using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using NUnit.Framework;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;
using Vanguard.Api;
using Vanguard.Api.Contracts;
using Vanguard.App;
using Vanguard.Auth;
using Vanguard.Meta;
using Vanguard.Shared.Protocol;
using Vanguard.State;
using Vanguard.UI;
using BattleView = Vanguard.UI.BattleView;

namespace Vanguard.Tests
{
    public sealed class ClientSmokeTests
    {
        [Test]
        public void Client_Views_Build()
        {
            var config = new AppConfig();
            config.Load();

            var tokens = new TokenStore();
            var api = new ApiClient(config, tokens);
            var player = new PlayerState();
            var auth = new AuthService(api, tokens, player);
            var meta = new MetaService(api, player);

            var canvas = UiKit.CreateCanvas("Test Canvas");

            var login = new LoginView(canvas.transform, config, auth, () => { });
            login.Show("smoke");

            var lobby = new MetaView(
                canvas.transform, auth, player, () => { },
                () => { }, () => { }, () => { }, () => { }, () => { });
            var onboarding = new OnboardingView(
                canvas.transform, auth, meta, () => { }, () => { });
            var decks = new DeckBuilderView(
                canvas.transform, meta, auth, () => { }, _ => { }, _ => { });
            var queue = new QueueView(
                canvas.transform, meta, auth, () => { }, _ => { });
            var store = new StoreView(
                canvas.transform, meta, auth, player, () => { });
            var history = new HistoryView(
                canvas.transform, meta, auth, () => { });
            var battle = new BattleView(
                canvas.transform, meta, () => { });

            Assert.IsNotNull(GameObject.Find("LoginScreen"));
            Assert.IsTrue(Exists("MetaScreen"));
            Assert.IsTrue(Exists("OnboardingScreen"));
            Assert.IsTrue(Exists("DeckBuilderScreen"));
            Assert.IsTrue(Exists("StoreScreen"));
            Assert.IsTrue(Exists("HistoryScreen"));
            Assert.IsTrue(Exists("ReplayScreen"));
            Assert.IsTrue(Exists("QueueScreen"));
            Assert.IsTrue(Exists("BattleScreen"));

            Assert.IsNotNull(
                Resources.Load<Texture2D>("CardArt/td01_005"),
                "TD01 card art is not imported");

            var artGo = new GameObject("ArtProbe", typeof(RectTransform), typeof(Image));
            var artImage = artGo.GetComponent<Image>();
            CardImageService.Apply(artImage, "td01_005", null);
            Assert.IsNotNull(artImage.sprite, "CardImageService did not load real card art");
            Object.DestroyImmediate(artGo);

            // После смены сцены старые views не должны реагировать на PlayerState.
            lobby.Dispose();
            store.Dispose();
            player.Apply(new MeResponse
            {
                UserName = "after-dispose",
                Gold = 10,
                Dust = 2,
                Tokens = 1,
            });

            Cleanup();
        }

        [Test]
        public void Localization_Translates_Static_And_Dynamic_Strings()
        {
            Loc.SetLanguage(UiLanguage.Ru);
            Assert.AreEqual("Коллекция", Loc.Translate("Коллекция"));

            Loc.SetLanguage(UiLanguage.En);
            Assert.AreEqual("Collection", Loc.Translate("Коллекция"));
            Assert.AreEqual("Grade: all", Loc.Translate("Ранг: все"));
            Assert.AreEqual("Cards in collection: 12", Loc.Translate("Карт в коллекции: 12"));
            Assert.AreEqual("Victory!", Loc.Translate("Победа!"));
            Assert.AreEqual("Sentinel: yes · Boost: no", Loc.Translate("Sentinel: да · Boost: нет"));

            Loc.SetLanguage(UiLanguage.Ru);

            var go = new GameObject("LocalizedLabel", typeof(RectTransform), typeof(Text));
            var label = go.GetComponent<Text>();
            var localized = go.AddComponent<LocalizedText>();
            localized.Initialize("Коллекция");
            Assert.AreEqual("Коллекция", label.text);

            Loc.SetLanguage(UiLanguage.En);
            Assert.AreEqual("Collection", label.text);

            label.text = "Магазин";
            localized.ApplyNow();
            Assert.AreEqual("Store", label.text);

            Loc.SetLanguage(UiLanguage.Ru);
            Assert.AreEqual("Магазин", label.text);
            Object.DestroyImmediate(go);
        }

        [Test]
        public void Battle_Renders_Damage_And_Rested_Cards()
        {
            var config = new AppConfig();
            config.Load();
            var tokens = new TokenStore();
            var api = new ApiClient(config, tokens);
            var player = new PlayerState();
            var auth = new AuthService(api, tokens, player);
            var meta = new MetaService(api, player);
            var canvas = UiKit.CreateCanvas("Test Canvas");

            var battle = new BattleView(canvas.transform, meta, () => { });
            var screen = Resources.FindObjectsOfTypeAll<GameObject>()
                .First(go => go.name == "BattleScreen");
            screen.SetActive(true);

            CardView Card(string id, int instance, bool rested = false) => new CardView
            {
                PrintingId = id,
                InstanceId = instance,
                Rested = rested,
                FaceUp = true,
                Power = 8000,
                BasePower = 8000,
                Critical = 1,
                BaseCritical = 1,
            };

            var self = new PlayerView
            {
                Index = 0,
                Name = "Me",
                Vanguard = Card("BT01/001EN", 1),
                RearGuards = new CardView?[5],
                Hand = new List<CardView> { Card("BT01/042EN", 2) },
                Soul = new List<CardView> { Card("BT01/003EN", 3) },
                FaceDownDamage = 2,
                FaceUpDamage = new List<CardView> { Card("BT01/056EN", 4) },
                DeckCount = 40,
                Drop = new List<CardView>(),
            };
            self.RearGuards[3] = Card("BT01/042EN", 5, rested: true);

            var opponent = new PlayerView
            {
                Index = 1,
                Name = "Opponent",
                Vanguard = Card("BT01/001EN", 6),
                RearGuards = new CardView?[5],
                Hand = new List<CardView>(),
                Soul = new List<CardView>(),
                FaceDownDamage = 1,
                FaceUpDamage = new List<CardView>(),
                DeckCount = 40,
                Drop = new List<CardView>(),
            };

            var match = new MatchView
            {
                MatchId = "render-test",
                You = 0,
                ActivePlayer = 0,
                Phase = GamePhase.Main,
                Players = new List<PlayerView> { self, opponent },
                Battle = new Vanguard.Shared.Protocol.BattleView
                {
                    GuardCards = new List<CardView> { Card("BT01/011EN", 7) },
                },
                Clock = new ClockView(),
                LegalIntents = new List<IntentPayload>(),
            };

            typeof(BattleView)
                .GetField("_view", BindingFlags.Instance | BindingFlags.NonPublic)!
                .SetValue(battle, match);
            typeof(BattleView)
                .GetMethod("Render", BindingFlags.Instance | BindingFlags.NonPublic)!
                .Invoke(battle, null);

            Assert.IsTrue(Exists("DamageZone"));
            Assert.IsTrue(Exists("Damage_0"));
            Assert.IsTrue(Exists("Damage_1"));
            Assert.IsTrue(Exists("Damage_2"));
            Assert.IsTrue(Exists("Guard_7"));
            Assert.IsTrue(Exists("Card_R4"));
            var hasSidewaysCard = Resources.FindObjectsOfTypeAll<GameObject>()
                .Where(go => go.name == "Card_R4")
                .Any(go =>
                {
                    var angle = go.transform.localEulerAngles.z;
                    return Mathf.Abs(Mathf.DeltaAngle(angle, 90f)) < 1f
                        || Mathf.Abs(Mathf.DeltaAngle(angle, -90f)) < 1f;
                });
            Assert.IsTrue(hasSidewaysCard, "Rested card was not turned sideways");

            Cleanup();
        }

        private static bool Exists(string name) =>
            Resources.FindObjectsOfTypeAll<GameObject>().Any(go => go.name == name);

        private static void Cleanup()
        {
            var canvas = GameObject.Find("Test Canvas");
            if (canvas != null)
                Object.DestroyImmediate(canvas);

            var eventSystem = Object.FindAnyObjectByType<EventSystem>();
            if (eventSystem != null)
                Object.DestroyImmediate(eventSystem.gameObject);
        }
    }
}