<?php
declare(strict_types=1);

authorize();

$CollageID = $_POST['collageid'];
if (!is_number($CollageID)) {
    error(0);
}

$DB->query("
  SELECT UserID, CategoryID, Locked, MaxGroups, MaxGroupsPerUser
  FROM collages
  WHERE ID = '$CollageID'");
list($UserID, $CategoryID, $Locked, $MaxGroups, $MaxGroupsPerUser) = $DB->next_record();

if ($CategoryID === 0
&& $UserID !== $LoggedUser['ID']
&& !check_perms('site_collages_delete')) {
    error(403);
}

if (isset($_POST['name'])) {
    $DB->query("
    SELECT ID, Deleted
    FROM collages
    WHERE Name = '".db_string($_POST['name'])."'
      AND ID != '$CollageID'
    LIMIT 1");

    if ($DB->has_results()) {
        list($ID, $Deleted) = $DB->next_record();
        if ($Deleted) {
            $Err = 'A collage with that name already exists but needs to be recovered, please <a href="staffpm.php">contact</a> the staff team!';
        } else {
            $Err = "A collage with that name already exists: <a href='/collages.php?id=$ID'>$_POST[name]</a>.";
        }

        $ErrNoEscape = true;
        include(SERVER_ROOT.'/sections/collages/edit.php');
        error();
    }
}

$TagList = explode(',', $_POST['tags']);
foreach ($TagList as $ID => $Tag) {
    $TagList[$ID] = Misc::sanitize_tag($Tag);
}
$TagList = implode(' ', $TagList);

$Updates = array("Description='".db_string($_POST['description'])."', TagList='".db_string($TagList)."'");

if (!check_perms('site_collages_delete')
&& ($CategoryID === 0
&& $UserID === $LoggedUser['ID']
&& check_perms('site_collages_renamepersonal'))) {
    if (!stristr($_POST['name'], $LoggedUser['Username'])) {
        error("Your personal collage's title must include your username.");
    }
}

if (isset($_POST['featured'])
&& $CategoryID === 0
&& (($LoggedUser['ID'] === $UserID
&& check_perms('site_collages_personal'))
|| check_perms('site_collages_delete'))) {
    $DB->query("
    UPDATE collages
    SET Featured = 0
    WHERE CategoryID = 0
      AND UserID = $UserID");
    $Updates[] = 'Featured = 1';
}

if (check_perms('site_collages_delete')
|| ($CategoryID === 0
&& $UserID === $LoggedUser['ID']
&& check_perms('site_collages_renamepersonal'))) {
    $Updates[] = "Name = '".db_string($_POST['name'])."'";
}

if (isset($_POST['category'])
&& !empty($CollageCats[$_POST['category']])
&& $_POST['category'] !== $CategoryID
&& ($_POST['category'] !== 0
|| check_perms('site_collages_delete'))) {
    $Updates[] = 'CategoryID = '.$_POST['category'];
}

if (check_perms('site_collages_delete')) {
    if (isset($_POST['locked']) !== $Locked) {
        $Updates[] = 'Locked = ' . ($Locked ? "'0'" : "'1'");
    }

    if (isset($_POST['maxgroups']) && ($_POST['maxgroups'] === 0 || is_number($_POST['maxgroups'])) && $_POST['maxgroups'] !== $MaxGroups) {
        $Updates[] = 'MaxGroups = ' . $_POST['maxgroups'];
    }

    if (isset($_POST['maxgroups']) && ($_POST['maxgroupsperuser'] === 0 || is_number($_POST['maxgroupsperuser'])) && $_POST['maxgroupsperuser'] !== $MaxGroupsPerUser) {
        $Updates[] = 'MaxGroupsPerUser = ' . $_POST['maxgroupsperuser'];
    }
}

if (!empty($Updates)) {
    $DB->query('
    UPDATE collages
    SET '.implode(', ', $Updates)."
    WHERE ID = $CollageID");
}

$Cache->delete_value('collage_'.$CollageID);
header('Location: collages.php?id='.$CollageID);