Hokan22 /
laravel-translator
| Total Complexity | 44 |
| Total Lines | 352 |
| Duplicated Lines | 0 % |
| Changes | 7 | ||
| Bugs | 3 | Features | 0 |
Complex classes like Translator often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Translator, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 34 | class Translator |
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| 35 | { |
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| 36 | /** @var array|HandlerInterface[] $aHandler Class to Handle the Translation defined in config */ |
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| 37 | protected $aHandler = []; |
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| 38 | /** @var string $locale The locale to translate to */ |
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| 39 | protected $locale = ''; |
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| 40 | /** @var string $group The translation group */ |
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| 41 | protected $group = 'default'; |
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| 42 | /** @var string $configName The name of the config file */ |
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| 43 | protected $configName = 'translator'; |
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| 44 | /** @var array $config Config cache */ |
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| 45 | protected $config; |
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| 46 | |||
| 47 | /** |
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| 48 | * Translator constructor. |
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| 49 | * |
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| 50 | * @param string $locale The locale to translate to |
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| 51 | * |
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| 52 | * @throws \Exception |
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| 53 | */ |
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| 54 | public function __construct($locale = '') |
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| 59 | } |
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| 60 | |||
| 61 | /** |
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| 62 | * Return the config value for given key |
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| 63 | * |
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| 64 | * @param string $key Key for the config value to get |
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| 65 | * |
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| 66 | * @return string|array Config value for $key |
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| 67 | */ |
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| 68 | public function getConfigValue($key) |
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| 69 | { |
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| 70 | return $this->config[$key]; |
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| 71 | } |
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| 72 | |||
| 73 | /** |
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| 74 | * Actual translate function |
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| 75 | * $parameter and $locale are optional |
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| 76 | * |
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| 77 | * @param string $identifier The identifier of the translation |
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| 78 | * @param array|null $parameters The parameters to inject into the translation |
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| 79 | * @param string $locale The locale to which to translate to overrides the class location for one translation |
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| 80 | * |
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| 81 | * @throws \Exception |
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| 82 | * |
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| 83 | * @return string Returns the translation with replaced parameters |
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| 84 | * |
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| 85 | * @todo Make function Parameters interchangeable |
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| 86 | */ |
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| 87 | public function translate($identifier, $parameters = null, $locale = null) |
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| 88 | { |
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| 89 | // Validate the locale given as parameter or take the saved locale |
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| 90 | if ($locale !== null) { |
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| 91 | $locale = $this->validateLocale($locale); |
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| 92 | } else { |
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| 93 | $locale = $this->locale; |
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| 94 | } |
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| 95 | |||
| 96 | //Create a Handler if no one exists for the current locale |
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| 97 | if (!isset($this->aHandler[$locale])) { |
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| 98 | $this->aHandler[$locale] = $this->createHandler($locale); |
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| 99 | } |
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| 100 | |||
| 101 | // Try getting the resulting Translation |
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| 102 | // Based on the internal translate function, the getTranslation can throw exceptions |
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| 103 | try { |
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| 104 | $translation = $this->aHandler[$locale]->getTranslation($identifier, $this->group); |
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| 105 | |||
| 106 | } catch (NotFoundResourceException $exception) { |
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| 107 | // Thrown when the Identifier wasn't found |
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| 108 | // Log exception as error in Laravel log |
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| 109 | $this->log($exception, 'error'); |
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| 110 | |||
| 111 | // Listener: When app is not in production and listening is enabled |
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| 112 | // add any missing translation identifier to the database |
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| 113 | if ($this->config['listening_enabled'] === true) { |
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| 114 | $this->addMissingIdentifier($identifier, $parameters, 'default'); |
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| 115 | } |
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| 116 | |||
| 117 | return $this->returnMissingTranslation($identifier, $locale); |
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| 118 | |||
| 119 | } catch (TranslationNotFoundException $exception) { |
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| 120 | // Thrown when no translation for the locale was found |
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| 121 | // Log exception as error in Laravel log |
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| 122 | $this->log($exception, 'error'); |
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| 123 | |||
| 124 | return $this->returnMissingTranslation($identifier, $locale); |
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| 125 | } |
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| 126 | |||
| 127 | // If there are no parameters, skip replacement |
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| 128 | if (is_array($parameters)) { |
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| 129 | $translation = $this->replaceParameter($translation, $parameters); |
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| 130 | } |
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| 131 | |||
| 132 | // Return the translation |
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| 133 | return $translation; |
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| 134 | } |
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| 135 | |||
| 136 | /** |
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| 137 | * Creates the Handler for the given locale |
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| 138 | * |
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| 139 | * @param string $locale The locale for which to create a handler |
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| 140 | * |
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| 141 | * @return HandlerInterface |
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| 142 | */ |
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| 143 | protected function createHandler($locale) |
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| 144 | { |
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| 145 | // Get the Handler class from config file |
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| 146 | $handler_class = $this->config['handler']; |
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| 147 | // Define message as empty for later check |
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| 148 | $oHandler = null; |
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| 149 | |||
| 150 | // Try to create new Instance of Handler and return it |
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| 151 | // If creating the Handler fails or it does not implement HandlerInterface the DatabaseHandler will be used |
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| 152 | try { |
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| 153 | $oHandler = new $handler_class($locale); |
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| 154 | if (!is_a($handler_class, 'Hokan22\LaravelTranslator\Handler\HandlerInterface', true)) { |
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| 155 | throw new \Exception($handler_class . ' does not implement HandlerInterface!'); |
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| 156 | } |
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| 157 | } catch (\Exception $exception) { |
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| 158 | // Log error and fallback procedure |
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| 159 | $this->log($exception, 'error'); |
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| 160 | $this->log('Falling back to DatabaseHandler', 'warning'); |
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| 161 | |||
| 162 | // Fallback to Database Handler |
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| 163 | $oHandler = new DatabaseHandler($locale); |
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| 164 | } |
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| 165 | return $oHandler; |
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| 166 | } |
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| 167 | |||
| 168 | /** |
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| 169 | * Set the locale to use in translations |
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| 170 | * |
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| 171 | * @param string $locale The locale to use |
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| 172 | */ |
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| 173 | public function setLocale($locale) |
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| 174 | { |
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| 175 | $locale = $this->validateLocale($locale); |
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| 176 | |||
| 177 | if (!isset($this->aHandler[$locale])) { |
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| 178 | $this->aHandler[$locale] = $this->createHandler($locale); |
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| 179 | } |
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| 180 | |||
| 181 | $this->locale = $locale; |
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| 182 | } |
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| 183 | |||
| 184 | /** |
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| 185 | * Add the missing identifier to the texts table in the database |
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| 186 | * |
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| 187 | * @param string $identifier The identifier to add to the db |
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| 188 | * @param array $parameters The parameters available for the translation |
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| 189 | * @param string $group The group to put the identifier in |
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| 190 | */ |
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| 191 | public function addMissingIdentifier($identifier, $parameters, $group) |
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| 192 | { |
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| 193 | if (!$this->hasIdentifier($identifier)) { |
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| 194 | |||
| 195 | // Save only the keys from the parameter array |
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| 196 | $keys = []; |
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| 197 | if (is_array($parameters)) { |
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| 198 | foreach($parameters as $key => $value) { |
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| 199 | $keys[] = $key; |
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| 200 | } |
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| 201 | } |
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| 202 | // Create new TranslationIdentifier with parameters and current url |
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| 203 | TranslationIdentifier::create( |
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| 204 | [ |
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| 205 | "identifier" => $identifier, |
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| 206 | "parameters" => $keys, |
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| 207 | "group" => isset($group) ? $group : 'default', |
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| 208 | "page_name" => app()->runningInConsole() ? '' : substr(request()->getRequestUri(), 1), |
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| 209 | ] |
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| 210 | ); |
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| 211 | |||
| 212 | if (isset($this->aHandler[$this->locale])) { |
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| 213 | // refresh the Cache for the handler |
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| 214 | // When using file Cache, adding the Identifier to the Database will not add it to file Cache! |
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| 215 | $this->aHandler[$this->locale]->refreshCache(); |
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| 216 | } |
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| 217 | // Print notice about creation to laravel log |
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| 218 | $this->log('The translation string "'.$identifier.'" will be written to the Database', 'notice'); |
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| 219 | } else { |
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| 220 | $this->log('The translation string "'.$identifier.'" is already in the Database!', 'warning'); |
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| 221 | } |
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| 222 | } |
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| 223 | |||
| 224 | /** |
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| 225 | * Check if the identifier exists in the database |
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| 226 | * |
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| 227 | * @param string $identifier The identifier to check |
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| 228 | * |
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| 229 | * @return boolean Returns true if the identifier was found |
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| 230 | */ |
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| 231 | public function hasIdentifier($identifier) |
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| 232 | { |
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| 233 | // Returns true if at least one identifier was found |
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| 234 | return TranslationIdentifier::where('identifier', $identifier)->count() > 0; |
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| 235 | } |
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| 236 | |||
| 237 | /** |
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| 238 | * Replace the parameters in the translation |
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| 239 | * |
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| 240 | * @param string $translation The translation with the parameter tags |
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| 241 | * @param array $parameters The parameters which to inject in the translation |
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| 242 | * |
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| 243 | * @return string Returns the translation which its parameters replaced |
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| 244 | * |
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| 245 | * @todo Make Prefix and Suffix configurable |
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| 246 | */ |
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| 247 | protected function replaceParameter($translation, $parameters) |
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| 255 | } |
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| 256 | |||
| 257 | /** |
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| 258 | * Instead of the translation echo back 'Missing Translation' (when not in production!) |
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| 259 | * and show the translation identifier ($identifier) and the locale |
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| 260 | * |
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| 261 | * @param string $identifier The identifier which is missing |
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| 262 | * @param string $locale The locale of which the translation is missing |
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| 263 | * |
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| 264 | * @throws \Exception |
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| 265 | * |
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| 266 | * @return string The string to display instead of the translation |
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| 267 | */ |
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| 268 | protected function returnMissingTranslation($identifier, $locale) |
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| 275 | } |
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| 276 | |||
| 277 | /** |
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| 278 | * Checks the given locale and returns a valid local |
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| 279 | * If no locale was given, first try the locale from the session |
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| 280 | * If the Session has no |
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| 281 | * |
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| 282 | * @param string $locale The locale to validate |
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| 283 | * |
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| 284 | * @throws NotFoundResourceException |
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| 285 | * |
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| 286 | * @return string Returns the validated Locale |
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| 287 | */ |
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| 288 | protected function validateLocale($locale) |
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| 289 | { |
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| 290 | // Set message for later log warning |
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| 291 | $message = ''; |
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| 292 | |||
| 293 | //Get Locales configs from translator config file |
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| 294 | $avail_locales = $this->config['available_locales']; |
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| 295 | $default_locale = $this->config['default_locale']; |
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| 296 | |||
| 297 | // If locale is already set and not empty it has already been checked |
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| 298 | if ($this->locale == $locale && $this->locale !== '') { |
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| 299 | return $locale; |
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| 300 | } |
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| 301 | |||
| 302 | // Fallback if empty locale was given (should be handled in middleware) |
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| 303 | if ($locale == null){ |
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| 304 | if (session()->get('locale') != '') { |
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| 305 | $locale = session()->get('locale'); |
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| 306 | } |
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| 307 | else { |
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| 308 | return $default_locale; |
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| 309 | } |
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| 310 | } |
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| 311 | |||
| 312 | // If the given locale is not defined as valid, try to get a fallback locale |
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| 313 | if (!in_array($locale, $avail_locales)){ |
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| 314 | |||
| 315 | $found_locales = []; |
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| 316 | |||
| 317 | // Find any available locale which contains the locale as substring |
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| 318 | foreach ($avail_locales as $avail_locale) { |
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| 319 | if (strpos($avail_locale, $locale) !== false){ |
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| 320 | $found_locales[] = $avail_locale; |
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| 321 | } |
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| 322 | } |
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| 323 | |||
| 324 | // Check if default locale is inside the found locales. If it was, use it! |
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| 325 | if (in_array($default_locale, $found_locales)){ |
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| 326 | $message = 'Locale "'.$locale.'" was not found! Falling back to default locale "'.$default_locale.'"'; |
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| 327 | $locale = $default_locale; |
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| 328 | |||
| 329 | // Check if any Locale containing '$locale' was found previously |
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| 330 | } elseif (count($found_locales, 0) >= 1) { |
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| 331 | $message = 'Locale "'.$locale.'" was not found! Falling back to similar locale "'.$found_locales[0].'"'; |
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| 332 | $locale = $found_locales[0]; |
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| 333 | } else { |
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| 334 | throw new NotFoundResourceException("Locale '".$locale."' was not found in available locales"); |
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| 335 | } |
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| 336 | } |
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| 337 | |||
| 338 | if ($message !== '') $this->log($message, 'warning'); |
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| 339 | |||
| 340 | return $locale; |
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| 341 | } |
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| 342 | |||
| 343 | /** |
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| 344 | * Returns all translation in the in $locale from $group |
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| 345 | * |
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| 346 | * @param string $locale The locale of the translations to get |
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| 347 | * @param string $group The group of the translations to get |
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| 348 | * |
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| 349 | * @return array|mixed Returns an array of all translation in the $locale from group $group |
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| 350 | */ |
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| 351 | public function getAllTranslations($locale, $group) |
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| 358 | } |
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| 359 | |||
| 360 | /** |
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| 361 | * Log the given exception or string $exception as type $log_type when config log_level is set to debug |
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| 362 | * |
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| 363 | * @param \Exception|string $exception The Exception to log |
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| 364 | * @param string $log_type The type of the log to write in the log file |
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| 365 | * |
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| 366 | */ |
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| 367 | protected function log($exception, $log_type = 'notice') |
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| 388 | } |
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