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

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

Input input_data() {
    Input in;
    size_t number_count;
    cerr << "Enter number count: ";
    cin >> number_count;

    in.numbers.resize(number_count);
    cerr << "Enter numbers: ";
    for (size_t i = 0; i < number_count; i++) {
        cin >> in.numbers[i];
    }

    cerr << "Enter bin count: ";
    cin >> in.bin_count;

    const size_t BLOCK_WIDTH = 10;
    const size_t MIN_WIDTH = 70;
    const size_t MAX_WIDTH = 800;
    size_t required_min_width = number_count * BLOCK_WIDTH / 3;

    while (true) {
        cerr << "Enter image width (" << MIN_WIDTH << "-" << MAX_WIDTH << "), minimum " << required_min_width << ": ";
        cin >> in.image_width;

        if (in.image_width < MIN_WIDTH) {
            cerr << "Width is too small (minimum " << MIN_WIDTH << ")\n";
        } else if (in.image_width > MAX_WIDTH) {
            cerr << "Width is too large (maximum " << MAX_WIDTH << ")\n";
        } else if (in.image_width < required_min_width) {
            cerr << "Width is less than 1/3 of numbers count * block width (" << required_min_width << ")\n";
        } else {
            break;
        }
    }

    return in;
}

int main() {
    auto in = input_data();
    auto bins = make_histogram(in.numbers, in.bin_count);
    show_histogram_svg(bins, in.image_width);
    return 0;
}