<?php
/* ProjectLoader.class.php - phpgitweb
 * Copyright (C) 2011-2012  Philipp Kreil (pk910)
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License 
 * along with this program. If not, see <http://www.gnu.org/licenses/>. 
 */

class ProjectLoader {
	private $projects = NULL;
	
	private function loadProjects($load_details = true) {
		$this->projects = array();
		if(GitConfig::PROJECT_LIST) {
			foreach(file(GitConfig::PROJECT_LIST) as $entry) {
				$entry = explode(" ", str_replace(array("\r", "\n"), array("", ""), $entry));
				
				if($load_details) {
					//check if project really exists
					$project = $this->loadProject($entry[0], false);
					if($project === NULL)
						continue;
				} else
					$project['name'] = $entry[0];
				
				if(count($entry) > 1)
					$project['owner'] = $entry[1];
				$this->projects[] = $project;
			}
		} else {
			//walk through PROJECT_ROOT
			
		}
	}
	
	private function loadProject($name, $check_strict_export = true) {
		$project = array();
		$project['name'] = $name;
		
		$dir_seperator = (substr(GitConfig::PROJECT_ROOT, -1) == '/' ? '' : '/');
		if(!Validation::validate_path($name))
			return NULL;
		if(is_dir(GitConfig::PROJECT_ROOT.$dir_seperator.$name))
			$project['path'] = GitConfig::PROJECT_ROOT.$dir_seperator.$name;
		else if(is_dir(GitConfig::PROJECT_ROOT.$dir_seperator.$name.".git"))
			$project['path'] = GitConfig::PROJECT_ROOT.$dir_seperator.$name.".git";
		else
			return NULL;
		if(is_dir($project['path'].'/.git'))
			$project['path'] .= '/.git';
		
		if(GitConfig::EXPORT_FILE && !file_exists($project['path'].'/'.GitConfig::EXPORT_FILE))
			return NULL;
		
		if(GitConfig::STRICT_EXPORT && $check_strict_export) {
			if($this->projects === NULL)
				$this->loadProjects(false);
			$found = false;
			foreach($this->projects as $p) {
				if(strtolower($p['name']) == strtolower($name)) {
					$found = true;
					$project['name'] = $p['name'];
					if(isset($p['owner']))
						$project['owner'] = $p['owner'];
					break;
				}
			}
			if(!$found)
				return NULL;
		}
		
		if(file_exists($project['path'].'/description'))
			$project['description'] = file_get_contents($project['path'].'/description');
		else
			$project['description'] = "";
		
		if(!array_key_exists('owner', $project) || $project['owner'] == null) {
			if(GitConfig::PROJECT_OWNER)
				$project['owner'] = GitConfig::PROJECT_OWNER;
			else {
				$project['owner'] = fileowner($project['path']);
				$owner = posix_getpwuid($project['owner']);
				if($owner && $owner['name'])
					$project['owner'] = $owner['name'];
			}
		}
		
		return $project;
	}
	
	public function getProjectList() {
		$this->loadProjects();
		return $this->projects;
	}
	
	public function getProject($name) {
		return $this->loadProject($name);
	}
	
	public function getLastChange($project) {
		if(!array_key_exists('last_activity', $project)) {
			$project['last_activity'] = GitCommand::last_activity($project['path']);
			if(!$project['last_activity'])
				$project['last_activity'] = 0;
		}
		return $project['last_activity'];
	}
	
	private function getProjectRefsRecursive(&$project, $cref) {
		if ($dh = opendir($project['path'].'/'.$cref)) {
			while (($file = readdir($dh)) !== false) {
				if($file[0] == '.')
					continue;
				if(is_dir($project['path'].'/'.$cref.'/'.$file))
					$this->getProjectRefsRecursive($project, $cref.'/'.$file);
				else {
					$refval = file($project['path'].'/'.$cref.'/'.$file);
					$project['refs'][$cref.($cref == '' ? '' : '/').$file] = str_replace(array("\r", "\n"), array("", ""), $refval[0]);
				}
			}
		}
	}
	
	public function getProjectRefs($project) {
		if(!array_key_exists('refs', $project)) {
			if(is_dir($project['path'].'/refs')) {
				$project['refs'] = array();
				$this->getProjectRefsRecursive($project, 'refs');
			}
		}
		return $project['refs'];
	}
}

?>