#pragma once
#include <afx.h>
#include <string>
#include <locale>  
#include <codecvt>
#include <iostream>
#include <sstream>
#include <iomanip>
#include <vector>
using namespace std;

const std::string base64_chars =
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz"
"0123456789+/";

class StringUtil {

public:
	static string wstringToString(wstring wt) {
		wstring_convert<codecvt_utf8<wchar_t>> conv;
		string result = conv.to_bytes(wt);
		return result;
	}

	static std::wstring Unescape(const std::string& input) {
		std::wstring wresult;
		for (size_t i = 0; i < input.length(); ) {
			if (input[i] == '\\' && input[i + 1] == 'u') {
				std::string code = input.substr(i + 2, 4);
				wchar_t unicode = stoi(code, nullptr, 16);
				wresult += unicode;
				i += 6;
			}
			else {
				wresult += input[i++];
			}
		}
		return wresult;
	}

	static std::string cstring2String(CString getbuf) {
		int iLen = WideCharToMultiByte(0, 0, getbuf, -1, NULL, 0, NULL, NULL);   //Ê×ÏȼÆËãTCHAR ³¤¶È¡£
		char* chRtn = new char[iLen * sizeof(char)];  //¶¨ÒåÒ»¸ö TCHAR ³¤¶È´óСµÄ CHAR ÀàÐÍ¡£
		WideCharToMultiByte(0, 0, getbuf, -1, chRtn, iLen, NULL, NULL);  //½«TCHAR ÀàÐ͵ÄÊý¾Ýת»»Îª CHAR ÀàÐÍ¡£
		std::string str(chRtn);
		return str;
	}

	static  std::string cstring2StringV2(CString getbuf) {
		std::wstring_convert<std::codecvt_utf8<wchar_t>> converter;
		std::string utf8String = converter.to_bytes(getbuf);
		return utf8String;
	}

	static string to_string(double val) {
		std::stringstream stream;
		stream << std::fixed << std::setprecision(2) << val;
		return stream.str();
	}

	static string to_string(float val) {
		std::stringstream stream;
		stream << std::fixed << std::setprecision(2) << val;
		return stream.str();
	}

	static bool isNumber(const std::string& str) {
		if (str.empty()) {
			return false;
		}
		for (char c : str) {
			if (!isdigit(c)) {
				return false;
			}
		}
		return true;
	}

	// doubleתΪ×Ö·û´®
	static string toString(double value, int precision) {
		std::ostringstream oss;
		oss << std::fixed << std::setprecision(precision) << value;
		return oss.str();
	}

	static std::vector<std::string> split(std::string str, std::string pattern) {
		std::string::size_type pos;
		std::vector<std::string> result;
		str += pattern;//À©Õ¹×Ö·û´®ÒÔ·½±ã²Ù×÷
		int size = str.size();
		for (int i = 0; i < size; i++)
		{
			pos = str.find(pattern, i);
			if (pos < size)
			{
				std::string s = str.substr(i, pos - i);
				result.push_back(s);
				i = pos + pattern.size() - 1;
			}
		}
		return result;
	}
	
	static std::string base64_encode(const std::string& input) {
		std::string encoded;
		int val = 0, valb = -6;
		for (unsigned char c : input) {
			val = (val << 8) + c;
			valb += 8;
			while (valb >= 0) {
				encoded.push_back(base64_chars[(val >> valb) & 0x3F]);
				valb -= 6;
			}
		}
		if (valb > -6) encoded.push_back(base64_chars[((val << 8) >> (valb + 8)) & 0x3F]);
		while (encoded.size() % 4) encoded.push_back('=');
		return encoded;
	}

	static std::string base64_decode(const std::string& input) {
		std::string decoded;
		std::vector<int> T(256, -1);
		for (int i = 0; i < 64; i++) T[base64_chars[i]] = i;

		int val = 0, valb = -8;
		for (unsigned char c : input) {
			if (T[c] == -1) break;
			val = (val << 6) + T[c];
			valb += 6;
			if (valb >= 0) {
				decoded.push_back(char((val >> valb) & 0xFF));
				valb -= 8;
			}
		}
		return decoded;
	}

	static std::string trim(const std::string& str) {
		if (str.empty()) {
			return str;
		}

		// È¥³ýÇ°¿Õ¸ñ
		size_t start = str.find_first_not_of(" \t\n\r");
		if (start == std::string::npos) {
			return ""; // Èç¹ûÈ«ÊÇ¿Õ¸ñ£¬·µ»Ø¿Õ×Ö·û´®
		}

		// È¥³ýºó¿Õ¸ñ
		size_t end = str.find_last_not_of(" \t\n\r");
		return str.substr(start, end - start + 1);
	}

};