using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;

namespace NewsCrawler
{
	static class Config
	{
		static Dictionary<string, string> m_Data = new Dictionary<string, string>();

		static Random m_Random = new Random();
		static int m_iDartAPIKeyCnt = 0;
		static bool[] m_abDartAPIKeyLimit = null;

		public static void Init()
		{
			m_Data.Add("manual-price", "100000");
			m_Data.Add("buy-price", "1000000");
			m_Data.Add("supply-contract-rate", "5.0");
			Load();

			int iIdx = 1;
			while(true)
			{
				if(m_Data.ContainsKey("dart-api-key"+iIdx) == false)
					break;
				iIdx++;
			}
			m_iDartAPIKeyCnt = iIdx-1;

			m_abDartAPIKeyLimit = new bool[m_iDartAPIKeyCnt];
			for(int i = 0; i<m_iDartAPIKeyCnt; i++)
				m_abDartAPIKeyLimit[i] = false;
		}

		static void Load()
		{
			string strPath = Util.GetConfigPath()+"/config.ini";
			if(File.Exists(strPath) == false)
				return;

			string[] aLines = File.ReadAllLines(strPath);
			foreach(string strLine in aLines)
			{
				if(strLine.Trim().Length <= 0)
					continue;

				string[] aTokens = strLine.Trim().Split('=');
				if(aTokens.Length < 2)
					continue;

				if(m_Data.ContainsKey(aTokens[0]) == true)
					m_Data[aTokens[0]] = aTokens[1];
				else
					m_Data.Add(aTokens[0], aTokens[1]);
			}
		}

		static void Save()
		{
			string strContents = "";
			foreach(KeyValuePair<string, string> pair in m_Data)
				strContents += pair.Key + "=" + pair.Value + Environment.NewLine;

			string strPath = Util.GetConfigPath()+"/config.ini";
			File.WriteAllText(strPath, strContents, new UTF8Encoding(true));
		}

		public static int GetManualPrice()
		{
			int iPrice;
			int.TryParse(m_Data["manual-price"], out iPrice);
			return iPrice;
		}

		public static void SetManualPrice(int iPrice)
		{
			m_Data["manual-price"] = iPrice.ToString();
			Save();
		}

		public static int GetBuyPrice()
		{
			int iPrice;
			int.TryParse(m_Data["buy-price"], out iPrice);
			return iPrice;
		}

		public static void SetBuyPrice(int iPrice)
		{
			m_Data["buy-price"] = iPrice.ToString();
			Save();
		}

		public static void SetAccount(string strAccount, string strAccountSub)
		{
			m_Data["account"] = strAccount;
			m_Data["sub-account"] = strAccountSub;
			Save();
		}

		public static string GetAccount()
		{
			return m_Data["account"];
		}

		public static string GetSubAccount()
		{
			return m_Data["sub-account"];
		}

		public static void SetSupplyContractRate(float fRate)
		{
			m_Data["supply-contract-rate"] = fRate.ToString();
			Save();
		}

		public static float GetSupplyContractRate()
		{
			float fRate;
			float.TryParse(m_Data["supply-contract-rate"], out fRate);
			return fRate;
		}

		public static string GetDartAPIKey()
		{
			if(m_iDartAPIKeyCnt <= 0)
				return "";

			if(m_abDartAPIKeyLimit.All(s => s == true) == true)
				return "";

			int iNum = -1;
			while(iNum < 0 || m_abDartAPIKeyLimit[iNum-1] == true)
				iNum = m_Random.Next(0, 10000)%m_iDartAPIKeyCnt + 1;

			return m_Data["dart-api-key"+iNum];
		}

		public static void SetDartAPIKeyLimit(string strKey)
		{
			for(int i=0; i<m_iDartAPIKeyCnt; i++)
			{
				if(m_Data["dart-api-key"+(i+1).ToString()] == strKey)
				{
					m_abDartAPIKeyLimit[i] = true;
					break;
				}
			}
		}
	}
}