using System;
using System.IO;
using System.Collections;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using UnityEngine;

public class Card : MonoBehaviour
{
    GameObject cntCard;
    AssetBundle bundle;

    int idx = 0;
    int nextChangeTime = 0;
    bool updatedConfig = false;
    bool writeConfigInside = false;


    void Start()
    {
        FileUtil.WatchFile(Application.streamingAssetsPath,
            "config.ini", new FileSystemEventHandler(OnIniChanged));
        Config.LoadConfigFromIni();
        SetConfig();
        Config.LoadCardsInDir();
        InitIdx();
        LoadCard(Config.cardPath);
    }

    private void OnIniChanged(object sender, FileSystemEventArgs e)
    {
        
        if (e.ChangeType != WatcherChangeTypes.Changed)
        {
            return;
        }
        if (writeConfigInside)
        {
            writeConfigInside = false;
        }
        else
        {
            Debug.Log("Ini changed");
            updatedConfig = true;
        }
    }

    void SetConfig()
    {
        if (Config.fullscreen == 1)
        {
            Screen.SetResolution(7680, 4320, true);
        }
        else
        {
            Screen.SetResolution(1280, 720, false);
        }
        if (Config.cardPath == "" || Config.cardPath == "null")
        {
            Config.cardPath = FileUtil.OpenFile();
            Config.SaveConfigToIni();
            writeConfigInside = true;
        }
        Camera camera = GetComponent<Camera>();
        camera.orthographicSize = Config.cameraSize;
        camera.transform.position = 
            new Vector3(Config.cameraX, Config.cameraY, -10);
    }

    void LoadCard(string cardPath)
    {
        if (cntCard) Destroy(cntCard);
        if (bundle) bundle.Unload(true);
        bundle = AssetBundle.LoadFromFile(cardPath);
        foreach (var name in bundle.GetAllAssetNames())
        {
            Debug.Log(name);
            cntCard = (GameObject)Instantiate(bundle.LoadAsset(name));
        }
        Config.cardPath = cardPath;
        Config.SaveConfigToIni();
        writeConfigInside = true;
        nextChangeTime = (int)Time.time + Config.changeTime;
    }

    void InitIdx()
    {
        for (int i = 0; i < Config.cardsCount; ++i)
        {
            if (Config.cardsList[i] == Config.cardPath)
            {
                idx = i;
            }
        }
    }
    

    void Update()
    {
        if (updatedConfig)
        {
            Config.LoadConfigFromIni();
            SetConfig();
            Config.LoadCardsInDir();
            this.InitIdx();
            this.LoadCard(Config.cardPath);
            updatedConfig = false;
        }

        if (Config.autoChange == 1 && Time.time >= nextChangeTime && cntCard)
        {
            LoadNextCard();
        }
        //SetResolution();
    }

    public void AdjustYAdd()
    {
        Config.cameraY += 0.1f;
        Config.SaveConfigToIni();
        writeConfigInside = true;
        Camera camera = GetComponent<Camera>();
        Vector3 vec = camera.transform.position;
        vec.y = Config.cameraY;
        camera.transform.position = vec;
        
    }

    public void AdjustYMinus()
    {
        Config.cameraY -= 0.1f;
        Config.SaveConfigToIni();
        writeConfigInside = true;
        Camera camera = GetComponent<Camera>();
        Vector3 vec = camera.transform.position;
        vec.y = Config.cameraY;
        camera.transform.position = vec;
    }

    public void LoadNextCard()
    {
        if (Config.randomCard == 1)
        {
            System.Random ran = new System.Random();
            idx = ran.Next(Config.cardsCount);
        }
        else
        {
            idx++;
            idx %= Config.cardsCount;
        }
        LoadCard(Config.cardsList[idx]);
    }

    public void LoadNewCard()
    {
        LoadCard(FileUtil.OpenFile());
        Config.LoadCardsInDir();
        InitIdx();
    }

    public void Quit()
    {
        Application.Quit();
    }

    /*
    public void SetResolution()
    {
        if (Screen.fullScreen)
        {
            return;
        }
        int curScreenWidth = Screen.width;
        int curScreenHeight = Screen.height;
        float curScale = (float)curScreenWidth / curScreenHeight;
        if (curScale > 16 / 9)
        {
            int h = (int)((9 * curScreenWidth) / 16);
            Screen.SetResolution(curScreenWidth, h, false);

        }
        else if (curScale < 16 / 9)
        {
            int w = (int)((16 * curScreenHeight) / 9);
            Screen.SetResolution(w, curScreenHeight, false);

        }
    }
    */
}