<?php

	namespace api\core;

	use \manager\ManagerError;


	class release{

		/* PULLS A BRANCH FROM GIT
		*
		* @project<String> 										Project's name
		* @branch<String> 										Git branch
		*
		*/
		public static function pull($args){
			extract($args);

			/* [1] Load projects' configuration
			=========================================================*/
			/* (1) Fetch file */
			$fc = file_get_contents(__CONFIG__.'/projects.json');
			if( !$fc )
				return ['ModuleError'=>ManagerError::UnreachableResource];

			/* (2) Checks json format */
			$js = json_decode( $fc, true );

			if( !$js )
				return ['ModuleError'=>ManagerError::ParsingFailed];


			/* [2] Checks @project argument and files
			=========================================================*/
			/* (1) Checks @project */
			if( !isset($js[$project]) )
				return ['ModuleError'=>ManagerError::UnreachableResource];

			/* (2) Checks @project's folder */
			if( !is_dir($js[$project]['root']) )
				return ['ModuleError'=>ManagerError::UnreachableResource];

			/* (3) Checks @git directory */
			if( !is_dir($js[$project]['root'].'/.git') )
				return ['ModuleError'=>ManagerError::UnreachableResource];


			/* [3] Launch script
			=========================================================*/
			/* (1) Launch command + test */
			$stdout = shell_exec('cd '.$js[$project]['root'].'; git pull origin '.$branch.';');

			/* (2) If error, raise error */
			if( is_null($stdout) )
				return ['ModuleError'=>ManagerError::PermissionError];


			/* [4] Return success error
			=========================================================*/
			return [];
		}

	}