shareable chats (#23)

README.md

@@ -62,7 +62,7 @@ TODO: add instructions
 - [ ] Chat branching
 - [ ] Regenerate message
 - ~[ ] Image generation~
-- [ ] Chat sharing
+- [x] Chat sharing
 - [ ] 404 page/redirect
 - ~[ ] Test link with free credits~
 - [x] Cursor-like Rules (@ieedan's idea!)

src/lib/backend/convex/conversations.ts

@@ -53,7 +53,7 @@ export const getById = query({
 
 		const conversation = await ctx.db.get(args.conversation_id);
 
-		if (!conversation || conversation.user_id !== session.userId) {
+		if (!conversation || (conversation.user_id !== session.userId && !conversation.public)) {
 			throw new Error('Conversation not found or unauthorized');
 		}
 
@@ -80,6 +80,7 @@ export const create = mutation({
 			user_id: session.userId as any,
 			updated_at: Date.now(),
 			generating: true,
+			public: false,
 		});
 
 		return res;
@@ -124,6 +125,7 @@ export const createAndAddMessage = mutation({
 			user_id: session.userId as any,
 			updated_at: Date.now(),
 			generating: true,
+			public: false,
 		});
 
 		const messageId = await ctx.runMutation(api.messages.create, {
@@ -210,9 +212,7 @@ export const updateCostUsd = mutation({
 			session_token: args.session_token,
 		});
 
-		if (!session) {
+		if (!session) throw new Error('Unauthorized');
-			throw new Error('Unauthorized');
-		}
 
 		// Verify the conversation belongs to the user
 		const conversation = await ctx.db.get(args.conversation_id);
@@ -226,6 +226,29 @@ export const updateCostUsd = mutation({
 	},
 });
 
+export const makePublic = mutation({
+	args: {
+		conversation_id: v.id('conversations'),
+		session_token: v.string(),
+	},
+	handler: async (ctx, args) => {
+		const session = await ctx.runQuery(api.betterAuth.publicGetSession, {
+			session_token: args.session_token,
+		});
+
+		if (!session) throw new Error('Unauthorized');
+
+		const conversation = await ctx.db.get(args.conversation_id);
+		if (!conversation || conversation.user_id !== session.userId) {
+			throw new Error('Conversation not found or unauthorized');
+		}
+
+		await ctx.db.patch(args.conversation_id, {
+			public: true,
+		});
+	},
+});
+
 export const togglePin = mutation({
 	args: {
 		conversation_id: v.id('conversations'),

src/lib/backend/convex/schema.ts

@@ -52,6 +52,7 @@ export default defineSchema({
 		pinned: v.optional(v.boolean()),
 		generating: v.optional(v.boolean()),
 		cost_usd: v.optional(v.number()),
+		public: v.boolean(),
 	}).index('by_user', ['user_id']),
 	messages: defineTable({
 		conversation_id: v.string(),

src/lib/components/ui/copy-button/copy-button.svelte

@@ -20,6 +20,7 @@
 		variant = 'ghost',
 		size = 'icon',
 		onCopy,
+		onclick,
 		class: className,
 		tabindex = -1,
 		children,
@@ -43,7 +44,9 @@
 	class={cn('flex items-center gap-2', className)}
 	type="button"
 	name="copy"
-	onclick={async () => {
+	onclick={async (e) => {
+		onclick?.(e);
+
 		const status = await clipboard.copy(text);
 
 		onCopy?.(status);

src/routes/chat/+layout.svelte

@@ -37,6 +37,13 @@
 	import ModelPicker from './model-picker.svelte';
 	import AppSidebar from '$lib/components/app-sidebar.svelte';
 	import { cn } from '$lib/utils/utils.js';
+	import ShareIcon from '~icons/lucide/share';
+	import { Result, ResultAsync } from 'neverthrow';
+	import { UseClipboard } from '$lib/hooks/use-clipboard.svelte.js';
+	import { scale } from 'svelte/transition';
+	import CheckIcon from '~icons/lucide/check';
+	import LockIcon from '~icons/lucide/lock';
+	import LockOpenIcon from '~icons/lucide/lock-open';
 
 	const client = useConvexClient();
 
@@ -330,6 +337,36 @@
 		}
 	}
 
+	const clipboard = new UseClipboard();
+
+	let sharingStatus = $derived(clipboard.status);
+
+	async function shareConversation() {
+		if (currentConversationQuery.data?.public) {
+			clipboard.copy(page.url.toString());
+			return;
+		}
+
+		if (!page.params.id || !session.current?.session.token) return;
+
+		const result = await ResultAsync.fromPromise(
+			client.mutation(api.conversations.makePublic, {
+				conversation_id: page.params.id as Id<'conversations'>,
+				session_token: session.current?.session.token ?? '',
+			}),
+			(e) => e
+		);
+
+		if (result.isErr()) {
+			sharingStatus = 'failure';
+			setTimeout(() => {
+				sharingStatus = undefined;
+			}, 1000);
+		}
+
+		clipboard.copy(page.url.toString());
+	}
+
 	const textareaSize = new ElementSize(() => textarea);
 
 	let textareaWrapper = $state<HTMLDivElement>();
@@ -368,8 +405,52 @@
 			{cmdOrCtrl} + B
 		</Tooltip>
 
+		<Tooltip>
+			{#snippet trigger(tooltip)}
+				<div
+					class="fixed top-3 left-10 z-50 flex size-9 items-center justify-center md:top-1 md:left-auto"
+					{...tooltip.trigger}
+				>
+					{#if currentConversationQuery.data?.public}
+						<LockOpenIcon class="size-4" />
+					{:else}
+						<LockIcon class="size-4" />
+					{/if}
+				</div>
+			{/snippet}
+			{currentConversationQuery.data?.public ? 'Public' : 'Private'}
+		</Tooltip>
+
 		<!-- header -->
 		<div class="md:bg-sidebar fixed top-2 right-2 z-50 flex rounded-bl-lg p-1 md:top-0 md:right-0">
+			{#if page.params.id}
+				<Tooltip>
+					{#snippet trigger(tooltip)}
+						<Button
+							onClickPromise={shareConversation}
+							variant="ghost"
+							size="icon"
+							class="bg-sidebar size-8"
+							{...tooltip.trigger}
+						>
+							{#if sharingStatus === 'success'}
+								<div in:scale={{ duration: 1000, start: 0.85 }}>
+									<CheckIcon tabindex={-1} />
+									<span class="sr-only">Copied</span>
+								</div>
+							{:else if sharingStatus === 'failure'}
+								<div in:scale={{ duration: 1000, start: 0.85 }}>
+									<XIcon tabindex={-1} />
+									<span class="sr-only">Failed to copy</span>
+								</div>
+							{:else}
+								<ShareIcon />
+							{/if}
+						</Button>
+					{/snippet}
+					Share
+				</Tooltip>
+			{/if}
 			<Tooltip>
 				{#snippet trigger(tooltip)}
 					<Button variant="ghost" size="icon" class="size-8" href="/account" {...tooltip.trigger}>