#include <math.h>
#include <iostream>
#include <conio.h>
#include <vector>
#include <string>
#include "svg.h"
using namespace std;
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";
}

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

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

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;
    double top = 0;
    double max_count = bins[0];
    for (size_t i = 0; i < bins.size(); i++) {
        if (bins[i] > max_count)
            max_count = bins[i];
    }
    svg_begin(400, 300);
    double sred=0;

     for (size_t bin : bins) {
        const double bin_width = (IMAGE_WIDTH - TEXT_WIDTH)*(bin/max_count);
        sred+=bin_width;
        }

     sred/=bins.size();

    for (size_t bin : bins) {
        const double bin_width = (IMAGE_WIDTH - TEXT_WIDTH)*(bin/max_count);
        if(bin_width>sred)
        {

            svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
            svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "blue", "#ed1322");

        }
        if(bin_width<=sred)
        {
            svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
            svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "blue", "#13ed1a");
        }
        top += BIN_HEIGHT;
  }
    svg_end();
}