add api assistants endpoints (#951)

* add api assistants endpoints

* lint

---------

Co-authored-by: Kevin CATHALY <alakme@kevins-macbook-pro.home>
Co-authored-by: Nathan Sarrazin <sarrazin.nathan@gmail.com>

src/routes/api/assistants/+server.ts

@@ -0,0 +1,50 @@
+import { collections } from "$lib/server/database.js";
+import type { Assistant } from "$lib/types/Assistant";
+import type { User } from "$lib/types/User";
+import { generateQueryTokens } from "$lib/utils/searchTokens.js";
+import type { Filter } from "mongodb";
+
+const NUM_PER_PAGE = 24;
+
+export async function GET({ url, locals }) {
+	const modelId = url.searchParams.get("modelId");
+	const pageIndex = parseInt(url.searchParams.get("p") ?? "0");
+	const username = url.searchParams.get("user");
+	const query = url.searchParams.get("q")?.trim() ?? null;
+	const createdByCurrentUser = locals.user?.username && locals.user.username === username;
+
+	let user: Pick<User, "_id"> | null = null;
+	if (username) {
+		user = await collections.users.findOne<Pick<User, "_id">>(
+			{ username },
+			{ projection: { _id: 1 } }
+		);
+		if (!user) {
+			return Response.json({ message: `User "${username}" doesn't exist` }, { status: 404 });
+		}
+	}
+
+	// fetch the top assistants sorted by user count from biggest to smallest, filter out all assistants with only 1 users. filter by model too if modelId is provided
+	const filter: Filter<Assistant> = {
+		...(modelId && { modelId }),
+		...(!createdByCurrentUser && { userCount: { $gt: 1 } }),
+		...(user ? { createdById: user._id } : { featured: true }),
+		...(query && { searchTokens: { $all: generateQueryTokens(query) } }),
+	};
+	const assistants = await collections.assistants
+		.find(filter)
+		.skip(NUM_PER_PAGE * pageIndex)
+		.sort({ userCount: -1 })
+		.limit(NUM_PER_PAGE)
+		.toArray();
+
+	const numTotalItems = await collections.assistants.countDocuments(filter);
+
+	return Response.json({
+		assistants,
+		selectedModel: modelId ?? "",
+		numTotalItems,
+		numItemsPerPage: NUM_PER_PAGE,
+		query,
+	});
+}

src/routes/api/user/assistants/+server.ts

@@ -0,0 +1,43 @@
+import { authCondition } from "$lib/server/auth";
+import type { Conversation } from "$lib/types/Conversation";
+import { collections } from "$lib/server/database";
+import { ObjectId } from "mongodb";
+
+export async function GET({ locals }) {
+	if (locals.user?._id || locals.sessionId) {
+		const settings = await collections.settings.findOne(authCondition(locals));
+
+		const conversations = await collections.conversations
+			.find(authCondition(locals))
+			.sort({ updatedAt: -1 })
+			.project<Pick<Conversation, "assistantId">>({
+				assistantId: 1,
+			})
+			.limit(300)
+			.toArray();
+
+		const userAssistants = settings?.assistants?.map((assistantId) => assistantId.toString()) ?? [];
+		const userAssistantsSet = new Set(userAssistants);
+
+		const assistantIds = [
+			...userAssistants.map((el) => new ObjectId(el)),
+			...(conversations.map((conv) => conv.assistantId).filter((el) => !!el) as ObjectId[]),
+		];
+
+		const assistants = await collections.assistants.find({ _id: { $in: assistantIds } }).toArray();
+
+		const res = assistants
+			.filter((el) => userAssistantsSet.has(el._id.toString()))
+			.map((el) => ({
+				...el,
+				_id: el._id.toString(),
+				createdById: undefined,
+				createdByMe:
+					el.createdById.toString() === (locals.user?._id ?? locals.sessionId).toString(),
+			}));
+
+		return Response.json(res);
+	} else {
+		return Response.json({ message: "Must have session cookie" }, { status: 401 });
+	}
+}