All files / src/components/features/support/ChatbotWidget ChatbotWindow.tsx

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'use client';
 
/**
 * ChatbotWindow - Main chat window component
 */
 
import React, { useState, useRef, useEffect, useCallback } from 'react';
import { clientLogger } from '@/lib/logging/clientLogger';
import ChatMessage from './ChatMessage';
import ChatInput from './ChatInput';
import QuickActions from './QuickActions';
import { ChatbotMessage, ChatbotQuickAction, SupportArticle } from '@/types/support';
import { CHATBOT } from '@/constants/support';
import { Icon } from '@/components/ui/icons';
 
export interface ChatbotWindowProps {
  /** Close handler */
  onClose: () => void;
}
 
export default function ChatbotWindow({ onClose }: ChatbotWindowProps) {
  const [messages, setMessages] = useState<ChatbotMessage[]>([]);
  const [isLoading, setIsLoading] = useState(false);
  const [showQuickActions, setShowQuickActions] = useState(true);
  const messagesEndRef = useRef<HTMLDivElement>(null);

  // Scroll to bottom when messages change
  const scrollToBottom = useCallback(() => {
    messagesEndRef.current?.scrollIntoView({ behavior: 'smooth' });
  }, []);

  useEffect(() => {
    scrollToBottom();
  }, [messages, scrollToBottom]);

  // Load welcome message on mount
  useEffect(() => {
    const loadWelcome = async () => {
      try {
        const response = await fetch('/api/support/chatbot', {
          method: 'POST',
          headers: { 'Content-Type': 'application/json' },
          body: JSON.stringify({ welcome: true })});
        const data = await response.json();

        if (data.success) {
          const welcomeMessage: ChatbotMessage = {
            id: 'welcome',
            type: 'bot',
            content: data.data.message,
            timestamp: new Date(),
            quickActions: data.data.quickActions};
          setMessages([welcomeMessage]);
        }
      } catch (error) {
        clientLogger.error('Failed to load welcome message', error instanceof Error ? error : new Error(String(error)));
        // Use fallback welcome message
        setMessages([
          {
            id: 'welcome',
            type: 'bot',
            content: CHATBOT.welcomeMessage,
            timestamp: new Date()},
        ]);
      }
    };

    loadWelcome();
  }, []);

  const handleSendMessage = async (content: string) => {
    // Add user message
    const userMessage: ChatbotMessage = {
      id: `user-${Date.now()}`,
      type: 'user',
      content,
      timestamp: new Date()};
    setMessages((prev) => [...prev, userMessage]);
    setShowQuickActions(false);
    setIsLoading(true);

    try {
      const response = await fetch('/api/support/chatbot', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ message: content })});
      const data = await response.json();

      if (data.success) {
        const botMessage: ChatbotMessage = {
          id: `bot-${Date.now()}`,
          type: 'bot',
          content: data.data.message,
          timestamp: new Date(),
          suggestedArticles: data.data.suggestedArticles,
          quickActions: data.data.quickActions};
        setMessages((prev) => [...prev, botMessage]);
      } else {
        throw new Error(data.error || 'Failed to get response');
      }
    } catch (error) {
      clientLogger.error('Chatbot error', error instanceof Error ? error : new Error(String(error)), { userMessage: content });
      const errorMessage: ChatbotMessage = {
        id: `error-${Date.now()}`,
        type: 'bot',
        content: 'Sorry, I encountered an error. Please try again or create a support ticket.',
        timestamp: new Date(),
        quickActions: [{ label: 'Create Ticket', action: 'create_ticket' }]};
      setMessages((prev) => [...prev, errorMessage]);
    } finally {
      setIsLoading(false);
    }
  };

  const handleQuickAction = (action: ChatbotQuickAction) => {
    switch (action.action) {
      case 'create_ticket':
        window.location.href = '/support/tickets/new';
        break;
      case 'track_order':
        window.location.href = '/account/orders';
        break;
      case 'view_faq':
        window.location.href = '/support/articles';
        break;
      case 'contact_agent':
        window.location.href = '/support/tickets/new';
        break;
      default:
        // Send as message if unknown action
        handleSendMessage(action.label);
    }
  };

  const handleArticleClick = (article: SupportArticle) => {
    window.location.href = `/support/articles/${article.slug}`;
  };

  return (
    <div
      className="
        absolute bottom-16 right-0
        w-[350px] sm:w-[400px] h-[500px]
        bg-white rounded-lg shadow-2xl
        flex flex-col
        border border-gray-200
        overflow-hidden
      "
    >
      {/* Header */}
      <div className="bg-blue-600 text-white px-4 py-3 flex items-center justify-between">
        <div className="flex items-center gap-2">
          <div className="w-2 h-2 bg-green-400 rounded-full" />
          <span className="font-medium">Support Assistant</span>
        </div>
        <button
          type="button"
          onClick={onClose}
          className="p-1 hover:bg-blue-700 rounded transition-colors"
          aria-label="Close chat"
        >
          <Icon name="close" size={20} />
        </button>
      </div>

      {/* Messages */}
      <div className="flex-1 overflow-y-auto p-4 space-y-4 bg-gray-50">
        {messages.map((message) => (
          <ChatMessage
            key={message.id}
            message={message}
            onQuickAction={handleQuickAction}
            onArticleClick={handleArticleClick}
          />
        ))}

        {isLoading && (
          <div className="flex items-center gap-2 text-gray-500">
            <div className="flex space-x-1">
              <div className="w-2 h-2 bg-gray-400 rounded-full animate-bounce" />
              <div
                className="w-2 h-2 bg-gray-400 rounded-full animate-bounce"
                style={{ animationDelay: '0.1s' }}
              />
              <div
                className="w-2 h-2 bg-gray-400 rounded-full animate-bounce"
                style={{ animationDelay: '0.2s' }}
              />
            </div>
            <span className="text-sm">Typing...</span>
          </div>
        )}

        <div ref={messagesEndRef} />
      </div>

      {/* Quick Actions (shown initially) */}
      {showQuickActions && messages.length > 0 && messages[0].quickActions && (
        <QuickActions
          actions={messages[0].quickActions}
          onAction={handleQuickAction}
        />
      )}

      {/* Input */}
      <ChatInput onSend={handleSendMessage} disabled={isLoading} />
    </div>
  );
}