#include "svg.h"
#include "text.h"
void svg_begin(double width, double height) {
    std::cout << "<?xml version='1.0' encoding='UTF-8'?>\n";
    std::cout << "<svg ";
    std::cout << "width='" << width << "' ";
    std::cout << "height='" << height << "' ";
    std::cout << "viewBox='0 0 " << width << " " << height << "' ";
    std::cout << "xmlns='http://www.w3.org/2000/svg'>\n";
}

void svg_end() {
    std::cout << "</svg>\n";
}
void svg_text(double left, double baseline, std::string text) {
    std::cout << "<text x='" << left << "' y='"<< baseline <<"'>" << text<<"</text>";
}

void show_histogram_svg(const std::vector<size_t>& bins, int TEXT_WIDTH) {
    const auto IMAGE_WIDTH = 400;
    const auto IMAGE_HEIGHT = 300;
    const auto TEXT_LEFT = 20;
    const auto TEXT_BASELINE = 20;
    const auto BIN_HEIGHT = 30;
    const auto TEXT_GAP = 10;

    svg_begin(IMAGE_WIDTH, IMAGE_HEIGHT);

    size_t maxCount = maxBin(bins);
    double top = 0;
    for (size_t bin : bins) {
         const double bin_width = (IMAGE_WIDTH - TEXT_WIDTH - TEXT_GAP) * (bin / double(maxCount));
        svg_text(TEXT_LEFT, top + TEXT_BASELINE, std::to_string(bin));
        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT,"red","#006B3C");
        top += BIN_HEIGHT;
    }
    svg_end();
}

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