feat: ui integration for note expiration dates (closes #5)

web/src/app.css

@@ -15,6 +15,7 @@
 	--light-foreground: #e0e0e0;
 	--light-accent: #303052;
 	--light-text: rgb(34, 40, 49);
+	--light-highlight-text: #c28e4a;
 	--light-error-text: #4b0000;
 	--light-error-background: #fcaaaae1;
 	--light-success-text: #004b0a;
@@ -24,6 +25,7 @@
 	--dark-foreground: #222222;
 	--dark-accent: #bebff7;
 	--dark-text: rgb(238, 238, 238);
+	--dark-highlight-text: #f7debe;
 	--dark-error-text: #fcadaa;
 	--dark-error-background: #4b0000e0;
 	--dark-success-text: #adfcaa;
@@ -499,6 +501,14 @@
 		@apply font-copernicus max-w-full pb-1 text-2xl wrap-break-word;
 	}
 
+	.note-title-exp-highlight {
+		@apply text-[var(--light-highlight-text)];
+	}
+
+	.dark .note-title-exp-highlight {
+		@apply text-[var(--dark-highlight-text)];
+	}
+
 	/* Limit title (display as input is always only one row tall) to max. 4 rows tall on short screens */
 	@media (max-width: 768px) {
 		.note-title-display {

web/src/lib/components/NoteEditor.svelte

@@ -10,6 +10,7 @@
 	import ViewEye from "$lib/icons/editor/ViewEye.svelte"
 	import Save from "$lib/icons/editor/Save.svelte"
 	import type { FullNote } from "$lib/logic/model"
+	import { formatTitleWithHighlight } from "$lib/util/contentVisual"
 
 	// props
 	export let note: FullNote
@@ -20,10 +21,12 @@
 
 	// constants
 	const TITLE_MAX_LENGTH = 150
+	const ZEROWIDTH_CHARACTERS = /^[\u200B\u200C\u200D\u200E\u200F\uFEFF]/
 
 	// local state
 	let editableTitle = note.title
 	let editableContent = note.content
+	let displayTitle = formatTitleWithHighlight(note.title)
 
 	// markdown parser with syntax highlight support
 	const marked = new Marked(
@@ -42,6 +45,7 @@
 	$: if (note && note.id) {
 		editableTitle = note.title
 		editableContent = note.content
+		displayTitle = formatTitleWithHighlight(note.title)
 	}
 
 	const handleContentChange = (
@@ -110,6 +114,8 @@
 	}
 
 	const handleSave = () => {
+		// only update the display title once the user saves the edits
+		displayTitle = formatTitleWithHighlight(editableTitle)
 		saveNote(editableTitle, editableContent)
 	}
 
@@ -135,7 +141,7 @@
 		})
 
 		// remove the most common zerowidth characters from the start of the file
-		marked.parse(markdown.replace(/^[\u200B\u200C\u200D\u200E\u200F\uFEFF]/, ""))
+		marked.parse(markdown.replace(ZEROWIDTH_CHARACTERS, ""))
 
 		return await marked.parse(markdown)
 	}
@@ -181,7 +187,7 @@
 			</div>
 		{:else}
 			<h1 class="note-title-display">
-				{note.title || "Untitled Note"}
+				{@html displayTitle}
 			</h1>
 		{/if}
 

web/src/lib/components/SettingsModal.svelte

@@ -3,7 +3,7 @@
 	import Close from "$lib/icons/Close.svelte"
 	import { isPasswordValid } from "$lib/util/authValidation"
 	import { onMount } from "svelte"
-	import { formatDate } from "$lib/util/contentVisual"
+	import { formatDateLong } from "$lib/util/contentVisual"
 
 	// props
 	export let onClose: () => void
@@ -163,13 +163,13 @@
 					<tr class="modal-table-row">
 						<th class="modal-table-row-item modal-table-head">Account created</th>
 						<td class="modal-table-row-item"
-							>{userData?.createdAt !== undefined ? formatDate(userData?.createdAt) : ""}</td
+							>{userData?.createdAt !== undefined ? formatDateLong(userData?.createdAt) : ""}</td
 						>
 					</tr>
 					<tr class="modal-table-row">
 						<th class="modal-table-row-item modal-table-head">Password updated</th>
 						<td class="modal-table-row-item"
-							>{userData?.createdAt !== undefined ? formatDate(userData?.updatedAt) : ""}</td
+							>{userData?.createdAt !== undefined ? formatDateLong(userData?.updatedAt) : ""}</td
 						>
 					</tr>
 					{#if userData?.isAdmin}

web/src/lib/components/Sidebar.svelte

@@ -13,7 +13,7 @@
 	import AdminWrench from "$lib/icons/sidebar/AdminShield.svelte"
 	import Exit from "$lib/icons/sidebar/Exit.svelte"
 	import ThemeToggle from "./ThemeToggle.svelte"
-	import { formatDate } from "$lib/util/contentVisual"
+	import { formatDateLong, formatDateShort, parseExpirationPrefix } from "$lib/util/contentVisual"
 	import type { FullNote, NoteMetadata } from "$lib/logic/model"
 
 	// props
@@ -172,7 +172,7 @@
 						>
 							<div class="flex w-full items-start justify-between">
 								<h3 class="sidebar-list-item-title">
-									{note.title || "Untitled Note"}
+									{parseExpirationPrefix(note.title)[0] || "Untitled Note"}
 								</h3>
 
 								<!-- Delete button -->
@@ -186,7 +186,11 @@
 							</div>
 
 							<p class="sidebar-list-item-metadata">
-								{formatDate(note.updatedAt)}
+								{formatDateLong(note.updatedAt)}
+							</p>
+
+							<p class="sidebar-list-item-metadata">
+								Expires {note.expiresAt !== null ? formatDateShort(note.expiresAt) : "never"}
 							</p>
 						</li>
 					{/each}

web/src/lib/logic/client.ts

@@ -15,10 +15,7 @@ import {
 } from "./model"
 
 const API_BASE_ADDR = import.meta.env.PROD ? "/api" : "http://localhost:8080/api"
-const UUID_REGEX = new RegExp(
+const UUID_REGEX = /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i
-	"^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$",
-	"i"
-)
 
 // lifetimes of *in-memory* authentication tokens in milliseconds
 const AT_EXP_MS = 15 * 60 * 1000 // 15 min.

web/src/lib/logic/model.ts

@@ -29,6 +29,7 @@ export interface ApiFullNoteResponse {
 	content: string
 	version_number: number
 	version_created_at: string
+	note_expires_at: string
 	note_created_at: string
 	note_updated_at: string
 }
@@ -41,6 +42,7 @@ export class FullNote {
 	versionNumber: number
 	versionCreatedAt: Date
 	isActiveVersion: boolean
+	noteExpiresAt: Date | null
 	noteCreatedAt: Date
 	noteUpdatedAt: Date
 
@@ -52,6 +54,8 @@ export class FullNote {
 		this.versionNumber = apiResponse.version_number
 		this.versionCreatedAt = new Date(apiResponse.version_created_at)
 		this.isActiveVersion = true // this endpoint serves only the latest version
+		this.noteExpiresAt =
+			apiResponse.note_expires_at !== null ? new Date(apiResponse.note_expires_at) : null
 		this.noteCreatedAt = new Date(apiResponse.note_created_at)
 		this.noteUpdatedAt = new Date(apiResponse.note_updated_at)
 	}
@@ -64,6 +68,7 @@ export class FullNote {
 			content: apiResponse.content,
 			version_number: apiResponse.version_number,
 			version_created_at: apiResponse.created_at,
+			note_expires_at: this.noteExpiresAt ? this.noteExpiresAt.toISOString() : "",
 			note_created_at: this.noteCreatedAt.toISOString(),
 			note_updated_at: this.noteUpdatedAt.toISOString()
 		})
@@ -79,6 +84,7 @@ export interface ApiNoteMetadataResponse {
 	note_id: string
 	owner_id: string
 	title: string
+	expires_at: string
 	updated_at: string
 }
 
@@ -86,12 +92,14 @@ export class NoteMetadata {
 	id: string
 	owner: string
 	title: string
+	expiresAt: Date | null
 	updatedAt: Date
 
 	constructor(apiResponse: ApiNoteMetadataResponse) {
 		this.id = apiResponse.note_id
 		this.owner = apiResponse.owner_id
 		this.title = apiResponse.title
+		this.expiresAt = apiResponse.expires_at !== null ? new Date(apiResponse.expires_at) : null
 		this.updatedAt = new Date(apiResponse.updated_at)
 	}
 

web/src/lib/util/authValidation.ts

@@ -1,6 +1,6 @@
 const MIN_USERNAME_LENGTH = 3
 const MAX_USERNAME_LENGTH = 20
-const USERNAME_REGEX = RegExp("^[a-z0-9_]+$")
+const USERNAME_REGEX = /^[a-z0-9_]+$/
 
 const MIN_PASSWORD_LENGTH = 12
 const MAX_PASSWORD_LENGTH = 72

web/src/lib/util/contentVisual.ts

@@ -1,4 +1,7 @@
-export const formatDate = (dateString: string | Date): string => {
+// Format: '@exp:2025-06-15' or '@exp:+7d' (or '@expires')
+const EXPIRATION_DATE_REGEX = /^(@(?:exp|expires):(?:(?:\d{4}-\d{2}-\d{2})|(?:\+\d+[dwmy])))\s*(.*)/
+
+export const formatDateLong = (dateString: string | Date): string => {
 	if (!dateString) {
 		return ""
 	}
@@ -13,3 +16,37 @@ export const formatDate = (dateString: string | Date): string => {
 		minute: "numeric"
 	})
 }
+
+export const formatDateShort = (dateString: string | Date): string => {
+	if (!dateString) {
+		return ""
+	}
+
+	const d = new Date(dateString)
+	return d.toLocaleDateString(undefined, {
+		weekday: "short",
+		year: "2-digit",
+		month: "short"
+	})
+}
+
+export const parseExpirationPrefix = (title: string): [string, string] => {
+	const match = title.match(EXPIRATION_DATE_REGEX)
+
+	if (match && match[1]) {
+		console.log(`[UTIL] Extracted expiration prefix: '${match[1]}'`)
+		// return [clean title, expiration prefix]
+		return [match[2], match[1]]
+	}
+
+	return [title, ""]
+}
+
+export const formatTitleWithHighlight = (title: string): string => {
+	const [cleanTitle, expirationPrefix] = parseExpirationPrefix(title)
+	if (expirationPrefix === "") {
+		return title
+	}
+
+	return `<span class="note-title-exp-highlight">${expirationPrefix}</span> ${cleanTitle}`
+}