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path: root/Digitigrade/Model/Note.php
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<?php
namespace Digitigrade\Model;

use Digitigrade\Db;

class Note extends PushableModel {
    public ?int $id;
    public string $uri;
    public \DateTimeImmutable $created;
    public ?\DateTimeImmutable $modified;
    public Actor $author;
    public ?string $summary;
    public string $plainContent;
    // associative array mapping strings to strings - mimetypes to content
    public array $formattedContent = [];
    public string $language;
    /**
     * @var Actor[]
     */
    public array $mentions = [];
    public ?Note $inReplyTo;
    public ?Note $threadApex;
    public NotePrivacy $privacy;
    /**
     * @var NoteAttachment[]
     */
    public array $attachments = [];
    public array $extensions = [];

    /**
     * Creates and saves a new note with the specified fields pre-set
     * @param Actor $author who wrote the note
     * @param string $plainContent text of the note, without any markup
     * @param string $language ISO 639-3 3-letter language code
     * @param ?string $summary summary line or content warning
     * @param NotePrivacyScope $scope who is allowed to view this note
     * @param bool $indexable whether this note should be findable e.g. in search results
     * @return self
     */
    public static function create(
        Actor $author,
        string $plainContent,
        string $language,
        ?string $summary = null,
        NotePrivacyScope $scope = NotePrivacyScope::PUBLIC ,
        bool $indexable = true
    ): self {
        $note = new self();
        // can't set the note uri properly until it's been saved and we have an id
        $note->uri = "UNKNOWN";
        $note->created = new \DateTimeImmutable();
        $note->author = $author;
        $note->summary = $summary;
        $note->plainContent = $plainContent;
        $note->language = $language;
        $note->privacy = new NotePrivacy();
        $note->privacy->scope = $scope;
        $note->privacy->indexable = $indexable;

        $note->save();
        $note->uri = path_to_uri("/post/$note->id");
        $note->save();

        return $note;
    }

    protected function getUpdateWhereClause(\PDO $db): ?string {
        if (self::findWhere('uri = ?', [$this->uri]) != null)
            return 'uri = ' . $db->quote($this->uri);
        if (self::findWhere('id = ?', [$this->id]) != null)
            return "id = $this->id";
        return null;
    }

    protected function hydrate() {
        $this->privacy = NotePrivacy::findWhere('note_id = ?', [$this->id]);
        $this->formattedContent = $this->findFormattedContents();
        $this->mentions = $this->findMentions();
        $this->attachments = NoteAttachment::findAllWhere('note_id = ?', [$this->id]);
    }

    protected function validate(): bool {
        // author has to be from the same instance as the note itself
        return hostname_from_uri($this->author->uri) == hostname_from_uri($this->uri);
    }

    private function findFormattedContents(): array {
        $pdo = Db::getInstance()->getPdo();
        $stmt = $pdo->prepare('SELECT mimetype, body FROM note_formatted_content WHERE note_id = ?');
        $stmt->execute([$this->id]);
        return $stmt->fetchAll(\PDO::FETCH_ASSOC);
    }

    private function findMentions(): array {
        $pdo = Db::getInstance()->getPdo();
        $stmt = $pdo->prepare('SELECT actor_id FROM note_mention WHERE note_id = ?');
        $stmt->execute([$this->id]);
        $actors = array_map(function ($actorId) {
            return Actor::find($actorId);
        }, $stmt->fetchAll(\PDO::FETCH_COLUMN, 0));
        return $actors;
    }

    public static function findAllWithAuthor(Actor $author): array {
        return self::findAllWhere('author = ?', [$author->id]);
    }

    public function getInteractions(): array {
        return Interaction::findAllWithTarget($this);
    }

    public function jsonSerialize(): array {
        return [
            'type' => 'note',
            'self' => path_to_uri("/post/$this->id"),
            'created' => $this->created->format('c'),
            'modified' => $this->modified?->format('c'),
            'author' => $this->author->uri,
            'summary' => $this->summary,
            'plainContent' => $this->plainContent,
            'formattedContent' => $this->formattedContent,
            'language' => $this->language,
            'mentions' => array_map(function (Actor $actor) {
                return $actor->uri;
            }, $this->mentions),
            'inReplyTo' => $this->inReplyTo?->uri,
            'threadApex' => $this->threadApex?->uri,
            'privacy' => $this->privacy,
            'attachments' => array_map(function (NoteAttachment $attachment) {
                return [
                    'type' => $attachment->type,
                    'href' => $attachment->href,
                    'description' => $attachment->description
                ];
            }, $this->attachments),
            //'extensions' => []
        ];
    }
}