500 lines
16 KiB
TypeScript
500 lines
16 KiB
TypeScript
"use client";
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import { useChat } from "@/contexts/chat-context";
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import { cn } from "@/lib/utils";
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import {
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FileText,
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Library,
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MessageSquare,
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Plus,
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Settings2,
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} from "lucide-react";
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import Link from "next/link";
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import { usePathname } from "next/navigation";
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import { useCallback, useEffect, useRef, useState } from "react";
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import { EndpointType } from "@/contexts/chat-context";
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import { useLoadingStore } from "@/stores/loadingStore";
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import { KnowledgeFilterList } from "./knowledge-filter-list";
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import { useKnowledgeFilter } from "@/contexts/knowledge-filter-context";
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interface RawConversation {
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response_id: string;
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title: string;
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endpoint: string;
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messages: Array<{
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role: string;
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content: string;
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timestamp?: string;
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response_id?: string;
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}>;
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created_at?: string;
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last_activity?: string;
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previous_response_id?: string;
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total_messages: number;
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[key: string]: unknown;
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}
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interface ChatConversation {
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response_id: string;
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title: string;
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endpoint: EndpointType;
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messages: Array<{
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role: string;
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content: string;
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timestamp?: string;
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response_id?: string;
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}>;
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created_at?: string;
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last_activity?: string;
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previous_response_id?: string;
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total_messages: number;
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[key: string]: unknown;
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}
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export function Navigation() {
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const pathname = usePathname();
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const {
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endpoint,
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refreshTrigger,
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loadConversation,
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currentConversationId,
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setCurrentConversationId,
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startNewConversation,
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conversationDocs,
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addConversationDoc,
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refreshConversations,
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placeholderConversation,
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setPlaceholderConversation,
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} = useChat();
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const { loading } = useLoadingStore();
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const [conversations, setConversations] = useState<ChatConversation[]>([]);
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const [loadingConversations, setLoadingConversations] = useState(false);
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const [loadingNewConversation, setLoadingNewConversation] = useState(false);
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const [previousConversationCount, setPreviousConversationCount] = useState(0);
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const fileInputRef = useRef<HTMLInputElement>(null);
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const { selectedFilter, setSelectedFilter } = useKnowledgeFilter();
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const handleNewConversation = () => {
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setLoadingNewConversation(true);
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refreshConversations();
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startNewConversation();
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if (typeof window !== "undefined") {
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window.dispatchEvent(new CustomEvent("newConversation"));
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}
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// Clear loading state after a short delay to show the new conversation is created
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setTimeout(() => {
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setLoadingNewConversation(false);
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}, 300);
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};
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const handleFileUpload = async (file: File) => {
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console.log("Navigation file upload:", file.name);
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// Trigger loading start event for chat page
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window.dispatchEvent(
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new CustomEvent("fileUploadStart", {
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detail: { filename: file.name },
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})
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);
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try {
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const formData = new FormData();
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formData.append("file", file);
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formData.append("endpoint", endpoint);
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const response = await fetch("/api/upload_context", {
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method: "POST",
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body: formData,
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});
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if (!response.ok) {
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const errorText = await response.text();
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console.error("Upload failed:", errorText);
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// Trigger error event for chat page to handle
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window.dispatchEvent(
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new CustomEvent("fileUploadError", {
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detail: {
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filename: file.name,
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error: "Failed to process document",
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},
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})
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);
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// Trigger loading end event
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window.dispatchEvent(new CustomEvent("fileUploadComplete"));
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return;
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}
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const result = await response.json();
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console.log("Upload result:", result);
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// Add the file to conversation docs
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if (result.filename) {
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addConversationDoc(result.filename);
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}
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// Trigger file upload event for chat page to handle
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window.dispatchEvent(
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new CustomEvent("fileUploaded", {
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detail: { file, result },
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})
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);
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// Trigger loading end event
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window.dispatchEvent(new CustomEvent("fileUploadComplete"));
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} catch (error) {
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console.error("Upload failed:", error);
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// Trigger loading end event even on error
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window.dispatchEvent(new CustomEvent("fileUploadComplete"));
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// Trigger error event for chat page to handle
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window.dispatchEvent(
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new CustomEvent("fileUploadError", {
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detail: { filename: file.name, error: "Failed to process document" },
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})
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);
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}
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};
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const handleFilePickerClick = () => {
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fileInputRef.current?.click();
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};
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const handleFilePickerChange = (e: React.ChangeEvent<HTMLInputElement>) => {
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const files = e.target.files;
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if (files && files.length > 0) {
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handleFileUpload(files[0]);
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}
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// Reset the input so the same file can be selected again
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if (fileInputRef.current) {
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fileInputRef.current.value = "";
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}
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};
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const routes = [
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{
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label: "Chat",
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icon: MessageSquare,
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href: "/chat",
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active: pathname === "/" || pathname === "/chat",
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},
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{
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label: "Knowledge",
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icon: Library,
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href: "/knowledge",
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active: pathname === "/knowledge",
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},
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{
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label: "Settings",
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icon: Settings2,
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href: "/settings",
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active: pathname === "/settings",
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},
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];
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const isOnChatPage = pathname === "/" || pathname === "/chat";
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const isOnKnowledgePage = pathname.startsWith("/knowledge");
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const createDefaultPlaceholder = useCallback(() => {
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return {
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response_id: "new-conversation-" + Date.now(),
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title: "New conversation",
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endpoint: endpoint,
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messages: [
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{
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role: "assistant",
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content: "How can I assist?",
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timestamp: new Date().toISOString(),
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},
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],
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created_at: new Date().toISOString(),
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last_activity: new Date().toISOString(),
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total_messages: 1,
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} as ChatConversation;
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}, [endpoint]);
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const fetchConversations = useCallback(async () => {
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setLoadingConversations(true);
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try {
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// Fetch from the selected endpoint only
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const apiEndpoint =
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endpoint === "chat" ? "/api/chat/history" : "/api/langflow/history";
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const response = await fetch(apiEndpoint);
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if (response.ok) {
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const history = await response.json();
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const rawConversations = history.conversations || [];
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// Cast conversations to proper type and ensure endpoint is correct
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const conversations: ChatConversation[] = rawConversations.map(
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(conv: RawConversation) => ({
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...conv,
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endpoint: conv.endpoint as EndpointType,
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})
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);
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// Sort conversations by last activity (most recent first)
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conversations.sort((a: ChatConversation, b: ChatConversation) => {
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const aTime = new Date(
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a.last_activity || a.created_at || 0
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).getTime();
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const bTime = new Date(
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b.last_activity || b.created_at || 0
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).getTime();
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return bTime - aTime;
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});
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setConversations(conversations);
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// If no conversations exist and no placeholder is shown, create a default placeholder
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if (conversations.length === 0 && !placeholderConversation) {
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setPlaceholderConversation(createDefaultPlaceholder());
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}
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} else {
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setConversations([]);
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// Also create placeholder when request fails and no conversations exist
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if (!placeholderConversation) {
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setPlaceholderConversation(createDefaultPlaceholder());
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}
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}
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// Conversation documents are now managed in chat context
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} catch (error) {
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console.error(`Failed to fetch ${endpoint} conversations:`, error);
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setConversations([]);
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} finally {
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setLoadingConversations(false);
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}
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}, [
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endpoint,
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placeholderConversation,
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setPlaceholderConversation,
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createDefaultPlaceholder,
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]);
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// Fetch chat conversations when on chat page, endpoint changes, or refresh is triggered
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useEffect(() => {
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if (isOnChatPage) {
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fetchConversations();
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}
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}, [isOnChatPage, endpoint, refreshTrigger, fetchConversations]);
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// Clear placeholder when conversation count increases (new conversation was created)
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useEffect(() => {
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const currentCount = conversations.length;
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// If we had a placeholder and the conversation count increased, clear the placeholder and highlight the new conversation
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if (
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placeholderConversation &&
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currentCount > previousConversationCount &&
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conversations.length > 0
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) {
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setPlaceholderConversation(null);
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// Highlight the most recent conversation (first in sorted array) without loading its messages
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const newestConversation = conversations[0];
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if (newestConversation) {
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setCurrentConversationId(newestConversation.response_id);
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}
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}
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// Update the previous count
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setPreviousConversationCount(currentCount);
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}, [
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conversations.length,
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placeholderConversation,
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setPlaceholderConversation,
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previousConversationCount,
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conversations,
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setCurrentConversationId,
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]);
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return (
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<div className="flex flex-col h-full bg-background">
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<div className="px-3 py-2 flex-shrink-0">
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<div className="space-y-1">
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{routes.map((route) => (
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<div key={route.href}>
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<Link
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href={route.href}
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className={cn(
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"text-sm group flex p-3 w-full justify-start font-medium cursor-pointer hover:bg-accent hover:text-accent-foreground rounded-lg transition-all",
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route.active
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? "bg-accent text-accent-foreground shadow-sm"
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: "text-foreground hover:text-accent-foreground"
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)}
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>
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<div className="flex items-center flex-1">
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<route.icon
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className={cn(
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"h-4 w-4 mr-3 shrink-0",
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route.active
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? "text-accent-foreground"
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: "text-muted-foreground group-hover:text-foreground"
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)}
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/>
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{route.label}
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</div>
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</Link>
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{route.label === "Settings" && (
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<div className="mx-3 my-2 border-t border-border/40" />
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)}
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</div>
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))}
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</div>
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</div>
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{isOnKnowledgePage && (
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<KnowledgeFilterList
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selectedFilter={selectedFilter}
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onFilterSelect={setSelectedFilter}
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/>
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)}
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{/* Chat Page Specific Sections */}
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{isOnChatPage && (
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<div className="flex-1 min-h-0 flex flex-col">
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{/* Conversations Section */}
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<div className="px-3 flex-shrink-0">
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<div className="flex items-center justify-between mb-3">
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<h3 className="text-sm font-medium text-muted-foreground">
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Conversations
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</h3>
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<button
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className="p-1 hover:bg-accent rounded"
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onClick={handleNewConversation}
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title="Start new conversation"
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disabled={loading}
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>
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<Plus className="h-4 w-4 text-muted-foreground" />
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</button>
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</div>
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</div>
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<div className="px-3 flex-1 min-h-0 flex flex-col">
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{/* Conversations List - grows naturally, doesn't fill all space */}
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<div className="flex-shrink-0 overflow-y-auto scrollbar-hide space-y-1 max-h-full">
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{loadingNewConversation ? (
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<div className="text-sm text-muted-foreground p-2">
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Loading...
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</div>
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) : (
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<>
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{/* Show placeholder conversation if it exists */}
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{placeholderConversation && (
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<div
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className="p-2 rounded-lg bg-accent/50 border border-dashed border-accent cursor-pointer group"
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onClick={() => {
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// Don't load placeholder as a real conversation, just focus the input
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if (typeof window !== "undefined") {
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window.dispatchEvent(new CustomEvent("focusInput"));
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}
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}}
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>
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<div className="text-sm font-medium text-foreground mb-1 truncate">
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{placeholderConversation.title}
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</div>
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<div className="text-xs text-muted-foreground">
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Start typing to begin...
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</div>
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</div>
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)}
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{/* Show regular conversations */}
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{conversations.length === 0 && !placeholderConversation ? (
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<div className="text-sm text-muted-foreground p-2">
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No conversations yet
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</div>
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) : (
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conversations.map((conversation) => (
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<div
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key={conversation.response_id}
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className={`p-2 rounded-lg group ${
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loading
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? "opacity-50 cursor-not-allowed"
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: "hover:bg-accent cursor-pointer"
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} ${
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currentConversationId === conversation.response_id
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? "bg-accent"
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: ""
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}`}
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onClick={() => {
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if (loading) return;
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loadConversation(conversation);
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refreshConversations();
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}}
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>
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<div className="text-sm font-medium text-foreground mb-1 truncate">
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{conversation.title}
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</div>
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<div className="text-xs text-muted-foreground">
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{conversation.total_messages} messages
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</div>
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{conversation.last_activity && (
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<div className="text-xs text-muted-foreground">
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{new Date(
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conversation.last_activity
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).toLocaleDateString()}
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</div>
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)}
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</div>
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))
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)}
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</>
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)}
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</div>
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{/* Conversation Knowledge Section - appears right after last conversation */}
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<div className="flex-shrink-0 mt-4">
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<div className="flex items-center justify-between mb-3">
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<h3 className="text-sm font-medium text-muted-foreground">
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Conversation knowledge
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</h3>
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<button
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onClick={handleFilePickerClick}
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className="p-1 hover:bg-accent rounded"
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disabled={loading}
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>
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<Plus className="h-4 w-4 text-muted-foreground" />
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</button>
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</div>
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<input
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ref={fileInputRef}
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type="file"
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onChange={handleFilePickerChange}
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className="hidden"
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accept=".pdf,.doc,.docx,.txt,.md,.rtf,.odt"
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/>
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<div className="overflow-y-auto scrollbar-hide space-y-1 max-h-40">
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{conversationDocs.length === 0 ? (
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<div className="text-sm text-muted-foreground p-2">
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No documents yet
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</div>
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) : (
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conversationDocs.map((doc, index) => (
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<div
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key={index}
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className="p-2 rounded-lg hover:bg-accent cursor-pointer group flex items-center"
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>
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<FileText className="h-4 w-4 mr-2 text-muted-foreground flex-shrink-0" />
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<div className="flex-1 min-w-0">
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<div className="text-sm text-foreground truncate">
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{doc.filename}
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</div>
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</div>
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</div>
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))
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)}
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</div>
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</div>
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</div>
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</div>
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)}
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</div>
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);
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}
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