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[github/shaarli/Shaarli.git] / plugins / default_colors / default_colors.php

diff --git a/plugins/default_colors/default_colors.php b/plugins/default_colors/default_colors.php
index b898814be11690b32cbfe124a61fb43f7b678b59..574a0bd4df3170decd74967988d8d1c8fb8bb2cb 100644 (file)
--- a/plugins/default_colors/default_colors.php
+++ b/plugins/default_colors/default_colors.php
@@ -6,6 +6,7 @@
  * Allow users to easily overrides colors of the default theme.
  */
 
+use Shaarli\Config\ConfigManager;
 use Shaarli\Plugin\PluginManager;
 
 const DEFAULT_COLORS_PLACEHOLDERS = [
@@ -14,40 +15,95 @@ const DEFAULT_COLORS_PLACEHOLDERS = [
     'DEFAULT_COLORS_DARK_MAIN',
 ];
 
+const DEFAULT_COLORS_CSS_FILE = '/default_colors/default_colors.css';
+
 /**
- * When plugin parameters are saved
+ * Display an error if the plugin is active a no color is configured.
+ *
+ * @param $conf ConfigManager instance
+ *
+ * @return array|null The errors array or null of there is none.
  */
-function hook_default_colors_save_plugin_parameters($data)
+function default_colors_init($conf)
 {
-    $file = PluginManager::$PLUGINS_PATH . '/default_colors/default_colors.css';
-    $template = file_get_contents(PluginManager::$PLUGINS_PATH . '/default_colors/default_colors.css.template');
-    $content = '';
-    foreach (DEFAULT_COLORS_PLACEHOLDERS as $rule) {
-        $content .= ! empty($data[$rule])
-            ? default_colors_format_css_rule($data, $rule) .';'. PHP_EOL
-            : '';
+    $params = [];
+    foreach (DEFAULT_COLORS_PLACEHOLDERS as $placeholder) {
+        $value = trim($conf->get('plugins.' . $placeholder, ''));
+        if (strlen($value) > 0) {
+            $params[$placeholder] = $value;
+        }
+    }
+
+    if (empty($params)) {
+        $error = t('Default colors plugin error: ' .
+            'This plugin is active and no custom color is configured.');
+        return [$error];
+    }
+
+    // Colors are defined but the custom CSS file does not exist -> generate it
+    if (!file_exists(PluginManager::$PLUGINS_PATH . DEFAULT_COLORS_CSS_FILE)) {
+        default_colors_generate_css_file($params);
     }
-    file_put_contents($file, sprintf($template, $content));
-    return $data;
 }
 
 /**
- * When linklist is displayed, include isso CSS file.
+ * When linklist is displayed, include default_colors CSS file.
  *
  * @param array $data - header data.
  *
- * @return mixed - header data with isso CSS file added.
+ * @return mixed - header data with default_colors CSS file added.
  */
 function hook_default_colors_render_includes($data)
 {
     $file = PluginManager::$PLUGINS_PATH . '/default_colors/default_colors.css';
-    if (file_exists($file )) {
+    if (file_exists($file)) {
         $data['css_files'][] = $file ;
     }
 
     return $data;
 }
 
+/**
+ * Regenerate the custom CSS file with provided settings.
+ *
+ * @param array $params Plugin configuration (CSS rules)
+ */
+function default_colors_generate_css_file($params): void
+{
+    $file = PluginManager::$PLUGINS_PATH . '/default_colors/default_colors.css';
+    $template = file_get_contents(PluginManager::$PLUGINS_PATH . '/default_colors/default_colors.css.template');
+    $content = '';
+    foreach (DEFAULT_COLORS_PLACEHOLDERS as $rule) {
+        $content .= !empty($params[$rule])
+            ? default_colors_format_css_rule($params, $rule) . ';' . PHP_EOL
+            : '';
+    }
+
+    if (! empty($content)) {
+        file_put_contents($file, sprintf($template, $content));
+    }
+}
+
+/**
+ * Create a valid CSS rule from parameters settings and plugin parameter.
+ *
+ * @param array  $data      $_POST array
+ * @param string $parameter Plugin parameter name
+ *
+ * @return string CSS rules for the provided parameter and its matching value.
+ */
+function default_colors_format_css_rule($data, $parameter)
+{
+    if (empty($data[$parameter])) {
+        return '';
+    }
+
+    $key = str_replace('DEFAULT_COLORS_', '', $parameter);
+    $key = str_replace('_', '-', strtolower($key)) . '-color';
+    return '  --' . $key . ': ' . $data[$parameter];
+}
+
+
 /**
  * This function is never called, but contains translation calls for GNU gettext extraction.
  */
@@ -59,10 +115,3 @@ function default_colors_translation()
     t('Background color (light grey)');
     t('Dark main color (e.g. visited links)');
 }
-
-function default_colors_format_css_rule($data, $parameter)
-{
-    $key = str_replace('DEFAULT_COLORS_', '', $parameter);
-    $key = str_replace('_', '-', strtolower($key)) .'-color';
-    return '  --'. $key .': '. $data[$parameter];
-}