using System;
using System.Collections.Generic;
using System.IO;
using ModelRenderer.Scripts.Common;

namespace BrewMonster.Common
{
    public class CECStringTab
    {
        
        private Dictionary<int, string> m_AStrTab = new Dictionary<int, string>();
        private Dictionary<int, string> m_WStrTab = new Dictionary<int, string>();

        protected bool m_bInit = false;
        protected bool m_bUnicode = false;

        public bool IsInitialized() => m_bInit;

        public void Clear()
        {
            m_AStrTab.Clear();
            m_WStrTab.Clear();
            m_bInit = false;
            m_bUnicode = false;
        }
        
        public bool Init(string szFile, bool bUnicode)
        {
            bool bRet = false;

            if (bUnicode)
            {
                bRet = LoadWideStrings(szFile);
            }

            if (!bRet)
            {
                BMLogger.LogError($"EC_StringTab::Init: {szFile} File load failed");
                return false;
            }

            m_bInit = true;
            return true;
        }

        private bool LoadWideStrings(string szFile)
        {
            AWScriptFile ScriptFile = new AWScriptFile();
            if (!ScriptFile.Open(szFile)) return false;

            bool bIndex = false;
            bool bFileEnd = true;

            //	Read configs
            while (ScriptFile.GetNextToken(true))
            {
                string tokenStr = ByteToStringUtils.UshortArrayToUnicodeString(ScriptFile.m_szToken);
                if (ByteToStringUtils.UshortArrayToUnicodeString(ScriptFile.m_szToken).StartsWith("#_index"))
                    bIndex = true;
                else if (ByteToStringUtils.UshortArrayToUnicodeString(ScriptFile.m_szToken).StartsWith("#_begin"))
                {
                    bFileEnd = false;
                    break;
                }
            }

            if (bFileEnd)
            {
                ScriptFile.Close();
                return true;
            }

            if (bIndex)
            {
                //	Every string has a preset index
                while (ScriptFile.PeekNextToken(true))
                {
                    int n = ScriptFile.GetNextTokenAsInt(true);
                    ScriptFile.GetNextToken(false);

                    string pstr = ByteToStringUtils.UshortArrayToUnicodeString(ScriptFile.m_szToken);
                    if (string.IsNullOrEmpty(pstr))
                    {
                        ScriptFile.Close();
                        BMLogger.LogError($"EC_StringTab::LoadWideStrings: {szFile} Not enough memory");
                        return false;
                    }

                    if (!m_WStrTab.TryAdd(n, pstr))
                    {
                        BMLogger.LogError($"EC_StringTab::LoadWideStrings: {szFile} Failed to add string to dictionary");
                        return false;
                    }
                }
            }
            else
            {
                int iCnt = 0;

                //	Read strings sequently
                while (ScriptFile.GetNextToken(true))
                {
                    string pstr = ByteToStringUtils.UshortArrayToUnicodeString(ScriptFile.m_szToken);
                    if (string.IsNullOrEmpty(pstr))
                    {
                        ScriptFile.Close();
                        BMLogger.LogError($"EC_StringTab::LoadWideStrings: {szFile} Not enough memory");
                        return false;
                    }

                    if (!m_WStrTab.TryAdd(iCnt++, pstr))
                    {
                        BMLogger.LogError($"EC_StringTab::LoadWideStrings: {szFile} Failed to add string to dictionary");
                        return false;
                    }
                }
            }

            ScriptFile.Close();
            
            return true;
        }
    }
}