#include <vector>
#include <iostream>
#include<cmath>
#include "histogram.h"
#include "text.h"
#include "svg.h"
#include <curl/curl.h>
#include <sstream>
#include <string>
const size_t SCREEN_WIDTH = 80;
const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
using namespace std;
struct Input {
	vector<double> numbers;
	size_t bin_count{};

};

//Input input_data()    3я лабораторная
//{
//	size_t number_count;
//	cin >> number_count;
//	Input in;
//	in.numbers.resize(number_count);
//	for (size_t i = 0; i < number_count; i++)
//	{
//		cin >> in.numbers[i];
//
//	}
//
//	cin >> in.bin_count;
//
//	return in;
//}
Input input_data(istream& in,bool prompt) {

    if (prompt == true) cerr << "Enter number_count: ";

    size_t number_count;
    in >> number_count;

    Input data;
    data.numbers.resize(number_count);

    if (prompt == true) cerr << "Enter numbers: ";

    for (size_t i = 0; i < number_count; i++) {
        in >> data.numbers[i];
    }

    if (prompt == true) cerr << "Enter bin count: ";

    in >> data.bin_count;
	return data;
}
size_t
write_data(void* items, size_t item_size, size_t item_count, void* ctx) {
    size_t data_size = item_size * item_count;
    stringstream* buffer = reinterpret_cast<stringstream*>(ctx);
    buffer->write(reinterpret_cast<const char*>(items), data_size);
    return 0;
}
Input
download(const string& address) {
    stringstream buffer;
    CURL* curl = curl_easy_init();
    if (curl) {
        CURLcode res;
        curl_easy_setopt(curl, CURLOPT_URL, address.c_str());
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &buffer);
        res = curl_easy_perform(curl);
        if (res != CURLE_OK) {
            fprintf(stderr, "curl_easy_perform() failed: %s\n",
                curl_easy_strerror(res));
            exit(1);
        }
        curl_easy_cleanup(curl);
    }

    return input_data(buffer, false);
}

//int main()
//{
//    auto in = input_data(cin);
//    vector <size_t> bins = make_histogram(in.numbers, in.bin_count);
//    show_histogram_svg(bins, in.bin_count);
//}

void usage() {
    cout << "Usage: lab34.exe [-format {text|svg}] URL\n";
    exit(1);
}

int main(int argc, char* argv[]) {
    curl_global_init(CURL_GLOBAL_ALL);

    if (argc > 1) {
        string format_option;
        for (int i = 1; i < argc; ++i) {
            if (argv[i][0] == '-') {
                if (strcmp(argv[i], "--") == 0) {
                    break;
                }
                if (strlen(argv[i]) >= 9 && strcmp(argv[i] + 1, "format") == 0) {
                    format_option = argv[++i];
                    break;
                }
            }
        }

        if (!format_option.empty()) {
            if (format_option != "text" && format_option != "svg") {
                usage();
            }
        }

        Input input;
        if (argc > 2) {
            input = download(argv[2]);
        }
        else {
            input = input_data(cin, true);
        }

        vector<size_t> bins = make_histogram(input.numbers, input.bin_count);

        if (!format_option.empty()) {
            if (format_option == "text") {
                show_histogram_text(bins, input.bin_count);
            }
            else {
                show_histogram_svg(bins, input.bin_count);
            }
        }
        else {
            show_histogram_svg(bins, input.bin_count);
        }
    }
    else {
        cerr << "No arguments provided." << endl;
        usage();
    }

    return 0;
}