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

void show_histogram_svg(const vector<size_t>& bins, const vector<double>& numbers, size_t& bin_count) {
    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;
    size_t max_bin_capacity{};
    find_max_capacity(bins, max_bin_capacity);
    double range_border = 0;
    for (size_t i = 0; i < bins.size(); i++) {
        const double bin_width = (IMAGE_WIDTH - TEXT_WIDTH) * (static_cast<double>(bins[i]) / max_bin_capacity);
        if (i != 0)
        {
            find_range_border(numbers, bin_count, i, range_border);
            svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(range_border));
            top += BIN_HEIGHT;
        }
        svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bins[i]));
        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "purple", "#ffcc00");
        top += BIN_HEIGHT;
    }
    svg_end();
}