market-album.ts

import { Attachment, AttachmentFactoryOptions } from './attachment';

import { AttachmentType } from '../../utils/constants';
import { PhotoAttachment, IPhotoAttachmentPayload } from './photo';

export interface IMarketAlbumAttachmentPayload {
    id: number;
    owner_id: number;
    access_key?: string;

    title?: string;
    photo?: IPhotoAttachmentPayload;
    count?: number;
    updated_time?: number;
}
export type MarketAlbumAttachmentOptions =
    AttachmentFactoryOptions<IMarketAlbumAttachmentPayload>;

export class MarketAlbumAttachment
    extends Attachment<IMarketAlbumAttachmentPayload, AttachmentType.MARKET_ALBUM | 'market_album'> {
    public photo?: PhotoAttachment;

    /**
     * Constructor
     */
    public constructor(options: MarketAlbumAttachmentOptions) {
        super({
            ...options,

            type: AttachmentType.MARKET_ALBUM,
        });

        this.$filled = this.payload.title !== undefined && this.payload.updated_time !== undefined;

        this.applyPayload(options.payload);
    }

    /**
     * Load attachment payload
     */
    public async loadAttachmentPayload(): Promise<void> {
        if (this.$filled) {
            return;
        }

        const { items } = await this.api.market.getAlbumById({
            owner_id: this.ownerId,
            album_ids: this.id,
        });

        this.$filled = true;

        this.applyPayload(items[0] as IMarketAlbumAttachmentPayload);
    }

    /**
     * Returns album title
     */
    get title(): string | undefined {
        return this.payload.title;
    }

    /**
     * Returns count of products on the album
     */
    get count(): number | undefined {
        return this.payload.count;
    }

    /**
     * Returns the date when this album was updated
     */
    get updatedAt(): number | undefined {
        return this.payload.updated_time;
    }

    /**
     * Applies the payload
     */
    private applyPayload(payload: IMarketAlbumAttachmentPayload): void {
        this.payload = payload;

        if (this.payload.photo) {
            this.photo = new PhotoAttachment({
                api: this.api,
                payload: this.payload.photo,
            });
        }
    }
}