using UnityEngine;
using UnityEditor;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System;

[System.Serializable]
public class goColor
{
    public GameObject go;
    public GameObject border;
    public Color32 rgb;

    public goColor(GameObject go, Color32 rgb, GameObject border = null)
    {
        this.go = go;
        this.border = border;
        this.rgb = rgb;
    }

    public goColor(GameObject go, byte r, byte g, byte b, GameObject border = null)
    {
        this.go = go;
        this.border = border;
        this.rgb = new Color32(r, g, b, 0);
    }
}

[System.Serializable]
public class goAlpha
{
    public GameObject go;
    public int aPercent;

    public goAlpha(GameObject go, int val)
    {
        this.go = go;
        aPercent = val;
    }

    public static byte percentToByte(int val)
    {
        return BitConverter.GetBytes( Mathf.RoundToInt( 255 * ((float)(((((val < 100) ? val : 100) > 0) ? val : 0)) / 100)))[0];
    }

    public static int byteToPercent(byte val)
    {
        return val / 255 * 100;
    }

}

public class EditorTileSelect : MonoBehaviour
{
    public string levelName;
    public goColor[] rgbMap;
    public goAlpha[] aMap;

    public void save()
    {
        string path = Application.dataPath + "/Resources/Levels/" + levelName + ".txt";

        if (!File.Exists(path))
        {
            File.Create(path);
        }
        StreamWriter sw = new StreamWriter(path);
        for (int i = 0; i < rgbMap.Length; i++) // Write RGB values
        {
            //Debug.Log(AssetDatabase.GetAssetPath(gos[i]));
            sw.WriteLine(AssetDatabase.GetAssetPath(rgbMap[i].go));
            if(rgbMap[i].border != null)
                sw.WriteLine(AssetDatabase.GetAssetPath(rgbMap[i].border));
            sw.WriteLine(rgbMap[i].rgb.r);
            sw.WriteLine(rgbMap[i].rgb.g);
            sw.WriteLine(rgbMap[i].rgb.b);
        }

        if(aMap.Length > 0)
        {
            sw.WriteLine(":");
            for (int i = 0; i < aMap.Length; i++)
            {
                sw.WriteLine(AssetDatabase.GetAssetPath(aMap[i].go));
                sw.WriteLine(goAlpha.percentToByte(aMap[i].aPercent));
            }
        }

        sw.Close();
    }

    public void load()
    {
        List<goColor> colors  = new List<goColor>();
        List<goAlpha> alphas = new List<goAlpha>();

        StreamReader sr;
        string path = Application.dataPath + "/Resources/Levels/" + levelName + ".txt";

        try
        {
            GameObject go;
            GameObject border;
            byte r, g, b;
            string line;
            bool doingAlphas = false;

            sr = new StreamReader(path);

            while (!sr.EndOfStream) // Read values until EOS
            {
                line = sr.ReadLine();
                if (line == ":")
                {
                    doingAlphas = true;
                    line = sr.ReadLine();
                }

                go = AssetDatabase.LoadAssetAtPath<GameObject>(line);  // Load GameObject
                line = sr.ReadLine();

                if (!char.IsDigit(line[0]))  // Has a border
                {
                    border = AssetDatabase.LoadAssetAtPath<GameObject>(line);
                    line = sr.ReadLine();
                }
                else
                    border = null;

                if (!doingAlphas)    // Reading RGB values
                {
                    byte.TryParse(line, out r); // Read red value
                    line = sr.ReadLine();
                    byte.TryParse(line, out g); // Read green value
                    line = sr.ReadLine();
                    byte.TryParse(line, out b); // Read blue value

                    //Debug.Log(r + ", " + g + ", " + b + " | " + go.name);

                    colors.Add(new goColor(go, r, g, b, border));
                }else    // Reading alpha values
                {
                    byte.TryParse(line, out r); // Read alpha value (store in r because it wont be used any more)

                    //Debug.Log(r + " | " + go.name);

                    alphas.Add(new goAlpha(go, r));
                }
            }
            sr.Close();
        }
        catch (System.Exception)
        {
            throw;
        }

        rgbMap = colors.ToArray();
        aMap = alphas.ToArray();
    }
}

[CustomEditor (typeof(EditorTileSelect))]
public class EditorTileSelectEditor : Editor
{
    public override void OnInspectorGUI()
    {
        base.OnInspectorGUI();

        if(GUILayout.Button("Save"))
        {
            ((EditorTileSelect)target).save();
        }

        if(GUILayout.Button("Load"))
        {
            ((EditorTileSelect)target).load();
        }
    }
}