package services

import (
	"context"
	"database/sql"
	"testing"

	"quyun/v2/app/commands/testx"
	order_dto "quyun/v2/app/http/v1/dto"
	"quyun/v2/database"
	"quyun/v2/database/models"
	"quyun/v2/pkg/consts"

	. "github.com/smartystreets/goconvey/convey"
	"github.com/spf13/cast"
	"github.com/stretchr/testify/suite"
	"go.ipao.vip/atom/contracts"
	"go.uber.org/dig"
)

type OrderTestSuiteInjectParams struct {
	dig.In

	DB       *sql.DB
	Initials []contracts.Initial `group:"initials"`
}

type OrderTestSuite struct {
	suite.Suite
	OrderTestSuiteInjectParams
}

func Test_Order(t *testing.T) {
	providers := testx.Default().With(Provide)

	testx.Serve(providers, t, func(p OrderTestSuiteInjectParams) {
		suite.Run(t, &OrderTestSuite{OrderTestSuiteInjectParams: p})
	})
}

func (s *OrderTestSuite) Test_PurchaseFlow() {
	Convey("Purchase Flow", s.T(), func() {
		ctx := s.T().Context()
		database.Truncate(ctx, s.DB,
			models.TableNameOrder, models.TableNameOrderItem, models.TableNameUser,
			models.TableNameContent, models.TableNameContentPrice, models.TableNameTenant,
			models.TableNameContentAccess, models.TableNameTenantLedger,
		)

		// 1. Setup Data
		// Creator
		creator := &models.User{Username: "creator", Phone: "13800000001"}
		models.UserQuery.WithContext(ctx).Create(creator)
		// Tenant
		tenant := &models.Tenant{UserID: creator.ID, Name: "Music Shop", Code: "shop1", Status: consts.TenantStatusVerified}
		models.TenantQuery.WithContext(ctx).Create(tenant)
		// Content
		content := &models.Content{TenantID: tenant.ID, UserID: creator.ID, Title: "Song A", Status: consts.ContentStatusPublished}
		models.ContentQuery.WithContext(ctx).Create(content)
		// Price (10.00 CNY = 1000 cents)
		price := &models.ContentPrice{TenantID: tenant.ID, ContentID: content.ID, PriceAmount: 1000, Currency: consts.CurrencyCNY}
		models.ContentPriceQuery.WithContext(ctx).Create(price)

		// Buyer
		buyer := &models.User{Username: "buyer", Phone: "13900000001", Balance: 2000} // Has 20.00
		models.UserQuery.WithContext(ctx).Create(buyer)

		buyerCtx := context.WithValue(ctx, consts.CtxKeyUser, buyer.ID)

		Convey("should create and pay order successfully", func() {
			// Step 1: Create Order
			form := &order_dto.OrderCreateForm{ContentID: cast.ToString(content.ID)}
			createRes, err := Order.Create(buyerCtx, form)
			So(err, ShouldBeNil)
			So(createRes.OrderID, ShouldNotBeEmpty)

			// Verify created status
			oid := cast.ToInt64(createRes.OrderID)
			o, _ := models.OrderQuery.WithContext(ctx).Where(models.OrderQuery.ID.Eq(oid)).First()
			So(o.Status, ShouldEqual, consts.OrderStatusCreated)
			So(o.AmountPaid, ShouldEqual, 1000)

			// Step 2: Pay Order
			payForm := &order_dto.OrderPayForm{Method: "balance"}
			_, err = Order.Pay(buyerCtx, createRes.OrderID, payForm)
			So(err, ShouldBeNil)

			// Verify Order Paid
			o, _ = models.OrderQuery.WithContext(ctx).Where(models.OrderQuery.ID.Eq(oid)).First()
			So(o.Status, ShouldEqual, consts.OrderStatusPaid)
			So(o.PaidAt, ShouldNotBeZeroValue)

			// Verify Balance Deducted
			b, _ := models.UserQuery.WithContext(ctx).Where(models.UserQuery.ID.Eq(buyer.ID)).First()
			So(b.Balance, ShouldEqual, 1000) // 2000 - 1000

			// Verify Access Granted
			access, _ := models.ContentAccessQuery.WithContext(ctx).Where(models.ContentAccessQuery.UserID.Eq(buyer.ID), models.ContentAccessQuery.ContentID.Eq(content.ID)).First()
			So(access, ShouldNotBeNil)
			So(access.Status, ShouldEqual, consts.ContentAccessStatusActive)

			// Verify Ledger Created (Creator received money logic?)
			// Note: My implementation credits the TENANT OWNER (creator.ID).
			l, _ := models.TenantLedgerQuery.WithContext(ctx).Where(models.TenantLedgerQuery.OrderID.Eq(o.ID)).First()
			So(l, ShouldNotBeNil)
			So(l.UserID, ShouldEqual, creator.ID)
			So(l.Amount, ShouldEqual, 1000)
			So(l.Type, ShouldEqual, consts.TenantLedgerTypeDebitPurchase)
		})

		Convey("should fail pay if insufficient balance", func() {
			// Set balance to 5.00
			models.UserQuery.WithContext(ctx).Where(models.UserQuery.ID.Eq(buyer.ID)).Update(models.UserQuery.Balance, 500)

			form := &order_dto.OrderCreateForm{ContentID: cast.ToString(content.ID)}
			createRes, err := Order.Create(buyerCtx, form)
			So(err, ShouldBeNil)

			payForm := &order_dto.OrderPayForm{Method: "balance"}
			_, err = Order.Pay(buyerCtx, createRes.OrderID, payForm)
			So(err, ShouldNotBeNil)
			// Error should be QuotaExceeded or similar
		})
	})
}