#include <vector>
#include <iostream>
#include <string>
#include "histogram.h"
#include "text.h"
#include "svg.h"
#include <curl/curl.h>
#include <sstream>
using namespace std;



struct Input {
	vector<double> Numbers;
	size_t BinCount{};
};

Input
InputData(istream& in, bool prompt) {
	Input inp;
	size_t NumberCount;
	if (prompt) {
		cerr << "Enter number count: ";
	}
	in >> NumberCount;
	inp.Numbers.resize(NumberCount);
	for (int i = 0; i < NumberCount; i++) {
		in >> inp.Numbers[i];
	}
	if (prompt) {
		cerr << "Enter bin count: ";
	}
	in >> inp.BinCount;
	return inp;
}

void FindMinMax(const vector<double>& Numbers, double& minn, double& maxx);

vector<size_t> MakeHistogram(vector<double> Numbers, size_t BinCount, double& MaxCount);

void ShowHistogrammText(vector<size_t> Bins);

size_t
WriteData(void* items, size_t item_size, size_t item_count, void* ctx) {
	stringstream* buffer = reinterpret_cast<stringstream*>(ctx);
	size_t data_size = item_size * item_count;
	buffer->write(reinterpret_cast<const char*>(items), data_size);
	return data_size;
}

Input
Download(const string& address, const string& option) {
	stringstream buffer;
	if ((option != "") && (address != "-verbose") && (option != "-verbose")) {
		cout << "Invalid argument, please use -verbose" << endl;
		exit(2);
	}
	CURL* curl = curl_easy_init();
	if (curl) {
			CURLcode res;
		    curl_easy_setopt(curl, CURLOPT_URL, (option == "" || option == "-verbose") ? address.c_str() : option.c_str());
			curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteData);
			curl_easy_setopt(curl, CURLOPT_WRITEDATA, &buffer);
			if (address == "-verbose" || option == "-verbose") {
				curl_easy_setopt(curl, CURLOPT_VERBOSE, option == "-verbose" ? option.c_str() : address.c_str());
			}
			res = curl_easy_perform(curl);
			if (res != CURLE_OK) {
				cout << curl_easy_strerror(res);
				exit(1);
			}
			curl_easy_cleanup(curl);
		
	}
	

	return InputData(buffer, false);
}



int main(int argc, char* argv[]) {
	setlocale(LC_ALL, "Russian");
	double MaxCount = 0;
	Input in;
	if (argc > 1) {
		if (argc == 2) {
			in = Download(argv[1], "");
		}
		else {
			in = Download(argv[1], argv[2]);
		}
		
	}
	else {
		in = InputData(cin, true);
	}
	vector <size_t> Bins(in.BinCount);
	Bins = MakeHistogram(in.Numbers, in.BinCount, MaxCount);
	ShowHistogramSvg(Bins);
	return 0;
	
}