<?php
/*
 * ExerciseFolder.php - Vips response folder class for Stud.IP
 * Copyright (c) 2024  Elmar Ludwig
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 */

class ResponseFolder extends StandardFolder
{
    /**
     * @param string|Object $range_id_or_object
     * @param string        $user_id
     * @return bool
     */
    public static function availableInRange($range_id_or_object, $user_id)
    {
        return false;
    }

    /**
     * @param string $user_id
     * @return bool
     */
    public function isReadable($user_id)
    {
        $solution = VipsSolution::find($this->range_id);
        $assignment = $solution->assignment;

        if (!$assignment->checkViewPermission()) {
            return false;
        }

        if ($assignment->checkEditPermission() || $solution->user_id === $user_id) {
            return true;
        }

        $group = $assignment->getUserGroup($solution->user_id);
        $group2 = $assignment->getUserGroup($user_id);

        return isset($group, $group2)
            && $group->id === $group2->id;
    }

    /**
     * @param string $user_id
     * @return bool
     */
    public function isWritable($user_id)
    {
        $solution = VipsSolution::find($this->range_id);
        $assignment = $solution->assignment;

        if ($this->isReadable($user_id) && $assignment->checkAccess($user_id)) {
            return true;
        }

        return $assignment->checkEditPermission();
    }

    /**
     * @param string $user_id
     * @return bool
     */
    public function isEditable($user_id)
    {
        return false;
    }

    /**
     * @param string $user_id
     * @return bool
     */
    public function isSubfolderAllowed($user_id)
    {
        return false;
    }

    /**
     * @param FileRef|string $fileref_or_id
     * @param string $user_id
     * @return bool
     */
    public function isFileDownloadable($fileref_or_id, $user_id)
    {
        return $this->isReadable($user_id);
    }

    /**
     * @param FileRef|string $fileref_or_id
     * @param string $user_id
     * @return bool
     */
    public function isFileEditable($fileref_or_id, $user_id)
    {
        return $this->isWritable($user_id);
    }

    /**
     * @param FileRef|string $fileref_or_id
     * @param string $user_id
     * @return bool
     */
    public function isFileWritable($fileref_or_id, $user_id)
    {
        return $this->isWritable($user_id);
    }
}