using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using UnityEngine;
using UnityEngine.SceneManagement;
using UnityEngine.UI;

public class SaveLoad : MonoBehaviour
{
    public FadeInOutSaveGameText fadeInOutSaveGame;
    public float timeToStartSaving;
    public float savingFadeInOutTime;
    public int resWidth = 1920;
    public int resHeight = 1080;

    [Tooltip("If true will save manualy only by the left control key.")]
    public bool saveManual = false;

    private List<GameObject> objectsToSave;
    private string saveString;

    private void Awake()
    {
        if (objectsToSave == null)
        {
            objectsToSave = new List<GameObject>();
        }

        //objectsToSave = GameObject.FindGameObjectsWithTag("My Unique ID").ToList();
        var objectsWithGenerateGuid = GameObject.FindObjectsOfType<GenerateGuid>().ToList();
        if (objectsWithGenerateGuid.Count > 0 && objectsToSave.Count == 0)
        {
            for (int i = 0; i < objectsWithGenerateGuid.Count; i++)
            {

                // 29ad9dc9-80c2-498a-bda1-bce883df7971

                // 29ad9dc9-80c2-498a-bda1-bce883df7971

                objectsToSave.Add(objectsWithGenerateGuid[i].gameObject);
            }
        }

        Debug.Log("Start");

        for (int i = 0; i < objectsToSave.Count; i++)
        {
            Debug.Log($"{i}");
            Debug.Log($"{objectsToSave[i].name}");
        }

        Debug.Log("End Init");

        // Here to find all gameobjects with the GenerateGuid script attached to them as gameobjects
        // To be saved instead finding them by tag.
        // And change now all this gameobjects tag to be untagged !
    }

    public void Save()
    {
        SaveGame saveGame = new SaveGame();
        saveGame.saveObjects = new List<SaveObject>();
        for (int i = 0; i < objectsToSave.Count; i++)
        {
            SaveObject saveObject = new SaveObject();
            saveObject.transformSaver = new TransformSaver();
            // Need to change everywhere need from GetInstanceID and gameObjectInstanceID to
            // The new List objectsToSave to get from each object to save the component script
            // GenerateGuid get from it the string guid and convert the string to int.
            Debug.Log($"{i}");
            Debug.Log($"{objectsToSave[i].name}");
            saveObject.gameObjectUniqueID = objectsToSave[i].GetComponent<GenerateGuid>().uniqueGuidID;
            var x = objectsToSave[i].GetComponents<Component>();
            var stateQueryComponent = x.Where(component => component is IStateQuery).ToList();
            List<KeyToValue> componentsState = new List<KeyToValue>();
            foreach (var z in stateQueryComponent)
            {
                var w = z as IStateQuery;
                componentsState.Add(new KeyToValue(w.UniqueId.ToString(), w.GetState()));
            }

            saveObject.transformSaver.position = objectsToSave[i].transform.position;
            saveObject.transformSaver.rotation = objectsToSave[i].transform.rotation;
            saveObject.transformSaver.scaling = objectsToSave[i].transform.localScale;

            saveObject.componentsState = componentsState;
            saveGame.saveObjects.Add(saveObject);
        }

        string json = JsonUtility.ToJson(saveGame);
        //StartCoroutine(fadeInOutSaveGame.CanvasAlphaChangeOverTime(3f,true));

        SaveSystem.Save(json, resWidth, resHeight);
        //StartCoroutine(fadeInOutSaveGame.CanvasAlphaChangeOverTime(3f, false));
    }

    public void Load(string fileName)
    {
        if (objectsToSave.Count > 0)
        {
            // Why objectsToSave here is empty ?
            Dictionary<string, GameObject> uniqueIdToObject = objectsToSave
                .ToDictionary(o => o.GetComponent<GenerateGuid>().uniqueGuidID, o => o);

            saveString = SaveSystem.Load(fileName);

            if (saveString != null)
            {
                SaveGame saveGame = JsonUtility.FromJson<SaveGame>(saveString);

                if (saveGame != null)
                {
                    foreach (var saveObject in saveGame.saveObjects)
                    {
                        List<KeyToValue> loadedComponents = saveObject.componentsState;
                        var objectToSetState = uniqueIdToObject[saveObject.gameObjectUniqueID];

                        objectToSetState.transform.position = saveObject.transformSaver.position;
                        objectToSetState.transform.rotation = saveObject.transformSaver.rotation;
                        objectToSetState.transform.localScale = saveObject.transformSaver.scaling;

                        var y = objectToSetState.GetComponents<Component>();
                        var z = y.Where(component => component is IStateQuery).ToList();
                        Dictionary<string, IStateQuery> zz = z.ToDictionary(sq => (sq as IStateQuery).UniqueId.ToString(), sq => sq as IStateQuery);

                        foreach (KeyToValue keyvalue in loadedComponents)
                        {
                            zz[keyvalue.Key].SetState(keyvalue.Value);
                        }
                    }
                }
            }
        }
    }
}