xref: /webtrees/app/Http/Middleware/UseTheme.php (revision 362b84648b116e80ad8951484a8cb04147899fad) 
1<?php
2/**
3 * webtrees: online genealogy
4 * Copyright (C) 2019 webtrees development team
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16declare(strict_types=1);
17
18namespace Fisharebest\Webtrees\Http\Middleware;
19
20use Closure;
21use Fisharebest\Webtrees\Module\ModuleThemeInterface;
22use Fisharebest\Webtrees\Module\WebtreesTheme;
23use Fisharebest\Webtrees\Services\ModuleService;
24use Fisharebest\Webtrees\Session;
25use Fisharebest\Webtrees\Site;
26use Fisharebest\Webtrees\Tree;
27use Generator;
28use Symfony\Component\HttpFoundation\Request;
29use Symfony\Component\HttpFoundation\Response;
30use Throwable;
31
32/**
33 * Middleware to set a global theme.
34 */
35class UseTheme implements MiddlewareInterface
36{
37    /** @var ModuleService */
38    private $module_service;
39
40    /**
41     * UseTheme constructor.
42     *
43     * @param ModuleService $module_service
44     */
45    public function __construct(ModuleService $module_service)
46    {
47        $this->module_service = $module_service;
48    }
49
50    /**
51     * @param Request $request
52     * @param Closure $next
53     *
54     * @return Response
55     * @throws Throwable
56     */
57    public function handle(Request $request, Closure $next): Response
58    {
59        foreach ($this->themes() as $theme) {
60            if ($theme instanceof ModuleThemeInterface) {
61                // Bind this theme into the container
62                app()->instance(ModuleThemeInterface::class, $theme);
63
64                // Remember this setting
65                Session::put('theme_id', $theme->name());
66
67                break;
68            }
69        }
70
71        return $next($request);
72    }
73
74    /**
75     * The theme can be chosen in various ways.
76     *
77     * @return Generator
78     */
79    private function themes(): Generator
80    {
81        $themes = $this->module_service->findByInterface(ModuleThemeInterface::class);
82
83        // Last theme used
84        yield $themes->get(Session::get('theme_id', ''));
85
86        // Default for tree
87        $tree = app(Tree::class);
88
89        if ($tree instanceof Tree) {
90            yield $themes->get($tree->getPreference('THEME_DIR'));
91        }
92
93        // Default for site
94        yield $themes->get(Site::getPreference('THEME_DIR'));
95
96        // Default for application
97        yield app(WebtreesTheme::class);
98    }
99}
100