<?php
/* PageClasses.shortlog.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 shortlog {
	private $project;
	private $graph_data, $graph_gen;
	private $first_commit;
	private $have_more = false;
	
	public function generate_shortlog($project, $head, $max, $skip, $file = null, $pages = true, $next_page = 0) {
		$this->project = $project;
		if($head && strtolower($head) == 'all')
			$head = null;
		$content = new ContentProvider('shortlog', 'shortlog');
		
		if(GitConfig::GITGRAPH_ENABLE) {
			if($max+$skip >= 2000) { //only load the last 2k commits
				$real_skip = ($max+$skip) - 2000;
				$skip -= $real_skip;
			} else
				$real_skip = 0;
		} else {
			$real_skip = $skip;
			$skip = 0;
		}
		
		$commits = GitCommand::get_commits($project['path'], $head, $max+$skip+1, $real_skip, $file);
		
		if(GitConfig::GITGRAPH_ENABLE) {
			$this->graph_data = new graph_data_generator();
			if($head == null) {
				//add all refs to the graph
				$rhash = GitCommand::get_hash($project['path'], "HEAD");
				if($rhash)
					$this->graph_data->add_branch($rhash, null);
				
				foreach($this->project['refs'] as $ref => $rhash) {
					if(preg_match('#^refs/heads/#i', $ref) && preg_match('/^[a-f0-9]*$/i', $rhash)) {
						$this->graph_data->add_branch($rhash, $ref);
					}
				}
				foreach($this->project['refs'] as $ref => $rhash) {
					if(preg_match('#^refs/remotes/#i', $ref) && preg_match('/^[a-f0-9]*$/i', $rhash)) {
						$this->graph_data->add_branch($rhash, $ref);
					}
				}
			}
			$this->graph_data->parse($commits);
			
			$graph = $this->graph_data->get_header_graph();
			if(GitConfig::GITGRAPH_DATA_URL) {
				$this->graph_gen = new graph_image_generator();
				$graph = $this->graph_gen->generate($graph, true);
				$graph = base64_encode($graph);
				$graph = "data:image/png;base64,".$graph;
			} else
				$graph = "?e=graph&gd=".$graph;
			$content->set('graph_data', $graph);
		}
		
		$commit_counter = 0;
		$this->first_commit = $commits[0];
		foreach($commits as $commit) {
			$commit_counter++;
			if($commit_counter <= $skip)
				continue;
			if($commit_counter > $max+$skip) {
				$this->have_more = true;
				if($pages) {
					$content->append('entries', new ContentProvider('shortlog', 'shortlog_page', array("page" => $next_page)));
				} else
					$content->append('entries', new ContentProvider('shortlog', 'shortlog_more'));
			} else
				$content->append('entries', $this->shortlog_entry(($commit_counter % 2 ? 'dark' : 'light'), $commit));
		}
		
		return $content;
	}
	
	public function get_first_commit() {
		return $this->first_commit;
	}
	
	public function get_have_more() {
		return $this->have_more;
	}
	
	private function shortlog_entry($class, $commit) {
		$entry = new ContentProvider('shortlog', 'shortlog_entry');
		$entry->set('class', $class);
		$entry->set('hash', $commit['id']);
		$entry->set('author', htmlentities($commit['author']));
		$entry->set('message', htmlentities(Tools::chop_text($commit['text'], 50, 5)));
		$age = time() - $commit['committer_time'];
		$date_str = date("Y-m-d", ($commit['committer_time'] ? $commit['committer_time'] : $commit['author_time']));
		$age_calc = Tools::age_calculate($commit['committer_time']);
		$age_str = $age_calc['age_str'];
		if($age > 60*60*24*7*2) {
			$entry->set('date', $age_str);
			$entry->set('age', $date_str);
		} else {
			$entry->set('date', $date_str);
			$entry->set('age', $age_str);
		}
		if(GitConfig::GITGRAPH_ENABLE) {
			$graph = $this->graph_data->get_graph($commit['id']);
			if(GitConfig::GITGRAPH_DATA_URL) {
				$graph = $this->graph_gen->generate($graph, true);
				$graph = base64_encode($graph);
				$graph = "data:image/png;base64,".$graph;
			} else
				$graph = "?e=graph&gd=".$graph;
			$entry->set('graph_data', $graph);
		}
		
		$entry->set('refs', $this->shortlog_commit_refs($this->project, $commit['id']));
		
		return $entry;
	}
	
	public function shortlog_commit_refs($project, $hash) {
		if(!is_array($project['refs']))
			return "";
		$refs = new ContentProvider('shortlog', 'shortlog_refs');
		$found = false;
		foreach($project['refs'] as $ref => $rhash) {
			if(strtolower($rhash) == strtolower($hash)) {
				$refexp = explode('/', $ref, 3);
				$reftype = $refexp[1];
				if($reftype == 'heads')
					$reftype = 'head';
				else if($reftype == 'remotes')
					$reftype = 'remote';
				else if($reftype == 'tags')
					$reftype = 'tag';
				$refs->append('refs', new ContentProvider('shortlog', 'shortlog_ref_'.$reftype, array("name" => $refexp[2], "ref_link" => $ref)));
				$found = true;
			}
		}
		return ($found ? $refs : "");
	}
	
}

?>