@allmaps/iiif-parser/dist/classes/iiif.js

Allmaps IIIF parser

import { Image1Schema, Image2Schema, Image3Schema, 
// TODO: add Canvas!
Manifest2Schema, Manifest3Schema, Collection2Schema, Collection3Schema } from '../schemas/iiif.js';
import { Image1ContextString } from '../schemas/image.1.js';
import { Image } from './image.js';
import { Manifest } from './manifest.js';
import { Collection } from './collection.js';
/**
 * Base class that contains a static parse function for IIIF resources
 */
export class IIIF {
    /**
     * Parses as IIIF resource and returns a class containing the parsed version
     * @param iiifResource - Source data of a IIIF resource
     * @param majorVersion - IIIF API version of resource. If not provided, it will be determined automatically
     * @returns Parsed IIIF resource
     */
    static parse(iiifResource, majorVersion = null) {
        if (iiifResource && typeof iiifResource === 'object') {
            if (majorVersion === 1 ||
                ('@context' in iiifResource &&
                    iiifResource['@context'] === Image1ContextString)) {
                const parsedImage = Image1Schema.parse(iiifResource);
                return new Image(parsedImage);
            }
            else if (majorVersion === 2 || '@id' in iiifResource) {
                if ('protocol' in iiifResource &&
                    iiifResource.protocol === 'http://iiif.io/api/image') {
                    const parsedImage = Image2Schema.parse(iiifResource);
                    return new Image(parsedImage);
                }
                else if ('@type' in iiifResource &&
                    iiifResource['@type'] === 'sc:Manifest') {
                    const parsedManifest = Manifest2Schema.parse(iiifResource);
                    return new Manifest(parsedManifest);
                }
                else if ('@type' in iiifResource &&
                    iiifResource['@type'] === 'sc:Collection') {
                    const parsedCollection = Collection2Schema.parse(iiifResource);
                    return new Collection(parsedCollection);
                }
            }
            else if (majorVersion === 3 || 'id' in iiifResource) {
                if ('protocol' in iiifResource &&
                    iiifResource.protocol === 'http://iiif.io/api/image') {
                    const parsedImage = Image3Schema.parse(iiifResource);
                    return new Image(parsedImage);
                }
                else if ('type' in iiifResource && iiifResource.type === 'Manifest') {
                    const parsedManifest = Manifest3Schema.parse(iiifResource);
                    return new Manifest(parsedManifest);
                }
                else if ('type' in iiifResource &&
                    iiifResource.type === 'Collection') {
                    const parsedCollection = Collection3Schema.parse(iiifResource);
                    return new Collection(parsedCollection);
                }
            }
        }
        // TODO: improve error message
        throw new Error('Invalid IIIF data or unsupported IIIF type');
    }
}