xref: /webtrees/app/Module/AbstractModule.php (revision 44200a7b9242210810467b54531a33d16ad2eff4) 
1<?php
2
3/**
4 * webtrees: online genealogy
5 * Copyright (C) 2020 webtrees development team
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18declare(strict_types=1);
19
20namespace Fisharebest\Webtrees\Module;
21
22use Fisharebest\Webtrees\Auth;
23use Fisharebest\Webtrees\Registry;
24use Fisharebest\Webtrees\Http\ViewResponseTrait;
25use Fisharebest\Webtrees\Tree;
26use Fisharebest\Webtrees\Webtrees;
27use Illuminate\Database\Capsule\Manager as DB;
28use Illuminate\Support\Collection;
29use stdClass;
30
31/**
32 * Class AbstractModule - common functions for blocks
33 */
34abstract class AbstractModule implements ModuleInterface
35{
36    use ViewResponseTrait;
37
38    /** @var string A unique internal name for this module (based on the installation folder). */
39    private $name = '';
40
41    /** @var int The default access level for this module.  It can be changed in the control panel. */
42    protected $access_level = Auth::PRIV_PRIVATE;
43
44    /** @var bool The default status for this module.  It can be changed in the control panel. */
45    private $enabled = true;
46
47    /** @var string For custom modules - optional (recommended) version number */
48    public const CUSTOM_VERSION = '';
49
50    /** @var string For custom modules - link for support, upgrades, etc. */
51    public const CUSTOM_WEBSITE = '';
52
53    /**
54     * Called for all *enabled* modules.
55     */
56    public function boot(): void
57    {
58    }
59
60    /**
61     * How should this module be identified in the control panel, etc.?
62     *
63     * @return string
64     */
65    public function title(): string
66    {
67        return 'Module name goes here';
68    }
69
70    /**
71     * A sentence describing what this module does.
72     *
73     * @return string
74     */
75    public function description(): string
76    {
77        return $this->title();
78    }
79
80    /**
81     * Get a block setting.
82     *
83     * Originally, this was just used for the home-page blocks.  Now, it is used by any
84     * module that has repeated blocks of content on the same page.
85     *
86     * @param int    $block_id
87     * @param string $setting_name
88     * @param string $default
89     *
90     * @return string
91     */
92    final protected function getBlockSetting(int $block_id, string $setting_name, string $default = ''): string
93    {
94        $settings = Registry::cache()->array()->remember('block-setting-' . $block_id, static function () use ($block_id): array {
95            return DB::table('block_setting')
96                ->where('block_id', '=', $block_id)
97                ->pluck('setting_value', 'setting_name')
98                ->all();
99        });
100
101        return $settings[$setting_name] ?? $default;
102    }
103
104    /**
105     * Set a block setting.
106     *
107     * @param int    $block_id
108     * @param string $setting_name
109     * @param string $setting_value
110     *
111     * @return $this
112     */
113    final protected function setBlockSetting(int $block_id, string $setting_name, string $setting_value): self
114    {
115        DB::table('block_setting')->updateOrInsert([
116            'block_id'      => $block_id,
117            'setting_name'  => $setting_name,
118        ], [
119            'setting_value' => $setting_value,
120        ]);
121
122        return $this;
123    }
124
125    /**
126     * A unique internal name for this module (based on the installation folder).
127     *
128     * @param string $name
129     *
130     * @return void
131     */
132    final public function setName(string $name): void
133    {
134        $this->name = $name;
135    }
136
137    /**
138     * A unique internal name for this module (based on the installation folder).
139     *
140     * @return string
141     */
142    final public function name(): string
143    {
144        return $this->name;
145    }
146
147    /**
148     * Modules are either enabled or disabled.
149     *
150     * @param bool $enabled
151     *
152     * @return ModuleInterface
153     */
154    final public function setEnabled(bool $enabled): ModuleInterface
155    {
156        $this->enabled = $enabled;
157
158        return $this;
159    }
160
161    /**
162     * Modules are either enabled or disabled.
163     *
164     * @return bool
165     */
166    final public function isEnabled(): bool
167    {
168        return $this->enabled;
169    }
170
171    /**
172     * Should this module be enabled when it is first installed?
173     *
174     * @return bool
175     */
176    public function isEnabledByDefault(): bool
177    {
178        return true;
179    }
180
181    /**
182     * Get a module setting. Return a default if the setting is not set.
183     *
184     * @param string $setting_name
185     * @param string $default
186     *
187     * @return string
188     */
189    final public function getPreference(string $setting_name, string $default = ''): string
190    {
191        return DB::table('module_setting')
192            ->where('module_name', '=', $this->name())
193            ->where('setting_name', '=', $setting_name)
194            ->value('setting_value') ?? $default;
195    }
196
197    /**
198     * Set a module setting.
199     *
200     * Since module settings are NOT NULL, setting a value to NULL will cause
201     * it to be deleted.
202     *
203     * @param string $setting_name
204     * @param string $setting_value
205     *
206     * @return void
207     */
208    final public function setPreference(string $setting_name, string $setting_value): void
209    {
210        DB::table('module_setting')->updateOrInsert([
211            'module_name'  => $this->name(),
212            'setting_name' => $setting_name,
213        ], [
214            'setting_value' => $setting_value,
215        ]);
216    }
217
218    /**
219     * Get a the current access level for a module
220     *
221     * @param Tree   $tree
222     * @param string $interface
223     *
224     * @return int
225     */
226    final public function accessLevel(Tree $tree, string $interface): int
227    {
228        $access_levels = Registry::cache()->array()
229            ->remember('module-privacy-' . $tree->id(), static function () use ($tree): Collection {
230                return DB::table('module_privacy')
231                    ->where('gedcom_id', '=', $tree->id())
232                    ->get();
233            });
234
235        $row = $access_levels->first(function (stdClass $row) use ($interface): bool {
236            return $row->interface === $interface && $row->module_name === $this->name();
237        });
238
239        return $row ? (int) $row->access_level : $this->access_level;
240    }
241
242    /**
243     * Where does this module store its resources
244     *
245     * @return string
246     */
247    public function resourcesFolder(): string
248    {
249        return Webtrees::ROOT_DIR . 'resources/';
250    }
251}
252