/opt/canhelp/apps/web/src/app/chat

Name	Size	Mode	Actions
page.tsx	24237	0644	edit dl rm

Edit: /opt/canhelp/apps/web/src/app/chat/page.tsx (24237B)

'use client'

import { useState, useEffect, useRef, useCallback, Suspense } from 'react'
import { useRouter, useSearchParams } from 'next/navigation'
import Link from 'next/link'
import { useSession } from '@/lib/auth'
import { useLocale } from '@/context/locale'
import { getChatRooms, getMessages, getDailyUsage } from '@/lib/api'
import { formatShortName } from '@/lib/formatName'
import { io, Socket } from 'socket.io-client'

const API_URL = process.env.NEXT_PUBLIC_API_URL || 'http://localhost:4000'

interface RoomEntry {
  room: {
    id: string
    taskId: string | null
    customerId: string
    specialistId: string
    createdAt: string
  }
  task: { id: string; title: string } | null
  otherUser: { id: string; name: string; firstName?: string; lastName?: string; image?: string } | null
  lastMessage?: { body: string; createdAt: string; translations?: Record<string, string> | null; imageUrl?: string | null } | null
}

interface MessageEntry {
  message: {
    id: string
    roomId: string
    senderId: string
    body: string
    imageUrl?: string | null
    isRead: boolean
    createdAt: string
    translations?: Record<string, string> | null
  }
  sender: { id: string; name: string; firstName?: string | null; lastName?: string | null; image?: string } | null
}

function ChatPageInner() {
  const router = useRouter()
  const searchParams = useSearchParams()
  const { data: session, isPending } = useSession()
  const { t, locale } = useLocale()

const [rooms, setRooms] = useState<RoomEntry[]>([])
  const [loadingRooms, setLoadingRooms] = useState(true)
  const [activeRoomId, setActiveRoomId] = useState<string | null>(null)
  const [messages, setMessages] = useState<MessageEntry[]>([])
  const [loadingMessages, setLoadingMessages] = useState(false)
  const [input, setInput] = useState('')
  const [connected, setConnected] = useState(false)
  const [msgLimit, setMsgLimit] = useState<{ left: number | null; sent: number } | null>(null)
  const [uploadingImage, setUploadingImage] = useState(false)
  const [lightboxUrl, setLightboxUrl] = useState<string | null>(null)

const socketRef = useRef<Socket | null>(null)
  const messagesEndRef = useRef<HTMLDivElement>(null)
  const inputRef = useRef<HTMLTextAreaElement>(null)
  const fileInputRef = useRef<HTMLInputElement>(null)

useEffect(() => {
    if (!isPending && !session) router.push('/login')
  }, [session, isPending])

// Load chat rooms
  useEffect(() => {
    if (!session) return
    getChatRooms()
      .then((data) => {
        setRooms(data)
        const roomParam = searchParams.get('room')
        if (roomParam) setActiveRoomId(roomParam)
      })
      .catch((err) => console.error('[chat] getChatRooms error:', err))
      .finally(() => setLoadingRooms(false))
    getDailyUsage()
      .then((u) => setMsgLimit({ left: u.messagesLeft, sent: u.messagesSent }))
      .catch((err) => console.error('[chat] getDailyUsage error:', err))
  }, [session])

// Setup Socket.IO
  useEffect(() => {
    if (!session) return

const socket = io(API_URL, {
      withCredentials: true,
      transports: ['websocket', 'polling'],
    })

socketRef.current = socket

socket.on('connect', () => setConnected(true))
    socket.on('disconnect', () => setConnected(false))

socket.on('new_message', (msg: MessageEntry['message']) => {
      setMessages((prev) => {
        // avoid duplicate if we get it back from our own send
        if (prev.some((m) => m.message.id === msg.id)) return prev
        // sender info: only known for current user; others show placeholder (? avatar)
        const sender = session.user && session.user.id === msg.senderId
          ? { id: session.user.id, name: session.user.name ?? '', image: session.user.image ?? undefined }
          : null
        return [
          ...prev,
          { message: msg, sender },
        ]
      })
      // Update lastMessage in rooms list and bubble room to top
      setRooms((prev) => {
        const updated = prev.map((r) =>
          r.room.id === msg.roomId
            ? { ...r, lastMessage: { body: msg.body, createdAt: msg.createdAt, translations: msg.translations ?? null, imageUrl: msg.imageUrl ?? null } }
            : r
        )
        return updated.sort((a, b) => {
          const aTime = a.lastMessage?.createdAt ? new Date(a.lastMessage.createdAt).getTime() : new Date(a.room.createdAt).getTime()
          const bTime = b.lastMessage?.createdAt ? new Date(b.lastMessage.createdAt).getTime() : new Date(b.room.createdAt).getTime()
          return bTime - aTime
        })
      })
    })

socket.on('message_translated', ({ id, roomId, translations }: { id: string; roomId?: string; translations: Record<string, string> }) => {
      setMessages((prev) =>
        prev.map((m) =>
          m.message.id === id ? { ...m, message: { ...m.message, translations } } : m,
        ),
      )
      // Also update lastMessage in sidebar if this is the last message of that room
      if (roomId) {
        setRooms((prev) =>
          prev.map((r) =>
            r.room.id === roomId && r.lastMessage
              ? { ...r, lastMessage: { ...r.lastMessage, translations } }
              : r,
          ),
        )
      }
    })

return () => {
      socket.disconnect()
      socketRef.current = null
    }
  }, [session])

// Join room and load messages when activeRoomId changes
  useEffect(() => {
    if (!activeRoomId) return

setLoadingMessages(true)
    setMessages([])

getMessages(activeRoomId)
      .then(setMessages)
      .catch((err) => console.error('[chat] getMessages error:', err))
      .finally(() => setLoadingMessages(false))

socketRef.current?.emit('join_room', activeRoomId)
    socketRef.current?.emit('mark_read', activeRoomId)
  }, [activeRoomId])

// Focus input when active room changes
  useEffect(() => {
    if (!activeRoomId) return
    const t = setTimeout(() => inputRef.current?.focus(), 50)
    return () => clearTimeout(t)
  }, [activeRoomId])

// Auto-scroll on new messages (within container only)
  useEffect(() => {
    messagesEndRef.current?.scrollIntoView({ behavior: 'smooth', block: 'nearest' })
  }, [messages])

// Close lightbox on Escape
  useEffect(() => {
    const onKey = (e: KeyboardEvent) => { if (e.key === 'Escape') setLightboxUrl(null) }
    window.addEventListener('keydown', onKey)
    return () => window.removeEventListener('keydown', onKey)
  }, [])

const sendMessage = useCallback(() => {
    const body = input.trim()
    if (!body || !activeRoomId || !socketRef.current) return
    if (msgLimit && msgLimit.left !== null && msgLimit.left <= 0) return

socketRef.current.emit('send_message', { roomId: activeRoomId, body, locale })
    setInput('')
    // decrement local counter
    setMsgLimit((prev) => prev && prev.left !== null ? { ...prev, left: prev.left - 1, sent: prev.sent + 1 } : prev)
  }, [input, activeRoomId, msgLimit])

const uploadAndSendImage = useCallback(async (file: File) => {
    if (!activeRoomId || !socketRef.current) return
    setUploadingImage(true)
    try {
      const formData = new FormData()
      formData.append('file', file)
      const res = await fetch(`${API_URL}/api/uploads`, {
        method: 'POST',
        credentials: 'include',
        body: formData,
      })
      if (!res.ok) throw new Error('Upload failed')
      const { url } = await res.json() as { url: string }
      socketRef.current.emit('send_message', { roomId: activeRoomId, body: '', imageUrl: url, locale })
    } catch (_) {
      // silent
    } finally {
      setUploadingImage(false)
      if (fileInputRef.current) fileInputRef.current.value = ''
    }
  }, [activeRoomId, locale])

const handleKeyDown = (e: React.KeyboardEvent) => {
    if (e.key === 'Enter' && !e.shiftKey) {
      e.preventDefault()
      sendMessage()
    }
  }

const LOCALE_TAG: Record<string, string> = { ru: 'ru-RU', en: 'en-US', el: 'el-GR' }
  const localeTag = LOCALE_TAG[locale] ?? 'el-GR'

function fmtMsgTime(iso: string): string {
    const d = new Date(iso)
    const now = new Date()
    const diffMin = Math.floor((now.getTime() - d.getTime()) / 60000)
    if (diffMin < 1) return t('chat.just_now')
    if (diffMin < 60) return `${diffMin}${t('chat.min_ago')}`
    if (d.toDateString() === now.toDateString()) return d.toLocaleTimeString(localeTag, { hour: '2-digit', minute: '2-digit' })
    return d.toLocaleDateString(localeTag, { day: '2-digit', month: '2-digit' })
  }

if (isPending || loadingRooms) {
    return <div className="text-center py-20 text-white">{t('common.loading')}</div>
  }

const activeRoom = rooms.find((r) => r.room.id === activeRoomId)
  const currentUserId = session?.user?.id

return (
    <div className="max-w-5xl mx-auto px-4 py-6 h-[calc(100vh-80px)] flex gap-4">
      {/* Rooms sidebar */}
      <div className="w-72 flex-shrink-0 bg-white rounded-xl border border-gray-200 overflow-hidden flex flex-col">
        <div className="p-4 border-b border-gray-100">
          <h1 className="font-bold text-gray-900 text-lg">{t('nav.chat')}</h1>
          <div className={`flex items-center gap-1.5 mt-1`}>
            <span className={`w-2 h-2 rounded-full ${connected ? 'bg-green-400' : 'bg-gray-300'}`} />
            <span className="text-xs text-gray-400">{connected ? t('chat.connected') : t('chat.disconnected')}</span>
          </div>
        </div>

<div className="flex-1 overflow-y-auto">
          {rooms.length === 0 ? (
            <div className="p-6 text-center text-gray-400 text-sm">
              {t('chat.no_rooms')}
            </div>
          ) : (
            rooms.map(({ room, task, otherUser, lastMessage }) => {
              const roomLabel = task?.title ?? (formatShortName(otherUser?.firstName, otherUser?.lastName, otherUser?.name) || t('chat.direct_chat'))
              const roomSub = task ? (formatShortName(otherUser?.firstName, otherUser?.lastName, otherUser?.name) || '') : t('chat.direct_chat')
              return (
              <button
                key={room.id}
                onClick={() => {
                  setActiveRoomId(room.id)
                  setTimeout(() => inputRef.current?.focus(), 50)
                }}
                className={`w-full text-left px-4 py-3 border-b border-gray-50 hover:bg-gray-50 transition ${
                  activeRoomId === room.id ? 'bg-green-50 border-l-2 border-l-green-500' : ''
                }`}
              >
                <div className="flex items-start justify-between gap-1">
                  <p className="text-sm font-medium text-gray-800 line-clamp-1 flex-1">
                    {roomLabel}
                  </p>
                  {lastMessage && (
                    <span className="text-[10px] text-gray-400 shrink-0 mt-0.5">{fmtMsgTime(lastMessage.createdAt)}</span>
                  )}
                </div>
                {lastMessage ? (
                  <p className="text-xs text-gray-400 mt-0.5 line-clamp-1">
                    {lastMessage.imageUrl && !lastMessage.body
                      ? '📷'
                      : lastMessage.translations?.[locale] ?? lastMessage.body}
                  </p>
                ) : task ? (
                  <p className="text-xs text-gray-400 mt-0.5 line-clamp-1">{roomSub}</p>
                ) : null}
              </button>
              )
            })
          )}
        </div>
      </div>

{/* Messages panel */}
      <div className="flex-1 bg-white rounded-xl border border-gray-200 flex flex-col overflow-hidden">
        {!activeRoomId ? (
          <div className="flex-1 flex items-center justify-center text-gray-400 text-sm">
            {t('chat.select')}
          </div>
        ) : (
          <>
            {/* Header */}
            <div className="px-5 py-4 border-b border-gray-100">
              <p className="font-semibold text-gray-800 text-sm">
                {activeRoom?.task?.title ?? (formatShortName(activeRoom?.otherUser?.firstName, activeRoom?.otherUser?.lastName, activeRoom?.otherUser?.name) || t('chat.direct_chat'))}
              </p>
            </div>

{/* Task banner */}
            {activeRoom?.task && (
              <Link
                href={`/tasks/${activeRoom.task.id}`}
                className="flex items-center gap-3 mx-5 mt-4 px-4 py-3 bg-green-50 border border-green-200 rounded-xl hover:bg-green-100 transition group"
              >
                <div className="w-8 h-8 rounded-lg bg-green-600 flex items-center justify-center flex-shrink-0">
                  <svg className="w-4 h-4 text-white" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round">
                    <path d="M16 4h2a2 2 0 012 2v14a2 2 0 01-2 2H6a2 2 0 01-2-2V6a2 2 0 012-2h2" />
                    <rect x="8" y="2" width="8" height="4" rx="1" ry="1" />
                  </svg>
                </div>
                <div className="flex-1 min-w-0">
                  <p className="text-xs text-gray-500 font-medium">{t('chat.linked_task')}</p>
                  <p className="text-sm font-semibold text-gray-800 truncate group-hover:underline">{activeRoom.task.title}</p>
                </div>
                <svg className="w-4 h-4 text-gray-400 flex-shrink-0" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round">
                  <polyline points="9 18 15 12 9 6" />
                </svg>
              </Link>
            )}

{/* Messages */}
            <div className="flex-1 overflow-y-auto px-5 py-4 space-y-3">
              {loadingMessages ? (
                <div className="text-center text-gray-400 text-sm py-10">{t('common.loading')}</div>
              ) : messages.length === 0 ? (
                <div className="text-center text-gray-400 text-sm py-10">{t('chat.no_messages')}</div>
              ) : (
                messages.map(({ message, sender }) => {
                  const isMe = message.senderId === currentUserId
                  return (
                    <div key={message.id} className={`flex gap-2.5 ${isMe ? 'flex-row-reverse' : ''}`}>
                      {/* Avatar */}
                      <div className="w-8 h-8 rounded-full bg-green-100 flex-shrink-0 flex items-center justify-center text-green-700 text-xs font-bold overflow-hidden">
                        {sender?.image ? (
                          <img src={sender.image} alt={sender.name} className="w-full h-full object-cover" />
                        ) : (
                          sender?.name?.[0]?.toUpperCase() ?? '?'
                        )}
                      </div>

{/* Bubble */}
                      <div className={`max-w-[70%] ${isMe ? 'items-end' : 'items-start'} flex flex-col gap-1`}>
                        {!isMe && (
                          <span className="text-xs text-gray-400 px-1">{formatShortName(sender?.firstName, sender?.lastName, sender?.name)}</span>
                        )}
                        {message.imageUrl ? (
                          <button
                            type="button"
                            onClick={() => setLightboxUrl(`${API_URL}${message.imageUrl}`)}
                            className="block focus:outline-none"
                          >
                            {/* eslint-disable-next-line @next/next/no-img-element */}
                            <img
                              src={`${API_URL}${message.imageUrl}`}
                              alt="photo"
                              className="rounded-2xl max-w-[240px] max-h-[320px] object-cover cursor-pointer hover:opacity-90 transition"
                            />
                          </button>
                        ) : (
                          <div
                            className={`px-4 py-2 rounded-2xl text-sm leading-relaxed ${
                              isMe
                                ? 'bg-green-600 text-white rounded-tr-sm'
                                : 'bg-gray-100 text-gray-800 rounded-tl-sm'
                            }`}
                          >
                            {message.translations?.[locale] ?? message.body}
                          </div>
                        )}
                        <span className="text-xs text-gray-300 px-1">
                          {new Date(message.createdAt).toLocaleTimeString(localeTag, {
                            hour: '2-digit',
                            minute: '2-digit',
                          })}
                        </span>
                      </div>
                    </div>
                  )
                })
              )}
              <div ref={messagesEndRef} />
            </div>

{/* Lightbox */}
            {lightboxUrl && (
              <div
                className="fixed inset-0 z-50 flex items-center justify-center bg-black/80 backdrop-blur-sm"
                onClick={() => setLightboxUrl(null)}
              >
                <div className="relative max-w-[90vw] max-h-[90vh]" onClick={(e) => e.stopPropagation()}>
                  {/* eslint-disable-next-line @next/next/no-img-element */}
                  <img
                    src={lightboxUrl}
                    alt="photo"
                    className="max-w-[90vw] max-h-[90vh] rounded-2xl object-contain shadow-2xl"
                  />
                  <button
                    onClick={() => setLightboxUrl(null)}
                    className="absolute -top-3 -right-3 w-8 h-8 bg-white rounded-full flex items-center justify-center shadow-lg hover:bg-gray-100 transition"
                    aria-label="Close"
                  >
                    <svg className="w-4 h-4 text-gray-700" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={2.5}>
                      <path strokeLinecap="round" strokeLinejoin="round" d="M6 18L18 6M6 6l12 12" />
                    </svg>
                  </button>
                  <a
                    href={lightboxUrl}
                    download
                    target="_blank"
                    rel="noreferrer"
                    className="absolute -bottom-3 -right-3 w-8 h-8 bg-white rounded-full flex items-center justify-center shadow-lg hover:bg-gray-100 transition"
                    aria-label="Download"
                    onClick={(e) => e.stopPropagation()}
                  >
                    <svg className="w-4 h-4 text-gray-700" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={2}>
                      <path strokeLinecap="round" strokeLinejoin="round" d="M4 16v2a2 2 0 002 2h12a2 2 0 002-2v-2M7 10l5 5 5-5M12 15V3" />
                    </svg>
                  </a>
                </div>
              </div>
            )}

{/* Input */}
            <div className="px-4 py-3 border-t border-gray-100">                {/* Hidden file input */}
                <input
                  ref={fileInputRef}
                  type="file"
                  accept="image/jpeg,image/png,image/gif,image/webp"
                  className="hidden"
                  onChange={(e) => {
                    const file = e.target.files?.[0]
                    if (file) uploadAndSendImage(file)
                  }}
                />              {/* Limit banners */}
              {msgLimit && msgLimit.left !== null && msgLimit.left <= 0 && (
                <div className="mb-2 flex items-center gap-2 bg-red-50 border border-red-200 rounded-xl px-3 py-2">
                  <svg className="w-4 h-4 text-red-400 shrink-0" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={2}>
                    <path strokeLinecap="round" strokeLinejoin="round" d="M12 9v2m0 4h.01M10.29 3.86L1.82 18a2 2 0 001.71 3h16.94a2 2 0 001.71-3L13.71 3.86a2 2 0 00-3.42 0z" />
                  </svg>
                  <span className="text-xs text-red-700 flex-1">{t('chat.limit_reached', 'Daily message limit reached')}</span>
                  <Link href="/pricing" className="text-xs font-medium text-red-700 underline">{t('dashboard.plan.upgrade', 'Upgrade plan')}</Link>
                </div>
              )}
              {msgLimit && msgLimit.left !== null && msgLimit.left > 0 && msgLimit.left <= Math.ceil((msgLimit.left + msgLimit.sent) * 0.2) && (
                <div className="mb-2 flex items-center gap-2 bg-amber-50 border border-amber-200 rounded-xl px-3 py-2">
                  <svg className="w-4 h-4 text-amber-400 shrink-0" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={2}>
                    <path strokeLinecap="round" strokeLinejoin="round" d="M12 9v2m0 4h.01M10.29 3.86L1.82 18a2 2 0 001.71 3h16.94a2 2 0 001.71-3L13.71 3.86a2 2 0 00-3.42 0z" />
                  </svg>
                  <span className="text-xs text-amber-700 flex-1">{t('chat.limit_warning', '{n} messages left today').replace('{n}', String(msgLimit.left))}</span>
                  <Link href="/pricing" className="text-xs font-medium text-amber-700 underline">{t('dashboard.plan.upgrade', 'Upgrade plan')}</Link>
                </div>
              )}
              <div className="flex gap-2 items-end">
                {/* Image upload button */}
                <button
                  type="button"
                  onClick={() => fileInputRef.current?.click()}
                  disabled={uploadingImage || !connected || !!(msgLimit && msgLimit.left !== null && msgLimit.left <= 0)}
                  className="h-10 w-10 text-gray-400 hover:text-gray-500 disabled:opacity-40 disabled:cursor-not-allowed flex-shrink-0 flex items-center justify-center rounded-xl hover:bg-gray-50 transition"
                  title="Send photo"
                >
                  {uploadingImage ? (
                    <svg className="w-5 h-5 animate-spin" fill="none" viewBox="0 0 24 24">
                      <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4" />
                      <path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8v8H4z" />
                    </svg>
                  ) : (
                    <svg className="w-5 h-5" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={1.8}>
                      <rect x="3" y="3" width="18" height="18" rx="3" ry="3" />
                      <circle cx="8.5" cy="8.5" r="1.5" />
                      <polyline points="21 15 16 10 5 21" />
                    </svg>
                  )}
                </button>
                <textarea
                  ref={inputRef}
                  value={input}
                  onChange={(e) => setInput(e.target.value)}
                  onKeyDown={handleKeyDown}
                  rows={1}
                  placeholder={t('chat.placeholder')}
                  disabled={!!(msgLimit && msgLimit.left !== null && msgLimit.left <= 0)}
                  className="flex-1 border border-gray-300 rounded-xl px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-blue-400 resize-none max-h-32 disabled:bg-gray-50 disabled:text-gray-400"
                  style={{ minHeight: '40px' }}
                />
                <button
                  onClick={sendMessage}
                  disabled={!input.trim() || !connected || !!(msgLimit && msgLimit.left !== null && msgLimit.left <= 0)}
                  className="h-10 w-10 bg-green-600 text-white rounded-xl hover:bg-green-700 disabled:opacity-40 disabled:cursor-not-allowed flex-shrink-0 flex items-center justify-center"
                >
                  <svg className="w-4 h-4" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={2.2}>
                    <path strokeLinecap="round" strokeLinejoin="round" d="M5 12h14M12 5l7 7-7 7" />
                  </svg>
                </button>
              </div>
            </div>
          </>
        )}
      </div>
    </div>
  )
}

export default function ChatPage() {
  return (
    <Suspense fallback={<div className="text-center py-20 text-white">...</div>}>
      <ChatPageInner />
    </Suspense>
  )
}

'use client' import { useState, useEffect, useRef, useCallback, Suspense } from 'react' import { useRouter, useSearchParams } from 'next/navigation' import Link from 'next/link' import { useSession } from '@/lib/auth' import { useLocale } from '@/context/locale' import { getChatRooms, getMessages, getDailyUsage } from '@/lib/api' import { formatShortName } from '@/lib/formatName' import { io, Socket } from 'socket.io-client' const API_URL = process.env.NEXT_PUBLIC_API_URL || 'http://localhost:4000' interface RoomEntry { room: { id: string taskId: string | null customerId: string specialistId: string createdAt: string } task: { id: string; title: string } | null otherUser: { id: string; name: string; firstName?: string; lastName?: string; image?: string } | null lastMessage?: { body: string; createdAt: string; translations?: Record | null; imageUrl?: string | null } | null } interface MessageEntry { message: { id: string roomId: string senderId: string body: string imageUrl?: string | null isRead: boolean createdAt: string translations?: Record | null } sender: { id: string; name: string; firstName?: string | null; lastName?: string | null; image?: string } | null } function ChatPageInner() { const router = useRouter() const searchParams = useSearchParams() const { data: session, isPending } = useSession() const { t, locale } = useLocale() const [rooms, setRooms] = useState([]) const [loadingRooms, setLoadingRooms] = useState(true) const [activeRoomId, setActiveRoomId] = useState(null) const [messages, setMessages] = useState([]) const [loadingMessages, setLoadingMessages] = useState(false) const [input, setInput] = useState('') const [connected, setConnected] = useState(false) const [msgLimit, setMsgLimit] = useState<{ left: number | null; sent: number } | null>(null) const [uploadingImage, setUploadingImage] = useState(false) const [lightboxUrl, setLightboxUrl] = useState(null) const socketRef = useRef(null) const messagesEndRef = useRef(null) const inputRef = useRef(null) const fileInputRef = useRef(null) useEffect(() => { if (!isPending && !session) router.push('/login') }, [session, isPending]) // Load chat rooms useEffect(() => { if (!session) return getChatRooms() .then((data) => { setRooms(data) const roomParam = searchParams.get('room') if (roomParam) setActiveRoomId(roomParam) }) .catch((err) => console.error('[chat] getChatRooms error:', err)) .finally(() => setLoadingRooms(false)) getDailyUsage() .then((u) => setMsgLimit({ left: u.messagesLeft, sent: u.messagesSent })) .catch((err) => console.error('[chat] getDailyUsage error:', err)) }, [session]) // Setup Socket.IO useEffect(() => { if (!session) return const socket = io(API_URL, { withCredentials: true, transports: ['websocket', 'polling'], }) socketRef.current = socket socket.on('connect', () => setConnected(true)) socket.on('disconnect', () => setConnected(false)) socket.on('new_message', (msg: MessageEntry['message']) => { setMessages((prev) => { // avoid duplicate if we get it back from our own send if (prev.some((m) => m.message.id === msg.id)) return prev // sender info: only known for current user; others show placeholder (? avatar) const sender = session.user && session.user.id === msg.senderId ? { id: session.user.id, name: session.user.name ?? '', image: session.user.image ?? undefined } : null return [ ...prev, { message: msg, sender }, ] }) // Update lastMessage in rooms list and bubble room to top setRooms((prev) => { const updated = prev.map((r) => r.room.id === msg.roomId ? { ...r, lastMessage: { body: msg.body, createdAt: msg.createdAt, translations: msg.translations ?? null, imageUrl: msg.imageUrl ?? null } } : r ) return updated.sort((a, b) => { const aTime = a.lastMessage?.createdAt ? new Date(a.lastMessage.createdAt).getTime() : new Date(a.room.createdAt).getTime() const bTime = b.lastMessage?.createdAt ? new Date(b.lastMessage.createdAt).getTime() : new Date(b.room.createdAt).getTime() return bTime - aTime }) }) }) socket.on('message_translated', ({ id, roomId, translations }: { id: string; roomId?: string; translations: Record }) => { setMessages((prev) => prev.map((m) => m.message.id === id ? { ...m, message: { ...m.message, translations } } : m, ), ) // Also update lastMessage in sidebar if this is the last message of that room if (roomId) { setRooms((prev) => prev.map((r) => r.room.id === roomId && r.lastMessage ? { ...r, lastMessage: { ...r.lastMessage, translations } } : r, ), ) } }) return () => { socket.disconnect() socketRef.current = null } }, [session]) // Join room and load messages when activeRoomId changes useEffect(() => { if (!activeRoomId) return setLoadingMessages(true) setMessages([]) getMessages(activeRoomId) .then(setMessages) .catch((err) => console.error('[chat] getMessages error:', err)) .finally(() => setLoadingMessages(false)) socketRef.current?.emit('join_room', activeRoomId) socketRef.current?.emit('mark_read', activeRoomId) }, [activeRoomId]) // Focus input when active room changes useEffect(() => { if (!activeRoomId) return const t = setTimeout(() => inputRef.current?.focus(), 50) return () => clearTimeout(t) }, [activeRoomId]) // Auto-scroll on new messages (within container only) useEffect(() => { messagesEndRef.current?.scrollIntoView({ behavior: 'smooth', block: 'nearest' }) }, [messages]) // Close lightbox on Escape useEffect(() => { const onKey = (e: KeyboardEvent) => { if (e.key === 'Escape') setLightboxUrl(null) } window.addEventListener('keydown', onKey) return () => window.removeEventListener('keydown', onKey) }, []) const sendMessage = useCallback(() => { const body = input.trim() if (!body || !activeRoomId || !socketRef.current) return if (msgLimit && msgLimit.left !== null && msgLimit.left <= 0) return socketRef.current.emit('send_message', { roomId: activeRoomId, body, locale }) setInput('') // decrement local counter setMsgLimit((prev) => prev && prev.left !== null ? { ...prev, left: prev.left - 1, sent: prev.sent + 1 } : prev) }, [input, activeRoomId, msgLimit]) const uploadAndSendImage = useCallback(async (file: File) => { if (!activeRoomId || !socketRef.current) return setUploadingImage(true) try { const formData = new FormData() formData.append('file', file) const res = await fetch(`${API_URL}/api/uploads`, { method: 'POST', credentials: 'include', body: formData, }) if (!res.ok) throw new Error('Upload failed') const { url } = await res.json() as { url: string } socketRef.current.emit('send_message', { roomId: activeRoomId, body: '', imageUrl: url, locale }) } catch (_) { // silent } finally { setUploadingImage(false) if (fileInputRef.current) fileInputRef.current.value = '' } }, [activeRoomId, locale]) const handleKeyDown = (e: React.KeyboardEvent) => { if (e.key === 'Enter' && !e.shiftKey) { e.preventDefault() sendMessage() } } const LOCALE_TAG: Record = { ru: 'ru-RU', en: 'en-US', el: 'el-GR' } const localeTag = LOCALE_TAG[locale] ?? 'el-GR' function fmtMsgTime(iso: string): string { const d = new Date(iso) const now = new Date() const diffMin = Math.floor((now.getTime() - d.getTime()) / 60000) if (diffMin < 1) return t('chat.just_now') if (diffMin < 60) return `${diffMin}${t('chat.min_ago')}` if (d.toDateString() === now.toDateString()) return d.toLocaleTimeString(localeTag, { hour: '2-digit', minute: '2-digit' }) return d.toLocaleDateString(localeTag, { day: '2-digit', month: '2-digit' }) } if (isPending || loadingRooms) { return

{t('common.loading')}

} const activeRoom = rooms.find((r) => r.room.id === activeRoomId) const currentUserId = session?.user?.id return (

{/* Rooms sidebar */}

{t('nav.chat')}

{connected ? t('chat.connected') : t('chat.disconnected')}

{rooms.length === 0 ? (

{t('chat.no_rooms')}

) : ( rooms.map(({ room, task, otherUser, lastMessage }) => { const roomLabel = task?.title ?? (formatShortName(otherUser?.firstName, otherUser?.lastName, otherUser?.name) || t('chat.direct_chat')) const roomSub = task ? (formatShortName(otherUser?.firstName, otherUser?.lastName, otherUser?.name) || '') : t('chat.direct_chat') return ( ) }) )}

{/* Messages panel */}

{!activeRoomId ? (

{t('chat.select')}

) : ( <> {/* Header */}

{activeRoom?.task?.title ?? (formatShortName(activeRoom?.otherUser?.firstName, activeRoom?.otherUser?.lastName, activeRoom?.otherUser?.name) || t('chat.direct_chat'))}

{/* Task banner */} {activeRoom?.task && (

{t('chat.linked_task')}

{activeRoom.task.title}

)} {/* Messages */}

{loadingMessages ? (

{t('common.loading')}

) : messages.length === 0 ? (

{t('chat.no_messages')}

) : ( messages.map(({ message, sender }) => { const isMe = message.senderId === currentUserId return (

{/* Avatar */}

{sender?.image ? ( {sender.name}

) : ( sender?.name?.[0]?.toUpperCase() ?? '?' )}

{/* Bubble */}

{!isMe && ( {formatShortName(sender?.firstName, sender?.lastName, sender?.name)} )} {message.imageUrl ? ( ) : (

{message.translations?.[locale] ?? message.body}

)} {new Date(message.createdAt).toLocaleTimeString(localeTag, { hour: '2-digit', minute: '2-digit', })}

) }) )}

{/* Lightbox */} {lightboxUrl && (

setLightboxUrl(null)} >

e.stopPropagation()}> {/* eslint-disable-next-line @next/next/no-img-element */}

e.stopPropagation()} >

)} {/* Input */}

{/* Hidden file input */} { const file = e.target.files?.[0] if (file) uploadAndSendImage(file) }} /> {/* Limit banners */} {msgLimit && msgLimit.left !== null && msgLimit.left <= 0 && (

{t('chat.limit_reached', 'Daily message limit reached')} {t('dashboard.plan.upgrade', 'Upgrade plan')}

)} {msgLimit && msgLimit.left !== null && msgLimit.left > 0 && msgLimit.left <= Math.ceil((msgLimit.left + msgLimit.sent) * 0.2) && (

{t('chat.limit_warning', '{n} messages left today').replace('{n}', String(msgLimit.left))} {t('dashboard.plan.upgrade', 'Upgrade plan')}

)}

{/* Image upload button */}

setInput(e.target.value)}
                  onKeyDown={handleKeyDown}
                  rows={1}
                  placeholder={t('chat.placeholder')}
                  disabled={!!(msgLimit && msgLimit.left !== null && msgLimit.left <= 0)}
                  className="flex-1 border border-gray-300 rounded-xl px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-blue-400 resize-none max-h-32 disabled:bg-gray-50 disabled:text-gray-400"
                  style={{ minHeight: '40px' }}
                />
                <button
                  onClick={sendMessage}
                  disabled={!input.trim() || !connected || !!(msgLimit && msgLimit.left !== null && msgLimit.left <= 0)}
                  className="h-10 w-10 bg-green-600 text-white rounded-xl hover:bg-green-700 disabled:opacity-40 disabled:cursor-not-allowed flex-shrink-0 flex items-center justify-center"
                >
                  <svg className="w-4 h-4" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={2.2}>
                    <path strokeLinecap="round" strokeLinejoin="round" d="M5 12h14M12 5l7 7-7 7" />
                  </svg>
                </button>
              </div>
            </div>
          </>
        )}
      </div>
    </div>
  )
}

export default function ChatPage() {
  return (
    <Suspense fallback={<div className="text-center py-20 text-white">...</div>}>
      <ChatPageInner />
    </Suspense>
  )
}