#include "Request.h"
#include "Response.h"
#include <iostream>
#include <fstream>
#include <memory>
#include "json.hpp"
#include <Windows.h>
using namespace std;
using namespace HTTPWrapper;

ofstream mlog("log.txt");

std::string GBKToUTF8(const std::string& GBKString)
{
	// GBK -> Unicode
	int nLen = MultiByteToWideChar(CP_ACP, 0, GBKString.c_str(), -1, NULL, 0);
	std::unique_ptr<wchar_t[]> buff(new wchar_t[nLen + 8]);
	memset(buff.get(), 0, nLen + 8);
	MultiByteToWideChar(CP_ACP, 0, GBKString.c_str(), -1, buff.get(), nLen + 8);
	// Unicode -> UTF8
	nLen = WideCharToMultiByte(CP_UTF8, 0, buff.get(), -1, NULL, 0, NULL, NULL);
	std::unique_ptr<char[]> xbuff(new char[nLen + 8]);
	memset(xbuff.get(), 0, nLen + 8);
	WideCharToMultiByte(CP_UTF8, 0, buff.get(), -1, xbuff.get(), nLen + 8, NULL, NULL);
	return std::string(xbuff.get());
}

std::wstring GBKToUnicode(const std::string& GBKString)
{
	// GBK -> Unicode
	int nLen = MultiByteToWideChar(CP_ACP, 0, GBKString.c_str(), GBKString.size(), NULL, 0);
	std::unique_ptr<wchar_t[]> buff(new wchar_t[nLen + 8]);
	MultiByteToWideChar(CP_UTF8, 0, GBKString.c_str(), GBKString.size(), buff.get(), nLen + 8);
	buff[nLen] = 0;
	return std::wstring(buff.get());
}

string urlencode(const string& url)
{
	string ostr;
	for (const unsigned char& c : url)
	{
		if ((c >= '0'&&c <= '9') ||
			(c >= 'a'&&c <= 'z') ||
			(c >= 'A'&&c <= 'Z') ||
			(c == '-') ||
			(c == '_') ||
			(c == '.'))
			ostr.push_back(c);
		else
		{
			unsigned int first = c / 16;
			unsigned int second = c % 16;
			ostr.append("%");
			ostr.push_back((char)((first < 10) ? ('0' + first) : ('A' + first - 10)));
			ostr.push_back((char)((second < 10) ? ('0' + second) : ('A' + second - 10)));
		}
	}
	return ostr;
}

vector<string> GetList()
{
	vector<string> vec;
	WIN32_FIND_DATA fnd;
	HANDLE hand = FindFirstFile("F:\\faaq\\OutSideVideo\\*.mp4", &fnd);
	if (hand == INVALID_HANDLE_VALUE) return vec;
	do {
		if (strcmp(fnd.cFileName, ".") != 0 && strcmp(fnd.cFileName, "..") != 0)
		{
			int len = strlen(fnd.cFileName);
			if (strcmp(fnd.cFileName + len - 4, ".mp4") == 0)
			{
				char tmp[2048] = { 0 };
				strncpy(tmp, fnd.cFileName, len - 4);
				vec.push_back(urlencode(GBKToUTF8(tmp)));
			}
		}
	} while (FindNextFile(hand, &fnd));
	FindClose(hand);
	return vec;
}

int main()
{
	Request req;
	Response res;
	nlohmann::json j;
	vector<string> lst = GetList();
	j["files"] = lst;
	res.writer << j;
    return 0;
}