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

namespace SiegeSong 
{
    public class SaveFileLoader : MonoBehaviour
    {
        public InstanceManager InstanceManager;
        public RuntimeManager RuntimeManager;
        public HUDManager HUDManager;

        public Selector Selector;

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

        private float StartingPositionX = -35333.8f;
        private float StartingPositionY = 122.24f;
        private float StartingPositionZ = 22364.81f;

        private float StartingRotationX = 000.00000000000000f;
        private float StartingRotationY = 173.97465515136720f;
        private float StartingRotationZ = 000.00000000000000f;

        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();

        private string defaultPlayerSpeciesKey = "_Human";

        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.ActorInstances.Count; i++)
            {
                var instance = InstanceManager.ActorInstances[i];
                var instanceID = InstanceManager.ActorInstanceIDs[i];
                if (instanceID == InstanceManager.CurrentPlayerActorInstanceID)
                {
                    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";
                }
            }

            ActiveSaveFile.Actors = actorList;
            var worldObjectList = new List<WorldObjectPlacement>();
            foreach (var worldObjectInstance in InstanceManager.WorldObjectInstances)
            {
                var worldObject = new WorldObjectPlacement();
                worldObject.InstanceID = worldObjectInstance.GetComponent<WorldObjectPlacement>().InstanceID;
                worldObject.FriendlyName = worldObjectInstance.GetComponent<WorldObjectPlacement>().FriendlyName;
                worldObject.PositionX = worldObjectInstance.transform.position.x;
                worldObject.PositionY = worldObjectInstance.transform.position.y;
                worldObject.PositionZ = worldObjectInstance.transform.position.z;
                worldObject.RotationX = worldObjectInstance.transform.eulerAngles.x;
                worldObject.RotationY = worldObjectInstance.transform.eulerAngles.y;
                worldObject.RotationZ = worldObjectInstance.transform.eulerAngles.z;
                worldObject.Key = worldObjectInstance.GetComponent<WorldObjectPlacement>().Key;
                worldObjectList.Add(worldObject);
            }
            ActiveSaveFile.WorldObjects = worldObjectList;

            ActiveSaveFileMeta.ScreenWidth = Screen.width;
            ActiveSaveFileMeta.ScreenHeight = Screen.height;

            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();

            ActiveSaveFile = JsonUtility.FromJson<SaveFile>(System.IO.File.ReadAllText($"{ActiveSaveFileLocation.Replace("/", "\\")}.ssng"));
            foreach (var stats in ActiveSaveFile.Actors)
            {
                var instance = InstanceManager.InstantiateActor(stats);
                if (stats.IsPlayer)
                {
                    InstanceManager.SwitchPlayerInstance(instance.Value, instance.Key);
                }
            }
            foreach (var worldObject in ActiveSaveFile.WorldObjects)
            {
                InstanceManager.InstantiateWorldObject(worldObject);
            }

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

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

            GameObject playerActorInstance = null;
            var stats = new Statistics();
            stats.IsPlayer = true;
            stats.LocationX = StartingPositionX;
            stats.LocationY = StartingPositionY;
            stats.LocationZ = StartingPositionZ;
            stats.RotationX = StartingPositionX;
            stats.RotationY = StartingRotationY;
            stats.RotationZ = StartingRotationZ;

            playerActorInstance = InstanceManager.InstantiateActor(stats).Value;

            var actor = playerActorInstance.GetComponent<StatisticsManager>();
            actor.Stats = new Statistics();
            
            InstanceManager.SwitchPlayerInstance(playerActorInstance, actor.Stats.ActorInstanceID);
            playerActorInstance.transform.eulerAngles = new Vector3(StartingRotationX, StartingRotationY, StartingRotationZ);
            playerActorInstance.transform.position = new Vector3(StartingPositionX, StartingPositionY, StartingPositionZ);

            for (var i = 0; i < StartingPlayerInventoryItemIDs.Length; i++)
            {
                actor.InventoryManager.Inventory.AddItem(StartingPlayerInventoryItemIDs[i], StartingPlayerInventoryItemQuantities[i]);
                actor.InventoryManager.AddInventoryRow(StartingPlayerInventoryItemIDs[i], StartingPlayerInventoryItemQuantities[i]);
            }

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

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

            actor.Stats.ActorInstanceID = InstanceManager.GenerateActorInstanceID();
            playerActorInstance.gameObject.name = $"{actor.Stats.FirstName} {actor.Stats.LastName}";
            InstanceManager.ActorInstances.Add(playerActorInstance);
            InstanceManager.ActorInstanceIDs.Add(actor.Stats.ActorInstanceID);
            InstanceManager.CurrentPlayerActorInstanceID = actor.Stats.ActorInstanceID;
            RuntimeManager.PlayerActorInstance = playerActorInstance;
            playerActorInstance.transform.parent = InstanceManager.ActorInstanceContainer.transform;
            playerActorInstance.GetComponent<StatisticsManager>().HUDManager = HUDManager;
            playerActorInstance.gameObject.SetActive(true);
            RuntimeManager.PopulateReferences();
            RuntimeManager.Calendar.SetDateTime(StartingMinute, StartingHour, StartingDay, StartingYear);
            for (var i = 0; i < playerActorInstance.transform.childCount; i++)
            {
                var child = playerActorInstance.transform.GetChild(i);
                if (child.gameObject.name == "Equipment")
                {
                    Selector.Inventory = child.GetComponentInChildren<InventoryManager>();
                }
                if (child.gameObject.name == "CameraTarget")
                {
                    RuntimeManager.CameraManager.CameraTarget = child;
                }
            }
            
            Selector.CameraManager = RuntimeManager.CameraManager;
            foreach (var camera in RuntimeManager.CameraManager.NonPlayerCameras)
                camera.SetActive(false);
            RuntimeManager.CameraManager.ActiveCamera.transform.position = new Vector3(StartingPositionX, StartingPositionY, StartingPositionZ);
            RuntimeManager.CameraManager.ActiveMount = RuntimeManager.CameraManager.FirstPersonMount;
            RuntimeManager.CameraManager.FirstPersonActive = true;
            RuntimeManager.InputManager.CameraManager = RuntimeManager.CameraManager;
            //RuntimeManager.PlayerInputManager.CameraManager.SwitchCamera();
            //RuntimeManager.PlayerInputManager.CameraManager.ResetCameraPosition();
            RuntimeManager.InputManager.Selector = Selector;
            RuntimeManager.InputManager.CurrentState = InputState.World;
            
            //ActorEditor.ChangeAppearance(actor);
            //StoryBeatManager.BeginNewTimeline();

            //foreach (var camera in RuntimeManager.CameraManager.NonPlayerCameras)
            //    camera.SetActive(true);
        }

        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.PlayerActorInstance.GetComponentInChildren<CameraManager>().ActiveCamera.GetComponentInChildren<Camera>();
            var screenTexture = new RenderTexture(Screen.width, Screen.height, 16);
            var oldTargetTexture = camera.targetTexture;

            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();

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

        }

        void Start() { }

        void Update() { }
    }
}