web/functions/space.php

<?php
require_once 'core.php';
require_once 'db.php';
require_once 'user.php';
require_once 'post.php';

class Space
{
    private int $id;
    private string $name;
    private string $description;
    private int $visibility;
    private ?array $members;
    private ?array $posts;
    private ?Space $parent;

    public function __construct(int $id, string $name, string $description, int $visibility, ?array $members, ?array $posts, ?Space $parent = null, bool $favorited = false)
    {
        $this->name = $name;
        $this->description = $description;
        $this->visibility = $visibility;
        $this->members = $members;
        $this->posts[] = $posts;
        $this->parent = $parent;

        if ($id < 0) {
            $this->id = $id * -1;
            error_log('ID: ' . $this->id);

            $stmt = 'INSERT INTO space (id, name, description, visibility, parentSpace) VALUES (?, ?, ?, ?, ?)';
            exec_stmt($stmt, 'issii', $this->id, $name, $description, $visibility, (isset($parent) ? $parent->getId() : null));
            error_log('Added space in DB');
        } else
            $this->id = $id;
    }

    public static function exists(int $id): bool
    {
        $stmt = 'SELECT count(id) FROM space WHERE id = ?';
        $result = exec_stmt($stmt, 'i', $id)->fetch_assoc();

        if ($result['count(id)'] == 1)
            return true;
        else if ($result['count(id)'] > 1)
            return true;
        else
            return false;

        return true;
    }

    public static function addUserToSpace(int $user, int $space, int $role = 3, bool $favorited = false)
    {
        $stmt = 'INSERT INTO spaceMembers (user, space, role, favorited) VALUES (?, ?, ?, ?)';
        exec_stmt($stmt, 'iiii', $user, $space, $role, $favorited);
    }

    public function getSubSpaces(): ?array
    {
        $stmt = 'SELECT id FROM space WHERE parentSpace = ?';
        $rawSubSpaces = exec_stmt($stmt, 'i', $this->id);

        $subSpaces = [];
        foreach ($rawSubSpaces as $ss) {
            $subSpaces[] = Space::retrieveFromDB($ss['id']);
        }

        return $subSpaces;
    }

    public function getParentSpace(): ?Space
    {
        return $this->parent;
    }

    public function getCardHTML(): string
    {
        $html = '
            <div class="full_width std_border padding center top_margin bottom_margin rel" id="space-' . $this->id . '">
                <a href="spaces.php?view=show&id=' . $this->id . '" class="fillDiv spaceCard"></a>
                    <div class="row space_between full_width">
                        <div class="column std_width">
                            <h4>' . $this->name . '</h4>
                        </div>
                        
        ';

        if (isset($_SESSION['user'])) {
            $user = unserialize($_SESSION['user']);
            if ($user->getId() == $this->getOwner()->getId()) {
                $html .= '
                    <div class="dropdown">
                        <i class="nf nf-md-dots_horizontal"></i>
                        <div class="sm_border padding glass dropdownContent">
                        <a class="underline link" onclick="deleteSpace(' . $this->id . ')">Delete</a>
                        </div>
                    </div>
                ';
            }
        }

        $html .= '
                    </div>
                    <div class="row full_width">
                        <p>' . $this->description . '</p>
                    </div>
            </div>
        ';

        return $html;
    }

    public function getOwner(): User
    {
        $stmt = 'SELECT user FROM spaceMembers WHERE space = ? AND role = ?';
        $user = exec_stmt($stmt, 'ii', $this->id, 1)->fetch_assoc();

        return User::retrieveFromDB($user['user']);
    }

    public static function retrieveFromDB(int $space, int $user = -1): ?Space
    {
        if ($user != -1) {
            $stmt = 'SELECT * FROM spaceMembers WHERE space = ? AND user = ?';
            $isMember = exec_stmt($stmt, 'ii', $space, $user)->fetch_assoc();
            if (!$isMember)
                return null;
        } else {
            $stmt = 'SELECT visibility FROM space WHERE id = ?';
            $isOpen = exec_stmt($stmt, 'i', $space);
            if (!$isOpen)
                return null;
        }

        $stmt = 'SELECT * FROM space WHERE id = ?';
        $rawSpace = exec_stmt($stmt, 'i', $space)->fetch_assoc();

        if ($rawSpace) {
            if (!empty($rawSpace['parentSpace']))
                $parent = Space::retrieveFromDB($rawSpace['parentSpace'], $user);
            else
                $parent = null;

            $stmt = 'SELECT user FROM spaceMembers WHERE space = ?';
            $members = [];
            $rawMembers = exec_stmt($stmt, 'i', $rawSpace['id']);
            foreach ($rawMembers as $m)
                $members[] = User::retrieveFromDB($m['user']);

            $stmt = 'SELECT post FROM spacePosts INNER JOIN post ON spacePosts.post = post.id WHERE space = ? ORDER BY post.createdAt DESC';
            $posts = [];
            $rawPosts = exec_stmt($stmt, 'i', $rawSpace['id']);
            while ($row = $rawPosts->fetch_assoc())
                $posts[] = Post::retrieveFromDB($row['post']);

            return new Space($rawSpace['id'], $rawSpace['name'], $rawSpace['description'], $rawSpace['visibility'], $members, $posts, $parent);
        } else
            return null;
    }

    public function allowUser(User $user)
    {
        return in_array($user, $this->members);
    }

    public function getPosts()
    {
        return $this->posts;
    }

    public function __toString()
    {
        echo 'todo: this should be JSON';
    }

    public function getId(): int
    {
        return $this->id;
    }

    public function getName(): string
    {
        return $this->name;
    }

    public function getDescription(): string
    {
        return $this->description;
    }

    public function getVisibility(): int
    {
        return $this->visibility;
    }
}