<?php

/**
 * @name        Album Module
 * @author      Philipp Maurer
 * @author      Tobias Reich
 * @copyright   2014 by Philipp Maurer, Tobias Reich
 */

if (!defined('LYCHEE')) exit('Error: Direct access is not allowed!');

function addAlbum($title) {

	global $database;

    if (strlen($title)<1||strlen($title)>30) return false;
    $sysdate = date("d.m.Y");
    $result = $database->query("INSERT INTO lychee_albums (title, sysdate) VALUES ('$title', '$sysdate');");
    if (!$result) return false;

    return $database->insert_id;

}

function getAlbums($public) {

	global $database, $settings;

    // Smart Albums
    if (!$public) $return = getSmartInfo();

    // Albums
    if ($public) $query = "SELECT * FROM lychee_albums WHERE public = 1";
    else $query = "SELECT * FROM lychee_albums";
    $result = $database->query($query) OR exit("Error: $result <br>".$database->error);
    $i = 0;
    while($row = $result->fetch_object()) {

    	// Info
    	$return["content"][$row->id]['id'] = $row->id;
        $return["content"][$row->id]['title'] = $row->title;
        $return["content"][$row->id]['public'] = $row->public;
        $return["content"][$row->id]['sysdate'] = date('F Y', strtotime($row->sysdate));
        if ($row->password=="") $return["content"][$row->id]['password'] = false;
        else $return["content"][$row->id]['password'] = true;

        // Thumbs
        if (($public&&$row->password=="")||(!$public)) {
	        $albumID = $row->id;
	        $result2 = $database->query("SELECT thumbUrl FROM lychee_photos WHERE album = '$albumID' ORDER BY star DESC, " . substr($settings['sorting'], 9)  . " LIMIT 0, 3");
	        $k = 0;
	        while($row2 = $result2->fetch_object()){
	            $return["content"][$row->id]["thumb$k"] = $row2->thumbUrl;
	            $k++;
	        }
	        if (!isset($return["content"][$row->id]["thumb0"])) $return["content"][$row->id]["thumb0"] = "";
	        if (!isset($return["content"][$row->id]["thumb1"])) $return["content"][$row->id]["thumb1"] = "";
	        if (!isset($return["content"][$row->id]["thumb2"])) $return["content"][$row->id]["thumb2"] = "";
        }

        // Album count
        $i++;

    }

    $return["num"] = $i;

    if ($i==0) $return["albums"] = false;
    else $return["albums"] = true;

    return $return;

}

function getSmartInfo() {

	global $database, $settings;

	// Unsorted
    $result = $database->query("SELECT thumbUrl FROM lychee_photos WHERE album = 0 " . $settings['sorting']);
    $i = 0;
    while($row = $result->fetch_object()) {
        if ($i<3) $return["unsortedThumb$i"] = $row->thumbUrl;
        $i++;
    }
    $return['unsortedNum'] = $i;

	// Public
    $result2 = $database->query("SELECT thumbUrl FROM lychee_photos WHERE public = 1 " . $settings['sorting']);
    $i = 0;
    while($row2 = $result2->fetch_object()) {
        if ($i<3) $return["publicThumb$i"] = $row2->thumbUrl;
        $i++;
    }
    $return['publicNum'] = $i;

	// Starred
    $result3 = $database->query("SELECT thumbUrl FROM lychee_photos WHERE star = 1 " . $settings['sorting']);
    $i = 0;
    while($row3 = $result3->fetch_object()) {
        if ($i<3) $return["starredThumb$i"] = $row3->thumbUrl;
        $i++;
    }
    $return['starredNum'] = $i;

    return $return;

}

function getAlbum($albumID) {

	global $database, $settings;

	// Get album information
	switch($albumID) {

	    case "f":	$return['public'] = false;
	    			$query = "SELECT id, title, sysdate, public, star, album, thumbUrl FROM lychee_photos WHERE star = 1 " . $settings['sorting'];
	        		break;

	    case "s":	$return['public'] = false;
	    			$query = "SELECT id, title, sysdate, public, star, album, thumbUrl FROM lychee_photos WHERE public = 1 " . $settings['sorting'];
	        		break;

	    case "0":	$return['public'] = false;
	    			$query = "SELECT id, title, sysdate, public, star, album, thumbUrl FROM lychee_photos WHERE album = 0 " . $settings['sorting'];
					break;

	    default:	$result = $database->query("SELECT * FROM lychee_albums WHERE id = '$albumID';");
			    	$row = $result->fetch_object();
			    	$return['title'] = $row->title;
			    	$return['description'] = $row->description;
			    	$return['sysdate'] = date('d M. Y', strtotime($row->sysdate));
			    	$return['public'] = $row->public;
			    	if ($row->password=="") $return['password'] = false;
			    	else $return['password'] = true;
			    	$query = "SELECT id, title, sysdate, public, star, album, thumbUrl FROM lychee_photos WHERE album = '$albumID' " . $settings['sorting'];
			    	break;

	}

	// Get photos
	$result = $database->query($query);
	$previousPhotoID = "";
	$i = 0;
	while($row = $result->fetch_array()) {

	    $return['content'][$row['id']]['id'] = $row['id'];
	    $return['content'][$row['id']]['title'] = $row['title'];
	    $return['content'][$row['id']]['sysdate'] = date('d F Y', strtotime($row['sysdate']));
	    $return['content'][$row['id']]['public'] = $row['public'];
	    $return['content'][$row['id']]['star'] = $row['star'];
	    $return['content'][$row['id']]['album'] = $row['album'];
	    $return['content'][$row['id']]['thumbUrl'] = $row['thumbUrl'];

	    $return['content'][$row['id']]['previousPhoto'] = $previousPhotoID;
	    $return['content'][$row['id']]['nextPhoto'] = "";
	    if ($previousPhotoID!="") $return['content'][$previousPhotoID]['nextPhoto'] = $row['id'];

	    $previousPhotoID = $row['id'];
	    $i++;

	}

	if ($i==0) {

		// Empty album
		$return['content'] = false;

	} else {

		// Enable next and previous for the first and last photo
		$lastElement = end($return['content']);
		$lastElementId = $lastElement['id'];
		$firstElement = reset($return['content']);
		$firstElementId = $firstElement['id'];

		if ($lastElementId!==$firstElementId) {
			$return['content'][$lastElementId]['nextPhoto'] = $firstElementId;
			$return['content'][$firstElementId]['previousPhoto'] = $lastElementId;
		}

	}

	$return['id'] = $albumID;
	$return['num'] = $i;

	return $return;

}

function setAlbumTitle($albumID, $title) {

	global $database;

    if (strlen($title)<1||strlen($title)>30) return false;
    $result = $database->query("UPDATE lychee_albums SET title = '$title' WHERE id = '$albumID';");
    if (!$result) return false;

    return true;

}

function setAlbumDescription($albumID, $description) {

	global $database;

	$description = htmlentities($description);
    if (strlen($description)>800) return false;
    $result = $database->query("UPDATE lychee_albums SET description = '$description' WHERE id = '$albumID';");

    if (!$result) return false;
    return true;

}

function deleteAlbum($albumID) {

	global $database;

	$error = false;

    $result = $database->query("SELECT id FROM lychee_photos WHERE album = '$albumID';");
    while ($row = $result->fetch_object()) {
        if (!deletePhoto($row->id)) $error = true;
    }

    if ($albumID!=0) {
        $result = $database->query("DELETE FROM lychee_albums WHERE id = '$albumID';");
        if (!$result) return false;
    }

    if ($error) return false;
    return true;

}

function getAlbumArchive($albumID) {

	global $database;

    switch($albumID) {
        case 's':
            $query = "SELECT * FROM lychee_photos WHERE public = '1';";
            $zipTitle = "Public";
            break;
        case 'f':
            $query = "SELECT * FROM lychee_photos WHERE star = '1';";
            $zipTitle = "Starred";
            break;
        default:
            $query = "SELECT * FROM lychee_photos WHERE album = '$albumID';";
            $zipTitle = "Unsorted";
    }

    $result = $database->query($query);
    $files = array();
    $i=0;
    while($row = $result->fetch_object()) {
        $files[$i] = "../uploads/big/".$row->url;
        $i++;
    }
    $result = $database->query("SELECT * FROM lychee_albums WHERE id = '$albumID';");
    $row = $result->fetch_object();
    if ($albumID!=0&&is_numeric($albumID))$zipTitle = $row->title;
    $filename = "../uploads/".$zipTitle.".zip";

    $zip = new ZipArchive();

    if ($zip->open($filename, ZIPARCHIVE::CREATE)!==TRUE) {
        return false;
    }

    foreach($files AS $zipFile) {
        $newFile = explode("/",$zipFile);
        $newFile = array_reverse($newFile);
        $zip->addFile($zipFile, $zipTitle."/".$newFile[0]);
    }

    $zip->close();

    header("Content-Type: application/zip");
    header("Content-Disposition: attachment; filename=\"$zipTitle.zip\"");
    header("Content-Length: ".filesize($filename));
    readfile($filename);
    unlink($filename);

    return true;

}

function setAlbumPublic($albumID, $password) {

	global $database;

	$result = $database->query("SELECT public FROM lychee_albums WHERE id = '$albumID';");
	$row = $result->fetch_object();
	if ($row->public == 0){
	    $public = 1;
	} else {
	    $public = 0;
	}
	$result = $database->query("UPDATE lychee_albums SET public = '$public', password = NULL WHERE id = '$albumID';");
	if (!$result) return false;
	if ($public==1) {
		$result = $database->query("UPDATE lychee_photos SET public = 0 WHERE album = '$albumID';");
		if (!$result) return false;
	}

	if (strlen($password)>0) return setAlbumPassword($albumID, $password);
	else return true;

}

function setAlbumPassword($albumID, $password) {

	global $database;

	$result = $database->query("UPDATE lychee_albums SET password = '$password' WHERE id = '$albumID';");

	if (!$result) return false;
	return true;

}

function checkAlbumPassword($albumID, $password) {

	global $database;

	$result = $database->query("SELECT password FROM lychee_albums WHERE id = '$albumID';");
	$row = $result->fetch_object();
	if ($row->password=="") return true;

	else if ($row->password==$password) return true;
	else return false;

}

function isAlbumPublic($albumID) {

	global $database;

	$result = $database->query("SELECT public FROM lychee_albums WHERE id = '$albumID';");
	$row = $result->fetch_object();

	if ($row->public==1) return true;
	else return false;

}

?>