Add savings chat analysis feature
This commit is contained in:
Matthias
265
src/pages/SavingsChatPage.tsx
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265
src/pages/SavingsChatPage.tsx
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@@ -0,0 +1,265 @@
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import { type FormEvent, useEffect, useRef, useState } from "react";
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import { useAction, useQuery } from "convex/react";
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import { MessageCircle, Send, Loader2 } from "lucide-react";
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import { api } from "../../convex/_generated/api";
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import { useAccountFilterId } from "@/components/layout/AccountFilter";
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import { useFilters } from "@/context/FilterContext";
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import { Button } from "@/components/ui/button";
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import { Input } from "@/components/ui/input";
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import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
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import { Separator } from "@/components/ui/separator";
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import { ChatHistory, type ChatHistoryItem } from "@/components/chat/ChatHistory";
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import { toast } from "sonner";
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type ChatMessage = { role: "user" | "assistant"; content: string };
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type ChatSession = {
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id: string;
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title: string;
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createdAt: number;
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updatedAt: number;
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messages: ChatMessage[];
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};
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const STORAGE_KEY = "savings-chat-sessions";
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const initialAssistantMessage: ChatMessage = {
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role: "assistant",
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content: "Frag mich zu deinen Umsätzen – ich werte sie im aktuellen Zeitraum aus.",
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};
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const fallbackMessages = [initialAssistantMessage];
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function createSession(): ChatSession {
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const now = Date.now();
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const randomId =
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typeof crypto !== "undefined" && "randomUUID" in crypto
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? crypto.randomUUID()
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: `${now}-${Math.random().toString(36).slice(2)}`;
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return {
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id: randomId,
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title: "Neuer Chat",
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createdAt: now,
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updatedAt: now,
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messages: [initialAssistantMessage],
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};
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}
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function loadSessions(): ChatSession[] {
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try {
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const raw = localStorage.getItem(STORAGE_KEY);
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if (!raw) return [createSession()];
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const parsed = JSON.parse(raw) as ChatSession[];
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if (!Array.isArray(parsed) || parsed.length === 0) return [createSession()];
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return parsed;
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} catch {
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return [createSession()];
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}
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}
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function titleFromMessages(messages: ChatMessage[]) {
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const firstUserMessage = messages.find((message) => message.role === "user")?.content.trim();
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if (!firstUserMessage) return "Neuer Chat";
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return firstUserMessage.length > 44 ? `${firstUserMessage.slice(0, 44)}…` : firstUserMessage;
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}
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export function SavingsChatPage() {
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const { from, to, monthBasis } = useFilters();
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const accountId = useAccountFilterId();
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const [draft, setDraft] = useState("");
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const [sessions, setSessions] = useState<ChatSession[]>(loadSessions);
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const [activeSessionId, setActiveSessionId] = useState(() => sessions[0]?.id ?? "");
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const [isSubmitting, setIsSubmitting] = useState(false);
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const listRef = useRef<HTMLDivElement | null>(null);
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const activeSession = sessions.find((session) => session.id === activeSessionId) ?? sessions[0];
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const messages = activeSession?.messages ?? fallbackMessages;
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const context = useQuery(api.savingsChat.getContext, {
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from,
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to,
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accountId,
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basis: monthBasis,
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});
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const ask = useAction(api.savingsChat.ask);
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const buttonDisabled = isSubmitting || draft.trim().length === 0;
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const formatAmount = (amount: number) =>
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new Intl.NumberFormat("de-DE", {
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style: "currency",
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currency: "EUR",
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}).format(amount);
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const getContextSummary = () => {
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if (!context) return "Lade Kontext…";
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return `${context.totals.transactionCount} Umsätze · Einnahmen ${formatAmount(
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context.totals.income,
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)} · Ausgaben ${formatAmount(context.totals.expenses)}`;
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};
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useEffect(() => {
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listRef.current?.lastElementChild?.scrollIntoView({ behavior: "smooth" });
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}, [messages]);
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useEffect(() => {
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localStorage.setItem(STORAGE_KEY, JSON.stringify(sessions));
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}, [sessions]);
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const updateSession = (id: string, nextMessages: ChatMessage[]) => {
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const now = Date.now();
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setSessions((prev) =>
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prev.map((session) =>
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session.id === id
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? {
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...session,
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title: titleFromMessages(nextMessages),
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updatedAt: now,
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messages: nextMessages,
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}
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: session,
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),
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);
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};
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const createNewChat = () => {
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const session = createSession();
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setSessions((prev) => [session, ...prev]);
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setActiveSessionId(session.id);
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setDraft("");
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};
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const deleteChat = (id: string) => {
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const remaining = sessions.filter((session) => session.id !== id);
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const nextSessions = remaining.length > 0 ? remaining : [createSession()];
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setSessions(nextSessions);
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if (id === activeSessionId) setActiveSessionId(nextSessions[0].id);
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};
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const historyItems: ChatHistoryItem[] = sessions
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.map((session) => ({
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id: session.id,
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title: session.title,
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updatedAt: session.updatedAt,
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messageCount: session.messages.length,
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}))
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.sort((a, b) => b.updatedAt - a.updatedAt);
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const submit = async (event: FormEvent) => {
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event.preventDefault();
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const content = draft.trim();
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if (!content || isSubmitting) return;
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const submittedSessionId = activeSessionId;
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const typedNextMessages: ChatMessage[] = [...messages, { role: "user", content }];
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updateSession(submittedSessionId, typedNextMessages);
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setDraft("");
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setIsSubmitting(true);
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try {
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const response = await ask({
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messages: typedNextMessages,
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from,
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to,
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accountId,
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basis: monthBasis,
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});
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updateSession(submittedSessionId, [
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...typedNextMessages,
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{ role: "assistant", content: response.answer },
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]);
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} catch (error) {
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console.error(error);
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toast.error("Antwort konnte nicht geladen werden.");
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updateSession(submittedSessionId, [
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...typedNextMessages,
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{
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role: "assistant",
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content: "Ich konnte gerade keine Antwort erzeugen. Bitte später erneut versuchen.",
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},
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]);
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} finally {
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setIsSubmitting(false);
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}
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};
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return (
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<div className="grid gap-4 xl:grid-cols-[280px_minmax(0,1fr)]">
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<ChatHistory
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items={historyItems}
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activeId={activeSessionId}
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onSelect={setActiveSessionId}
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onCreate={createNewChat}
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onDelete={deleteChat}
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/>
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<div className="min-w-0 space-y-4">
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<div className="mb-2 flex items-center gap-2">
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<MessageCircle className="h-5 w-5" />
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<h1 className="text-lg font-semibold">Talk to your savings account</h1>
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</div>
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<Card>
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<CardHeader>
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<CardTitle>Kontext der Auswertung</CardTitle>
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</CardHeader>
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<CardContent className="space-y-1 text-sm">
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<p>Zeitraum: {from} bis {to}</p>
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<p>Basis: {monthBasis === "effective" ? "Effektiv" : "Buchungstag"}</p>
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<p>
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Konto: {context?.accountName ?? "Alle Konten"} (Basis-Saldo{" "}
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{context ? formatAmount(context.totals.balance) : "—"})
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</p>
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<p>
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{context ? getContextSummary() : "Lade Kontext…"}
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</p>
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</CardContent>
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</Card>
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<Card>
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<CardContent className="p-4">
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<div className="h-[52vh] overflow-y-auto" ref={listRef}>
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<div className="space-y-3">
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{messages.map((message, index) => (
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<div
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key={`${message.role}-${index}`}
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className={`rounded-lg border p-3 ${
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message.role === "user" ? "bg-muted/50" : "bg-background"
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}`}
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>
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<p className="text-xs uppercase text-muted-foreground">{message.role}</p>
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<p className="whitespace-pre-wrap text-sm">{message.content}</p>
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</div>
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))}
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{isSubmitting && (
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<div className="flex items-center gap-2 text-sm text-muted-foreground">
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<Loader2 className="h-4 w-4 animate-spin" />
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Denk mit der KI nach…
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</div>
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)}
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</div>
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</div>
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</CardContent>
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</Card>
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<form className="flex gap-2" onSubmit={submit}>
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<Input
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value={draft}
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onChange={(event) => setDraft(event.target.value)}
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placeholder="Welche Auswertung soll ich machen?"
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disabled={isSubmitting}
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autoFocus
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/>
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<Button type="submit" disabled={buttonDisabled}>
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<Send className="h-4 w-4" />
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Senden
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</Button>
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</form>
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<Separator />
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<p className="text-xs text-muted-foreground">
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Antwortmodell: {context ? "Server-seitig bereit" : "…"}
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</p>
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</div>
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</div>
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);
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}
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