package vehicle

import (
	"testing"
	"time"

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

func setupShortlistTestDB(t *testing.T) *gorm.DB {
	t.Helper()
	db, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{DisableForeignKeyConstraintWhenMigrating: true})
	require.NoError(t, err)
	require.NoError(t, db.AutoMigrate(&dao.Vehicle{}, &dao.Shortlist{}))
	global.GVA_DB = db
	t.Cleanup(func() { global.GVA_DB = nil })
	return db
}

func TestCheckVehicleShortlistExpiration(t *testing.T) {
	db := setupShortlistTestDB(t)
	vehicle := dao.Vehicle{PlateNumber: "TEST001", RFIDTag: "RFID001", VehicleTypeID: 1}
	require.NoError(t, db.Create(&vehicle).Error)
	service := &ShortlistService{}

	tests := []struct {
		name      string
		listType  string
		expiresAt *time.Time
		wantBlack bool
		wantWhite bool
	}{
		{name: "永久白名单", listType: "白名单", wantWhite: true},
		{name: "有效白名单", listType: "白名单", expiresAt: timePtr(time.Now().Add(time.Hour)), wantWhite: true},
		{name: "到期白名单", listType: "白名单", expiresAt: timePtr(time.Now()), wantWhite: false},
		{name: "过期白名单", listType: "白名单", expiresAt: timePtr(time.Now().Add(-time.Hour)), wantWhite: false},
		{name: "有效黑名单", listType: "黑名单", expiresAt: timePtr(time.Now().Add(time.Hour)), wantBlack: true},
		{name: "过期黑名单", listType: "黑名单", expiresAt: timePtr(time.Now().Add(-time.Hour)), wantBlack: false},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			require.NoError(t, db.Unscoped().Where("1 = 1").Delete(&dao.Shortlist{}).Error)
			require.NoError(t, db.Create(&dao.Shortlist{
				VehicleId: int(vehicle.ID), ListType: tt.listType, ExpirationTime: tt.expiresAt,
			}).Error)

			isBlack, isWhite := service.CheckVehicleShortlist(vehicle.PlateNumber, "")
			require.Equal(t, tt.wantBlack, isBlack)
			require.Equal(t, tt.wantWhite, isWhite)
		})
	}
}

func TestCheckVehicleShortlistBlackTakesPrecedence(t *testing.T) {
	db := setupShortlistTestDB(t)
	vehicle := dao.Vehicle{PlateNumber: "TEST002", RFIDTag: "RFID002", VehicleTypeID: 1}
	require.NoError(t, db.Create(&vehicle).Error)
	expiresAt := time.Now().Add(time.Hour)
	require.NoError(t, db.Create(&[]dao.Shortlist{
		{VehicleId: int(vehicle.ID), ListType: "白名单", ExpirationTime: &expiresAt},
		{VehicleId: int(vehicle.ID), ListType: "黑名单", ExpirationTime: &expiresAt},
	}).Error)

	isBlack, isWhite := (&ShortlistService{}).CheckVehicleShortlist("", vehicle.RFIDTag)
	require.True(t, isBlack)
	require.False(t, isWhite)
}

func timePtr(value time.Time) *time.Time {
	return &value
}