#include <math.h>
#include <vector>
#include <iostream>
#include <sstream>
#include <curl/curl.h>
#include <string>

#include "histogram.h"
#include "text.h"
#include "svg.h"


using namespace std;

struct Input {
    vector<double> numbers;
    size_t bin_count{};
};

Input
input_data(istream& in,bool prompt) {
    string a, b, c;
    if(prompt== true){
    a = "Enter number count:";
    b = "Enter numbers:";
    c = "Enter bin count:";
    }
    size_t number_count;
    cerr << a;
    in >> number_count;

    Input on;
    on.numbers.resize(number_count);
    for (size_t i = 0; i < number_count; i++) {
        //cerr << b << i+1 << ": ";
        in >> on.numbers[i];}
    cerr << c;
    in >> on.bin_count;
    return on;
}

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 data_size;
}

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){
            cerr << curl_easy_strerror(res);
            exit(1);}
        curl_easy_cleanup(curl);}
    return input_data(buffer, false);
}


int main(int argc, char* argv[]){
    Input input;

    if (argc > 1) {
        string adr, format, type;
        if ((adr=argv[1]).substr(0,7)!= "http://"){
            if ((format=argv[1])== "-format"){
                if ((type=argv[2])== "svg"){
                    input = download(argv[3]);
                    const auto bins = make_histogram(input.numbers, input.bin_count);
                    show_histogram_svg(bins);
                }
                else if ((type=argv[2])== "text"){
                    input = download(argv[3]);

                    auto bins = make_histogram(input.numbers, input.bin_count);
                    show_histogram_text(bins, input.bin_count);}
                else
                    cerr << "wrong type";}}
            else{
                if ((format=argv[2])== "-format"){
                    if (argc ==3)
                        cerr << "wrong type";
                    else
                    if ((type=argv[3])== "svg"){
                        input = download(argv[1]);
                        const auto bins = make_histogram(input.numbers, input.bin_count);
                        show_histogram_svg(bins);}

                else if ((type=argv[3])== "text"){
                    input = download(argv[1]);

                    auto bins = make_histogram(input.numbers, input.bin_count);
                    show_histogram_text(bins, input.bin_count);}

                    }}
    }




                //auto bins = make_histogram(in.numbers, in.bin_count);
                //show_histogram_text(bins, in.bin_count, in.n);


        /*if ((adr=argv[1]).substr(0,7)== "http://"){
            input = download(argv[1]);
            if ((type=argv[2])== "svg"){
            const auto bins = make_histogram(input.numbers, input.bin_count);
            show_histogram_svg(bins);}*/


return 0;
}