Create Resource class

src/resource.js

@@ -0,0 +1,44 @@
+const contexts = {
+ "@context": [{
+ "sc": "http://iiif.io/api/presentation/2#",
+ "iiif": "http://iiif.io/api/image/2#",
+ "exif": "http://www.w3.org/2003/12/exif/ns#",
+ "oa": "http://www.w3.org/ns/oa#",
+ "cnt": "http://www.w3.org/2011/content#",
+ "dc": "http://purl.org/dc/elements/1.1/",
+ "dcterms": "http://purl.org/dc/terms/",
+ "dctypes": "http://purl.org/dc/dcmitype/",
+ "doap": "http://usefulinc.com/ns/doap#",
+ "foaf": "http://xmlns.com/foaf/0.1/",
+ "rdf": "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
+ "rdfs": "http://www.w3.org/2000/01/rdf-schema#",
+ "xsd": "http://www.w3.org/2001/XMLSchema#",
+ "svcs": "http://rdfs.org/sioc/services#",
+ "as": "http://www.w3.org/ns/activitystreams#",
+ }]
+}
+const ns = (prefix) => (name = '') => `${prefix}${name}`;
+const alias = (ctx, name) => ns((ctx['@context'][0] || ctx['@context'])[name]);
+
+// Create aliases for the namespaces
+const dcterms = alias(contexts, 'dcterms');
+const exif = alias(contexts, 'exif');
+
+function extractValue(data, property) {
+ return data[property]?.[0]['@value'];
+}
+
+class Resource {
+ constructor(data = {}) {
+ this.data = data
+ this.identifier = extractValue(data, dcterms('identifier'));
+ this.title = extractValue(data, dcterms('title'));
+ this.description = extractValue(data, dcterms('description'));
+ this.source = extractValue(data, dcterms('source'));
+ this.rights = extractValue(data, dcterms('rights'));
+ this.latitude = extractValue(data, exif('gpsLatitude'));
+ this.longitude = extractValue(data, exif('gpsLongitude'));
+ }
+}
+
+module.exports = { Resource }