#include "svg.h"
#include <string>
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 stroke = "black", string fill = "black")
{
    cout << "<rect x='" << x << "' y='" << y << "' width='" << width
              << "' height='" << height << "' stroke='" << stroke << "' fill='" << fill << " '/>";
}




//Защита
/*
void svg_rect(double x, double y, double width, double height, string stroke = "black", string fill = "black", double fill_opacity = 1.0) {
    cout << "<rect x='" << x << "' y='" << y << "' width='" << width
         << "' height='" << height << "' stroke='" << stroke
         << "' fill='" << fill << "' fill-opacity='" << fill_opacity << "'/>";
}

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;

    size_t max_count = *max_element(bins.begin(), bins.end());
    if (max_count == 0) max_count = 1;

    svg_begin(IMAGE_WIDTH, IMAGE_HEIGHT);
    double top = 0;

    for (size_t bin : bins) {
        const double bin_width = min(static_cast<double>(BLOCK_WIDTH * bin), static_cast<double>(IMAGE_WIDTH - TEXT_WIDTH));
        double opacity = static_cast<double>(bin) / max_count;

        svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT,
                "blue", "green", opacity);
        top += BIN_HEIGHT;
    }

    svg_end();
}
*/

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;

    svg_begin(400, 300);
    double top = 0;

    for (size_t bin : bins) {
        const double bin_width = BLOCK_WIDTH * bin;
        if(bin_width> IMAGE_WIDTH) {
            const double bin_width= IMAGE_WIDTH - TEXT_WIDTH;
        }
        svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "blue", "green");
        top += BIN_HEIGHT;
    }
    svg_end();
}