Revamp new chat screen for chat UI

backend/danswer/server/query_and_chat/chat_backend.py

@@ -67,7 +67,7 @@ def get_user_chat_sessions(
 
 
 @router.get("/get-chat-session/{session_id}")
-def get_chat_session_messages(
+def get_chat_session(
     session_id: int,
     user: User | None = Depends(current_user),
     db_session: Session = Depends(get_session),
@@ -88,6 +88,7 @@ def get_chat_session_messages(
     return ChatSessionDetailResponse(
         chat_session_id=session_id,
         description=chat_session.description,
+        persona_id=chat_session.persona_id,
         messages=[
             translate_db_message_to_chat_message_detail(msg) for msg in session_messages
         ],

backend/danswer/server/query_and_chat/models.py

@@ -145,6 +145,7 @@ class ChatMessageDetail(BaseModel):
 class ChatSessionDetailResponse(BaseModel):
     chat_session_id: int
     description: str
+    persona_id: int
     messages: list[ChatMessageDetail]
 
 

web/src/app/chat/Chat.tsx

@@ -39,6 +39,7 @@ import { SelectedDocuments } from "./modifiers/SelectedDocuments";
 import { usePopup } from "@/components/admin/connectors/Popup";
 import { ResizableSection } from "@/components/resizable/ResizableSection";
 import { DanswerInitializingLoader } from "@/components/DanswerInitializingLoader";
+import { ChatIntro } from "./ChatIntro";
 
 const MAX_INPUT_HEIGHT = 200;
 
@@ -48,6 +49,7 @@ export const Chat = ({
   availableSources,
   availableDocumentSets,
   availablePersonas,
+  defaultSelectedPersonaId,
   documentSidebarInitialWidth,
   shouldhideBeforeScroll,
 }: {
@@ -56,6 +58,7 @@ export const Chat = ({
   availableSources: ValidSources[];
   availableDocumentSets: DocumentSet[];
   availablePersonas: Persona[];
+  defaultSelectedPersonaId?: number; // what persona to default to
   documentSidebarInitialWidth?: number;
   shouldhideBeforeScroll?: boolean;
 }) => {
@@ -76,6 +79,15 @@ export const Chat = ({
     async function initialSessionFetch() {
       if (existingChatSessionId === null) {
         setIsFetchingChatMessages(false);
+        if (defaultSelectedPersonaId !== undefined) {
+          setSelectedPersona(
+            availablePersonas.find(
+              (persona) => persona.id === defaultSelectedPersonaId
+            )
+          );
+        } else {
+          setSelectedPersona(undefined);
+        }
         setMessageHistory([]);
         return;
       }
@@ -85,6 +97,11 @@ export const Chat = ({
         `/api/chat/get-chat-session/${existingChatSessionId}`
       );
       const chatSession = (await response.json()) as BackendChatSession;
+      setSelectedPersona(
+        availablePersonas.find(
+          (persona) => persona.id === chatSession.persona_id
+        )
+      );
       const newMessageHistory = processRawChatHistory(chatSession.messages);
       setMessageHistory(newMessageHistory);
 
@@ -126,8 +143,23 @@ export const Chat = ({
       ? availablePersonas.find(
           (persona) => persona.id === existingChatSessionPersonaId
         )
-      : availablePersonas[0]
+      : defaultSelectedPersonaId !== undefined
+      ? availablePersonas.find(
+          (persona) => persona.id === defaultSelectedPersonaId
+        )
+      : undefined
   );
+  const livePersona = selectedPersona || availablePersonas[0];
+
+  useEffect(() => {
+    if (messageHistory.length === 0) {
+      setSelectedPersona(
+        availablePersonas.find(
+          (persona) => persona.id === defaultSelectedPersonaId
+        )
+      );
+    }
+  }, [defaultSelectedPersonaId]);
 
   const filterManager = useFilters();
 
@@ -212,7 +244,7 @@ export const Chat = ({
     let currChatSessionId: number;
     let isNewSession = chatSessionId === null;
     if (isNewSession) {
-      currChatSessionId = await createChatSession(selectedPersona?.id || 0);
+      currChatSessionId = await createChatSession(livePersona?.id || 0);
     } else {
       currChatSessionId = chatSessionId as number;
     }
@@ -405,15 +437,16 @@ export const Chat = ({
               className="w-full h-screen flex flex-col overflow-y-auto relative"
               ref={scrollableDivRef}
             >
-              {selectedPersona && (
+              {livePersona && (
                 <div className="sticky top-0 left-80 z-10 w-full bg-background/90">
                   <div className="ml-2 p-1 rounded mt-2 w-fit">
                     <ChatPersonaSelector
                       personas={availablePersonas}
-                      selectedPersonaId={selectedPersona?.id}
+                      selectedPersonaId={livePersona.id}
                       onPersonaChange={(persona) => {
                         if (persona) {
                           setSelectedPersona(persona);
+                          router.push(`/chat?personaId=${persona.id}`);
                         }
                       }}
                     />
@@ -424,23 +457,15 @@ export const Chat = ({
               {messageHistory.length === 0 &&
                 !isFetchingChatMessages &&
                 !isStreaming && (
-                  <div className="flex justify-center items-center h-full">
-                    <div className="px-8 w-searchbar-xs 2xl:w-searchbar-sm 3xl:w-searchbar">
-                      <div className="flex">
-                        <div className="mx-auto h-[80px] w-[80px]">
-                          <Image
-                            src="/logo.png"
-                            alt="Logo"
-                            width="1419"
-                            height="1520"
-                          />
-                        </div>
-                      </div>
-                      <div className="mx-auto text-2xl font-bold text-strong p-4 w-fit">
-                        What are you looking for today?
-                      </div>
-                    </div>
-                  </div>
+                  <ChatIntro
+                    availableSources={availableSources}
+                    availablePersonas={availablePersonas}
+                    selectedPersona={selectedPersona}
+                    handlePersonaSelect={(persona) => {
+                      setSelectedPersona(persona);
+                      router.push(`/chat?personaId=${persona.id}`);
+                    }}
+                  />
                 )}
 
               <div

web/src/app/chat/ChatIntro.tsx

@@ -0,0 +1,230 @@
+import { listSourceMetadata } from "@/lib/sources";
+import { ValidSources } from "@/lib/types";
+import Image from "next/image";
+import { Persona } from "../admin/personas/interfaces";
+import { Divider } from "@tremor/react";
+import { FiBookmark, FiCpu, FiInfo, FiX, FiZoomIn } from "react-icons/fi";
+import { HoverPopup } from "@/components/HoverPopup";
+import { Modal } from "@/components/Modal";
+import { useState } from "react";
+import { FaRobot } from "react-icons/fa";
+
+const MAX_PERSONAS_TO_DISPLAY = 4;
+
+function HelperItemDisplay({
+  title,
+  description,
+}: {
+  title: string;
+  description: string;
+}) {
+  return (
+    <div className="cursor-default hover:bg-hover-light border border-border rounded py-2 px-4">
+      <div className="text-emphasis font-bold text-lg flex">{title}</div>
+      <div className="text-sm">{description}</div>
+    </div>
+  );
+}
+
+function AllPersonaOptionDisplay({
+  availablePersonas,
+  handlePersonaSelect,
+  handleClose,
+}: {
+  availablePersonas: Persona[];
+  handlePersonaSelect: (persona: Persona) => void;
+  handleClose: () => void;
+}) {
+  return (
+    <Modal onOutsideClick={handleClose}>
+      <div className="px-8 py-12">
+        <div className="flex w-full border-b border-border mb-4 pb-4">
+          <h2 className="text-xl text-strong font-bold flex">
+            <div className="p-1 bg-ai rounded-lg h-fit my-auto mr-2">
+              <div className="text-inverted">
+                <FiCpu size={16} className="my-auto mx-auto" />
+              </div>
+            </div>
+            All Available Assistants
+          </h2>
+
+          <div
+            onClick={handleClose}
+            className="ml-auto p-1 rounded hover:bg-hover"
+          >
+            <FiX size={18} />
+          </div>
+        </div>
+        <div className="flex flex-col gap-y-4 max-h-96 overflow-y-auto pb-4 px-2">
+          {availablePersonas.map((persona) => (
+            <div
+              key={persona.id}
+              onClick={() => {
+                handleClose();
+                handlePersonaSelect(persona);
+              }}
+            >
+              <HelperItemDisplay
+                title={persona.name}
+                description={persona.description}
+              />
+            </div>
+          ))}
+        </div>
+      </div>
+    </Modal>
+  );
+}
+
+export function ChatIntro({
+  availableSources,
+  availablePersonas,
+  selectedPersona,
+  handlePersonaSelect,
+}: {
+  availableSources: ValidSources[];
+  availablePersonas: Persona[];
+  selectedPersona?: Persona;
+  handlePersonaSelect: (persona: Persona) => void;
+}) {
+  const [isAllPersonaOptionVisible, setIsAllPersonaOptionVisible] =
+    useState(false);
+
+  const allSources = listSourceMetadata();
+  const availableSourceMetadata = allSources.filter((source) =>
+    availableSources.includes(source.internalName)
+  );
+
+  return (
+    <>
+      {isAllPersonaOptionVisible && (
+        <AllPersonaOptionDisplay
+          handleClose={() => setIsAllPersonaOptionVisible(false)}
+          availablePersonas={availablePersonas}
+          handlePersonaSelect={handlePersonaSelect}
+        />
+      )}
+      <div className="flex justify-center items-center h-full">
+        {selectedPersona ? (
+          <div className="w-message-xs 2xl:w-message-sm 3xl:w-message">
+            <div className="flex">
+              <div className="mx-auto">
+                <div className="m-auto h-[80px] w-[80px]">
+                  <Image
+                    src="/logo.png"
+                    alt="Logo"
+                    width="1419"
+                    height="1520"
+                  />
+                </div>
+                <div className="m-auto text-3xl font-bold text-strong mt-4 w-fit">
+                  {selectedPersona?.name || "How can I help you today?"}
+                </div>
+                {selectedPersona && (
+                  <div className="mt-1">{selectedPersona.description}</div>
+                )}
+              </div>
+            </div>
+
+            <Divider />
+            <div>
+              {selectedPersona && selectedPersona.document_sets.length > 0 && (
+                <div className="mt-2">
+                  <p className="font-bold mb-1 mt-4 text-emphasis">
+                    Knowledge Sets:{" "}
+                  </p>
+                  {selectedPersona.document_sets.map((documentSet) => (
+                    <div key={documentSet.id} className="w-fit">
+                      <HoverPopup
+                        mainContent={
+                          <span className="flex w-fit p-1 rounded border border-border text-xs font-medium cursor-default">
+                            <div className="mr-1 my-auto">
+                              <FiBookmark />
+                            </div>
+                            {documentSet.name}
+                          </span>
+                        }
+                        popupContent={
+                          <div className="flex py-1 w-96">
+                            <FiInfo className="my-auto mr-2" />
+                            <div className="text-sm">
+                              {documentSet.description}
+                            </div>
+                          </div>
+                        }
+                        direction="top"
+                      />
+                    </div>
+                  ))}
+                </div>
+              )}
+              {availableSources.length > 0 && (
+                <div className="mt-2">
+                  <p className="font-bold mb-1 mt-4 text-emphasis">
+                    Connected Sources:{" "}
+                  </p>
+                  <div className="flex flex-wrap gap-x-2">
+                    {availableSourceMetadata.map((sourceMetadata) => (
+                      <span
+                        key={sourceMetadata.internalName}
+                        className="flex w-fit p-1 rounded border border-border text-xs font-medium cursor-default"
+                      >
+                        <div className="mr-1 my-auto">
+                          {sourceMetadata.icon({})}
+                        </div>
+                        {sourceMetadata.displayName}
+                      </span>
+                    ))}
+                  </div>
+                </div>
+              )}
+            </div>
+          </div>
+        ) : (
+          <div className="px-12 w-searchbar-xs 2xl:w-searchbar-sm 3xl:w-searchbar">
+            <div className="mx-auto">
+              <div className="m-auto h-[80px] w-[80px]">
+                <Image src="/logo.png" alt="Logo" width="1419" height="1520" />
+              </div>
+            </div>
+
+            <div className="mt-2">
+              <p className="font-bold text-xl mb-1 mt-4 text-emphasis text-center">
+                Which assistant do you want to chat with today?{" "}
+              </p>
+              <p className="text-sm text-center">
+                Or ask a question immediately to use the{" "}
+                <b>{availablePersonas[0].name}</b> assistant.
+              </p>
+              <div className="flex flex-col gap-y-4 mt-8">
+                {availablePersonas
+                  .slice(0, MAX_PERSONAS_TO_DISPLAY)
+                  .map((persona) => (
+                    <div
+                      key={persona.id}
+                      onClick={() => handlePersonaSelect(persona)}
+                    >
+                      <HelperItemDisplay
+                        title={persona.name}
+                        description={persona.description}
+                      />
+                    </div>
+                  ))}
+              </div>
+              {availablePersonas.length > MAX_PERSONAS_TO_DISPLAY && (
+                <div className="mt-4 flex">
+                  <div
+                    onClick={() => setIsAllPersonaOptionVisible(true)}
+                    className="text-sm flex mx-auto p-1 hover:bg-hover-light rounded cursor-default"
+                  >
+                    <FiZoomIn className="my-auto mr-1" /> See more
+                  </div>
+                </div>
+              )}
+            </div>
+          </div>
+        )}
+      </div>
+    </>
+  );
+}

web/src/app/chat/ChatPage.tsx

@@ -13,6 +13,7 @@ export function ChatLayout({
   availableSources,
   availableDocumentSets,
   availablePersonas,
+  defaultSelectedPersonaId,
   documentSidebarInitialWidth,
 }: {
   user: User | null;
@@ -20,12 +21,17 @@ export function ChatLayout({
   availableSources: ValidSources[];
   availableDocumentSets: DocumentSet[];
   availablePersonas: Persona[];
+  defaultSelectedPersonaId?: number; // what persona to default to
   documentSidebarInitialWidth?: number;
 }) {
   const searchParams = useSearchParams();
   const chatIdRaw = searchParams.get("chatId");
   const chatId = chatIdRaw ? parseInt(chatIdRaw) : null;
 
+  const selectedChatSession = chatSessions.find(
+    (chatSession) => chatSession.id === chatId
+  );
+
   return (
     <>
       <div className="flex relative bg-background text-default h-screen overflow-x-hidden">
@@ -37,10 +43,11 @@ export function ChatLayout({
 
         <Chat
           existingChatSessionId={chatId}
-          existingChatSessionPersonaId={0}
+          existingChatSessionPersonaId={selectedChatSession?.persona_id}
           availableSources={availableSources}
           availableDocumentSets={availableDocumentSets}
           availablePersonas={availablePersonas}
+          defaultSelectedPersonaId={defaultSelectedPersonaId}
           documentSidebarInitialWidth={documentSidebarInitialWidth}
         />
       </div>

web/src/app/chat/ChatPersonaSelector.tsx

@@ -1,6 +1,5 @@
 import { Persona } from "@/app/admin/personas/interfaces";
 import { FiCheck, FiChevronDown } from "react-icons/fi";
-import { FaRobot } from "react-icons/fa";
 import { CustomDropdown } from "@/components/Dropdown";
 
 function PersonaItem({

web/src/app/chat/interfaces.ts

@@ -33,6 +33,9 @@ export interface Message {
 }
 
 export interface BackendChatSession {
+  chat_session_id: number;
+  description: string;
+  persona_id: number;
   messages: BackendMessage[];
 }
 

web/src/app/chat/page.tsx

@@ -22,7 +22,11 @@ import { DOCUMENT_SIDEBAR_WIDTH_COOKIE_NAME } from "@/components/resizable/conta
 import { personaComparator } from "../admin/personas/lib";
 import { ChatLayout } from "./ChatPage";
 
-export default async function Page() {
+export default async function Page({
+  searchParams,
+}: {
+  searchParams: { [key: string]: string };
+}) {
   noStore();
 
   const tasks = [
@@ -110,6 +114,11 @@ export default async function Page() {
   // sort them in priority order
   personas.sort(personaComparator);
 
+  const defaultPersonaIdRaw = searchParams["personaId"];
+  const defaultPersonaId = defaultPersonaIdRaw
+    ? parseInt(defaultPersonaIdRaw)
+    : undefined;
+
   const documentSidebarCookieInitialWidth = cookies().get(
     DOCUMENT_SIDEBAR_WIDTH_COOKIE_NAME
   );
@@ -130,6 +139,7 @@ export default async function Page() {
         availableSources={availableSources}
         availableDocumentSets={documentSets}
         availablePersonas={personas}
+        defaultSelectedPersonaId={defaultPersonaId}
         documentSidebarInitialWidth={finalDocumentSidebarInitialWidth}
       />
     </>

web/src/components/Modal.tsx

@@ -22,8 +22,8 @@ export function Modal({
       >
         <div
           className={`
-          bg-background rounded-sm shadow-lg
-          shadow-lg relative w-1/2 text-sm
+          bg-background rounded shadow-lg
+          relative w-1/2 text-sm
           ${className}
         `}
           onClick={(event) => event.stopPropagation()}