<?php
/*
Plugin Name: WP FDroid
Plugin URI: http://f-droid.org/repository
Description: An FDroid repository browser
Author: Ciaran Gultnieks
Version: 0.01
Author URI: http://ciarang.com

Revision history
0.01 - 2010-12-04: Initial development version

*/

include('android-permissions.php');

class FDroid
{

    // Our text domain, for internationalisation
    private $textdom='wp-fdroid';

	private $site_path;

    // Constructor
    function FDroid() {
        // Add filters etc here!
        add_shortcode('fdroidrepo',array($this, 'do_shortcode'));
        add_filter('query_vars',array($this, 'queryvars'));
        $this->inited=false;
        $this->site_path=getenv('DOCUMENT_ROOT');
    }


    // Register additional query variables. (Handler for the 'query_vars' filter)
    function queryvars($qvars) {
        $qvars[]='fdfilter';
        $qvars[]='fdid';
        $qvars[]='fdpage';
        $qvars[]='fdstyle';
        return $qvars;
    }


    // Lazy initialise. All non-trivial members should call this before doing anything else.
    function lazyinit() {
        if(!$this->inited) {
            load_plugin_textdomain($this->textdom, PLUGINDIR.'/'.dirname(plugin_basename(__FILE__)), dirname(plugin_basename(__FILE__)));

            $this->inited=true;
        }
    }

    // Gets a required query parameter by name.
    function getrequiredparam($name) {
        global $wp_query;
        if(!isset($wp_query->query_vars[$name]))
            wp_die("Missing parameter ".$name,"Error");
        return $wp_query->query_vars[$name];
    }

    // Handler for the 'fdroidrepo' shortcode.
    //  $attribs - shortcode attributes
    //  $content - optional content enclosed between the starting and
    //             ending shortcode
    // Returns the generated content.
    function do_shortcode($attribs,$content=null) {
        global $wp_query,$wp_rewrite;
        $this->lazyinit();

		
		// Init local query vars
		foreach($this->queryvars(array()) as $qv) {
			if(array_key_exists($qv,$wp_query->query_vars)) {
				$query_vars[$qv] = $wp_query->query_vars[$qv];
			} else {
				$query_vars[$qv] = null;
			}
		}
	
		// Santiy check query vars
		if(!isset($query_vars['fdpage']) || !is_numeric($query_vars['fdpage']) || $query_vars['fdpage'] <= 0) {
			$query_vars['fdpage'] = 1;
		}

		$out = '';

		if(isset($attribs['search']) && $query_vars['fdfilter']===null) {
			$query_vars['fdfilter'] = '';
		}

		if($query_vars['fdid']!==null) {
            $out.=$this->get_app($query_vars);
		} else {
			if($query_vars['fdfilter'] !== null)
				$out.=$this->show_search($query_vars);

            $out.=$this->get_apps($query_vars);
		}
        return $out;

    }


    function get_app($query_vars) {
		$permissions_data = get_android_permissions_array($this->site_path.'/repo/AndroidManifest.xml', $this->site_path.'/repo/strings.xml', $this->site_path.'/repo/android-permissions.cache');

        $xml = simplexml_load_file($this->site_path.'/repo/index.xml');
        foreach($xml->children() as $app) {

            $attrs=$app->attributes();
            if($attrs['id']==$query_vars['fdid']) {
                $apks=array();;
                foreach($app->children() as $el) {
                    switch($el->getName()) {
                        case "name":
                            $name=$el;
                            break;
                        case "icon":
                            $icon=$el;
                            break;
                        case "summary":
                            $summary=$el;
                            break;
                        case "description":
                            $desc=$el;
                            break;
                        case "license":
                            $license=$el;
                            break;
                        case "source":
                            $source=$el;
                            break;
                        case "tracker":
                            $issues=$el;
                            break;
                        case "donate":
                            $donate=$el;
                            break;
                        case "web":
                            $web=$el;
                            break;
                        case "package":
                            $thisapk=array();
                            foreach($el->children() as $pel) {
                                switch($pel->getName()) {
                                case "version":
                                    $thisapk['version']=$pel;
                                    break;
                                case "vercode":
                                    $thisapk['vercode']=$pel;
                                    break;
                                case "apkname":
                                    $thisapk['apkname']=$pel;
                                    break;
                                case "srcname":
                                    $thisapk['srcname']=$pel;
                                    break;
                                case "hash":
                                    $thisapk['hash']=$pel;
                                    break;
                                case "size":
                                    $thisapk['size']=$pel;
                                    break;
                                case "sdkver":
                                    $thisapk['sdkver']=$pel;
                                    break;
                                case "permissions":
                                    $thisapk['permissions']=$pel;
                                    break;
                                }
                            }
                            $apks[]=$thisapk;

                    }
                }

                $out='<div id="appheader">';
                $out.='<div style="float:left;padding-right:10px;"><img src="http://f-droid.org/repo/icons/'.$icon.'" width=48></div>';
                $out.='<p><span style="font-size:20px">'.$name."</span>";
                $out.="<br>".$summary."</p>";
                $out.="</div>";

                $out.="<p>".$desc."</p>";

                $out.="<p><b>License:</b> ".$license."</p>";

                $out.="<p>";
                if(strlen($web)>0)
                    $out.='<b>Website:</b> <a href="'.$web.'">'.$web.'</a><br />';
                if(strlen($issues)>0)
                    $out.='<b>Issue Tracker:</b> <a href="'.$issues.'">'.$issues.'</a><br />';
                if(strlen($source)>0)
                    $out.='<b>Source Code:</b> <a href="'.$source.'">'.$source.'</a><br />';
                if($donate && strlen($donate)>0)
                    $out.='<b>Donate:</b> <a href="'.$donate.'">'.$donate.'</a><br />';
                $out.="</p>";

				$out.='<script type="text/javascript">';
				$out.='function showHidePermissions(id) {';
				$out.='  if(document.getElementById(id).style.display==\'none\')';
				$out.='    document.getElementById(id).style.display=\'block\';';
				$out.='  else';
				$out.='    document.getElementById(id).style.display=\'none\';';
				$out.='  return false;';
				$out.='}';
				$out.='</script>';
				
                $out.="<h3>Packages</h3>";
				$i=0;
                foreach($apks as $apk) {
                    $out.="<p><b>Version ".$apk['version']."</b> - ";
                    $out.='<a href="http://f-droid.org/repo/'.$apk['apkname'].'">download</a> ';
                    $out.=$apk['size']." bytes";
                    if($apk['srcname'])
                        $out.='<br><a href="http://f-droid.org/repo/'.$apk['srcname'].'">source tarball</a>';
					
					if($i==0)
						$divStyleDisplay='block';
					else
						$divStyleDisplay='none';
					$divId='permissions'.$i;
					$out.='<p><a href="javascript:void(0);" onClick="showHidePermissions(\''.$divId.'\');">Permissions</a><br/>';
					$out.='<div style="display:'.$divStyleDisplay.';" id="'.$divId.'">';
					$permissions = explode(',',$apk['permissions']);
					usort($permissions,
					
					
						function ($a, $b) use (&$permissions_data) {

							$aProtectionLevel = $permissions_data['permission'][$a]['protectionLevel'];
							$bProtectionLevel = $permissions_data['permission'][$b]['protectionLevel'];

							if($aProtectionLevel != $bProtectionLevel) {
								return strcmp($aProtectionLevel, $bProtectionLevel);
							}
						
							$aGroup = $permissions_data['permission'][$a]['permissionGroup'];
							$bGroup = $permissions_data['permission'][$b]['permissionGroup'];
							
							return strcmp($aGroup, $bGroup);
						}

					
					
					);
					
					$permission_group_last = '';
					foreach($permissions as $permission) {
						$permission_group = $permissions_data['permission'][$permission]['permissionGroup'];
						if($permission_group != $permission_group_last) {
							$out.='<strong>'.strtoupper($permissions_data['permission-group'][$permission_group]['label']).'</strong><br/>';
							$permission_group_last = $permission_group;
						}
					
						$out.='('.strtoupper(substr($permissions_data['permission'][$permission]['protectionLevel'],0,1)).') - ';
						$out.='<strong>'.$permissions_data['permission'][$permission]['label'].'</strong> [<code>'.$permission.'</code>]<br/>';
						$out.=$permissions_data['permission'][$permission]['description'].'<br/>';
						//$out.=$permissions_data['permission'][$permission]['comment'].'<br/>';
						$out.='<br/>';
					}
					$out.='</div></p>';
						
                    $out.='</p>';
					$i++;
                }

                $out.='<hr><p><a href="'.makelink($query_vars,array('fdid'=>null)).'">Index</a></p>';

                return $out;
            }
        }
        return "<p>Application not found</p>";
    }


    function get_apps($query_vars) {

	    $xml = simplexml_load_file($this->site_path."/repo/index.xml");
		$matches = $this->show_apps($xml,$query_vars,$numpages);
	
		$out='';

		if(($query_vars['fdfilter']===null || $query_vars['fdfilter']!='') && $numpages>0)
		{
			$out.='<div style="float:left;">';
			if($query_vars['fdfilter']===null)
				$out.="All applications";
			else
				$out.='Applications matching "'.$query_vars['fdfilter'].'"';
			$out.="</div>";

			$out.='<div style="float:right;">';
				$out.='<a href="'.makelink($query_vars, array('fdstyle'=>'list','fdpage'=>'1')).'">List</a> | ';
				$out.='<a href="'.makelink($query_vars, array('fdstyle'=>'grid','fdpage'=>'1')).'">Grid</a>';
			$out.='</div>';

			$out.='<br break="all"/>';
		} 
		
		if($numpages>0) {
			$out.=$matches;
			
			$out.='<hr><p>';
			if($query_vars['fdpage']==1) {
				$out.="&lt;&lt;first ";
				$out.="&lt;prev ";
			} else {
				$out.='<a href="'.makelink($query_vars, array('fdpage'=>1)).'">&lt;&lt;first</a> ';
				$out.='<a href="'.makelink($query_vars, array('fdpage'=>($query_vars['fdpage']-1))).'">&lt;&lt;prev</a> ';
			}
			$out.=' Page '.$query_vars['fdpage'].' of '.$numpages.' ';
			if($query_vars['fdpage']==$numpages) {
				$out.="next&gt; ";
				$out.="last&gt;&gt; ";
			} else {
				$out.='<a href="'.makelink($query_vars, array('fdpage'=>($query_vars['fdpage']+1))).'">next&gt;</a> ';
				$out.='<a href="'.makelink($query_vars, array('fdpage'=>$numpages)).'">last&gt;&gt;</a> ';
			}
			$out.='</p>';
		} else if($query_vars['fdfilter']!='') {
			$out.='<p>No matches</p>';
		}

        return $out;
    }

	
    function show_search($query_vars) {

		$out='';
		$out.='<form name="searchform" action="" method="get">';
		$out.='<p><input name="fdfilter" type="text" value="'.$query_vars['fdfilter'].'" size="30"> ';
		$out.='<input type="submit" value="Search"></p>';

		$out.='<input type="hidden" name="page_id" value="'.get_query_var('page_id').'">';
		foreach($query_vars as $name => $value) {
			if($value !== null && $name != 'fdfilter')
				$out.='<input type="hidden" name="'.$name.'" value="'.$value.'">';
		}
		
		$out.='</form>'."\n";
		
        return $out;
    }
	

    function show_apps($xml,$query_vars,&$numpages) {
	
        $skipped=0;
        $got=0;
        $total=0;

		if($query_vars['fdstyle']=='grid') {
			$outputter = new FDOutGrid();
		} else {
			$outputter = new FDOutList();
		}
		
		$out = "";
		
		$out.=$outputter->outputStart();
		
        foreach($xml->children() as $app) {

            if($app->getName() == 'repo') continue;
            $appinfo['attrs']=$app->attributes();
            $appinfo['id']=$appinfo['attrs']['id'];
            foreach($app->children() as $el) {
                switch($el->getName()) {
                    case "name":
                        $appinfo['name']=$el;
                        break;
                    case "icon":
                        $appinfo['icon']=$el;
                        break;
                    case "summary":
                        $appinfo['summary']=$el;
                        break;
                    case "license":
                        $appinfo['license']=$el;
                        break;
                }
            }

            if($query_vars['fdfilter']===null || $query_vars['fdfilter']!='' && (stristr($appinfo['name'],$query_vars['fdfilter']) || stristr($appinfo['summary'],$query_vars['fdfilter']))) {
                if($skipped<($query_vars['fdpage']-1)*$outputter->perpage) {
                    $skipped++;
                } else if($got<$outputter->perpage) {
					$out.=$outputter->outputEntry($query_vars, $appinfo);
                    $got++;
                }
                $total++;
            }

        }
		
		$out.=$outputter->outputEnd();
		
		$numpages = ceil((float)$total/$outputter->perpage);
		
		return $out;
	}
}

// Class to output app entries in a detailed list format
class FDOutList
{
	var $perpage=30;

	function FDOutList() {
	}

	function outputStart() {
		return '';
	}
	
	function outputEntry($query_vars, $appinfo) {
		$out="";
		$out.="<hr>\n";
		$out.='<div id="appheader">';

		$out.='<div style="float:left;padding-right:10px;"><img src="http://f-droid.org/repo/icons/'.$appinfo['icon'].'" style="width:48px;"></div>';

		$out.='<div style="float:right;">';
		$out.='<p><a href="';
		$out.=makelink($query_vars, array('fdid'=>$appinfo['id']));
		$out.='">Details...</a>';
		$out.="</p>";
		$out.="</div>\n";

		$out.='<p><span style="font-size:20px">'.$appinfo['name']."</span>";
		$out.="<br>".$appinfo['summary']."</p>\n";

		$out.="</div>\n";
		
		return $out;
	}

	function outputEnd() {
		return '';
	}
}

// Class to output app entries in a compact grid format
class FDOutGrid
{
	var $perpage=80;

	var $itemCount = 0;

	function FDOutGrid() {
	}

	function outputStart() {
		return "\n".'<table border="0" width="100%"><tr>'."\n";
	}
	
	function outputEntry($query_vars, $appinfo) {
		$link=makelink($query_vars, array('fdid'=>$appinfo['id']));

		$out='';

		if($this->itemCount%4 == 0 && $this->itemCount > 0)
		{
			$out.='</tr><tr>'."\n";
		}

		$out.='<td align="center" valign="top" style="background-color:#F8F8F8;">';
		$out.='<p>';
		$out.='<div id="appheader" style="text-align:center;width:110px;">';

		$out.='<a href="'.$link.'" style="border-bottom-style:none;">';
		$out.='<img src="http://f-droid.org/repo/icons/'.$appinfo['icon'].'" style="width:48px;border-width:0;padding-top:5px;padding-bottom:5px;"><br/>';
		$out.=$appinfo['name'].'<br/>';
		$out.='</a>';

		$out.="</div>";
		$out.='</p>';
		$out.="</td>\n";
		
		$this->itemCount++;
		return $out;
	}

	function outputEnd() {
		return '</tr></table>'."\n";
	}
}

// Make a link to this page, with the current query vars attached and desired params added/modified
function makelink($query_vars, $params=array()) {
	$link=get_permalink();
	$vars=linkify(array_merge($query_vars, $params));
	if(strlen($vars)==0)
		return $link;
	if(strpos($link,'?')===false)
		$link.='?';
	else
		$link.='&';
	return $link.$vars;
}

// Return the key value pairs in http-get-parameter format as a string
function linkify($vars) {
	$retvar = '';
	foreach($vars as $k => $v) {
		if($k!==null && $v!==null && $v!='')
			$retvar .= $k.'='.$v.'&';
	}
	return substr($retvar,0,-1);
}


$wp_fdroid = new FDroid();


?>