using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using RPGCreationKit;
using UnityEngine.SceneManagement;
using System.IO;
using RPGCreationKit.Player;
using System;
using RPGCreationKit.CellsSystem;

namespace RPGCreationKit.SaveSystem
{
	public class SaveSystemManager : MonoBehaviour
	{
		public static SaveSystemManager instance;
		public static bool CAN_SAVE = true;
        [SerializeField] private GameObject EnvironmentManager;

		private void Awake()
		{
			if (instance == null)
			{
				instance = this;
				DontDestroyOnLoad(this.gameObject);
			}
			else
				Destroy(this.gameObject);
		}

		[SerializeField] public SaveFile saveFile;
		public FileInfo saveInfo;

		public void LoadSaveGame(FileInfo _info, SaveFile _file)
		{
			saveFile.LootingPointsData.allLootingPoints.Clear();
			saveFile.ItemsInWorldData.allItemsInWorld.Clear();

			saveInfo = _info;
			saveFile = _file;

			LoadingScreenInfo.whatToLoadPriority.Add("_PersistentReferences_");
			LoadingScreenInfo.whatToLoad.Add("_WorldLoader_");

			SceneManager.LoadScene("_LoadingScreen_");
		}

		public void SaveAndOverwrite(FileInfo _info, SaveFile _saveFile)
		{
			saveInfo = _info;

			System.DateTime date = System.DateTime.Now;
			// Fill the relevant save info

			// SaveFileData
			saveFile.SaveFileData.saveType = RCKSettings.SAVE_TYPE_VERSION;
			saveFile.SaveFileData.fileVersion = RCKSettings.FILE_SAVE_VERSION;
			saveFile.SaveFileData.saveNumber++;
			saveFile.SaveFileData.saveDate = date.ToShortDateString() + " - " + date.Hour + ":" + date.Minute;


			// PlayerData
			//saveFile.PlayerData.playerName = name;
			//saveFile.PlayerData.playerLevel = level;
			//saveFile.PlayerData.playerSex = sex;
			saveFile.PlayerData.playerLocation = WorldManager.instance.currentCenterCell.cellName;
			saveFile.PlayerData.playerWorldspaceID = WorldManager.instance.currentWorldspace.worldSpaceID;
			saveFile.PlayerData.playerCellID = WorldManager.instance.currentCenterCell.ID;
			saveFile.PlayerData.playerPos = RckPlayer.instance.transform.position;
			saveFile.PlayerData.playerRot = RckPlayer.instance.transform.rotation;
			saveFile.PlayerData.mouseRotX = RckPlayer.instance.mouseLook.xRotation;
			saveFile.PlayerData.playerCrouched = RckPlayer.instance.IsCrouching;
			saveFile.PlayerData.weaponDrawn = PlayerCombat.instance.weaponDrawn;
			saveFile.PlayerData.isInThirdPerson = RckPlayer.instance.isInThirdPerson;

			saveFile.PlayerData.playerAttributes = EntityAttributes.PlayerAttributes.ToSaveData();
			saveFile.PlayerData.playerInventory = Inventory.PlayerInventory.ToSaveData();
			saveFile.PlayerData.spellsKnowledge = SpellsKnowledge.Player.ToSaveData();

			// Environment
            if (EnvironmentManager == null) {
                EnvironmentManager = GameObject.Find("EnvironmentManager");
                Debug.Log("EnvironmentManager property has been filled");
            } else {
                Debug.Log("EnvironmentManager = -"+EnvironmentManager+"-");
            }
			SunLightManager EnviroMan = EnvironmentManager.GetComponent<SunLightManager>();
			saveFile.Environment.TimeOfDay = EnviroMan.TimeOfDay;
			saveFile.Environment.Density = EnviroMan.Density;
			saveFile.Environment.Exposure = EnviroMan.Exposure;
			saveFile.Environment.Stars = EnviroMan.Stars;
			saveFile.Environment.Year = EnviroMan.Year;
			saveFile.Environment.Month = EnviroMan.Month;
			saveFile.Environment.Day = EnviroMan.Day;


			// Save all factions
			saveFile.PlayerData.playerFactions.Clear();
			for (int i = 0; i < RckPlayer.instance.belongsToFactions.Count; i++)
				saveFile.PlayerData.playerFactions.Add(RckPlayer.instance.belongsToFactions[i].ID);

			// Save all quests
			saveFile.QuestData = QuestManager.instance.ToSaveData();

			// Save all touched items and ai
			foreach (KeyValuePair<string, CellInformation> cellInfo in CellInformation.activeCells)
			{
				Debug.Log(cellInfo.Value.cell.ID);
				cellInfo.Value.SaveTouchedItems();

				// Save AI
				cellInfo.Value.SaveRckAI();
			}

			string jsonFile = JsonUtility.ToJson(saveFile, RCKSettings.JSON_PRETTY_PRINT);
			string path = _info.FullName;
			File.WriteAllText(path, jsonFile);

			TakeScreenShot(path);
		}

		public void SaveOnNewFile()
		{
			System.DateTime date = System.DateTime.Now;
			// Fill the relevant save info

			// SaveFileData
			saveFile.SaveFileData.saveType = RCKSettings.SAVE_TYPE_VERSION;
			saveFile.SaveFileData.fileVersion = RCKSettings.FILE_SAVE_VERSION;
			saveFile.SaveFileData.saveNumber++;
			saveFile.SaveFileData.saveDate = date.ToShortDateString() + " - " + date.Hour + ":" + date.Minute;


			// PlayerData
			//saveFile.PlayerData.playerName = name;
			//saveFile.PlayerData.playerLevel = level;
			//saveFile.PlayerData.playerSex = sex;
			saveFile.PlayerData.playerLocation = WorldManager.instance.currentCenterCell.cellName;
			saveFile.PlayerData.playerWorldspaceID = WorldManager.instance.currentWorldspace.worldSpaceID;
			saveFile.PlayerData.playerCellID = WorldManager.instance.currentCenterCell.ID;
			saveFile.PlayerData.playerPos = RckPlayer.instance.transform.position;
			saveFile.PlayerData.playerRot = RckPlayer.instance.transform.rotation;
			saveFile.PlayerData.mouseRotX = RckPlayer.instance.mouseLook.xRotation;
			saveFile.PlayerData.playerCrouched = RckPlayer.instance.IsCrouching;
			saveFile.PlayerData.weaponDrawn = PlayerCombat.instance.weaponDrawn;
			saveFile.PlayerData.isInThirdPerson = RckPlayer.instance.isInThirdPerson;

			saveFile.PlayerData.playerAttributes = EntityAttributes.PlayerAttributes.ToSaveData();
			saveFile.PlayerData.playerInventory = Inventory.PlayerInventory.ToSaveData();
			saveFile.PlayerData.spellsKnowledge = SpellsKnowledge.Player.ToSaveData();

			// Environment
            if (EnvironmentManager == null) {
                EnvironmentManager = GameObject.Find("EnvironmentManager");
                Debug.Log("EnvironmentManager property has been filled");
            } else {
                Debug.Log("EnvironmentManager = -"+EnvironmentManager+"-");
            }
			SunLightManager EnviroMan = EnvironmentManager.GetComponent<SunLightManager>();
			saveFile.Environment.TimeOfDay = EnviroMan.TimeOfDay;
			saveFile.Environment.Density = EnviroMan.Density;
			saveFile.Environment.Exposure = EnviroMan.Exposure;
			saveFile.Environment.Stars = EnviroMan.Stars;

			// Save all factions
			saveFile.PlayerData.playerFactions.Clear();
			for (int i = 0; i < RckPlayer.instance.belongsToFactions.Count; i++)
				saveFile.PlayerData.playerFactions.Add(RckPlayer.instance.belongsToFactions[i].ID);


			// Save all quests
			saveFile.QuestData = QuestManager.instance.ToSaveData();

			// Save all touched items and ai
			foreach(KeyValuePair<string, CellInformation> cellInfo in CellInformation.activeCells)
			{
				cellInfo.Value.SaveTouchedItems();

				// Save AI
				cellInfo.Value.SaveRckAI();
			}

			string jsonFile = JsonUtility.ToJson(saveFile, RCKSettings.JSON_PRETTY_PRINT);
			string path = saveInfo.FullName;

			uint add = saveFile.SaveFileData.saveNumber;
			while (File.Exists(path))
			{
				add++;
				path = saveInfo.FullName;
				path = saveInfo.FullName.Substring(0, saveInfo.FullName.IndexOf('_'));
				path += "_ " + add.ToString();
				path += ".json";
			}

			File.WriteAllText(path, jsonFile);

			// Save screenshot
			TakeScreenShot(path);
		}

		public Savegame CreateNewCharacter(string _name, bool _gender, string _raceID, FaceBlendshapesSaveData _faceData, int _hairType, int _eyesType)
		{
			Savegame savegame = SaveSystemManager.instance.gameObject.AddComponent<Savegame>();

			string path = System.Environment.GetFolderPath(System.Environment.SpecialFolder.MyDocuments)+@"\My Games\Firstborn\Saves";

			if (!Directory.Exists(path))
				Directory.CreateDirectory(System.Environment.GetFolderPath(System.Environment.SpecialFolder.MyDocuments)+@"\My Games\Firstborn\Saves");

			// Get all files

			SaveFile saveFile = new SaveFile();

			path = System.Environment.GetFolderPath(System.Environment.SpecialFolder.MyDocuments)+@"\My Games\Firstborn\Saves\" + _name + "_";
			int add = 0;

			if (File.Exists(path))
			{
				do
				{
					add++;
					path = path.Substring(0, path.IndexOf('_'));
					path += "_ " + add.ToString();
					path += ".json";
				} while (File.Exists(path));
			}
			else
				path += ".json";

			FileInfo saveInfo = new FileInfo(path);

			System.DateTime date = System.DateTime.Now;
			// Fill the relevant save info

			// SaveFileData
			saveFile.SaveFileData.saveType = RCKSettings.SAVE_TYPE_VERSION;
			saveFile.SaveFileData.fileVersion = RCKSettings.FILE_SAVE_VERSION;
			saveFile.SaveFileData.saveNumber++;
			saveFile.SaveFileData.saveDate = date.ToShortDateString() + " - " + date.Hour + ":" + date.Minute;


			// PlayerData
			saveFile.PlayerData.playerName = _name;
			saveFile.PlayerData.playerRace = _raceID;
			saveFile.PlayerData.playerLevel = RCKSettings.RCK_NEW_STARTING_LEVEL;
			saveFile.PlayerData.playerSex = _gender;
			saveFile.PlayerData.hairType = _hairType;
			saveFile.PlayerData.eyesType = _eyesType;
			saveFile.PlayerData.playerLocation = RCKSettings.RCK_NEW_STARTING_LOCATION;
			saveFile.PlayerData.playerWorldspaceID = RCKSettings.RCK_NEW_STARTING_WORLDSPACEID;
			saveFile.PlayerData.playerCellID = RCKSettings.RCK_NEW_STARTING_CELLID;
			saveFile.PlayerData.playerPos = RCKSettings.RCK_NEW_STARTING_POS;
			saveFile.PlayerData.playerRot = Quaternion.Euler(RCKSettings.RCK_NEW_STARTING_ROT);

			/*
			saveFile.PlayerData.mouseRotX = RckPlayer.instance.mouseLook.xRotation;
			saveFile.PlayerData.playerCrouched = RckPlayer.instance.IsCrouching;
			saveFile.PlayerData.weaponDrawn = PlayerCombat.instance.weaponDrawn;

			saveFile.PlayerData.playerAttributes = EntityAttributes.PlayerAttributes.ToSaveData();
			saveFile.PlayerData.playerInventory = Inventory.PlayerInventory.ToSaveData();


			// Save all quests
			saveFile.QuestData = QuestManager.instance.ToSaveData();

			// Save all touched items and ai
			foreach (KeyValuePair<string, CellInformation> cellInfo in CellInformation.activeCells)
			{
				cellInfo.Value.SaveTouchedItems();

				// Save AI
				cellInfo.Value.SaveRckAI();
			}

			*/

			saveFile.PlayerData.faceData = _faceData;

			string jsonFile = JsonUtility.ToJson(saveFile, RCKSettings.JSON_PRETTY_PRINT);

			File.WriteAllText(path, jsonFile);

			savegame.saveFile = saveFile;
			savegame.fileInfo = saveInfo;

			return savegame;
		}

		public void TakeScreenShot(string _savePath)
		{
			Camera mainCamera = null;

			mainCamera = (RckPlayer.instance.isInThirdPerson) ? RckPlayer.instance.tpsCamera : RckPlayer.instance.weaponCamera;

			// Let FPS camera render also the first person
			if(!RckPlayer.instance.isInThirdPerson)
				mainCamera.cullingMask |= 1 << RCKLayers.FirstPerson;

			RenderTexture rt = new RenderTexture(470, 250, 24);
			mainCamera.targetTexture = rt;
			Texture2D screenShot = new Texture2D(470, 250, TextureFormat.RGB24, false);
			mainCamera.Render();
			RenderTexture.active = rt;
			screenShot.ReadPixels(new Rect(0, 0, 470, 250), 0, 0);
			mainCamera.targetTexture = null;
			RenderTexture.active = null; // JC: added to avoid errors
			Destroy(rt);
			byte[] bytes = screenShot.EncodeToPNG();
			string screenPath = _savePath.Substring(0, _savePath.IndexOf('.'));
			screenPath += ".png";
			System.IO.File.WriteAllBytes(screenPath, bytes);

			// Restore culling mask
			if (!RckPlayer.instance.isInThirdPerson)
				mainCamera.cullingMask &= ~(1 << RCKLayers.FirstPerson);
		}
	}
}