#include "svg.h"
#include <string>
using namespace std;

// Функции вывода заголовка и окончания SVG
void
svg_begin(double width, double height) {
    cout << "<?xml version='1.0' encoding='UTF-8'?>\n";
    cout << "<svg ";
    cout << "width='" << width << "' ";
    cout << "height='" << height << "' ";
    cout << "viewBox='0 0 " << width << " " << height << "' ";
    cout << "xmlns='http://www.w3.org/2000/svg'>\n";
}
void
svg_end() {
    cout << "</svg>\n";
}

//Подписи к столбцам
void
svg_text(double left, double baseline, string text) {
        cout << "<text x='" << left << "' y='" << baseline << "'>" << text << "</text>\n";
}

//Вывод прямоугольника
void
svg_rect(double x, double y, double width, double height, string stroke = "black", string fill = "black") {
    cout << "<rect x='" << x << "' y='" << y << "' width='" << width << "' height='" << height << "' "
         << "stroke='" << stroke << "' fill='" << fill << "' />\n";
}

//Графический вывод гистограммы
void
show_histogram_svg(const vector<size_t>& bins) {
    const auto IMAGE_WIDTH = 400;
    const auto IMAGE_HEIGHT = 300;
    const auto TEXT_LEFT = 20;
    const auto TEXT_BASELINE = 20;
    const auto TEXT_WIDTH = 50;
    const auto BIN_HEIGHT = 30;
    const auto BLOCK_WIDTH = 10;
    vector<string> colors = {
        "#ECE1AC",
        "#ECACD6",
        "#CEACEC"
    };
    svg_begin(400, 300);
    double top = 0;
    for (size_t i = 0; i < bins.size(); i++) {
        string color = colors[i];
        const double bin_width = BLOCK_WIDTH * bins[i];
        svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bins[i])); //вывод подписей
        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "#ACB0EC", color); //вывод столбцов
        top += BIN_HEIGHT;
    }

    svg_end();
}