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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Tworzenieweb\SqlProvisioner\Filesystem;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\Filesystem\Filesystem;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\Finder\Finder;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author Luke Adamczewski  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @package Tworzenieweb\SqlProvisioner\Filesystem  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class WorkingDirectory  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    const DRAFT_CONTENT = <<<DRAFT  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                DATABASE_USER=[user]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                DATABASE_PASSWORD=[password]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                DATABASE_HOST=[host]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                DATABASE_PORT=[port]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                DATABASE_NAME=[database]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                PROVISIONING_TABLE=changelog_database_deployments  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                PROVISIONING_TABLE_CANDIDATE_NUMBER_COLUMN=deploy_script_number  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                DRAFT;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    const FILE_SUFFIX = '.env';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /** @var string */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $currentDirectory;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /** @var Filesystem */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $filesystem;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /** @var string */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $currentDirectoryAbsolute;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /** @var EnvironmentLoaderInterface */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $environmentLoader;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string                     $currentDirectory  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param CandidatesFinder           $finder  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param Filesystem                 $filesystem  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param EnvironmentLoaderInterface $environmentLoader  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function __construct($currentDirectory, CandidatesFinder $finder, Filesystem $filesystem, EnvironmentLoaderInterface $environmentLoader)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->currentDirectory = $currentDirectory;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->filesystem = $filesystem;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->currentDirectoryAbsolute = $this->buildAbsolutePath($currentDirectory);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->finder = $finder;  | 
            
                            
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                        $this->environmentLoader = $environmentLoader;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string $newPath  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return WorkingDirectory  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function cd($newPath)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return new WorkingDirectory($newPath, $this->finder, $this->filesystem, $this->environmentLoader);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return void  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function createEnvironmentFile()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $targetFilename = $this->currentDirectoryAbsolute . DIRECTORY_SEPARATOR . self::FILE_SUFFIX;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->filesystem->dumpFile(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $targetFilename,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            self::DRAFT_CONTENT  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return void  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function loadEnvironment()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->environmentLoader->load($this);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return Finder  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getCandidates()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->finder->find($this->currentDirectoryAbsolute);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getCurrentDirectoryAbsolute(): string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->currentDirectoryAbsolute;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function __toString()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->currentDirectoryAbsolute;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string $path  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private function buildAbsolutePath($path)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $absolutePath = $path;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!$this->filesystem->isAbsolutePath($path)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $absolutePath = realpath($path);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $absolutePath;  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    }  | 
            
            
                                                        
            
                                    
            
            
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                }  | 
            
            
                        
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: