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

public class loadCard : MonoBehaviour
{
    GameObject cntCard;
    AssetBundle bundle;
    string cardDir;
    List<string> cards = new List<string>();
    int idx = 0;
    int cardCount;
    int randomCard;
    int autoChange;
    int changeTime;
    int nextChangeTime = 0;


    void Start()
    {
        INIParser ini = new INIParser();
        ini.Open(Application.streamingAssetsPath + "/config.ini");

        //Screen.fullScreen = Convert.ToBoolean(ini.ReadValue("camera", "fullscreen", 1));
        if (ini.ReadValue("camera", "fullscreen", 1) == 1)
        {
            Screen.SetResolution(7680, 4320, true);
        }
        else
        {
            Screen.SetResolution(1280, 720, false);
        }

        randomCard = ini.ReadValue("card", "random", 0);
        autoChange = ini.ReadValue("card", "autochange", 0);
        changeTime = ini.ReadValue("card", "time", 0);
        nextChangeTime = changeTime;

        string cardPath = ini.ReadValue("card", "path", "null");
        if (cardPath == "" || cardPath == "null")
        {
            cardPath = OpenFile();
            ini.WriteValue("card", "path", cardPath);
        }
        FileInfo cardFileInfo = new FileInfo(cardPath);
        cardDir = cardFileInfo.DirectoryName;
        DirectoryInfo cardDirInfo = cardFileInfo.Directory;
        int i = 0;
        foreach (FileInfo file in cardDirInfo.GetFiles())
        {
            cards.Add(file.Name);
            if (file.Name == cardFileInfo.Name)
                idx = i;
            i++;
        }
        cardCount = cards.Count;

        Camera camera = GetComponent<Camera>();
        camera.orthographicSize = (float)ini.ReadValue("camera", "size", 7f);
        float x = (float)ini.ReadValue("camera", "x", 0f);
        float y = (float)ini.ReadValue("camera", "y", 0f);
        camera.transform.position = new Vector3(x, y, -10);

        ini.Close();


        bundle = AssetBundle.LoadFromFile(cardPath);
        foreach (var name in bundle.GetAllAssetNames())
        {
            Debug.Log(name);
            cntCard = (GameObject)Instantiate(bundle.LoadAsset(name));
        }

    }


    void Update()
    {
        if (autoChange == 1 && Time.time >= nextChangeTime && cntCard)
        {
            LoadNextCard();
            nextChangeTime += changeTime;
        }
        //SetResolution();

        //if (Input.GetMouseButtonDown(0))  LoadNextCard();

    }

    public void AdjustYAdd()
    {
        Camera camera = GetComponent<Camera>();
        Vector3 vec = camera.transform.position;
        vec.y += 0.1f;
        camera.transform.position = vec;
        INIParser ini = new INIParser();
        ini.Open(Application.streamingAssetsPath + "/config.ini");
        ini.WriteValue("camera", "y", vec.y);
        ini.Close();
    }

    public void AdjustYMinus()
    {
        Camera camera = GetComponent<Camera>();
        Vector3 vec = camera.transform.position;
        vec.y -= 0.1f;
        camera.transform.position = vec;
        INIParser ini = new INIParser();
        ini.Open(Application.streamingAssetsPath + "/config.ini");
        ini.WriteValue("camera", "y", vec.y);
        ini.Close();

    }

    public void LoadNextCard()
    {
        if (cntCard)
            Destroy(cntCard);
        if (bundle)
            bundle.Unload(true);

        if (randomCard == 1)
        {
            System.Random ran = new System.Random();
            idx = ran.Next(0, cardCount);
        }
        string cardPath = cardDir + "\\" + cards[(++idx) % cardCount];
        INIParser ini = new INIParser();
        ini.Open(Application.streamingAssetsPath + "/config.ini");
        ini.WriteValue("card", "path", cardPath);
        ini.Close();

        bundle = AssetBundle.LoadFromFile(cardPath);
        foreach (var name in bundle.GetAllAssetNames())
        {
            Debug.Log(name);
            cntCard = (GameObject)Instantiate(bundle.LoadAsset(name));
        }
    }

    public void LoadNewCard()
    {
        if (cntCard)
            Destroy(cntCard);
        if (bundle)
            bundle.Unload(true);
        string cardPath = OpenFile();
        INIParser ini = new INIParser();
        ini.Open(Application.streamingAssetsPath + "/config.ini");
        ini.WriteValue("card", "path", cardPath);
        ini.Close();

        bundle = AssetBundle.LoadFromFile(cardPath);
        foreach (var name in bundle.GetAllAssetNames())
        {
            Debug.Log(name);
            cntCard = (GameObject)Instantiate(bundle.LoadAsset(name));
        }

        FileInfo cardFileInfo = new FileInfo(cardPath);
        cardDir = cardFileInfo.DirectoryName;
        DirectoryInfo cardDirInfo = cardFileInfo.Directory;
        int i = 0;
        foreach (FileInfo file in cardDirInfo.GetFiles())
        {
            cards.Add(file.Name);
            if (file.Name == cardFileInfo.Name)
                idx = i;
            i++;
        }
        cardCount = cards.Count;
    }

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


    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);

        }

    }




    public string OpenFile()
    {
        FileOpenDialog dialog = new FileOpenDialog();
        dialog.structSize = Marshal.SizeOf(dialog);
        dialog.filter = "All Files\0*\0\0";
        dialog.file = new string(new char[256]);
        dialog.maxFile = dialog.file.Length;
        dialog.fileTitle = new string(new char[64]);
        dialog.maxFileTitle = dialog.fileTitle.Length;
        dialog.initialDir = UnityEngine.Application.dataPath;
        dialog.title = "打开卡面";
        dialog.defExt = "";
        dialog.flags = 0x00080000 | 0x00001000 | 0x00000800 | 0x00000008;
        //OFN_EXPLORER|OFN_FILEMUSTEXIST|OFN_PATHMUSTEXIST|OFN_NOCHANGEDIR
        if (DialogShow.GetOpenFileName(dialog))
        {
            Debug.Log(dialog.file);
            return dialog.file;
        }
        return "";
    }

}


[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
public class FileOpenDialog
{
    public int structSize = 0;
    public IntPtr dlgOwner = IntPtr.Zero;
    public IntPtr instance = IntPtr.Zero;
    public String filter = null;
    public String customFilter = null;
    public int maxCustFilter = 0;
    public int filterIndex = 0;
    public String file = null;
    public int maxFile = 0;
    public String fileTitle = null;
    public int maxFileTitle = 0;
    public String initialDir = null;
    public String title = null;
    public int flags = 0;
    public short fileOffset = 0;
    public short fileExtension = 0;
    public String defExt = null;
    public IntPtr custData = IntPtr.Zero;
    public IntPtr hook = IntPtr.Zero;
    public String templateName = null;
    public IntPtr reservedPtr = IntPtr.Zero;
    public int reservedInt = 0;
    public int flagsEx = 0;
}

public class DialogShow
{
    [DllImport("Comdlg32.dll", SetLastError = true, ThrowOnUnmappableChar = true, CharSet = CharSet.Auto)]
    public static extern bool GetOpenFileName([In, Out] FileOpenDialog dialog);
}