using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using SiegeSong;

namespace SiegeSong 
{
    public class SaveFileLoader : MonoBehaviour
    {
        public GameObject PlayerTracker;

        public InstanceManager InstanceManager;
        public RuntimeManager RuntimeManager;

        public SaveFile ActiveSaveFile;
        public MetaData ActiveSaveFileMeta;
        public string ActiveSaveFileLocation;

        private float StartingPositionX = 106.979240417480470f;
        private float StartingPositionY = 060.595188140869140f;
        private float StartingPositionZ = 292.302947998046900f;

        private float StartingRotationX = 007.244431018829346f;
        private float StartingRotationY = 291.974426269531270f;
        private float StartingRotationZ = 002.719870090484619f;

        private int[] StartingPlayerInventoryItemIDs = new int[1] { 3 };
        private int[] StartingPlayerInventoryItemQuantities = new int[1] { 1 };
        private int[] StartingPlayerActiveInventoryItemIDs = new int[1] { 3 };

        private int StartingMinute = 30;
        private int StartingHour = 9;
        private int StartingDay = 1;
        private int StartingYear = 1136;
        private WaitForEndOfFrame waitForEndOfFrame = new WaitForEndOfFrame();

        public string DirectoryName = "SaveGameData";

        public MetaData[] GetSaveFilesMetaData()
        {
            if (!System.IO.Directory.Exists($"{Application.persistentDataPath.Replace("/", "\\")}\\{DirectoryName}\\"))
                System.IO.Directory.CreateDirectory($"{Application.persistentDataPath.Replace("/", "\\")}\\{DirectoryName}\\");

            var metaDataList = new List<MetaData>();
            var filePaths = System.IO.Directory.GetFiles($"{Application.persistentDataPath.Replace("/", "\\")}\\{DirectoryName}\\");
            for (var i = 0; i < filePaths.Length; i++)
            {
                var filePath = filePaths[i];
                if (filePath.EndsWith(".sngm"))
                {
                    var fileMetaData = JsonUtility.FromJson<MetaData>(System.IO.File.ReadAllText(filePath));
                    metaDataList.Add(fileMetaData);
                }
            }
            return metaDataList.ToArray();
        }

        public void SaveGameFile(string overwrittenFilePath = "")
        {
            if (!System.IO.Directory.Exists($"{Application.persistentDataPath.Replace("/", "\\")}\\{DirectoryName}\\"))
                System.IO.Directory.CreateDirectory($"{Application.persistentDataPath.Replace("/", "\\")}\\{DirectoryName}\\");

            if (ActiveSaveFileMeta == null)
                ActiveSaveFileMeta = new MetaData();
            if (ActiveSaveFile == null)
                ActiveSaveFile = new SaveFile();

            var playerFriendlyFullName = "";
            var actorList = new List<Statistics>();
            for (var i = 0; i < InstanceManager.Instances.Length; i++)
            {
                var instance = InstanceManager.Instances[i];
                var instanceID = InstanceManager.InstanceIDs[i];
                if (instanceID == InstanceManager.CurrentPlayerInstanceID)
                {
                    var actor = instance.GetComponent<StatisticsManager>();
                    actorList.Add(actor.Stats);
                    playerFriendlyFullName = $"{actor.Stats.FirstName} {actor.Stats.LastName}";
                    ActiveSaveFileMeta.PlayerFullName = playerFriendlyFullName;
                    ActiveSaveFileMeta.PlayerLevel = actor.Stats.Level;
                    ActiveSaveFileMeta.PlayerActiveQuestFriendlyName = "None";
                    ActiveSaveFileMeta.ScreenWidth = Screen.width; 
                    ActiveSaveFileMeta.ScreenHeight = Screen.height;
                }
            }
            ActiveSaveFile.Actors = actorList;

            //ActiveSaveFile.PreviewImage;

            var systemDateTime = System.DateTime.Now;
            ActiveSaveFileMeta.LastPlayedOn = $"{(systemDateTime.Hour > 12 ? $"{(systemDateTime.Hour - (systemDateTime.Hour == 12 ? 0 : 12)).ToString("D2")}:{systemDateTime.Minute.ToString("D2")}{(systemDateTime.Hour > 12 ? "PM" : "AM")}" : $"{systemDateTime.Hour.ToString("D2")}:{systemDateTime.Minute.ToString("D2")}{(systemDateTime.Hour > 12 ? "PM" : "AM")}")} {systemDateTime.Day.ToString("D2")}/{systemDateTime.Month.ToString("D2")}/{systemDateTime.Year}";
            ActiveSaveFileMeta.InGameDate = $"{(RuntimeManager.Calendar.Hour > 12 ? $"{(RuntimeManager.Calendar.Hour - (systemDateTime.Hour == 12 ? 0 : 12)).ToString("D2")}:{RuntimeManager.Calendar.Minute.ToString("D2")}{(systemDateTime.Hour > 12 ? "PM" : "AM")}" : $"{RuntimeManager.Calendar.Hour.ToString("D2")}:{RuntimeManager.Calendar.Minute.ToString("D2")}{(systemDateTime.Hour > 12 ? "PM" : "AM")}")} {RuntimeManager.Calendar.Day}/{RuntimeManager.Calendar.Month.ToString("D2")}/{RuntimeManager.Calendar.Year}";

            ActiveSaveFile.Year = RuntimeManager.Calendar.Year;
            ActiveSaveFile.Day = RuntimeManager.Calendar.Day;
            ActiveSaveFile.Minute = RuntimeManager.Calendar.Minute;
            ActiveSaveFile.Hour = RuntimeManager.Calendar.Hour;

            if (!string.IsNullOrWhiteSpace(overwrittenFilePath))
            {
                OutputScreenCapture($"{overwrittenFilePath.Replace("/", "\\")}.png");
                System.IO.File.WriteAllText($"{overwrittenFilePath.Replace("/", "\\")}.ssng", JsonUtility.ToJson(ActiveSaveFile));
                System.IO.File.WriteAllText($"{overwrittenFilePath.Replace("/", "\\")}.sngm", JsonUtility.ToJson(ActiveSaveFileMeta));
            }
            else
            {
                ActiveSaveFileLocation = $"{Application.persistentDataPath}/{DirectoryName}/{ActiveSaveFileMeta.PlayerFullName.Replace(" ", "_")}";
                var saveFileNameSuffix = "00001";
                var i = 1;
                while (System.IO.File.Exists($"{Application.persistentDataPath.Replace("/", "\\")}\\{DirectoryName}\\{ActiveSaveFileMeta.PlayerFullName.Replace(" ", "_")}_{saveFileNameSuffix}.sngm"))
                {
                    i++;
                    saveFileNameSuffix = i.ToString("D5");
                }
                ActiveSaveFileMeta.FileNameSuffix = saveFileNameSuffix;
                ActiveSaveFileLocation = $"{Application.persistentDataPath}/{DirectoryName}/{ActiveSaveFileMeta.PlayerFullName.Replace(" ", "_")}_{saveFileNameSuffix}";
                OutputScreenCapture($"{ActiveSaveFileLocation.Replace("/", "\\")}.png");
                ActiveSaveFileMeta.Title = $"{playerFriendlyFullName} - Save Game {i}";
                System.IO.File.WriteAllText($"{ActiveSaveFileLocation.Replace("/", "\\")}.ssng", JsonUtility.ToJson(ActiveSaveFile));
                System.IO.File.WriteAllText($"{ActiveSaveFileLocation.Replace("/", "\\")}.sngm", JsonUtility.ToJson(ActiveSaveFileMeta));
            }
        }

        public void LoadGameFile()
        {
            RuntimeManager.DePopulateReferences();
            InstanceManager.ClearAndUnload();
            //RuntimeManager.ClearAndUnload();

            ActiveSaveFile = JsonUtility.FromJson<SaveFile>(System.IO.File.ReadAllText($"{ActiveSaveFileLocation.Replace("/", "\\")}.ssng"));
            GameObject instance = new GameObject();
            foreach (var stats in ActiveSaveFile.Actors)
            {
                for(var i = 0; i < InstanceManager.SpeciesDefinitionsContainer.transform.childCount; i++)
                {
                    var species = InstanceManager.SpeciesDefinitionsContainer.transform.GetChild(i);
                    if (species.gameObject.name == InstanceManager.HumanSpeciesKey)
                        instance = GameObject.Instantiate(species).gameObject;
                }

                if (instance.GetComponent<StatisticsManager>() == null)
                    instance.AddComponent<StatisticsManager>();

                var actor = instance.GetComponent<StatisticsManager>();

                if (actor.Stats == null)
                    actor.Stats = new Statistics();

                if (!instance.active)
                    instance.active = true;

                if (stats.IsPlayer)
                {
                    for (var j = 0; j < instance.transform.childCount; j++)
                    {
                        if (instance.transform.GetChild(j).name == "PlayerAgent")
                        {
                            instance.transform.GetChild(j).gameObject.active = true;

                            PlayerTracker.transform.parent = instance.transform;
                        }
                    }
                }

                actor.Stats = stats;
                instance.transform.eulerAngles = new Vector3(stats.RotationX, stats.RotationY, stats.RotationZ);
                instance.transform.position = new Vector3(stats.LocationX, stats.LocationY, stats.LocationZ);

                for (var i = 0; i < stats.InventoryItemIDs.Count; i++)
                {
                    actor.Inventory.SelectedItemID = stats.InventoryItemIDs[i];
                    actor.Inventory.SelectedAmount = stats.InventoryItemQuantities[i];
                    actor.Inventory.AddItem();
                    actor.Inventory.SelectedItemID = 0;
                    actor.Inventory.SelectedAmount = 0;
                    actor.Inventory.SelectedItemIndex = 0;
                }
                foreach (var itemId in stats.ActiveInventoryItemIDs)
                {
                    if (actor.Inventory.GetItemByID(itemId).GetComponent<Equipable>() != null)
                        actor.Inventory.EquipmentManager.AddEquipmentToSlots(actor.Inventory.GetItemByID(itemId));
                }
                actor.Inventory.ApparrelManager.CurrentlyActiveIDs = stats.ActiveInventoryItemIDs.ToArray();
                actor.Inventory.ApparrelManager.UpdateApparrel();


                actor.Stats.InstanceID = InstanceManager.GenerateInstanceID();
                instance.gameObject.name = $"{actor.Stats.FirstName} {actor.Stats.LastName}";
                InstanceManager.AddInstance(actor.Stats.InstanceID, instance);
                if (stats.IsPlayer)
                {
                    InstanceManager.CurrentPlayerInstanceID = actor.Stats.InstanceID;
                    RuntimeManager.PlayerInstance = instance;
                }
            }

            RuntimeManager.Calendar.SetDateTime(ActiveSaveFile.Minute, ActiveSaveFile.Hour, ActiveSaveFile.Day, ActiveSaveFile.Year);
            RuntimeManager.PopulateReferences();
        }

        public void RunNewGameSetup()
        {
            ActiveSaveFile = new SaveFile();

            var playerInstance = new GameObject();

            for (var i = 0; i < InstanceManager.SpeciesDefinitionsContainer.transform.childCount; i++)
            {
                var species = InstanceManager.SpeciesDefinitionsContainer.transform.GetChild(i);
                if (species.gameObject.name == InstanceManager.HumanSpeciesKey)
                    playerInstance = GameObject.Instantiate(species).gameObject;
            }

            var actor = playerInstance.GetComponent<StatisticsManager>();
            actor.Stats = new Statistics();

            for (var i = 0; i < playerInstance.transform.childCount; i++)
            {
                var child = playerInstance.transform.GetChild(i);
                if (child.gameObject.name == "PlayerAgent")
                {
                    child.gameObject.active = true;
                    PlayerTracker.transform.parent = playerInstance.transform;
                    //playerInstance.transform.eulerAngles = new Vector3(StartingRotationX, StartingRotationY, StartingRotationZ);
                    playerInstance.transform.position = new Vector3(StartingPositionX, StartingPositionY, StartingPositionZ);
                }
            }

            for (var i = 0; i < StartingPlayerInventoryItemIDs.Length; i++)
            {
                actor.Inventory.SelectedItemID = StartingPlayerInventoryItemIDs[i];
                actor.Inventory.SelectedAmount = StartingPlayerInventoryItemQuantities[i];
                actor.Inventory.AddItem();
                actor.Inventory.SelectedItemID = 0;
                actor.Inventory.SelectedAmount = 0;
                actor.Inventory.SelectedItemIndex = 0;
            }

            foreach (var itemId in StartingPlayerActiveInventoryItemIDs)
            {
                if (actor.Inventory.GetItemByID(itemId).GetComponent<Equipable>() != null)
                    actor.Inventory.EquipmentManager.AddEquipmentToSlots(actor.Inventory.GetItemByID(itemId));
            }

            actor.Inventory.ApparrelManager.CurrentlyActiveIDs = StartingPlayerActiveInventoryItemIDs;
            actor.Inventory.ApparrelManager.UpdateApparrel();

            actor.Stats.InstanceID = InstanceManager.GenerateInstanceID();
            playerInstance.gameObject.name = $"{actor.Stats.FirstName} {actor.Stats.LastName}";
            InstanceManager.AddInstance(actor.Stats.InstanceID, playerInstance);
            InstanceManager.CurrentPlayerInstanceID = actor.Stats.InstanceID;
            RuntimeManager.PlayerInstance = playerInstance;
            playerInstance.gameObject.active = true;
            RuntimeManager.PopulateReferences();
            RuntimeManager.Calendar.SetDateTime(StartingMinute, StartingHour, StartingDay, StartingYear);
            //ActorEditor.ChangeAppearance(actor);
            //StoryBeatManager.BeginNewTimeline();
        }

        public void OutputScreenCapture(string savedCaptureOutputFilePath = "")
        {
            if (!string.IsNullOrWhiteSpace(savedCaptureOutputFilePath))
            {
                if (System.IO.File.Exists($"{savedCaptureOutputFilePath.Replace("/", "\\")}"))
                    System.IO.File.Delete($"{savedCaptureOutputFilePath.Replace("/", "\\")}");
                System.IO.File.Move($"{Application.persistentDataPath.Replace("/", "\\")}\\{DirectoryName}\\_Temp.png", $"{savedCaptureOutputFilePath.Replace("/", "\\")}");
            }
            System.IO.File.Delete($"{Application.persistentDataPath.Replace("/", "\\")}\\{DirectoryName}\\_Temp.png");
        }

        public IEnumerator TakeTemporaryScreenCapture()
        {
            var camera = RuntimeManager.PlayerInstance.GetComponentInChildren<CameraManager>().ActiveCamera.GetComponentInChildren<Camera>();
            var screenTexture = new RenderTexture(Screen.width, Screen.height, 16);
            var oldTargetTexture = camera.targetTexture;

            RuntimeManager.PlayerInstance.GetComponentInChildren<HUDManager>().UIWrapper.active = false;

            camera.targetTexture = screenTexture;
            camera.Render();
            var renderedTexture = new Texture2D(Screen.width, Screen.height);
            yield return waitForEndOfFrame;
            renderedTexture.ReadPixels(new Rect(0, 0, Screen.width, Screen.height), 0, 0);
            camera.targetTexture = oldTargetTexture;

            var byteArray = renderedTexture.EncodeToPNG();

            RuntimeManager.PlayerInstance.GetComponentInChildren<HUDManager>().UIWrapper.active = true;

            System.IO.File.WriteAllBytes($"{Application.persistentDataPath.Replace("/", "\\")}\\{DirectoryName}\\_Temp.png", byteArray);

        }

        void Start() { }

        void Update() { }
    }
}