4 files changed, 67 insertions, 12 deletions

diff --git a/application/config/ConfigJson.php b/application/config/ConfigJson.php
index 8c8d5610..4509357c 100644
--- a/application/config/ConfigJson.php
+++ b/application/config/ConfigJson.php
@@ -47,7 +47,7 @@ class ConfigJson implements ConfigIO
         $print = defined('JSON_PRETTY_PRINT') ? JSON_PRETTY_PRINT : 0;
         $data = self::getPhpHeaders() . json_encode($conf, $print) . self::getPhpSuffix();
         if (!file_put_contents($filepath, $data)) {
-            throw new \IOException(
+            throw new \Shaarli\Exceptions\IOException(
                 $filepath,
                 t('Shaarli could not create the config file. '.
                   'Please make sure Shaarli has the right to write in the folder is it installed in.')
diff --git a/application/config/ConfigManager.php b/application/config/ConfigManager.php
index 82f4a368..e6c35073 100644
--- a/application/config/ConfigManager.php
+++ b/application/config/ConfigManager.php
@@ -148,6 +148,33 @@ class ConfigManager
     }
 
     /**
+     * Remove a config element from the config file.
+     *
+     * @param string $setting    Asked setting, keys separated with dots.
+     * @param bool   $write      Write the new setting in the config file, default false.
+     * @param bool   $isLoggedIn User login state, default false.
+     *
+     * @throws \Exception Invalid
+     */
+    public function remove($setting, $write = false, $isLoggedIn = false)
+    {
+        if (empty($setting) || ! is_string($setting)) {
+            throw new \Exception(t('Invalid setting key parameter. String expected, got: '). gettype($setting));
+        }
+
+        // During the ConfigIO transition, map legacy settings to the new ones.
+        if ($this->configIO instanceof ConfigPhp && isset(ConfigPhp::$LEGACY_KEYS_MAPPING[$setting])) {
+            $setting = ConfigPhp::$LEGACY_KEYS_MAPPING[$setting];
+        }
+
+        $settings = explode('.', $setting);
+        self::removeConfig($settings, $this->loadedConfig);
+        if ($write) {
+            $this->write($isLoggedIn);
+        }
+    }
+
+    /**
      * Check if a settings exists.
      *
      * Supports nested settings with dot separated keys.
@@ -180,7 +207,7 @@ class ConfigManager
      *
      * @throws MissingFieldConfigException: a mandatory field has not been provided in $conf.
      * @throws UnauthorizedConfigException: user is not authorize to change configuration.
-     * @throws \IOException: an error occurred while writing the new config file.
+     * @throws \Shaarli\Exceptions\IOException: an error occurred while writing the new config file.
      */
     public function write($isLoggedIn)
     {
@@ -272,7 +299,7 @@ class ConfigManager
      *
      * @param array $settings Ordered array which contains keys to find.
      * @param mixed $value
-     * @param array $conf   Loaded settings, then sub-array.
+     * @param array $conf     Loaded settings, then sub-array.
      *
      * @return mixed Found setting or NOT_FOUND flag.
      */
@@ -290,6 +317,27 @@ class ConfigManager
     }
 
     /**
+     * Recursive function which find asked setting in the loaded config and deletes it.
+     *
+     * @param array $settings Ordered array which contains keys to find.
+     * @param array $conf     Loaded settings, then sub-array.
+     *
+     * @return mixed Found setting or NOT_FOUND flag.
+     */
+    protected static function removeConfig($settings, &$conf)
+    {
+        if (!is_array($settings) || count($settings) == 0) {
+            return self::$NOT_FOUND;
+        }
+
+        $setting = array_shift($settings);
+        if (count($settings) > 0) {
+            return self::removeConfig($settings, $conf[$setting]);
+        }
+        unset($conf[$setting]);
+    }
+
+    /**
      * Set a bunch of default values allowing Shaarli to start without a config file.
      */
     protected function setDefaultValues()
@@ -333,12 +381,12 @@ class ConfigManager
         // default state of the 'remember me' checkbox of the login form
         $this->setEmpty('privacy.remember_user_default', true);
 
-        $this->setEmpty('thumbnail.enable_thumbnails', true);
-        $this->setEmpty('thumbnail.enable_localcache', true);
-
         $this->setEmpty('redirector.url', '');
         $this->setEmpty('redirector.encode_url', true);
 
+        $this->setEmpty('thumbnails.width', '125');
+        $this->setEmpty('thumbnails.height', '90');
+
         $this->setEmpty('translation.language', 'auto');
         $this->setEmpty('translation.mode', 'php');
         $this->setEmpty('translation.extensions', []);
diff --git a/application/config/ConfigPhp.php b/application/config/ConfigPhp.php
index 8add8bcd..cad34594 100644
--- a/application/config/ConfigPhp.php
+++ b/application/config/ConfigPhp.php
@@ -27,7 +27,7 @@ class ConfigPhp implements ConfigIO
     /**
      * Map legacy config keys with the new ones.
      * If ConfigPhp is used, getting <newkey> will actually look for <legacykey>.
-     * The Updater will use this array to transform keys when switching to JSON.
+     * The updater will use this array to transform keys when switching to JSON.
      *
      * @var array current key => legacy key.
      */
@@ -104,19 +104,27 @@ class ConfigPhp implements ConfigIO
 
         // Store all $conf['config']
         foreach ($conf['config'] as $key => $value) {
-            $configStr .= '$GLOBALS[\'config\'][\''. $key .'\'] = '.var_export($conf['config'][$key], true).';'. PHP_EOL;
+            $configStr .= '$GLOBALS[\'config\'][\''
+                . $key
+                .'\'] = '
+                .var_export($conf['config'][$key], true).';'
+                . PHP_EOL;
         }
 
         if (isset($conf['plugins'])) {
             foreach ($conf['plugins'] as $key => $value) {
-                $configStr .= '$GLOBALS[\'plugins\'][\''. $key .'\'] = '.var_export($conf['plugins'][$key], true).';'. PHP_EOL;
+                $configStr .= '$GLOBALS[\'plugins\'][\''
+                    . $key
+                    .'\'] = '
+                    .var_export($conf['plugins'][$key], true).';'
+                    . PHP_EOL;
             }
         }
 
         if (!file_put_contents($filepath, $configStr)
             || strcmp(file_get_contents($filepath), $configStr) != 0
         ) {
-            throw new \IOException(
+            throw new \Shaarli\Exceptions\IOException(
                 $filepath,
                 t('Shaarli could not create the config file. '.
                   'Please make sure Shaarli has the right to write in the folder is it installed in.')
diff --git a/application/config/ConfigPlugin.php b/application/config/ConfigPlugin.php
index b3d9752b..dbb24937 100644
--- a/application/config/ConfigPlugin.php
+++ b/application/config/ConfigPlugin.php
@@ -34,8 +34,7 @@ function save_plugin_config($formData)
         // If there is no order, it means a disabled plugin has been enabled.
         if (isset($formData['order_' . $key])) {
             $plugins[(int) $formData['order_' . $key]] = $key;
-        }
-        else {
+        } else {
             $newEnabledPlugins[] = $key;
         }
     }