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<?

	/**
	 * The procedure to update an ebuild is this -- remove the old one, and insert the new one.
	 * This is actually much simpler than trying to update everything *and* it allows the 
	 * website to constantly keep a snapshot of it's current status regardless of backend
	 * activity.
	 *
	 * To distinguish between new and updated ebuilds in the database, post-run, the updated
	 * ebuilds will have a non-null value for the "udate" (update date) column.  New
	 * ebuilds will have a null value.
	 */

	/**
	 * Right now this will run fine is run as a cron job.  It will clean up after itself
	 * if there are NO ebuilds in the tree, but if you accidentally remove an entire package
	 * or something, it will still only insert what's new (recently modified since last mtime).
	 * For now, you're going to have to manually flip some bits to get it to correct mistakes
	 * like that.  It's too much of a pain to have it check for it (at this point).
	 */

  	$verbose = true;
  	$debug = false;
  	$all = false;
	
	if($debug) {
		$verbose = true;
	}

	require_once 'header.php';
	require_once 'class.portage.tree.php';
	require_once 'class.portage.category.php';
	require_once 'class.portage.package.php';
	require_once 'class.portage.ebuild.php';
	require_once 'class.db.ebuild.php';
	
	// Reset the status on ones that were going to be removed
//  	$sql = "UPDATE ebuild SET status = 0 WHERE status = 3;";
	
	$sql = "DELETE FROM ebuild WHERE status > 0;";
	$db->query($sql);
	
	// Check to see if there are any ebuilds
	$sql = "SELECT COUNT(1) FROM ebuild WHERE status = 0;";
	$count = $db->getOne($sql);
	
	// If there aren't any, then import *all* packages
	if(!$count || $debug)
		$all = true;
	else {
		
		// If there are, get the last modified time
		$sql = "SELECT MAX(portage_mtime) AS max_portage_mtime, MAX(cache_mtime) AS max_cache_mtime FROM ebuild WHERE status = 0;";
		$row = $db->getRow($sql);
		
		if(is_array($row)) {
			extract($row);
			
			if(is_null($max_portage_mtime) || is_null($max_cache_mtime))
				$all = true;
			else
				$min = min($max_portage_mtime, $max_cache_mtime);
		}
	}
	
	$tree = new PortageTree();
	$categories = $tree->getCategories();
	$arr_import = array();
	
	// Find all the ebuilds that are currently in the db
	// FIXME rewrite to exclude update/delete statuses?
	$arr = $arr_db = array();
	if(!$all) {
		// Find all the packages that have been updated in the last 24 hours
		// Need to check the packages themselves, because something may have
		// been deleted.
		$portage = $tree->getTree();
		$cache = $tree->getTree()."/metadata/cache/";
		
		$tmp = tempnam('/tmp', 'znurt');
		touch($tmp, $min);
		
		$exec = "find $cache -type f -newer $tmp";
		$arr = shell::cmd($exec);
 		unlink($tmp);
		
		if($verbose) {
			shell::msg($exec);
			shell::msg("(".count($arr).") new/updated ebuilds found since last sync.");
		}
		
		foreach($arr as $dir) {
			$atom = str_replace($tree->getTree()."/metadata/cache/", "", $dir);
			$e = new PortageEbuild($atom);
			
			$arr_import[$e->category][] = $e->pn;
			$arr_import[$e->category] = array_unique($arr_import[$e->category]);
		}
		
		// Also add any packages that were flagged when importing those
		$sql = "SELECT c.name AS category_name, p.name AS package_name FROM package p INNER JOIN category c ON c.id = p.category WHERE p.status = 1;";
		$arr = $db->getAll($sql);
		
		if(count($arr)) {
			foreach($arr as $row) {
				$arr_import[$row['category_name']][] = $row['package_name'];
				$arr_import[$row['category_name']] = array_unique($arr_import[$row['category_name']]);
			}
		}
		
		ksort($arr_import);
		
	} elseif($all) {
	
		foreach($categories as $name) {
			$c = new PortageCategory($name);
			$arr_import[$name] = $c->getPackages();
		}
	
	}
	
	if($debug || $all) {
		shell::msg("Checking ALL categories");
	} elseif($verbose) {
		shell::msg("(".count($arr_import).") RECENTLY MODIFIED categories ");
	}
	
	// Get the package IDs for reference
	// and the mtimes of the ebuilds for verification
	$sql = "SELECT p.id AS package_id, c.name AS category_name, p.name AS package_name, e.pf AS ebuild_name, e.id AS ebuild FROM ebuild e RIGHT OUTER JOIN package p ON e.package = p.id INNER JOIN category c ON p.category = c.id ORDER BY c.name, p.name;";
	$arr = $db->getAll($sql);
	if(count($arr)) {
		foreach($arr as $row) {
			extract($row);
			$arr_db[$category_name][$package_name] = $package_id;
			if($ebuild_name) {
				$arr_ebuild_ids[$category_name][$package_name][$ebuild_name] = $ebuild;
			}
		}
	}
	
	
	if(count($arr_import)) {
		
		foreach($arr_import as $category_name => $arr_category) {
		
			foreach($arr_category as $package_name) {
			
				if($debug)
					shell::msg("[$category_name/$package_name]");
			
				$arr_insert = array();
				$arr_delete = array();
				$arr_update = array();
				
				if(count($arr_ebuild_ids[$category_name][$package_name]))
					$arr_db_ebuilds = array_keys($arr_ebuild_ids[$category_name][$package_name]);
				else
					$arr_db_ebuilds = array();
					
				$obj_package = new PortagePackage($category_name, $package_name);
				
				$package_id =& $arr_db[$category_name][$package_name];
				
				// If there are any old ebuilds (in the DB), then compare the new (in portage)
				if(count($arr_db_ebuilds)) {
				
					$arr_fs_ebuilds = $obj_package->getEbuilds();
					
					// Check old against new
					$arr_delete = array_diff($arr_db_ebuilds, $arr_fs_ebuilds);
					$arr_insert = array_diff($arr_fs_ebuilds, $arr_db_ebuilds);
					
					// Next, look at the mtimes and see if any need to be updated
					if(count($arr_fs_ebuilds)) {
					
						foreach($arr_fs_ebuilds as $ebuild_name) {
							
							$obj_ebuild = new PortageEbuild("$category_name/$ebuild_name");
							
							$ebuild = $arr_ebuild_ids[$category_name][$package_name][$ebuild_name];
							
							if($ebuild) {
								$db_ebuild = new DBEbuild($ebuild);
								
								if(($obj_ebuild->portage_mtime != $db_ebuild->portage_mtime) || ($obj_ebuild->cache_mtime != $db_ebuild->cache_mtime)) {
								
									$arr_update[] = $ebuild_name;
									$arr_insert[] = $ebuild_name;
									// Normally I'd add this here, but instead, just go ahead and mark it
									// right away, and avoid having it run twice.
									$db_ebuild->status = 3;
// 									$arr_delete[] = $ebuild_name;
								
									if($verbose) {
										shell::msg("[update] $category_name/$ebuild_name");
									}
								
									// Flag as being updated (will be removed from end of import run)
// 									$db_ebuild->status = 2;
										
								}
							}
						}
					}
					
					// FIXME just pass the IDs
					if(count($arr_delete)) {
					
						foreach($arr_delete as $ebuild_name) {
						
							if($verbose)
								shell::msg("[delete] $category_name/$ebuild_name");
							
							$ebuild = $arr_ebuild_ids[$category_name][$package_name][$ebuild_name];
							
							if($ebuild) {
// 								$db_ebuild = new DBEbuild($ebuild);
// 								$db_ebuild->status = 3;
								
								$arr_update = array('status' => 3);
								$db->autoExecute('ebuild', $arr_update, MDB2_AUTOQUERY_UPDATE, "id = ".$db->quote($id));
								
							}
							
						}
						
					}
				
				}
				// Otherwise, insert all of them
				else {
					$arr_insert = $obj_package->getEbuilds();
				}
				
				if(count($arr_insert)) {
				
					$arr_insert = array_unique($arr_insert);
					
					foreach($arr_insert as $ebuild_name) {
					
						if($verbose)
							shell::msg("[insert] $category_name/$ebuild_name");
					
						$obj_ebuild = new PortageEbuild("$category_name/$ebuild_name");
						
						if(in_array($ebuild_name, $arr_update)) {
							$udate = $now;
						} else
							$udate = null;
						
						$arr = array(
							'package' => $package_id,
							'pf' => $obj_ebuild->pf,
							'pv' => $obj_ebuild->pv,
							'pr' => $obj_ebuild->pr,
							'pvr' => $obj_ebuild->pvr,
							'alpha' => $obj_ebuild->_alpha,
							'beta' => $obj_ebuild->_beta,
							'pre' => $obj_ebuild->_pre,
							'rc' => $obj_ebuild->_rc,
							'p' => $obj_ebuild->_p,
							'version' => $obj_ebuild->version,
							'slot' => $obj_ebuild->slot,
							'portage_mtime' => $obj_ebuild->portage_mtime,
							'cache_mtime' => $obj_ebuild->cache_mtime,
							'status' => 1,
							'udate' => $udate,
							'source' => $obj_ebuild->source,
						);
						
						$db->autoExecute('ebuild', $arr, MDB2_AUTOQUERY_INSERT);
						
						
					}
					
				}
				
			}
			
		}
		
	}
	
	// Update the package_recent entries
	$sql = "DELETE FROM package_recent WHERE status = 1;";
	$db->query($sql);
	
	$sql = "INSERT INTO package_recent SELECT DISTINCT package, MAX(cache_mtime), 1 FROM ebuild e GROUP BY package ORDER BY MAX(cache_mtime) DESC, package;";
	$db->query($sql);
	
	
?>