package system

import (
	"fmt"
	"testing"
	"time"

	"github.com/glebarez/sqlite"
	"github.com/stretchr/testify/require"
	"gorm.io/gorm"
	"wails-app/internal/dao"
	"wails-app/internal/global"
)

func setupDashboardTest(t *testing.T) {
	t.Helper()
	dsn := fmt.Sprintf("file:dashboard-%d?mode=memory&cache=shared", time.Now().UnixNano())
	db, err := gorm.Open(sqlite.Open(dsn), &gorm.Config{})
	require.NoError(t, err)
	sqlDB, err := db.DB()
	require.NoError(t, err)
	t.Cleanup(func() {
		_ = sqlDB.Close()
		if global.GVA_DB == db {
			global.GVA_DB = nil
		}
	})
	global.GVA_DB = db
	require.NoError(t, db.AutoMigrate(
		&dao.ParkingLot{}, &dao.VehicleRecord{}, &dao.PaymentRecord{}, &dao.Channel{}, &dao.UHFReader{},
	))
}

func TestDashboardUsesActiveParkingLotOccupancy(t *testing.T) {
	setupDashboardTest(t)
	activeLot := &dao.ParkingLot{LotCode: "ACTIVE", LotName: "有效停车场", Capacity: 80, Occupied: 1, Available: 79}
	require.NoError(t, global.GVA_DB.Create(activeLot).Error)
	deletedLot := &dao.ParkingLot{LotCode: "DELETED", LotName: "已删除停车场", Capacity: 20, Occupied: 5, Available: 15}
	require.NoError(t, global.GVA_DB.Create(deletedLot).Error)
	require.NoError(t, global.GVA_DB.Delete(deletedLot).Error)
	require.NoError(t, global.GVA_DB.Create(&dao.VehicleRecord{
		PlateNumber: "ORPHAN", ParkingLotID: deletedLot.ID, EntryTime: time.Now(), PaymentStatus: "unpaid",
	}).Error)

	data, err := (&DashboardService{}).GetMonitorData()
	require.NoError(t, err)
	require.EqualValues(t, 80, data.TotalSpaces)
	require.EqualValues(t, 1, data.UsedSpaces)
	require.EqualValues(t, 1, data.InPark)
}