<?php
    $statementCreateTable = $RUNTIME['PDO']->prepare("CREATE TABLE IF NOT EXISTS `UserIdentitys` (`PrincipalID` CHAR(36) NOT NULL, `IdentityID` CHAR(36) NOT NULL, PRIMARY KEY (`PrincipalID`, `IdentityID`)) ENGINE=MyISAM CHARSET=utf8mb3 COLLATE=utf8mb3_general_ci");
    $statementCreateTable->execute();
    $statementCreateTrigger = $RUNTIME['PDO']->prepare("CREATE TRIGGER IF NOT EXISTS del_id_trig AFTER DELETE ON UserAccounts FOR EACH ROW DELETE FROM UserIdentitys WHERE UserIdentitys.PrincipalID = OLD.PrincipalID OR UserIdentitys.IdentityID = OLD.PrincipalID");
    $statementCreateTrigger->execute();

    if ($_SERVER['REQUEST_METHOD'] == 'POST') {
        include_once 'app/FormValidator.php';
        if (isset($_POST['enableIdent'])) {
            $validator = new FormValidator(array(
                'uuid' => array('required' => true, 'regex' => '/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/')
            ));

            if ($validator->isValid($_POST)) {
                $statement = $RUNTIME['PDO']->prepare("SELECT 1 FROM UserIdentitys WHERE PrincipalID = :PrincipalID AND IdentityID = :IdentityID LIMIT 1");
                $statement->execute(['PrincipalID' => $_SESSION['UUID'], 'IdentityID' => $_POST['uuid']]);
        
                $statementPresence = $RUNTIME['PDO']->prepare("SELECT 1 FROM Presence WHERE UserID = :PrincipalID LIMIT 1");
                $statementPresence->execute(['PrincipalID' => $_SESSION['UUID']]);
        
                if ($statementPresence->rowCount() == 0) {
                    if ($statement->rowCount() == 1) {
                        $statementAuth = $RUNTIME['PDO']->prepare('UPDATE auth SET UUID = :IdentityID WHERE UUID = :PrincipalID');
                        $statementAuth->execute(['IdentityID' => $_POST['uuid'], 'PrincipalID' => $_SESSION['UUID']]);
        
                        $statementUserIdentitys = $RUNTIME['PDO']->prepare('UPDATE UserIdentitys SET PrincipalID = :IdentityID WHERE PrincipalID = :PrincipalID');
                        $statementUserIdentitys->execute(['IdentityID' => $_POST['uuid'], 'PrincipalID' => $_SESSION['UUID']]);
        
                        $statementFriends = $RUNTIME['PDO']->prepare('UPDATE Friends SET PrincipalID = :IdentityID WHERE PrincipalID = :PrincipalID');
                        $statementFriends->execute(['IdentityID' => $_POST['uuid'], 'PrincipalID' => $_SESSION['UUID']]);
        
                        //$statementReFriends = $RUNTIME['PDO']->prepare('UPDATE Friends SET Friend = :IdentityID WHERE Friend = :PrincipalID');
                        //$statementReFriends->execute(['IdentityID' => $_POST['uuid'], 'PrincipalID' => $_SESSION['UUID']]);
        
                        $statementInventoryFolders = $RUNTIME['PDO']->prepare('UPDATE inventoryfolders SET agentID = :IdentityID WHERE agentID = :PrincipalID AND type != :InventarTyp');
                        $statementInventoryFolders->execute(['IdentityID' => $_POST['uuid'], 'PrincipalID' => $_SESSION['UUID'], 'InventarTyp' => 46]);
        
                        $statementInventoryItems = $RUNTIME['PDO']->prepare('UPDATE inventoryitems SET avatarID = :IdentityID WHERE avatarID = :PrincipalID');
                        $statementInventoryItems->execute(['IdentityID' => $_POST['uuid'], 'PrincipalID' => $_SESSION['UUID']]);
        
                        $statementGroupMembership = $RUNTIME['PDO']->prepare('UPDATE os_groups_membership SET PrincipalID = :IdentityID WHERE PrincipalID = :PrincipalID');
                        $statementGroupMembership->execute(['IdentityID' => $_POST['uuid'], 'PrincipalID' => $_SESSION['UUID']]);
        
                        $statementGroupRoles = $RUNTIME['PDO']->prepare('UPDATE os_groups_rolemembership SET PrincipalID = :IdentityID WHERE PrincipalID = :PrincipalID');
                        $statementGroupRoles->execute(['IdentityID' => $_POST['uuid'], 'PrincipalID' => $_SESSION['UUID']]);
        
                        $statementGroupRoles = $RUNTIME['PDO']->prepare('DELETE FROM Presence WHERE UserID = :PrincipalID');
                        $statementGroupRoles->execute(['PrincipalID' => $_SESSION['UUID']]);
        
                        $_SESSION['LOGIN'] = 'false';
                        session_destroy();
                    }
                } else {
                    $_SESSION['identities_err'] = 'Du kannst die Identität nicht ändern, während du angemeldet bist. Bitte schließe den Viewer.';
                }
            }
        } elseif (isset($_POST['createIdent'])) {
            $validator = new FormValidator(array(
                'newName' => array('required' => true, 'regex' => '/^[^\\/<>\s]{1,64} [^\\/<>\s]{1,64}$/')
            ));

            if ($validator->isValid($_POST)) {
                $avatarNameParts = explode(" ", trim($_POST['newName']));

                if (count($avatarNameParts) == 2) {
                    $statement = $RUNTIME['PDO']->prepare("SELECT 1 FROM UserAccounts WHERE FirstName = :FirstName AND LastName = :LastName LIMIT 1");
                    $statement->execute(['FirstName' => trim($avatarNameParts[0]), 'LastName' => trim($avatarNameParts[1])]);
        
                    if ($statement->rowCount() == 0) {
                        include_once 'app/OpenSim.php';
                        $avatarUUID = (new OpenSim())->gen_uuid();
        
                        $statementAccounts = $RUNTIME['PDO']->prepare('INSERT INTO UserAccounts (PrincipalID, ScopeID, FirstName, LastName, Email, ServiceURLs, Created, UserLevel, UserFlags, UserTitle, active) VALUES (:PrincipalID, :ScopeID, :FirstName, :LastName, :Email, :ServiceURLs, :Created, :UserLevel, :UserFlags, :UserTitle, :active )');
                        $statementAccounts->execute(['PrincipalID' => $avatarUUID, 'ScopeID' => "00000000-0000-0000-0000-000000000000", 'FirstName' => $avatarNameParts[0], 'LastName' => $avatarNameParts[1], 'Email' => $_SESSION['EMAIL'], 'ServiceURLs' => "HomeURI= GatekeeperURI= InventoryServerURI= AssetServerURI= ", 'Created' => time(), 'UserLevel' => 0, 'UserFlags' => 0, 'UserTitle' => "", 'active' => 1]);
        
                        $statementUserIdentitys = $RUNTIME['PDO']->prepare('INSERT INTO UserIdentitys (PrincipalID, IdentityID) VALUES (:PrincipalID, :IdentityID)');
                        $statementUserIdentitys->execute(['PrincipalID' => $_SESSION['UUID'], 'IdentityID' => $avatarUUID]);
                    } else {
                        $_SESSION['identities_err'] = 'Dieser Name ist schon in Benutzung.';
                    }
                } else {
                    $_SESSION['identities_err'] = 'Der Name muss aus einem Vor und einem Nachnamen bestehen.';
                }
            }
        }
        elseif (isset($_POST['deleteIdent'])) {
            $validator = new FormValidator(array(
                'uuid' => array('required' => true, 'regex' => '/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/')
            ));

            if ($validator->isValid($_POST)) {
                $statementValidate = $RUNTIME['PDO']->prepare('SELECT 1 FROM UserIdentitys WHERE PrincipalID = ? AND IdentityID = ?');
                $statementValidate->execute([$_SESSION['UUID'], $_POST['uuid']]);

                if($statementValidate->fetch()) {
                    $statementDelete = $RUNTIME['PDO']->prepare('DELETE FROM UserAccounts WHERE PrincipalID = ?');
                    $statementDelete->execute([$_POST['uuid']]);
                }
            }
        }

        header('Location: index.php?page=identities');
        die();
    }

    $HTML->setHTMLTitle("Identitäten");
    $HTML->importSeitenInhalt("identities.html");

    $statementCheckForEntry = $RUNTIME['PDO']->prepare("SELECT 1 FROM UserIdentitys WHERE PrincipalID = ? LIMIT 1");
    $statementCheckForEntry->execute(array($_SESSION['UUID']));

    if ($statementCheckForEntry->rowCount() == 0) {
        $statement = $RUNTIME['PDO']->prepare('INSERT INTO `UserIdentitys` (PrincipalID, IdentityID) VALUES (:PrincipalID, :IdentityID)');
        $statement->execute(['PrincipalID' => $_SESSION['UUID'], 'IdentityID' => $_SESSION['UUID']]);
    }

    $table = '<table class="table"><thead><tr><th scope="col">Name</th><th scope="col">Aktionen</th></thead><tbody>%%ENTRY%%</tbody></table>';
    $statement = $RUNTIME['PDO']->prepare("SELECT IdentityID FROM UserIdentitys WHERE PrincipalID = ? ORDER BY IdentityID ASC");
    $statement->execute(array($_SESSION['UUID']));

    include_once 'app/OpenSim.php';
    $opensim = new OpenSim();

    while ($row = $statement->fetch()) {
        if ($row['IdentityID'] == $_SESSION['UUID']) {
            $entry = '<tr><td>'.htmlspecialchars(trim($opensim->getUserName($row['IdentityID']))).' <span class="badge badge-info">Aktiv</span></td><td>-</td></tr>';
        } else {
            $entry = '<tr><td>'.htmlspecialchars(trim($opensim->getUserName($row['IdentityID']))).'</td><td><form action="index.php?page=identities" method="post">%%CSRF%%<input type="hidden" name="uuid" value="'.htmlspecialchars($row['IdentityID']).'"><button type="submit" name="enableIdent" class="btn btn-success btn-sm">Aktivieren</button> <button type="submit" name="deleteIdent" class="btn btn-danger btn-sm">Löschen</button></form></td></tr>';
        }

        $table = str_replace("%%ENTRY%%", $entry."%%ENTRY%%", $table);
    }

    $table = str_replace("%%ENTRY%%", "", $table);
    $HTML->ReplaceSeitenInhalt("%%IDENT-LIST%%", $table);
    $HTML->ReplaceSeitenInhalt("%%link%%", ' ');

    $message = '';
    if (isset($_SESSION['identities_err'])) {
        $message = '<div class="alert alert-danger" role="alert">'.$_SESSION['identities_err'].'</div>';
        unset($_SESSION['identities_err']);
    }
    $HTML->ReplaceSeitenInhalt("%%MESSAGE%%", $message);
    
    $HTML->build();
    echo $HTML->ausgabe();