<?php
/**
 * webtrees: online genealogy
 * Copyright (C) 2018 webtrees development team
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
declare(strict_types=1);

namespace Fisharebest\Webtrees\Statistics\Google;

use Fisharebest\Webtrees\I18N;
use Fisharebest\Webtrees\Statistics\AbstractGoogle;
use Fisharebest\Webtrees\Theme;
use Fisharebest\Webtrees\Tree;

/**
 *
 */
class ChartCommonSurname extends AbstractGoogle
{
    /**
     * @var Tree
     */
    private $tree;

    /**
     * Constructor.
     *
     * @param Tree $tree
     */
    public function __construct(Tree $tree)
    {
        $this->tree = $tree;
    }

    /**
     * Create a chart of common surnames.
     *
     * @param int         $tot_indi     The total number of individuals
     * @param array       $all_surnames The list of common surnames
     * @param string|null $size
     * @param string|null $color_from
     * @param string|null $color_to
     *
     * @return string
     */
    public function chartCommonSurnames(
        int $tot_indi,
        array $all_surnames,
        string $size = null,
        string $color_from = null,
        string $color_to = null
    ): string {
        $chart_color1 = (string) Theme::theme()->parameter('distribution-chart-no-values');
        $chart_color2 = (string) Theme::theme()->parameter('distribution-chart-high-values');
        $chart_x      = Theme::theme()->parameter('stats-small-chart-x');
        $chart_y      = Theme::theme()->parameter('stats-small-chart-y');

        $size       = $size ?? ($chart_x . 'x' . $chart_y);
        $color_from = $color_from ?? $chart_color1;
        $color_to   = $color_to ?? $chart_color2;
        $sizes      = explode('x', $size);

        if (empty($all_surnames)) {
            return '';
        }

        $surname_tradition = $this->tree->getPreference('SURNAME_TRADITION');

        $tot = 0;

        foreach ($all_surnames as $surn => $surnames) {
            $tot += array_sum($surnames);
        }

        $chd = '';
        $chl = [];

        /** @var array $surns */
        foreach ($all_surnames as $surns) {
            $count_per = 0;
            $max_name  = 0;
            $top_name  = '';

            foreach ($surns as $spfxsurn => $count) {
                $per = $count;
                $count_per += $per;

                // select most common surname from all variants
                if ($per > $max_name) {
                    $max_name = $per;
                    $top_name = $spfxsurn;
                }
            }

            if ($surname_tradition === 'polish') {
                // Most common surname should be in male variant (Kowalski, not Kowalska)
                $top_name = preg_replace([
                    '/ska$/',
                    '/cka$/',
                    '/dzka$/',
                    '/żka$/',
                ], [
                    'ski',
                    'cki',
                    'dzki',
                    'żki',
                ], $top_name);
            }

            $per   = intdiv(100 * $count_per, $tot_indi);
            $chd .= $this->arrayToExtendedEncoding([$per]);
            $chl[] = $top_name . ' - ' . I18N::number($count_per);
        }

        $per   = intdiv(100 * ($tot_indi - $tot), $tot_indi);
        $chd .= $this->arrayToExtendedEncoding([$per]);
        $chl[] = I18N::translate('Other') . ' - ' . I18N::number($tot_indi - $tot);

        $chart_title = implode(I18N::$list_separator, $chl);
        $chl         = rawurlencode(implode('|', $chl));
        $colors      = [$color_from, $color_to];

        return view(
            'statistics/other/chart-google',
            [
                'chart_title' => $chart_title,
                'chart_url'   => $this->getPieChartUrl($chd, $size, $colors, $chl),
                'sizes'       => $sizes,
            ]
        );
    }
}