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import React, { useState, useRef, useEffect } from 'react';
import { Button } from '@/components/ui/button';
import { Textarea } from '@/components/ui/textarea';
import { Badge } from '@/components/ui/badge';
import { Avatar, AvatarFallback } from '@/components/ui/avatar';
import { Card, CardContent } from '@/components/ui/card';
import {
Send,
User,
Shield,
CheckCheck,
Paperclip,
Smile,
MoreVertical,
Reply
} from 'lucide-react';
import { cn } from '@/lib/utils';
import { useTranslation } from 'react-i18next';
interface Message {
id: number;
message: string;
username: string;
user_role: string;
created_at: string;
is_internal: boolean;
is_read: boolean;
}
interface Ticket {
id: number;
title: string;
description: string;
status: string;
priority: string;
creator_username: string;
created_at: string;
messages: Message[];
}
interface TicketChatProps {
ticket: Ticket;
newMessage: string;
setNewMessage: (message: string) => void;
onSendMessage: () => void;
sendingMessage: boolean;
currentUserRole?: string;
}
export default function TicketChat({
ticket,
newMessage,
setNewMessage,
onSendMessage,
sendingMessage,
currentUserRole = 'reseller'
}: TicketChatProps) {
const { t } = useTranslation();
const messagesEndRef = useRef<HTMLDivElement>(null);
const textareaRef = useRef<HTMLTextAreaElement>(null);
const [isTyping, setIsTyping] = useState(false);
// Auto-scroll to bottom when new messages arrive
useEffect(() => {
messagesEndRef.current?.scrollIntoView({ behavior: 'smooth' });
}, [ticket.messages]);
// Auto-resize textarea
useEffect(() => {
if (textareaRef.current) {
textareaRef.current.style.height = 'auto';
textareaRef.current.style.height = `${textareaRef.current.scrollHeight}px`;
}
}, [newMessage]);
const handleKeyDown = (e: React.KeyboardEvent) => {
if (e.key === 'Enter' && !e.shiftKey) {
e.preventDefault();
if (newMessage.trim()) {
onSendMessage();
}
}
};
const getMessageAlignment = (message: Message) => {
const isCurrentUser = message.user_role === currentUserRole;
return isCurrentUser ? 'flex-row-reverse' : 'flex-row';
};
const getMessageBubbleStyle = (message: Message) => {
const isCurrentUser = message.user_role === currentUserRole;
const isAdmin = message.user_role === 'admin';
if (isCurrentUser) {
return 'bg-primary text-primary-foreground ml-12';
} else if (isAdmin) {
return 'bg-green-500/10 text-green-600 border border-green-500/20 mr-12';
} else {
return 'bg-muted text-muted-foreground border border-muted mr-12';
}
};
const getUserInitials = (username: string) => {
return username.split(' ').map(n => n[0]).join('').toUpperCase().slice(0, 2);
};
const formatTime = (dateString: string) => {
const date = new Date(dateString);
const now = new Date();
const diffInHours = (now.getTime() - date.getTime()) / (1000 * 60 * 60);
if (diffInHours < 24) {
return date.toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' });
} else if (diffInHours < 168) { // 7 days
return date.toLocaleDateString([], { weekday: 'short', hour: '2-digit', minute: '2-digit' });
} else {
return date.toLocaleDateString([], { month: 'short', day: 'numeric', hour: '2-digit', minute: '2-digit' });
}
};
const getRoleIcon = (role: string) => {
switch (role) {
case 'admin':
return <Shield className="h-3 w-3 text-green-600" />;
case 'reseller':
return <User className="h-3 w-3 text-primary" />;
default:
return <User className="h-3 w-3 text-muted-foreground" />;
}
};
const getRoleBadgeColor = (role: string) => {
switch (role) {
case 'admin':
return 'bg-green-500/10 text-green-600 border-green-500/20';
case 'reseller':
return 'bg-primary/10 text-primary border-primary/20';
default:
return 'bg-muted text-muted-foreground border-muted';
}
};
return (
<div className="flex flex-col h-full">
{/* Chat Header */}
<div className="flex items-center justify-between p-4 border-b border-border bg-muted/30">
<div className="flex items-center gap-3">
<Avatar className="h-8 w-8">
<AvatarFallback className="bg-primary/10 text-primary text-xs">
{getUserInitials(ticket.creator_username)}
</AvatarFallback>
</Avatar>
<div>
<h3 className="font-semibold text-sm text-foreground">{ticket.title}</h3>
<p className="text-xs text-muted-foreground">
{t('chat.ticket.createdBy', { username: ticket.creator_username })} • {formatTime(ticket.created_at)}
</p>
</div>
</div>
<div className="flex items-center gap-2">
<Badge variant="outline" className="text-xs">
{ticket.status.replace('_', ' ')}
</Badge>
<Badge variant="outline" className="text-xs">
{ticket.priority}
</Badge>
</div>
</div>
{/* Messages Container */}
<div className="flex-1 overflow-y-auto p-4 space-y-4 bg-background/50">
{/* Initial Ticket Description */}
<Card className="border-l-4 border-l-primary bg-primary/5">
<CardContent className="p-4">
<div className="flex items-center gap-2 mb-2">
<Avatar className="h-6 w-6">
<AvatarFallback className="bg-primary/10 text-primary text-xs">
{getUserInitials(ticket.creator_username)}
</AvatarFallback>
</Avatar>
<span className="font-medium text-primary text-sm">{ticket.creator_username}</span>
<Badge className="bg-primary/10 text-primary text-xs">{t('chat.ticket.initialRequest')}</Badge>
<span className="text-xs text-primary ml-auto">
{formatTime(ticket.created_at)}
</span>
</div>
<p className="text-primary text-sm leading-relaxed">{ticket.description}</p>
</CardContent>
</Card>
{/* Chat Messages */}
{ticket.messages.map((message) => {
// Don't show internal messages to non-admin users
if (message.is_internal && currentUserRole !== 'admin') return null;
const isCurrentUser = message.user_role === currentUserRole;
const isAdmin = message.user_role === 'admin';
return (
<div
key={message.id}
className={cn('flex gap-3 group', getMessageAlignment(message))}
>
{!isCurrentUser && (
<Avatar className="h-8 w-8 mt-1">
<AvatarFallback className={cn(
'text-xs',
isAdmin ? 'bg-green-500/10 text-green-600' : 'bg-muted text-muted-foreground'
)}>
{getUserInitials(message.username)}
</AvatarFallback>
</Avatar>
)}
<div className={cn('flex flex-col', isCurrentUser ? 'items-end' : 'items-start')}>
{!isCurrentUser && (
<div className="flex items-center gap-2 mb-1">
<span className="text-xs font-medium text-foreground">{message.username}</span>
{getRoleIcon(message.user_role)}
<Badge variant="outline" className={cn('text-xs', getRoleBadgeColor(message.user_role))}>
{message.user_role === 'admin' ? t('chat.ticket.supportRole') : t('chat.ticket.customerRole')}
</Badge>
{message.is_internal && (
<Badge variant="outline" className="text-xs bg-orange-500/10 text-orange-600">
{t('chat.ticket.internal')}
</Badge>
)}
</div>
)}
<div className={cn(
'rounded-2xl px-4 py-2 max-w-[80%] shadow-sm',
getMessageBubbleStyle(message)
)}>
<p className="text-sm leading-relaxed whitespace-pre-wrap">{message.message}</p>
</div>
<div className={cn(
'flex items-center gap-1 mt-1 opacity-0 group-hover:opacity-100 transition-opacity',
isCurrentUser ? 'flex-row-reverse' : 'flex-row'
)}>
<span className="text-xs text-muted-foreground">{formatTime(message.created_at)}</span>
{isCurrentUser && message.is_read && (
<CheckCheck className="h-3 w-3 text-primary" />
)}
<Button variant="ghost" size="sm" className="h-6 w-6 p-0 opacity-0 group-hover:opacity-100">
<MoreVertical className="h-3 w-3" />
</Button>
</div>
</div>
{isCurrentUser && (
<Avatar className="h-8 w-8 mt-1">
<AvatarFallback className="bg-primary/10 text-primary text-xs">
{getUserInitials(message.username)}
</AvatarFallback>
</Avatar>
)}
</div>
);
})}
{/* Typing Indicator */}
{isTyping && (
<div className="flex items-center gap-2 text-muted-foreground">
<div className="flex gap-1">
<div className="w-2 h-2 bg-muted-foreground rounded-full animate-bounce"></div>
<div className="w-2 h-2 bg-muted-foreground rounded-full animate-bounce" style={{ animationDelay: '0.1s' }}></div>
<div className="w-2 h-2 bg-muted-foreground rounded-full animate-bounce" style={{ animationDelay: '0.2s' }}></div>
</div>
<span className="text-xs">{t('chat.ticket.supportTyping')}</span>
</div>
)}
<div ref={messagesEndRef} />
</div>
{/* Message Input */}
<div className="border-t border-border bg-card p-4">
<div className="flex items-end gap-3">
<div className="flex-1 relative">
<Textarea
ref={textareaRef}
placeholder={t('chat.ticket.messagePlaceholder')}
value={newMessage}
onChange={(e) => setNewMessage(e.target.value)}
onKeyDown={handleKeyDown}
className="min-h-[44px] max-h-32 resize-none pr-12 rounded-2xl border-border focus:border-primary focus:ring-primary/20"
rows={1}
/>
<div className="absolute right-2 bottom-2 flex items-center gap-1">
<Button variant="ghost" size="sm" className="h-8 w-8 p-0">
<Paperclip className="h-4 w-4 text-muted-foreground" />
</Button>
<Button variant="ghost" size="sm" className="h-8 w-8 p-0">
<Smile className="h-4 w-4 text-muted-foreground" />
</Button>
</div>
</div>
<Button
onClick={onSendMessage}
disabled={!newMessage.trim() || sendingMessage}
className="h-11 w-11 rounded-full bg-primary hover:bg-primary/90 disabled:opacity-50"
size="sm"
>
{sendingMessage ? (
<div className="animate-spin rounded-full h-4 w-4 border-2 border-primary-foreground border-t-transparent"></div>
) : (
<Send className="h-4 w-4" />
)}
</Button>
</div>
<div className="flex items-center justify-between mt-2 text-xs text-muted-foreground">
<span>{t('chat.ticket.sendHint')}</span>
<span>{newMessage.length}/1000</span>
</div>
</div>
</div>
);
}
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