" SET "stock_quantity"`).WillReturnResult(sqlmock.NewResult(0, 1))
				mock.ExpectQuery(`SELECT .* FROM "ec_product_image"`).
					WillReturnRows(sqlmock.NewRows([]string{"id", "image_uri"}).AddRow(8, "/uploads/products/cover.png"))
			}
			if tc.code == 0 {
				mock.ExpectQuery(`INSERT INTO "ec_order"`).WillReturnRows(sqlmock.NewRows([]string{"id"}).AddRow(5))
				mock.ExpectQuery(`INSERT INTO "ec_order_item"`).WillReturnRows(sqlmock.NewRows([]string{"id"}).AddRow(6))
				mock.ExpectCommit()
			} else {
				mock.ExpectRollback()
				mock.ExpectQuery(`SELECT .* FROM "ec_order"`).WillReturnRows(sqlmock.NewRows([]string{"id"}))
			}
			ctx, response := addressContext(fmt.Sprintf(`{"request_no":"order-request","address_identity":"owned","contact_name":"收货人","contact_phone":"13800000001","expected_payable_amount":%d,"items":[{"product_identity":"product","quantity":2}]}`, tc.expected), "")
			CreateShopOrder(ctx)
			if !strings.Contains(response.Body.String(), fmt.Sprintf(`"code":%d`, tc.code)) {
				t.Fatal(response.Body.String())
			}
			if tc.code == 0 && !strings.Contains(response.Body.String(), `"payable_amount":25600`) {
				t.Fatal("未按数量返回总额")
			}
			if err := mock.ExpectationsWereMet(); err != nil {
				t.Fatal(err)
			}
		})
	}
}

func TestShopOrderProductSnapshotIncludesCover(t *testing.T) {
	value := shopOrderProductSnapshot(models.EcProduct{Entity: models.Entity{Identity: "product"}, Name: "报警器", ProductCode: "BJQ-01"}, "/uploads/products/cover.png")
	for _, expected := range []string{`"identity":"product"`, `"name":"报警器"`, `"product_code":"BJQ-01"`, `"image_url":"/uploads/products/cover.png"`} {
		if !strings.Contains(value, expected) {
			t.Fatalf("订单商品快照缺少 %s: %s", expected, value)
		}
	}
}

func TestCheckoutRetrySurvivesAddressRemoval(t *testing.T) {
	mock := primaryTestDB(t)
	expectAddressAccount(mock)
	mock.ExpectQuery(`SELECT .* FROM "ec_order".*request_no = \$1 AND user_account_id = \$2`).WillReturnRows(sqlmock.NewRows([]string{"id", "identity", "payable_amount"}).AddRow(5, "existing-order", 25600))
	ctx, response := addressContext(`{"request_no":"order-request","address_identity":"removed","contact_name":"收货人","contact_phone":"13800000001","items":[{"product_identity":"product","quantity":2}]}`, "")
	CreateShopOrder(ctx)
	if !strings.Contains(response.Body.String(), `"identity":"existing-order"`) {
		t.Fatal(response.Body.String())
	}
	if err := mock.ExpectationsWereMet(); err != nil {
		t.Fatal(err)
	}
}