using System;
using System.Collections.Generic;
using Animancer;
using Logic;
using Logic.Action;
using MapWaterType = Logic.MapWaterType;
using Logic.AI;
using Logic.Audio;
using Logic.CrashSight;
using Logic.Multilingual;
using ParadoxNotion;
using RuntimeData;
using MapConfig = RuntimeData.MapConfig;
using Steamworks;
using TH1_Core.Events;
using TH1_Core.Managers;
using TH1_Logic.Action;
using TH1_Logic.Core;
using TH1_Logic.MatchConfig;
using TH1_Logic.Net;
using TH1_Logic.Steam;
using TH1_UI.View.Announce;
using TH1Resource;
using TMPro;
using Unity.VisualScripting;
using UnityEngine;
using UnityEngine.UI;

namespace TH1_UI.View.Outside
{

	public class UIOutsideSelectView : Base.View
	{
		[Header("按钮")]
		public Button CloseButton;
		public Button SettingButton;

		[Header("选择列表")]
		public List<Empire> CivForceList;
		public List<GameObject> PicList;
		public GameObject SelectAvatarPrefab;
		public GameObject SelectList;
		private List<UIOutsideSelectAvatarMono> _monoList;
		private UIOutsideSelectAvatarMono _randomAvatarMono;
		private Empire _selectEmpire;
		private bool _selectRandom;
		//暴露当前选中的阵营，供 Controller 在开始游戏时传给 Loading 界面
		public Empire SelectedEmpire => _selectEmpire;

		[Header("详细信息")]
		public RectTransform InfoGroup;
		public RectTransform CivBG;
		public TextMeshProUGUI ForceName;
		public TextMeshProUGUI CivName;
		public TextMeshProUGUI LeaderDesc;
		public TextMeshProUGUI EmpireDesc;
		public List<GameObject> StarList;
		public List<GameObject> GreyStarList;
		public GameObject SkillCircleGroup;
		public GameObject SkillCirclePrefab;
		public List<UIOutsideSelectSkillCircleMono> SkillCircleList;
		public GameObject RandomPanel;
		public AnimancerComponent RandomPanelAnimancer;


		[Header("中央立绘区")]
		public Image BG1;
		public Image BG2;
		public List<UIOutsideSelectForceGroupMono> ForceGroupList;

		[Header("子界面")]
		public UIOutsideSelectCheckPanelMono SelectCheckPanelMono;

		//关闭时执行的委托
		public ViDelegateAssisstant.Dele OnBtnCloseClick;

		//开始游戏时执行的委托(目前委托内容就是执行controller的Close())
		public ViDelegateAssisstant.Dele OnStartGame;

		// PlayerPrefs key for saving last selected empire
		private const string LAST_SELECTED_CIV_KEY = "LastSelectedCiv";
		private const string LAST_SELECTED_FORCE_KEY = "LastSelectedForce";
		// PlayerPrefs key for saving last selected map size in CREATIVE mode
		private const string LAST_MAP_SIZE_INDEX_KEY = "LastCreativeMapSizeIndex";

		protected override void OnInit()
		{
			base.OnInit();
			//清空List下的内容
			for(int i = SelectList.transform.childCount - 1;i >= 0;i --)
			{
				Transform child = SelectList.transform.GetChild(i);
				GameObject.Destroy(child.gameObject);
			}
			_monoList = new List<UIOutsideSelectAvatarMono>();
			foreach (var t in CivForceList)
			{
				if (!ContentGate.CanSelectEmpire(t)) continue;
				// TODO: 暂时屏蔽第四阵营（Indian/Satori），待正式上线后移除此判断
				//if (t.Civ == CivEnum.Indian) continue;
				
				var obj = Instantiate(SelectAvatarPrefab, SelectList.transform);
				var mono = obj.GetComponent<UIOutsideSelectAvatarMono>();
				if (mono == null) continue;
				mono.SetContent(t,OnAvatarClicked);
				_monoList.Add(mono);
			}
			CreateRandomAvatar();
			SetRandomPanelVisible(false, true);

			CloseButton.onClick.RemoveAllListeners();
			CloseButton.onClick.AddListener(() =>
			{
				OnBtnCloseClick?.Invoke();
			});

			//处理ChekPanel
			SelectCheckPanelMono.Init(OnStartClicked);
			SettingButton.onClick.RemoveAllListeners();
			SettingButton.onClick.AddListener(OnSettingClicked);



		}

		private void OnAvatarClicked(Empire playerEmpire)
		{
			if (!ContentGate.CanUseEmpire(playerEmpire)) return;
			_selectRandom = false;
			foreach(var t in _monoList)
				if(t.PlayerEmpire != playerEmpire)
					t.SetHide();
			SetRandomPanelVisible(false);
			SetCivForceInfo(playerEmpire);
		}

		private void OnRandomAvatarClicked(UIOutsideSelectAvatarMono randomMono)
		{
			_selectRandom = true;
			foreach(var t in _monoList)
				if(t != randomMono)
					t.SetHide();
			SelectCheckPanelMono?.SetPlayerEmpire(new Empire(CivEnum.Common, ForceEnum.Common), true);
			SetRandomPanelVisible(true);
		}



		public void Update()
		{

		}
		public void SetContent(ShowUIOutsideSelect evt)
		{
			if (_monoList.Count == 0) return;
			SelectCheckPanelMono.gameObject.SetActive(false) ;

			// Try to restore last selected empire
			Empire? lastSelectedEmpire = GetLastSelectedEmpire();
			UIOutsideSelectAvatarMono targetMono = null;

			if (lastSelectedEmpire.HasValue)
			{
				// Find the mono that matches the last selected empire
				foreach (var mono in _monoList)
				{
					if (mono.PlayerEmpire.Civ == lastSelectedEmpire.Value.Civ &&
					    mono.PlayerEmpire.Force == lastSelectedEmpire.Value.Force)
					{
						targetMono = mono;
						break;
					}
				}
			}

			// If no last selection found or not available, default to first
			if (targetMono == null)
			{
				targetMono = GetFirstSelectableAvatar();
				if (targetMono == null) return;
			}

			targetMono.Button.onClick.Invoke();
			SetCivForceInfo(targetMono.PlayerEmpire);
		}

		public void SetCivForceInfo(Empire  playerEmpire)
		{
			if (!ContentGate.CanUseEmpire(playerEmpire)) return;
			_selectRandom = false;
			_selectEmpire = playerEmpire;
			SelectCheckPanelMono?.SetPlayerEmpire(playerEmpire);
			if (!Table.Instance.PlayerDataAssets.GetPlayerInfo(playerEmpire.Civ, playerEmpire.Force, out var info)) return;
			//Step #1 设置文明基础文字信息
			MultilingualManager.Instance.SetUIText(ForceName,info.ForceName);
			MultilingualManager.Instance.SetUIText(CivName,info.CivName);
			LayoutRebuilder.ForceRebuildLayoutImmediate(CivBG);

			//Step #2 设置文明的难度情况
			var dif = info.Diff;
			var grey = 4 - dif;
			for(int i = 0;i < StarList.Count ; i++)
				StarList[i].SetActive(i < dif);
			for(int i = 0;i < GreyStarList.Count ; i++)
				GreyStarList[i].SetActive(i < grey);

			//Step #2 设置文明特色SkillGroup
			//清空SkillGroup
			for (int i = SkillCircleGroup.transform.childCount - 1; i >= 0; i--)
			{
				Transform child = SkillCircleGroup.transform.GetChild(i);
				child.gameObject.SetActive(false);
			}
			for (int i = SkillCircleGroup.transform.childCount; i < info.TechAtomList.Count; i++)
			{
				var pre = Instantiate(SkillCirclePrefab, SkillCircleGroup.transform);
				var mono = pre?.GetComponent<UIOutsideSelectSkillCircleMono>();
				if(mono == null)continue;
				SkillCircleList.Add(mono);
			}
			SkillCircleList = new List<UIOutsideSelectSkillCircleMono>();
			for (int i = 0; i < info.TechAtomList.Count; i++)
			{
				Transform child = SkillCircleGroup.transform.GetChild(i);
				if (child == null) break;
				child.gameObject.SetActive(true);
				var mono = child?.GetComponent<UIOutsideSelectSkillCircleMono>();
				if(mono == null)continue;
				SkillCircleList.Add(mono);
				mono.SetContent(playerEmpire,info.TechAtomList[i]);
			}

			//Step #3 设置文明基础文字信息
			MultilingualManager.Instance.SetUIText(EmpireDesc,info.EmpireDesc);
			MultilingualManager.Instance.SetUIText(LeaderDesc,info.LeaderDesc);
			//LayoutRebuilder.ForceRebuildLayoutImmediate(CivBG);
			//LayoutRebuilder.ForceRebuildLayoutImmediate(SkillCircleGroup.GetComponent<RectTransform>());

			LayoutRebuilder.ForceRebuildLayoutImmediate(InfoGroup);

			//Step #4 设置立绘
			foreach (var forceGroup in ForceGroupList)
			{

				if (forceGroup.Empire == playerEmpire)
				{
					forceGroup.gameObject.SetActive(true);
					BG1.color = info.Color;
					BG2.color = info.Color;
					foreach(var heroPack in forceGroup.HeroList)
						heroPack.SetContent();
				}
				else
					forceGroup.gameObject.SetActive(false);
			}


			//Step #5 播放对应音乐
			AudioManager.Instance.PlayMusic(info.MusicName,1f,1f,true);

		}

		//在Controller 调用Close的时候，会先调用这个closeview
		public void OnCloseView()
		{
		}

		public void OnSettingClicked()
		{
			SelectCheckPanelMono.Show();
		}

		public void OnStartClicked()
		{
			bool wasRandomSelected = _selectRandom;
			if (wasRandomSelected)
			{
				ApplyRandomSelectedEmpire();
			}
			if (!ContentGate.CanUseEmpire(_selectEmpire))
			{
				var targetMono = GetFirstSelectableAvatar();
				if (targetMono == null) return;
				SetCivForceInfo(targetMono.PlayerEmpire);
			}

			GameMode gameMode = SelectCheckPanelMono.GameMode.SelectedIndex switch
			{
				0 => GameMode.DOMINATION,
				1 => GameMode.PERFECT,
				_ => GameMode.CREATIVE
			};
			uint playerCount = SelectCheckPanelMono.PlayerCount.SelectedIndex + 2;
			uint mapSize;
			mapSize = SelectCheckPanelMono.MapSize.SelectedIndex switch
			{
				0 => 11,
				1 => 14,
				2 => 16,
				3 => 18,
				4 => 20,
				5 => 24,
				6 => 30,
				_ => 18
			};
			AIDifficult diff = SelectCheckPanelMono.Diff.SelectedIndex switch
			{
				0 => AIDifficult.EASY,
				1 => AIDifficult.NORMAL,
				2 => AIDifficult.HARD,
				_ => AIDifficult.LUNATIC
			};

			MapWaterType waterType = (MapWaterType)(SelectCheckPanelMono.Water != null
				? SelectCheckPanelMono.Water.SelectedIndex
				: 2); // default Pangea

			// domination => 2, perfect => 6, creative => custom win group
			uint matchConfigId = gameMode switch
			{
				GameMode.PERFECT => 6,
				GameMode.CREATIVE => SelectCheckPanelMono.GetSelectedCreativeMatchConfigId(),
				_ => 2 // DOMINATION
			};
			Main.Instance.MapConfig.ChangeByMapConfig(MatchConfigManager.Instance.GetMatchConfig(matchConfigId));
			Main.Instance.MapConfig.Id = matchConfigId;
			Main.Instance.MapConfig.GameMode = gameMode;
			Main.Instance.MapConfig.Width = mapSize;
			Main.Instance.MapConfig.Height = mapSize;
			Main.Instance.MapConfig.SetPlayerCount(playerCount, NetMode.Single);
			Main.Instance.MapConfig.AIDiff = diff;
			Main.Instance.MapConfig.WaterType = waterType;
			Main.Instance.MapConfig.DisableNearbySpawnPoints =
				gameMode == GameMode.CREATIVE && SelectCheckPanelMono.DisableNearbySpawnPoints;
			SelectCheckPanelMono.SaveDisableNearbySpawnPointsPreference();
			Main.Instance.MapConfig.SetSinglePlayerCiv(
				Table.Instance.TransCivEnumToCivId(_selectEmpire.Civ),
				Table.Instance.TransForceEnumToForceId(_selectEmpire.Force));
			SelectCheckPanelMono.PrepareAISettingsForStart(playerCount, gameMode == GameMode.CREATIVE);
			ApplyAISettingsToMapConfig(gameMode);

			// Save the selected empire for next time
			if (!wasRandomSelected)
			{
				SaveLastSelectedEmpire(_selectEmpire);
			}

			// CREATIVE模式下保存MapSize选择
			if (gameMode == GameMode.CREATIVE)
			{
				SaveLastMapSize(SelectCheckPanelMono.MapSize.SelectedIndex);
			}

			//设置好参数后，调用Controller的委托
			OnStartGame?.Invoke();

		}

		private void ApplyAISettingsToMapConfig(GameMode gameMode)
		{
			if (SelectCheckPanelMono == null || Main.Instance.MapConfig?.MultiCivs == null) return;

			int maxTeamId = Mathf.Max(1, (int)Main.Instance.MapConfig.PlayerCount);
			var selfSlot = Main.Instance.MapConfig.GetPlayerSlot(0, NetMode.Single);
			if (selfSlot != null)
			{
				selfSlot.TeamId = gameMode == GameMode.CREATIVE ? 1 : MapConfig.NoTeamId;
				selfSlot.IsAI = false;
				selfSlot.IsHostControlled = false;
				selfSlot.IsCivFixed = true;
			}

			foreach (var setting in SelectCheckPanelMono.AISettings)
			{
				var slot = Main.Instance.MapConfig.GetPlayerSlot(setting.SlotIndex, NetMode.Single);
				if (slot == null) continue;

				slot.Index = setting.SlotIndex;
				slot.MemberId = 0;
				slot.PlayerId = 0;
				slot.CivId = setting.IsRandom ? MapConfig.RandomCivId : setting.CivId;
				slot.ForceId = setting.IsRandom ? MapConfig.RandomForceId : setting.ForceId;
				slot.TeamId = gameMode == GameMode.CREATIVE
					? Mathf.Clamp(setting.TeamId, 1, maxTeamId)
					: MapConfig.NoTeamId;
				slot.IsCivFixed = !setting.IsRandom;
				slot.IsReady = false;
				slot.IsAI = !SelectCheckPanelMono.IsTestMode;
				slot.IsHostControlled = SelectCheckPanelMono.IsTestMode;
			}

			Main.Instance.MapConfig.ResolveRandomPlayerSlotCivsForStart(NetMode.Single);

			LogSingleCreativeTeamConfig(gameMode);
		}

		private void LogSingleCreativeTeamConfig(GameMode gameMode)
		{
			var config = Main.Instance.MapConfig;
			if (gameMode != GameMode.CREATIVE || config?.MultiCivs == null) return;

			var sb = new System.Text.StringBuilder();
			sb.Append("[SingleCreativeTeam] BeforeStart ");
			for (int i = 0; i < config.MultiCivs.Count; i++)
			{
				var slot = config.MultiCivs[i];
				if (slot == null) continue;
				if (i > 0) sb.Append(" | ");
				sb.Append($"slot={slot.Index},team={slot.TeamId},civ={slot.CivId},force={slot.ForceId},ai={slot.IsAI},hostControlled={slot.IsHostControlled}");
			}

			LogSystem.LogInfo(sb.ToString());
		}

		private void CreateRandomAvatar()
		{
			if (SelectAvatarPrefab == null || SelectList == null) return;

			var obj = Instantiate(SelectAvatarPrefab, SelectList.transform);
			_randomAvatarMono = obj.GetComponent<UIOutsideSelectAvatarMono>();
			if (_randomAvatarMono == null) return;

			var randomAvatar = Table.Instance?.PlayerDataAssets?.CommonPlayerAvatar;
			if (randomAvatar == null)
			{
				randomAvatar = TH1Resource.ResourceLoader.Load<Sprite>("TH1UI/Common/CommonAvatar/CommonAvatar");
			}
			var randomTitle = Table.Instance?.TextDataAssets?.OutsideSelectRandomEmpire;
			_randomAvatarMono.SetRandomContent(randomAvatar, randomTitle, OnRandomAvatarClicked);
			_monoList.Add(_randomAvatarMono);
		}

		private void ApplyRandomSelectedEmpire()
		{
			var candidates = new List<Empire>();
			foreach (var mono in _monoList)
			{
				if (mono == null || mono.IsRandom) continue;
				candidates.Add(mono.PlayerEmpire);
			}
			if (candidates.Count == 0) return;

			var index = UnityEngine.Random.Range(0, candidates.Count);
			SetCivForceInfo(candidates[index]);
		}

		private UIOutsideSelectAvatarMono GetFirstSelectableAvatar()
		{
			foreach (var mono in _monoList)
			{
				if (mono == null || mono.IsRandom) continue;
				if (ContentGate.CanUseEmpire(mono.PlayerEmpire)) return mono;
			}

			return null;
		}

		private void SetRandomPanelVisible(bool visible, bool immediate = false)
		{
			if (RandomPanel == null) return;

			var canvasGroup = RandomPanel.GetComponent<CanvasGroup>();
			if (immediate)
			{
				if (RandomPanelAnimancer != null) RandomPanelAnimancer.Stop();
				if (canvasGroup != null) canvasGroup.alpha = visible ? 1f : 0f;
				RandomPanel.SetActive(visible);
				return;
			}

			if (visible)
			{
				RandomPanel.SetActive(true);
				var clip = ResourceCache.Instance?.AnimCache?.UICommonPanelFadeIn;
				if (RandomPanelAnimancer != null && RandomPanelAnimancer.Animator != null && clip != null)
				{
					RandomPanelAnimancer.Play(clip);
				}
				else if (canvasGroup != null)
				{
					canvasGroup.alpha = 1f;
				}
				return;
			}

			if (!RandomPanel.activeSelf) return;

			var fadeOutClip = ResourceCache.Instance?.AnimCache?.UICommonPanelFadeOut;
			if (RandomPanelAnimancer != null && RandomPanelAnimancer.Animator != null && fadeOutClip != null)
			{
				var state = RandomPanelAnimancer.Play(fadeOutClip);
				state.Events.OnEnd = () =>
				{
					if (RandomPanel != null) RandomPanel.SetActive(false);
					state.Events.OnEnd = null;
				};
			}
			else
			{
				if (canvasGroup != null) canvasGroup.alpha = 0f;
				RandomPanel.SetActive(false);
			}
		}

		/// <summary>
		/// Save the last selected empire to PlayerPrefs
		/// </summary>
		private void SaveLastSelectedEmpire(Empire empire)
		{
			PlayerPrefs.SetInt(LAST_SELECTED_CIV_KEY, (int)empire.Civ);
			PlayerPrefs.SetInt(LAST_SELECTED_FORCE_KEY, (int)empire.Force);
			PlayerPrefs.Save();
		}

		/// <summary>
		/// Save the last selected map size index for CREATIVE mode
		/// </summary>
		private void SaveLastMapSize(uint mapSizeIndex)
		{
			PlayerPrefs.SetInt(LAST_MAP_SIZE_INDEX_KEY, (int)mapSizeIndex);
			PlayerPrefs.Save();
		}

		/// <summary>
		/// Get the last selected empire from PlayerPrefs
		/// </summary>
		private Empire? GetLastSelectedEmpire()
		{
			if (!PlayerPrefs.HasKey(LAST_SELECTED_CIV_KEY) || !PlayerPrefs.HasKey(LAST_SELECTED_FORCE_KEY))
				return null;

			int civValue = PlayerPrefs.GetInt(LAST_SELECTED_CIV_KEY);
			int forceValue = PlayerPrefs.GetInt(LAST_SELECTED_FORCE_KEY);

			// Validate the values are valid enums
			if (!Enum.IsDefined(typeof(CivEnum), civValue) || !Enum.IsDefined(typeof(ForceEnum), forceValue))
				return null;

			var empire = new Empire((CivEnum)civValue, (ForceEnum)forceValue);
			return ContentGate.CanUseEmpire(empire) ? empire : null;
		}

		public void CloseView()
		{
			AudioManager.Instance.StopMusic();
		}
	}

}