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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Nextcloud - OCR  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * This file is licensed under the Affero General Public License version 3 or  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * later. See the COPYING file.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *   | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author Janis Koehr <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @copyright Janis Koehr 2017  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace OCA\Ocr\Service;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use \OCP\IConfig;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OCP\IL10N;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OCA\Ocr\Constants\OcrConstants;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class AppConfigService { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $appName = 'ocr';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var IConfig  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $config;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var IL10N  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $l10n;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Constructor  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *   | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param IConfig $config              | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param IL10N $l10n              | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function __construct(IConfig $config, IL10N $l10n) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->config = $config;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->l10n = $l10n;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Get a value by key  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *   | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string $key              | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getAppValue($key) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->config->getAppValue($this->appName, $key);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Evaluate if all redis related settings are set.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *   | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return boolean  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function evaluateRedisSettings() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($this->config->getAppValue($this->appName, OcrConstants::REDIS_CONFIG_KEY_HOST) !== '' &&  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                 $this->config->getAppValue($this->appName, OcrConstants::REDIS_CONFIG_KEY_PORT) !== '' &&  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                 $this->config->getAppValue($this->appName, OcrConstants::REDIS_CONFIG_KEY_DB) !== '') { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return true;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return false;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Set a value by key  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *   | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string $key              | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string $value              | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function setAppValue($key, $value) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($key === OcrConstants::LANGUAGES_CONFIG_KEY) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if (!preg_match('/^(([a-z]{3,4}|[a-z]{3,4}\-[a-z]{3,4});)*([a-z]{3,4}|[a-z]{3,4}\-[a-z]{3,4})$/', $value)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                throw new NotFoundException($this->l10n->t('The languages are not specified in the correct format.')); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($key === OcrConstants::REDIS_CONFIG_KEY_HOST) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if (!preg_match(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    '/(^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$|^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9])$)/',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    $value)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                throw new NotFoundException($this->l10n->t('The redis host is not specified in the correct format.')); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
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                        if ($key === OcrConstants::REDIS_CONFIG_KEY_PORT) { | 
            
                            
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                            $value = intval($value);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if (!($value > 0 && $value < 65535)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                throw new NotFoundException(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        $this->l10n->t('The redis port number is not specified in the correct format.')); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
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                        if ($key === OcrConstants::REDIS_CONFIG_KEY_DB) { | 
            
                            
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                            $value = intval($value);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if (!($value >= 0)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                throw new NotFoundException($this->l10n->t('The redis db is not specified in the correct format.')); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->config->setAppValue($this->appName, $key, $value);  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    }  | 
            
            
                                                        
            
                                    
            
            
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                }  | 
            
            
                        
Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.