feat: add support for online status and read receipt preferences

- Added `showOnlineStatus` and `showReadReceipts` fields to settings form.
- Introduced real-time synchronization for read receipts in message threads.
- Enhanced avatars to display online status indicators.
- Automatically mark messages as read when viewing active conversations.

frontend/src/app/(dashboard)/messages/page.tsx

@@ -2,7 +2,15 @@
 
 import { formatDistanceToNow } from "date-fns";
 import { fr } from "date-fns/locale";
-import { ArrowLeft, Search, Send, UserPlus, X } from "lucide-react";
+import {
+	ArrowLeft,
+	Check,
+	CheckCheck,
+	Search,
+	Send,
+	UserPlus,
+	X,
+} from "lucide-react";
 import Link from "next/link";
 import { useRouter, useSearchParams } from "next/navigation";
 import * as React from "react";
@@ -142,6 +150,8 @@ export default function MessagesPage() {
 					if (activeConv?.id === data.conversationId) {
 						setMessages((prev) => [...prev, data.message]);
 						setIsOtherTyping(false); // S'il a envoyé un message, il ne tape plus
+						// Marquer comme lu immédiatement si on est sur la conversation
+						MessageService.markAsRead(data.conversationId).catch(console.error);
 					}
 					// Mettre à jour la liste des conversations
 					setConversations((prev) => {
@@ -184,10 +194,26 @@ export default function MessagesPage() {
 				}
 			});
 
+			socket.on(
+				"messages_read",
+				(data: { conversationId: string; readerId: string }) => {
+					if (activeConv?.id === data.conversationId) {
+						setMessages((prev) =>
+							prev.map((msg) =>
+								msg.senderId !== data.readerId && !msg.readAt
+									? { ...msg, readAt: new Date().toISOString() }
+									: msg,
+							),
+						);
+					}
+				},
+			);
+
 			return () => {
 				socket.off("new_message");
 				socket.off("user_status");
 				socket.off("user_typing");
+				socket.off("messages_read");
 			};
 		}
 	}, [socket, activeConv]);
@@ -351,7 +377,7 @@ export default function MessagesPage() {
 											: "hover:bg-zinc-100 dark:hover:bg-zinc-900"
 									}`}
 								>
-									<Avatar>
+									<Avatar isOnline={onlineUsers.has(conv.recipient.uuid)}>
 										<AvatarImage src={conv.recipient.avatarUrl} />
 										<AvatarFallback>
 											{conv.recipient.username[0].toUpperCase()}
@@ -403,7 +429,10 @@ export default function MessagesPage() {
 								href={`/user/${activeConv.recipient.username}`}
 								className="flex-1 flex items-center gap-3 hover:opacity-80 transition-opacity"
 							>
-								<Avatar className="h-8 w-8">
+								<Avatar
+									className="h-8 w-8"
+									isOnline={onlineUsers.has(activeConv.recipient.uuid)}
+								>
 									<AvatarImage src={activeConv.recipient.avatarUrl} />
 									<AvatarFallback>
 										{activeConv.recipient.username[0].toUpperCase()}
@@ -465,8 +494,12 @@ export default function MessagesPage() {
 														})}
 													</span>
 													{msg.senderId === user?.uuid && (
-														<span className="font-bold">
+														<span className="flex items-center">
-															{msg.readAt ? "• Lu" : "• Envoyé"}
+															{msg.readAt ? (
+																<CheckCheck className="h-3 w-3" />
+															) : (
+																<Check className="h-3 w-3" />
+															)}
 														</span>
 													)}
 												</div>

frontend/src/app/(dashboard)/settings/page.tsx

@@ -10,6 +10,7 @@ import {
 	Palette,
 	Save,
 	Settings,
+	Shield,
 	Sun,
 	Trash2,
 	User as UserIcon,
@@ -53,6 +54,7 @@ import { Input } from "@/components/ui/input";
 import { Label } from "@/components/ui/label";
 import { RadioGroup, RadioGroupItem } from "@/components/ui/radio-group";
 import { Spinner } from "@/components/ui/spinner";
+import { Switch } from "@/components/ui/switch";
 import { Textarea } from "@/components/ui/textarea";
 import { useAuth } from "@/providers/auth-provider";
 import { UserService } from "@/services/user.service";
@@ -60,6 +62,8 @@ import { UserService } from "@/services/user.service";
 const settingsSchema = z.object({
 	displayName: z.string().max(32, "Le nom d'affichage est trop long").optional(),
 	bio: z.string().max(255, "La bio est trop longue").optional(),
+	showOnlineStatus: z.boolean(),
+	showReadReceipts: z.boolean(),
 });
 
 type SettingsFormValues = z.infer<typeof settingsSchema>;
@@ -82,6 +86,8 @@ export default function SettingsPage() {
 		defaultValues: {
 			displayName: "",
 			bio: "",
+			showOnlineStatus: true,
+			showReadReceipts: true,
 		},
 	});
 
@@ -90,6 +96,8 @@ export default function SettingsPage() {
 			form.reset({
 				displayName: user.displayName || "",
 				bio: user.bio || "",
+				showOnlineStatus: user.showOnlineStatus ?? true,
+				showReadReceipts: user.showReadReceipts ?? true,
 			});
 		}
 	}, [user, form]);
@@ -265,6 +273,73 @@ export default function SettingsPage() {
 					</CardContent>
 				</Card>
 
+				{/* Confidentialité */}
+				<Card className="border-none shadow-sm">
+					<CardHeader className="pb-4">
+						<div className="flex items-center gap-2">
+							<Shield className="h-5 w-5 text-primary" />
+							<div>
+								<CardTitle>Confidentialité</CardTitle>
+								<CardDescription>Gérez la visibilité de vos activités.</CardDescription>
+							</div>
+						</div>
+					</CardHeader>
+					<CardContent>
+						<Form {...form}>
+							<form onSubmit={form.handleSubmit(onSubmit)} className="space-y-6">
+								<div className="space-y-4">
+									<FormField
+										control={form.control}
+										name="showOnlineStatus"
+										render={({ field }) => (
+											<FormItem className="flex flex-row items-center justify-between rounded-lg border p-4">
+												<div className="space-y-0.5">
+													<FormLabel className="text-base">Statut en ligne</FormLabel>
+													<FormDescription>
+														Affiche quand vous êtes actif sur le site.
+													</FormDescription>
+												</div>
+												<FormControl>
+													<Switch checked={field.value} onCheckedChange={field.onChange} />
+												</FormControl>
+											</FormItem>
+										)}
+									/>
+									<FormField
+										control={form.control}
+										name="showReadReceipts"
+										render={({ field }) => (
+											<FormItem className="flex flex-row items-center justify-between rounded-lg border p-4">
+												<div className="space-y-0.5">
+													<FormLabel className="text-base">
+														Confirmations de lecture
+													</FormLabel>
+													<FormDescription>
+														Permet aux autres de voir quand vous avez lu leurs messages.
+													</FormDescription>
+												</div>
+												<FormControl>
+													<Switch checked={field.value} onCheckedChange={field.onChange} />
+												</FormControl>
+											</FormItem>
+										)}
+									/>
+								</div>
+								<div className="flex justify-end pt-2">
+									<Button type="submit" disabled={isSaving} className="min-w-[150px]">
+										{isSaving ? (
+											<Loader2 className="mr-2 h-4 w-4 animate-spin" />
+										) : (
+											<Save className="mr-2 h-4 w-4" />
+										)}
+										Enregistrer
+									</Button>
+								</div>
+							</form>
+						</Form>
+					</CardContent>
+				</Card>
+
 				<TwoFactorSetup />
 
 				<Card className="border-none shadow-sm">

frontend/src/components/ui/avatar.tsx

@@ -7,17 +7,23 @@ import { cn } from "@/lib/utils";
 
 function Avatar({
 	className,
+	isOnline,
 	...props
-}: React.ComponentProps<typeof AvatarPrimitive.Root>) {
+}: React.ComponentProps<typeof AvatarPrimitive.Root> & { isOnline?: boolean }) {
 	return (
-		<AvatarPrimitive.Root
+		<div className="relative inline-block">
-			data-slot="avatar"
+			<AvatarPrimitive.Root
-			className={cn(
+				data-slot="avatar"
-				"relative flex size-8 shrink-0 overflow-hidden rounded-full",
+				className={cn(
-				className,
+					"relative flex size-8 shrink-0 overflow-hidden rounded-full",
+					className,
+				)}
+				{...props}
+			/>
+			{isOnline && (
+				<span className="absolute bottom-0 right-0 block h-2.5 w-2.5 rounded-full bg-green-500 ring-2 ring-white dark:ring-zinc-900" />
 			)}
-			{...props}
+		</div>
-		/>
 	);
 }