3 * @copyright Copyright (C) 2010-2023, the Friendica project
5 * @license GNU AGPL version 3 or any later version
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU Affero General Public License as
9 * published by the Free Software Foundation, either version 3 of the
10 * License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU Affero General Public License for more details.
17 * You should have received a copy of the GNU Affero General Public License
18 * along with this program. If not, see <https://www.gnu.org/licenses/>.
22 namespace Friendica\Core\Config\Capability;
24 use Friendica\Core\Config\Exception\ConfigPersistenceException;
25 use Friendica\Core\Config\ValueObject\Cache;
28 * Interface for accessing system-wide configurations
30 interface IManageConfigValues
33 * Reloads all configuration values (from filesystem and environment variables)
35 * All configuration values of the system are stored in the cache.
39 * @throws ConfigPersistenceException In case the persistence layer throws errors
41 public function reload();
44 * Get a particular user's config variable given the category name
47 * Get a particular config value from the given category ($cat)
49 * @param string $cat The category of the configuration value
50 * @param string $key The configuration key to query
51 * @param mixed $default_value Deprecated, use `Config->get($cat, $key, null, $refresh) ?? $default_value` instead
53 * @return mixed Stored value or null if it does not exist
55 * @throws ConfigPersistenceException In case the persistence layer throws errors
58 public function get(string $cat, string $key, $default_value = null);
61 * Sets a configuration value for system config
63 * Stores a config value ($value) in the category ($cat) under the key ($key)
65 * Note: Please do not store booleans - convert to 0/1 integer values!
67 * @param string $cat The category of the configuration value
68 * @param string $key The configuration key to set
69 * @param mixed $value The value to store
70 * @param bool $autosave If true, implicit save the value
72 * @return bool Operation success
74 * @throws ConfigPersistenceException In case the persistence layer throws errors
76 public function set(string $cat, string $key, $value, bool $autosave = true): bool;
79 * Save back the overridden values of the config cache
81 * @throws ConfigPersistenceException In case the persistence layer throws errors
83 public function save();
86 * Deletes the given key from the system configuration.
88 * Removes the configured value from the stored cache in the cache and removes it from the database.
90 * @param string $cat The category of the configuration value
91 * @param string $key The configuration key to delete
92 * @param bool $autosave If true, implicit save the value
96 * @throws ConfigPersistenceException In case the persistence layer throws errors
99 public function delete(string $cat, string $key, bool $autosave = true): bool;
102 * Returns the Config Cache
106 public function getCache(): Cache;