<?php
/**
 * webtrees: online genealogy
 * Copyright (C) 2019 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 function count;
use Fisharebest\Webtrees\I18N;
use Fisharebest\Webtrees\Statistics\Service\ColorService;

/**
 * A chart showing the mortality.
 */
class ChartMortality
{
    /**
     * @var ColorService
     */
    private $color_service;

    /**
     * Constructor.
     */
    public function __construct()
    {
        $this->color_service = new ColorService();
    }

    /**
     * Create a chart showing mortality.
     *
     * @param int         $tot_l
     * @param int         $tot_d
     * @param string|null $color_living
     * @param string|null $color_dead
     *
     * @return string
     */
    public function chartMortality(
        int $tot_l,
        int $tot_d,
        string $color_living = null,
        string $color_dead = null
    ): string {
        $color_living = $color_living ?? '#ffffff';
        $color_dead   = $color_dead   ?? '#cccccc';

        $data = [
            [
                I18N::translate('Century'),
                I18N::translate('Total')
            ]
        ];

        if ($tot_l || $tot_d) {
            $data[] = [
                I18N::translate('Living'),
                $tot_l
            ];

            $data[] =  [
                I18N::translate('Dead'),
                $tot_d
            ];
        }

        $colors = $this->color_service->interpolateRgb($color_living, $color_dead, count($data) - 1);

        return view(
            'statistics/other/charts/pie',
            [
                'title'            => null,
                'data'             => $data,
                'colors'           => $colors,
                'labeledValueText' => 'percentage',
            ]
        );
    }
}