Files
patch-pilot/src/components/ChatWindow.tsx
T

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22 KiB
TypeScript

'use client';
import { useState, useRef, useEffect, useMemo } from 'react';
import {
Box,
Typography,
Paper,
Avatar,
IconButton,
Chip,
useMediaQuery,
Tooltip,
Fab,
Zoom,
} from '@mui/material';
import { useTheme } from '@mui/material/styles';
import { motion, AnimatePresence } from 'framer-motion';
import {
User,
Bot,
Sparkles,
ChevronDown,
RotateCcw,
Copy,
Check,
AlertCircle,
} from 'lucide-react';
import Logo from './Logo';
import { useChatStore, type MessageAttachment } from '../services/chat-store';
import { useAuthStore } from '../services/auth-store';
import { useToolsStore } from '../services/tools-store';
import { useReservationStore } from '../services/reservation-store';
import { MOCK_USERS } from '../services/mock-data';
import { fileToDataUrl } from '../services/file-utils';
import AIInput from './AIInput';
import MarkdownMessage from './MarkdownMessage';
interface ChatApiResponse {
content: string;
mode?: 'live' | 'mock' | 'mock-fallback';
matchedTools?: unknown[];
sources?: string[];
error?: string;
}
const SUGGESTED_PROMPTS = [
{ icon: '🔧', text: 'Wie repariere ich ein tropfendes Fahrrad-Ventil?' },
{ icon: '🪛', text: 'Welches Werkzeug brauche ich zum Bohren in Beton?' },
{ icon: '🖨️', text: 'Tipps für meinen ersten 3D-Druck mit PLA' },
{ icon: '📅', text: 'Wann ist das Repair Café geöffnet?' },
];
function formatTime(ts: number) {
return new Date(ts).toLocaleTimeString('de-DE', {
hour: '2-digit',
minute: '2-digit',
});
}
export default function ChatWindow() {
const theme = useTheme();
const isMobile = useMediaQuery(theme.breakpoints.down('md'));
const { sessions, activeSessionId, addMessage, createSession } = useChatStore();
const [isLoading, setIsLoading] = useState(false);
const [lastMode, setLastMode] = useState<ChatApiResponse['mode'] | null>(null);
const [showScrollDown, setShowScrollDown] = useState(false);
const [copiedId, setCopiedId] = useState<string | null>(null);
const scrollRef = useRef<HTMLDivElement>(null);
const bottomRef = useRef<HTMLDivElement>(null);
const activeSession = useMemo(
() => sessions.find((s) => s.id === activeSessionId) ?? null,
[sessions, activeSessionId]
);
useEffect(() => {
if (!activeSession || activeSession.messages.length === 0) return;
const last = activeSession.messages[activeSession.messages.length - 1];
if (last.role === 'user' && !isLoading) {
void sendToApi(activeSession.id);
}
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [activeSession?.messages.length]);
useEffect(() => {
bottomRef.current?.scrollIntoView({ behavior: 'smooth', block: 'end' });
}, [activeSession?.messages.length, isLoading]);
useEffect(() => {
const el = scrollRef.current;
if (!el) return;
const onScroll = () => {
const distance = el.scrollHeight - el.scrollTop - el.clientHeight;
setShowScrollDown(distance > 200);
};
el.addEventListener('scroll', onScroll);
return () => el.removeEventListener('scroll', onScroll);
}, [activeSessionId]);
const sendToApi = async (sessionId: string) => {
const current = useChatStore.getState().sessions.find((s) => s.id === sessionId);
if (!current) return;
setIsLoading(true);
try {
const history = current.messages.map((m) => ({
role: m.role,
content: m.content,
attachments: m.attachments,
}));
const user = useAuthStore.getState().user;
const tools = useToolsStore.getState().tools;
const reservations = useReservationStore.getState().reservations;
const context = {
userRole: user?.role,
username: user?.username,
tools,
reservations,
users: MOCK_USERS.map((u) => ({ id: u.id, username: u.username, role: u.role })),
};
const response = await fetch('/api/chat', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ messages: history, context }),
});
const data = (await response.json()) as ChatApiResponse;
if (data.error || !data.content) throw new Error(data.error || 'Empty response');
setLastMode(data.mode ?? null);
addMessage(sessionId, { role: 'assistant', content: data.content });
} catch (error) {
const msg = error instanceof Error ? error.message : 'Unbekannter Fehler';
addMessage(sessionId, {
role: 'assistant',
content: `⚠️ Es gab ein Problem bei der Verbindung: ${msg}`,
});
} finally {
setIsLoading(false);
}
};
const handleSend = async (content: string, files?: File[]) => {
const hasFiles = Boolean(files && files.length > 0);
if (!content.trim() && !hasFiles) return;
let targetId = activeSessionId;
if (!targetId) targetId = createSession(content.slice(0, 30) || 'Bild-Analyse');
let attachments: MessageAttachment[] | undefined;
if (hasFiles) {
const processed = await Promise.all(
files!.map(async (file) => {
const { dataUrl, type, size } = await fileToDataUrl(file);
return { name: file.name, type, dataUrl, size };
})
);
attachments = processed;
}
addMessage(targetId, {
role: 'user',
content: content.trim(),
attachments,
});
};
const handleSuggested = (text: string) => handleSend(text);
const handleCopy = async (id: string, text: string) => {
try {
await navigator.clipboard.writeText(text);
setCopiedId(id);
setTimeout(() => setCopiedId((cur) => (cur === id ? null : cur)), 1500);
} catch {
/* ignore */
}
};
const handleRetry = () => {
if (!activeSession || activeSession.messages.length === 0 || !activeSessionId) return;
const lastUser = [...activeSession.messages].reverse().find((m) => m.role === 'user');
if (lastUser) void sendToApi(activeSessionId);
};
const scrollToBottom = () =>
bottomRef.current?.scrollIntoView({ behavior: 'smooth', block: 'end' });
if (!activeSession) return <EmptyState onPick={handleSuggested} />;
const isEmpty = activeSession.messages.length === 0;
return (
<Box
sx={{
flexGrow: 1,
display: 'flex',
flexDirection: 'column',
height: '100%',
bgcolor: 'background.default',
position: 'relative',
minWidth: 0,
}}
>
{/* Header */}
<Box
sx={{
px: { xs: 2, md: 3 },
py: 1.5,
borderBottom: '1px solid',
borderColor: 'divider',
bgcolor: 'background.paper',
display: 'flex',
alignItems: 'center',
gap: 1.5,
minHeight: 56,
flexShrink: 0,
}}
>
<Box
sx={{
width: 34,
height: 34,
borderRadius: 2.5,
background: 'linear-gradient(135deg, #FF6B00, #E55F00)',
color: 'white',
display: 'grid',
placeItems: 'center',
flexShrink: 0,
boxShadow: 'var(--pp-shadow-brand)',
}}
>
<Bot size={16} />
</Box>
<Box sx={{ flexGrow: 1, minWidth: 0 }}>
<Typography
variant="subtitle1"
sx={{
fontWeight: 700,
overflow: 'hidden',
textOverflow: 'ellipsis',
whiteSpace: 'nowrap',
fontSize: '0.95rem',
lineHeight: 1.2,
}}
>
{activeSession.title}
</Typography>
<Typography variant="caption" color="text.secondary" sx={{ fontSize: '0.72rem' }}>
{activeSession.messages.length} Nachrichten · PatchPilot-KI
</Typography>
</Box>
<ModeBadge mode={lastMode} />
</Box>
{/* Messages */}
<Box
ref={scrollRef}
sx={{
flexGrow: 1,
overflowY: 'auto',
px: { xs: 2, md: 4 },
py: { xs: 2.5, md: 3.5 },
display: 'flex',
flexDirection: 'column',
gap: 2,
}}
>
{isEmpty && (
<Box sx={{ m: 'auto', textAlign: 'center', maxWidth: 480, py: 4 }}>
<Box
sx={{
width: 52,
height: 52,
mx: 'auto',
borderRadius: 3,
display: 'grid',
placeItems: 'center',
background: 'linear-gradient(135deg, #FF6B00, #E55F00)',
color: 'white',
mb: 2,
boxShadow: 'var(--pp-shadow-brand)',
}}
>
<Sparkles size={24} />
</Box>
<Typography variant="h6" sx={{ fontWeight: 700, mb: 0.5 }}>
Worüber sollen wir reden?
</Typography>
<Typography variant="body2" color="text.secondary">
Wähle einen Vorschlag unten oder schreibe deine Frage.
</Typography>
</Box>
)}
<AnimatePresence initial={false}>
{activeSession.messages.map((msg) => {
const isUser = msg.role === 'user';
return (
<motion.div
key={msg.id}
initial={{ opacity: 0, y: 8 }}
animate={{ opacity: 1, y: 0 }}
exit={{ opacity: 0 }}
transition={{ duration: 0.22, ease: 'easeOut' }}
>
<Box
sx={{
display: 'flex',
gap: { xs: 1.25, md: 1.5 },
flexDirection: isUser ? 'row-reverse' : 'row',
alignItems: 'flex-start',
}}
>
<Avatar
sx={{
bgcolor: isUser ? 'primary.main' : 'secondary.main',
color: 'white',
width: 30,
height: 30,
mt: 0.5,
flexShrink: 0,
}}
>
{isUser ? <User size={15} /> : <Bot size={15} />}
</Avatar>
<Box
sx={{
maxWidth: { xs: '85%', md: '75%' },
display: 'flex',
flexDirection: 'column',
alignItems: isUser ? 'flex-end' : 'flex-start',
gap: 0.5,
}}
>
<Paper
elevation={0}
sx={{
px: { xs: 1.75, md: 2 },
py: { xs: 1.25, md: 1.5 },
borderRadius: 2.5,
borderTopRightRadius: isUser ? 6 : undefined,
borderTopLeftRadius: !isUser ? 6 : undefined,
bgcolor: isUser ? 'primary.main' : 'background.paper',
color: isUser ? 'white' : 'text.primary',
border: isUser ? 'none' : '1px solid',
borderColor: 'divider',
wordBreak: 'break-word',
}}
>
{msg.attachments && msg.attachments.length > 0 && (
<Box
sx={{
display: 'grid',
gridTemplateColumns:
msg.attachments.length === 1
? '1fr'
: 'repeat(auto-fill, minmax(120px, 1fr))',
gap: 0.75,
mb: msg.content ? 1 : 0,
}}
>
{msg.attachments.map((att, i) =>
att.type.startsWith('image/') ? (
<Box
key={i}
component="a"
href={att.dataUrl}
target="_blank"
rel="noopener noreferrer"
sx={{
display: 'block',
borderRadius: 1.5,
overflow: 'hidden',
border: '1px solid',
borderColor: isUser ? 'rgba(255,255,255,0.25)' : 'divider',
maxWidth: msg.attachments!.length === 1 ? 280 : 'unset',
}}
>
<Box
component="img"
src={att.dataUrl}
alt={att.name}
sx={{
width: '100%',
height: 'auto',
display: 'block',
maxHeight: 260,
objectFit: 'cover',
}}
/>
</Box>
) : (
<Box
key={i}
sx={{
p: 1,
borderRadius: 1.5,
border: '1px solid',
borderColor: isUser ? 'rgba(255,255,255,0.25)' : 'divider',
fontSize: '0.75rem',
fontWeight: 600,
bgcolor: isUser ? 'rgba(255,255,255,0.1)' : 'action.hover',
display: 'flex',
alignItems: 'center',
gap: 0.75,
}}
>
📎 {att.name}
</Box>
)
)}
</Box>
)}
{msg.content &&
(isUser ? (
<Typography
variant="body1"
sx={{ fontSize: '0.95rem', lineHeight: 1.55, whiteSpace: 'pre-wrap' }}
>
{msg.content}
</Typography>
) : (
<MarkdownMessage content={msg.content} />
))}
</Paper>
<Box
sx={{
display: 'flex',
alignItems: 'center',
gap: 0.5,
px: 0.25,
opacity: 0.7,
}}
>
<Typography variant="caption" color="text.secondary" sx={{ fontSize: '0.7rem' }}>
{formatTime(msg.timestamp)}
</Typography>
{!isUser && (
<Tooltip title={copiedId === msg.id ? 'Kopiert!' : 'Kopieren'}>
<IconButton
size="small"
onClick={() => handleCopy(msg.id, msg.content)}
sx={{ p: 0.25, color: 'text.secondary' }}
>
{copiedId === msg.id ? <Check size={12} /> : <Copy size={12} />}
</IconButton>
</Tooltip>
)}
</Box>
</Box>
</Box>
</motion.div>
);
})}
</AnimatePresence>
{isLoading && (
<motion.div
initial={{ opacity: 0, y: 8 }}
animate={{ opacity: 1, y: 0 }}
transition={{ duration: 0.2 }}
>
<Box sx={{ display: 'flex', gap: 1.5, alignItems: 'flex-start' }}>
<Avatar
sx={{
bgcolor: 'secondary.main',
color: 'white',
width: 30,
height: 30,
mt: 0.5,
flexShrink: 0,
}}
>
<Bot size={15} />
</Avatar>
<Paper
elevation={0}
sx={{
px: 2,
py: 1.5,
borderRadius: 2.5,
borderTopLeftRadius: 6,
border: '1px solid',
borderColor: 'divider',
bgcolor: 'background.paper',
display: 'inline-flex',
alignItems: 'center',
color: 'text.secondary',
}}
>
<Box component="span" className="pp-typing">
<span /> <span /> <span />
</Box>
</Paper>
</Box>
</motion.div>
)}
<div ref={bottomRef} />
</Box>
{/* Scroll-to-bottom */}
<Zoom in={showScrollDown}>
<Fab
size="small"
color="primary"
onClick={scrollToBottom}
sx={{
position: 'absolute',
bottom: { xs: 140, md: 150 },
right: { xs: 16, md: 28 },
boxShadow: 'var(--pp-shadow-brand)',
}}
aria-label="Zum Ende scrollen"
>
<ChevronDown size={18} />
</Fab>
</Zoom>
{/* Footer */}
<Box
sx={{
px: { xs: 2, md: 4 },
pt: 1.5,
pb: { xs: 2, md: 2.5 },
borderTop: '1px solid',
borderColor: 'divider',
bgcolor: 'background.paper',
flexShrink: 0,
}}
>
{isEmpty && (
<Box
sx={{
display: 'flex',
flexWrap: 'wrap',
gap: 1,
mb: 1.5,
maxWidth: 760,
mx: 'auto',
}}
>
{SUGGESTED_PROMPTS.map((p) => (
<Chip
key={p.text}
onClick={() => handleSuggested(p.text)}
clickable
variant="outlined"
label={`${p.icon} ${p.text}`}
sx={{
borderRadius: 2,
height: 32,
fontSize: '0.78rem',
borderStyle: 'dashed',
'&:hover': {
borderColor: 'primary.main',
bgcolor: 'action.hover',
borderStyle: 'solid',
},
}}
/>
))}
</Box>
)}
<Box
sx={{
display: 'flex',
alignItems: 'flex-end',
gap: 1,
maxWidth: 760,
mx: 'auto',
}}
>
<Box sx={{ flexGrow: 1, minWidth: 0 }}>
<AIInput onSend={handleSend} isLoading={isLoading} compact />
</Box>
{!isMobile && (
<Tooltip title="Letzte Anfrage erneut senden">
<span>
<IconButton
onClick={handleRetry}
disabled={isLoading || activeSession.messages.length === 0}
sx={{
border: '1px solid',
borderColor: 'divider',
borderRadius: 2,
width: 40,
height: 40,
}}
>
<RotateCcw size={16} />
</IconButton>
</span>
</Tooltip>
)}
</Box>
</Box>
</Box>
);
}
function EmptyState({ onPick }: { onPick: (text: string) => void }) {
return (
<Box
sx={{
flexGrow: 1,
display: 'flex',
flexDirection: 'column',
alignItems: 'center',
justifyContent: 'center',
p: { xs: 3, md: 6 },
textAlign: 'center',
bgcolor: 'background.default',
minWidth: 0,
}}
>
<Box sx={{ mb: 2.5 }}>
<Logo size={72} />
</Box>
<Typography variant="h5" sx={{ fontWeight: 800, mb: 1, letterSpacing: '-0.01em' }}>
Womit darf ich helfen?
</Typography>
<Typography color="text.secondary" sx={{ maxWidth: 460, mb: 4, lineHeight: 1.55 }}>
Frag mich nach Werkzeugen, Reparatur-Tipps oder beschreibe dein Problem.
</Typography>
<Box
sx={{
display: 'grid',
gridTemplateColumns: { xs: '1fr', sm: 'repeat(2, 1fr)' },
gap: 1.5,
width: '100%',
maxWidth: 640,
}}
>
{SUGGESTED_PROMPTS.map((p) => (
<Paper
key={p.text}
variant="outlined"
onClick={() => onPick(p.text)}
sx={{
p: 2,
cursor: 'pointer',
textAlign: 'left',
borderRadius: 2.5,
transition: 'all 0.2s',
borderStyle: 'dashed',
'&:hover': {
borderColor: 'primary.main',
bgcolor: 'action.hover',
transform: 'translateY(-2px)',
borderStyle: 'solid',
},
}}
>
<Typography variant="body2" sx={{ fontWeight: 600, fontSize: '0.88rem' }}>
{p.icon}&nbsp;&nbsp;{p.text}
</Typography>
</Paper>
))}
</Box>
</Box>
);
}
function ModeBadge({ mode }: { mode: ChatApiResponse['mode'] | null }) {
if (!mode) return null;
if (mode === 'live') {
return (
<Chip
size="small"
label="Live"
sx={{
bgcolor: 'success.main',
color: 'white',
fontWeight: 700,
fontSize: '0.65rem',
height: 22,
letterSpacing: '0.05em',
}}
/>
);
}
if (mode === 'mock-fallback') {
return (
<Tooltip title="Live-API nicht erreichbar, Fallback aktiv">
<Chip
size="small"
icon={<AlertCircle size={11} />}
label="Fallback"
sx={{
bgcolor: 'warning.main',
color: 'white',
fontWeight: 700,
fontSize: '0.65rem',
height: 22,
}}
/>
</Tooltip>
);
}
return (
<Chip
size="small"
label="Demo"
variant="outlined"
sx={{ fontWeight: 700, fontSize: '0.65rem', height: 22 }}
/>
);
}