Add support for v3 manifests

package.json

@@ -56,5 +56,8 @@
     "jsonld": "^5.2.0",
     "rollup": "^3.20.2",
     "rollup-plugin-license": "^3.0.1"
+  },
+  "dependencies": {
+    "iiif-builder": "^2.0.0"
   }
 }

src/manifest.js

@@ -1,5 +1,5 @@
 const assert = require('assert')
-const { CONTEXTS, dc, dcterms, oa, rdf, rdfs, sc, svcs } = require('./ns')
+const { CONTEXTS, as, dc, dcterms, oa, rdf, rdfs, iiif_prezi, schema } = require('./ns')
 
 async function expand(jsonld, data) {
   return jsonld.expand(data, {
@@ -41,8 +41,9 @@ function blank(value) {
 }
 
 class Resource {
-  constructor(data = {}) {
+  constructor(data = {}, isUpgraded = false) {
     this.data = data
+    this.isUpgraded = isUpgraded
   }
 
   get props() {
@@ -61,7 +62,7 @@ class Resource {
   }
 
   get metadata() {
-    return this.data[sc('metadataLabels')]?.[0]['@list'] || []
+    return this.data[iiif_prezi('metadataEntries')]?.[0]['@list'] || []
   }
 
   getDescriptiveProperties() {
@@ -70,7 +71,7 @@ class Resource {
     let [title, description, date] = this.values(
       rdfs('label'),
       dc('description'),
-      sc('presentationDate')
+      iiif_prezi('navigationDate')
     )
 
     if (!blank(title))
@@ -88,7 +89,7 @@ class Resource {
 
     let [rights, attribution] = this.values(
       dcterms('rights'),
-      sc('attributionLabel')
+      iiif_prezi('requiredStatement')
     )
 
     if (!blank(rights))
@@ -189,44 +190,44 @@ class Image extends Resource {
   get url() {
     let [body] = this.values(oa('hasBody'))[0]
     let format = body[dc('format')]?.[0]['@value']
-    let service = body[svcs('has_service')]?.[0]
-
-    if (service)
-      return `${service['@id']}/full/full/0/default${Image.ext(format)}`
-    else
-      return body['@id']
+    let service = body[schema('potentialAction')]?.[0]
+    return service ?
+      (this.isUpgraded ?
+      `${service['@id']}/full/full/0/default${Image.ext(format)}` :
+      `${service['@id']}/full/max/0/default${Image.ext(format)}`) :
+      body['@id']
   }
 }
 
 class Canvas extends Resource {
   get images() {
-    return (this.data[sc('hasImageAnnotations')]?.[0]['@list'] || []).map(
-      (data) => new Image(data)
+    return (this.data[
+      as('items')]?.[0]['@list'][0][as('items')]?.[0]['@list'] || []).map(
+      (data) => new Image(data, this.isUpgraded)
     )
   }
 }
 
 class Manifest extends Resource {
-  static async parse(data, jsonld) {
+  static async parse(data, jsonld, isUpgraded) {
     let expanded = await expand(jsonld, data)
-
     return expanded.map((manifest) => {
       assert.equal(
-        sc('Manifest'),
+        iiif_prezi('Manifest'),
         manifest['@type']?.[0],
-        'not a IIIF Presentation API 2.0 manifest'
+        'not a IIIF Presentation API 3.0 manifest'
       )
-      return new this(manifest)
+      return new this(manifest, isUpgraded)
     })
   }
 
   get canvases() {
     // Currently returns only the primary sequence!
     return (
-      this.data[sc('hasSequences')]?.[0]['@list'][0][sc('hasCanvases')]?.[0][
-      '@list'
-      ] || []
-    ).map((data) => new Canvas(data))
+      this.data[as('items')]?.[0]['@list'] || []
+    ).map(
+      (data) => new Canvas(data, this.isUpgraded)
+    )
   }
 
   get images() {

src/ns.js

@@ -13,14 +13,16 @@ const alias = (ctx, name) => ns((ctx['@context'][0] || ctx['@context'])[name])
 
 module.exports = {
   ns,
-  dc: alias(pv2, 'dc'),
-  dcterms: alias(pv2, 'dcterms'),
-  iiif: alias(image, 'iiif'),
-  oa: alias(pv2, 'oa'),
-  rdf: alias(pv2, 'rdf'),
-  rdfs: alias(pv2, 'rdfs'),
-  sc: alias(pv2, 'sc'),
-  svcs: alias(pv2, 'svcs'),
+  as: alias(pv3, 'as'),
+  dc: alias(pv3, 'dc'),
+  dcterms: alias(pv3, 'dcterms'),
+  iiif_image: alias(image, 'iiif_image'),
+  oa: alias(pv3, 'oa'),
+  rdf: alias(pv3, 'rdf'),
+  rdfs: alias(pv3, 'rdfs'),
+  iiif_prezi: alias(pv3, 'iiif_prezi'),
+  schema: alias(pv3, 'schema'),
+  svcs: alias(pv3, 'svcs'),
 
   CONTEXTS: {
     'http://iiif.io/api/image/2/context.json': image,

src/plugin.js

@@ -1,4 +1,5 @@
 const { readFile } = require('fs/promises')
+const { IIIFBuilder } = require('iiif-builder')
 const { Manifest } = require('./manifest')
 const LABELS = require('./labels.json')
 
@@ -24,7 +25,16 @@ class IIIFPlugin {
     for (let file of files) {
       try {
         let data = JSON.parse(await readFile(file))
-        let [manifest] = await Manifest.parse(data, this.context.json)
+        let isUpgraded = false
+        if (data['@context'] === 'http://iiif.io/api/presentation/2/context.json') {
+          const builder = new IIIFBuilder()
+          await builder.vault.loadManifest(data['@id'], data)
+          data = builder.toPresentation3({ id: data['@id'], type: 'Manifest' })
+          isUpgraded = true
+        }
+        let [manifest] = await Manifest.parse(
+          data, this.context.json, isUpgraded
+        )
 
         payload.data.push(this.convert(manifest))
       } catch (e) {