frontent: add date handling

2 files changed, 32 insertions, 3 deletions

diff --git a/static/pages/image-viewer/index.css b/static/pages/image-viewer/index.css
index ec98173..8b57f58 100644
--- a/static/pages/image-viewer/index.css
+++ b/static/pages/image-viewer/index.css
@@ -26,3 +26,13 @@
 	font-style: normal;
 	color: var(--fg-disabled);
 }
+
+#date {
+	font-size: 1.2em;
+	font-weight: bold;
+	background: #efefef99;
+	backdrop-filter: blur(10px);
+	padding: 10px;
+	border-radius: var(--border-radius);
+	box-shadow: #223223aa 1px 1px 4px;
+}
diff --git a/static/pages/image-viewer/index.js b/static/pages/image-viewer/index.js
index 73b824e..62e39d8 100644
--- a/static/pages/image-viewer/index.js
+++ b/static/pages/image-viewer/index.js
@@ -1,6 +1,8 @@
 import * as sfw from 'sfw';
 const { Div, Img } = sfw.element.native;
 
+import Month from '../../month.js';
+
 import Image from '../../widgets/image/index.js';
 
 const css = await sfw.css(import.meta.url, './index.css')
@@ -9,16 +11,19 @@ export default class ImageViewer extends sfw.element.Container {
 	#container
 	#subtitle
 	#images
+	#current_month
 
 	constructor() {
 		super({ css });
 
+		this.#current_month = null;
+
 		this.#images = [];
 
 		this.body.append(
 			this.#container = Div.new({
 				id: 'container',
-				onscroll: () => this.#images.forEach(image => this.#preload(image)),
+				onscroll: () => this.preload_all(),
 				children: [
 					this.#subtitle = Div.new({
 						id: 'subtitle',
@@ -30,11 +35,21 @@ export default class ImageViewer extends sfw.element.Container {
 	}
 
 	add(metadata) {
+		const month = Month.from_unix(metadata.timestamp);
+
+		if (month != this.#current_month && !(month?.is_same(this.#current_month))) {
+			const content = month == null ? 'No Date' : `${month.name} ${month.year}`;
+			this.#current_month = month;
+			const title = Div.new({
+				id: 'date',
+				innerText: content,
+			})
+			this.#container.insertBefore(title, this.#subtitle);
+		}
+
 		const image = Image.new({ metadata });
 		this.#images.push(image);
 		this.#container.insertBefore(image, this.#subtitle);
-
-		this.#preload(image);
 	}
 
 	clear() {
@@ -47,6 +62,10 @@ export default class ImageViewer extends sfw.element.Container {
 		image.scrollIntoView({ behavior: 'instant' })
 	}
 
+	preload_all() {
+		this.#images.forEach(image => this.#preload(image))
+	}
+
 	#preload(image) {
 		const loading_zone_after = (this.#container.scrollTop + this.#container.offsetHeight) * 2;
 		const loading_zone_before = this.#container.scrollTop - (this.#container.offsetHeight - image.offsetHeight) * 2;