using UnityEngine;
using System.Collections;
using System.IO;


public class LocalizationManager : MonoBehaviour {

    //Connections

    //Attributes
    private static string DefaultLanguage = "Deutsch";
    private static bool DoDebug = false;

    //Stats
    private static Hashtable DefaultTable;
    private static Hashtable TextTable;
    private static bool HasLoadedLanguage = false;

    //-------------------------------------------------------------------------------------------------------------------

    void Awake()
    {
        //Load Default Language
        LoadLanguage("Default");
    }

    //*******************************************************************************************************************

    public static bool LoadLanguage(string fileName)
    {
        HasLoadedLanguage = true;
        bool IsDefaultLanguage = fileName == "Default";

        //Get full Path
        string LanguageToLoad = IsDefaultLanguage ? DefaultLanguage : fileName;
        string FullPath = "Localization/" + LanguageToLoad + "";

        //Load File
        TextAsset Data = (TextAsset)Resources.Load(FullPath, typeof(TextAsset));

        //Did it load?
        if (Data != null)
        {
            //Clear Table
            if (IsDefaultLanguage)
            {
                if (DefaultTable == null)
                {
                    DefaultTable = new Hashtable();
                }
                else
                {
                    return false;
                }
            }
            else
            {
                if (TextTable != null)
                {
                    TextTable.Clear();
                }
                TextTable = new Hashtable();

            }


            //Read File

            //Prepare Values
            StringReader Reader = new StringReader(Data.text);
            string Key = null;
            string Value = null;
            string Line;

            bool EndOfListReached = false;
            while (!EndOfListReached)
            {
                //Get Line
                Line = Reader.ReadLine();

                //Line available? > Get Entries
                if (Line != null)
                {
                    //What is the Line?
                    if (Line.StartsWith("id \""))
                    {
                        //ID
                        Key = Line.Substring(4, Line.Length - 5);
                    }
                    else if (Line.StartsWith("str \""))
                    {
                        //String
                        Value = Line.Substring(5, Line.Length - 6);
                    }
                }
                else
                {
                    //Done!
                    if (Line == null)
                    {
                        EndOfListReached = true;
                    }
                }
                
                //Save Entries if possible

                //Are ID and String set?
                if (Key != null && Value != null)
                {
                    //CleanUp String
                    Value = Value.Replace("\\n", "\n");
                    //Add Entry
                    if (IsDefaultLanguage)
                    {
                        DefaultTable.Add(Key, Value);
                    }
                    else
                    {
                        TextTable.Add(Key, Value);
                    }

                    //Reset
                    Key = Value = null;
                }
            }
            
            //Stop Reading
            Reader.Close();

            return true;
        }
        else if (LanguageToLoad != DefaultLanguage)
        {
            Debug.Log("Sy: Chosen language could not be found. Loading default language.");
            LoadLanguage(DefaultLanguage);
            return false;
        }
        else
        {
            Debug.Log("Sy: Chosen language and default language could not be found.");
            HasLoadedLanguage = false;
            return false;
        }
    }

    //**********************************************************************************************************************************

    public static string GetText(string key)
    {
        string ReturnedValue = "[Localization not ready]";

        //Debug?
        if (DoDebug)
        {
            return "DebugLocalization";
        }

        //Ready?
        if (HasLoadedLanguage)
        {
            ReturnedValue = "[Text not found]";

            bool KeyLoaded = false;

            //Try to load key
            if (TextTable != null)
            {
                if (TextTable.ContainsKey(key))
                {
                    string Result = (string)TextTable[key];
                    if (Result.Length > 0)
                    {
                        KeyLoaded = true;
                        ReturnedValue = Result;
                    }
                }
            }

            //Load Default if it didn't work
            if (!KeyLoaded)
            {
                if (DefaultTable.ContainsKey(key))
                {
                    string Result = (string)DefaultTable[key];
                    if (Result.Length > 0)
                    {
                        KeyLoaded = true;
                        ReturnedValue = Result;
                    }
                }
            }
        }
        return ReturnedValue;
    }

    //**********************************************************************************************************************************



}