Possibly complete manifest

controllers/manifest.mjs

@@ -6,6 +6,10 @@ import Canvas from '../src/Canvas.js';
 import Image from '../src/Image.js';
 
 import * as fs from 'fs';
+
+/**
+ * @typedef {Obj}
+ */
 /**
  * Generate a manifest object to serve
  * @param {string} manifestId 
@@ -14,17 +18,14 @@ export default async function generateManifest(manifestId) {
 	const IIIF_API_VERSION = process.env.IIIF_API_VERSION;
 	const BASE_URL = process.env.BASE_URL;
 
-	const manifest = new Manifest(IIIF_API_VERSION, BASE_URL);
-	const sequence = new Sequence();
-	const canvas = new Canvas(IIIF_API_VERSION, BASE_URL);
-	const image = new Image(4000, 3000);
-	canvas.setThumbnail();
-	canvas.addImage(image);
-	sequence.addCanvas(canvas);
-	manifest.addSequence(sequence);
+	let manifest = new Manifest(IIIF_API_VERSION, BASE_URL);
 	manifest.generateID(manifestId);
-
-    console.log(await getImageList(manifestId));
+	
+	manifest = await populateCanvases(
+		manifest, 
+		await getImageList(manifestId), 
+		manifestId
+	);
 
     return manifest.toObject();
 }
@@ -32,9 +33,74 @@ export default async function generateManifest(manifestId) {
  * @param {string} manifestId 
  */
 async function getImageList(manifestId) {
-    let folderName = manifestId.replace(/pherc-(\d+)-(\w+)$/, function (match, g1, g2) {
+    let folderName = manifestId.replace(/pherc-(\d+)-(\w+)$/, function (_match, g1, g2) {
         return `PHerc_${g1}_${g2.toUpperCase()}`;
     });
 
-    return await fs.promises.readdir(`./test-images/${folderName}`);
+	folderName += '_iiif';
+
+    return await fs.promises.readdir(`${process.env.IMAGES_DIR}/${folderName}`);
+}
+/**
+ * @todo Read height & width from info.json
+ * @param {Manifest} manifest
+ * @param {string[]} images List of image filenames from folder
+ * @returns {Manifest}
+ */
+async function populateCanvases(manifest, images, manifestId) {
+	const IIIF_API_VERSION = process.env.IIIF_API_VERSION;
+	const BASE_URL = process.env.BASE_URL;
+	const sequence = new Sequence(BASE_URL);
+	// There's only one sequence
+	sequence.generateID(manifestId, 0);
+
+	for (let img of images) {
+		let canvas = new Canvas(IIIF_API_VERSION, BASE_URL);
+		const canvasName = img.split('_')[3].replace(/\.[\w\d]{2,3}$/,'');
+
+		canvas.generateID(manifestId, canvasName);
+		canvas.setLabel(`${manifestId}-${canvasName.toLowerCase()}`);
+
+		let image = new Image(canvas.id);
+		image.generateID(process.env.IMAGE_SERVER_URL, img);
+		const imgSize = await getImageSize(image.id);
+		image.setSize(imgSize.height, imgSize.width);
+
+		canvas.setThumbnail(
+			imgSize.thumb.height,
+			imgSize.thumb.width,
+			image.id
+		);
+
+		canvas.addImage(image);
+		sequence.addCanvas(canvas);
+	}
+
+	manifest.addSequence(sequence);
+
+	return manifest;
+}
+/**
+ * @todo Read height & width from info.json
+ * @param {string} imageId The image's id as a URL to the image server
+ * @returns {{width: number, height: number, thumb: {width: number, height: number}}}
+ */
+async function getImageSize(imageId) {
+	let infoURL = imageId.replace(/full.*$/,'info.json');
+	const res = await fetch(infoURL);
+
+	let size = {};
+
+	if (res.ok) {
+		const infoJson = await res.json();
+		const maxSize = infoJson.sizes[infoJson.sizes.length - 1];
+		size.height = maxSize.height;
+		size.width = maxSize.width;
+		size.thumb = {
+			width: infoJson.sizes[1].width,
+			height: infoJson.sizes[1].height,
+		}
+	}
+
+	return size;
 }