404 lines
15 KiB
TypeScript
404 lines
15 KiB
TypeScript
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"use client";
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import { useState, useEffect, useRef } from 'react';
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import { Job, Message } from '../types';
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interface ChatScreenProps {
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job: Job;
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candidateName: string;
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linkId: string;
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isTestMode?: boolean;
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mandatoryAnswers?: string[];
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onComplete: () => void;
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}
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export default function ChatScreen({ job, candidateName, linkId, isTestMode = false, mandatoryAnswers = [], onComplete }: ChatScreenProps) {
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const [messages, setMessages] = useState<Message[]>([]);
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const [inputMessage, setInputMessage] = useState('');
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const [isLoading, setIsLoading] = useState(false);
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const [isInitializing, setIsInitializing] = useState(true);
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const [error, setError] = useState('');
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const [isTyping, setIsTyping] = useState(false);
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const [typingMessage, setTypingMessage] = useState('');
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const messagesEndRef = useRef<HTMLDivElement>(null);
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const scrollToBottom = () => {
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messagesEndRef.current?.scrollIntoView({ behavior: "smooth" });
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};
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// Build conversation history from mandatory answers for test mode
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const buildConversationHistory = () => {
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if (!isTestMode || !mandatoryAnswers.length) return [];
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const history: Message[] = [];
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const mandatoryQuestions = job.interview_questions || [];
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for (let i = 0; i < mandatoryQuestions.length; i++) {
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if (mandatoryAnswers[i]) {
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history.push({
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id: `q-${i + 1}`,
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sender: 'ai',
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content: `Question ${i + 1}: ${mandatoryQuestions[i]}`,
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timestamp: new Date()
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});
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history.push({
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id: `a-${i + 1}`,
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sender: 'user',
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content: mandatoryAnswers[i],
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timestamp: new Date()
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});
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}
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}
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return history;
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};
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useEffect(() => {
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scrollToBottom();
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}, [messages, typingMessage]);
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// Typing effect function
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const simulateTyping = (text: string, onComplete: (finalText: string) => void) => {
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setIsTyping(true);
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setTypingMessage('');
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let currentIndex = 0;
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const typingSpeed = 20 + Math.random() * 30; // Random speed between 20-50ms per character
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const typeNextCharacter = () => {
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if (currentIndex < text.length) {
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setTypingMessage(text.slice(0, currentIndex + 1));
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currentIndex++;
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setTimeout(typeNextCharacter, typingSpeed);
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} else {
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setIsTyping(false);
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onComplete(text);
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}
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};
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// Small delay before starting to type
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setTimeout(typeNextCharacter, 500);
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};
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useEffect(() => {
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initializeChat();
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}, []);
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const initializeChat = async () => {
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try {
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setIsInitializing(true);
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// Send initial data to AI endpoint
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const response = await fetch(`${process.env.NEXT_PUBLIC_API_URL}/rest/ai/start-interview${isTestMode ? '?test=true' : ''}`, {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json',
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},
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body: JSON.stringify({
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candidateName,
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job: job,
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linkId,
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test: isTestMode
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})
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});
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if (response.ok) {
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const data = await response.json();
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// Use typing effect for AI's initial message
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const aiMessage = data.message || "Hello! I'm your evaluation agent. Let's begin the interview for the " + job.title + " position. Please tell me about yourself and your interest in this role.";
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simulateTyping(aiMessage, (finalText) => {
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setMessages([{
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id: '1',
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content: finalText,
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sender: 'ai',
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timestamp: new Date()
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}]);
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});
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} else {
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throw new Error('Failed to initialize chat');
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}
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} catch (error) {
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console.error('Error initializing chat:', error);
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setError('Failed to start the interview. Please try again.');
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// Add fallback message with typing effect
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const fallbackMessage = "Hello! I'm your evaluation agent. Let's begin the interview for the " + job.title + " position. Please tell me about yourself and your interest in this role.";
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simulateTyping(fallbackMessage, (finalText) => {
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setMessages([{
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id: '1',
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content: finalText,
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sender: 'ai',
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timestamp: new Date()
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}]);
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});
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} finally {
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setIsInitializing(false);
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}
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};
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const sendMessage = async () => {
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if (!inputMessage.trim() || isLoading) return;
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const userMessage: Message = {
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id: Date.now().toString(),
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content: inputMessage.trim(),
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sender: 'user',
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timestamp: new Date()
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};
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setMessages(prev => [...prev, userMessage]);
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setInputMessage('');
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setIsLoading(true);
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try {
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// Build conversation history for test mode
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const conversationHistory = isTestMode ?
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[...buildConversationHistory(), ...messages.filter(msg => msg.content && msg.content !== 'undefined')] :
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messages;
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const response = await fetch(`${process.env.NEXT_PUBLIC_API_URL}/rest/ai/chat${isTestMode ? '?test=true' : ''}`, {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json',
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},
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body: JSON.stringify({
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message: userMessage.content,
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candidateName,
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job: job,
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linkId,
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conversationHistory: conversationHistory.map(msg => ({
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sender: msg.sender === 'user' ? 'candidate' : msg.sender,
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message: msg.content,
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timestamp: msg.timestamp
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})),
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test: isTestMode
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})
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});
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if (response.ok) {
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const data = await response.json();
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// Use typing effect for AI response
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const aiResponseText = data.message || "Thank you for your response. Let me ask you another question...";
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simulateTyping(aiResponseText, (finalText) => {
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const aiMessage: Message = {
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id: (Date.now() + 1).toString(),
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content: finalText,
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sender: 'ai',
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timestamp: new Date()
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};
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setMessages(prev => [...prev, aiMessage]);
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// Check if interview is complete
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if (data.isComplete) {
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setTimeout(() => {
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onComplete();
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}, 2000);
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}
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});
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} else {
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throw new Error('Failed to send message');
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}
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} catch (error) {
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console.error('Error sending message:', error);
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setError('Failed to send message. Please try again.');
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} finally {
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setIsLoading(false);
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}
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};
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const handleKeyPress = (e: React.KeyboardEvent) => {
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if (e.key === 'Enter' && !e.shiftKey) {
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e.preventDefault();
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sendMessage();
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}
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};
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const formatTime = (date: Date) => {
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return date.toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' });
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};
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if (isInitializing) {
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return (
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<div className="min-h-screen bg-gray-50 flex items-center justify-center">
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<div className="text-center">
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<div className="animate-spin rounded-full h-12 w-12 border-b-2 border-blue-600 mx-auto"></div>
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<p className="mt-4 text-gray-600">Initializing interview...</p>
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</div>
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</div>
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);
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}
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return (
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<div className="min-h-screen bg-gray-50 flex flex-col">
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{/* Header */}
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<div className="bg-white shadow-sm border-b px-4 py-4">
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<div className="max-w-4xl mx-auto">
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<div className="flex items-center justify-between">
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<div>
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<h1 className="text-xl font-semibold text-gray-900">
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Interview: {job.title}
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</h1>
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<p className="text-sm text-gray-600">
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Candidate: {candidateName} • {job.location || "Remote"}
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</p>
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</div>
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<div className="flex items-center space-x-2">
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<div className="w-3 h-3 bg-green-500 rounded-full"></div>
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<span className="text-sm text-gray-500">AI Agent Online</span>
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</div>
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</div>
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</div>
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</div>
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{/* Error Banner */}
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{error && (
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<div className="bg-red-50 border-b border-red-200 px-4 py-3">
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<div className="max-w-4xl mx-auto">
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<div className="flex items-center space-x-2">
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<svg className="w-5 h-5 text-red-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
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<path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 8v4m0 4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z" />
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</svg>
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<span className="text-red-800">{error}</span>
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<button
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onClick={() => setError('')}
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className="ml-auto text-red-600 hover:text-red-800"
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>
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<svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
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<path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M6 18L18 6M6 6l12 12" />
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</svg>
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</button>
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</div>
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</div>
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</div>
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)}
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{/* Messages */}
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<div className="flex-1 overflow-y-auto px-4 py-6">
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<div className="max-w-4xl mx-auto space-y-6">
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{messages.map((message) => (
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<div
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key={message.id}
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className={`flex ${message.sender === 'user' ? 'justify-end' : 'justify-start'}`}
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>
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<div
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className={`max-w-3xl px-6 py-4 rounded-2xl ${
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message.sender === 'user'
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? 'bg-blue-600 text-white'
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: 'bg-white text-gray-900 border border-gray-200'
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}`}
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>
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<div className="flex items-start space-x-3">
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{message.sender === 'ai' && (
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<div className="w-8 h-8 bg-blue-100 rounded-full flex items-center justify-center flex-shrink-0">
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<svg className="w-4 h-4 text-blue-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
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<path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9.75 17L9 20l-1 1h8l-1-1-.75-3M3 13h18M5 17h14a2 2 0 002-2V5a2 2 0 00-2-2H5a2 2 0 00-2 2v10a2 2 0 002 2z" />
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</svg>
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</div>
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)}
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<div className="flex-1">
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<p className="whitespace-pre-wrap">{message.content}</p>
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<p className={`text-xs mt-2 ${
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message.sender === 'user' ? 'text-blue-100' : 'text-gray-500'
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}`}>
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{formatTime(message.timestamp)}
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</p>
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</div>
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{message.sender === 'user' && (
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<div className="w-8 h-8 bg-blue-500 rounded-full flex items-center justify-center flex-shrink-0">
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<svg className="w-4 h-4 text-white" fill="none" stroke="currentColor" viewBox="0 0 24 24">
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<path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M16 7a4 4 0 11-8 0 4 4 0 018 0zM12 14a7 7 0 00-7 7h14a7 7 0 00-7-7z" />
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</svg>
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</div>
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)}
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</div>
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</div>
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</div>
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))}
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{isLoading && !isTyping && (
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<div className="flex justify-start">
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<div className="bg-white text-gray-900 border border-gray-200 rounded-2xl px-6 py-4">
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<div className="flex items-center space-x-3">
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<div className="w-8 h-8 bg-blue-100 rounded-full flex items-center justify-center">
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<svg className="w-4 h-4 text-blue-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
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<path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9.75 17L9 20l-1 1h8l-1-1-.75-3M3 13h18M5 17h14a2 2 0 002-2V5a2 2 0 00-2-2H5a2 2 0 00-2 2v10a2 2 0 002 2z" />
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</svg>
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</div>
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<div className="flex space-x-1">
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<div className="w-2 h-2 bg-gray-400 rounded-full animate-bounce"></div>
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<div className="w-2 h-2 bg-gray-400 rounded-full animate-bounce" style={{ animationDelay: '0.1s' }}></div>
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<div className="w-2 h-2 bg-gray-400 rounded-full animate-bounce" style={{ animationDelay: '0.2s' }}></div>
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</div>
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</div>
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</div>
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</div>
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)}
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{isTyping && (
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<div className="flex justify-start">
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<div className="bg-white text-gray-900 border border-gray-200 rounded-2xl px-6 py-4">
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<div className="flex items-start space-x-3">
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<div className="w-8 h-8 bg-blue-100 rounded-full flex items-center justify-center flex-shrink-0">
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<svg className="w-4 h-4 text-blue-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
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<path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9.75 17L9 20l-1 1h8l-1-1-.75-3M3 13h18M5 17h14a2 2 0 002-2V5a2 2 0 00-2-2H5a2 2 0 00-2 2v10a2 2 0 002 2z" />
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</svg>
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</div>
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<div className="flex-1">
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<p className="whitespace-pre-wrap">{typingMessage}</p>
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<div className="flex items-center mt-2">
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<div className="w-2 h-2 bg-blue-500 rounded-full animate-pulse"></div>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
)}
|
||
|
|
|
||
|
|
<div ref={messagesEndRef} />
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
{/* Input */}
|
||
|
|
<div className="bg-white border-t px-4 py-4">
|
||
|
|
<div className="max-w-4xl mx-auto">
|
||
|
|
<div className="flex space-x-4">
|
||
|
|
<div className="flex-1">
|
||
|
|
<textarea
|
||
|
|
value={inputMessage}
|
||
|
|
onChange={(e) => setInputMessage(e.target.value)}
|
||
|
|
onKeyPress={handleKeyPress}
|
||
|
|
placeholder="Type your response here..."
|
||
|
|
className="w-full px-4 py-3 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 resize-none text-gray-900 placeholder-gray-500 bg-white"
|
||
|
|
rows={3}
|
||
|
|
disabled={isLoading || isTyping}
|
||
|
|
/>
|
||
|
|
</div>
|
||
|
|
<button
|
||
|
|
onClick={sendMessage}
|
||
|
|
disabled={!inputMessage.trim() || isLoading || isTyping}
|
||
|
|
className="px-6 py-3 bg-blue-600 text-white rounded-lg hover:bg-blue-700 focus:outline-none focus:ring-2 focus:ring-blue-500 disabled:opacity-50 disabled:cursor-not-allowed transition-colors"
|
||
|
|
>
|
||
|
|
{isLoading ? (
|
||
|
|
<div className="w-5 h-5 border-2 border-white border-t-transparent rounded-full animate-spin"></div>
|
||
|
|
) : (
|
||
|
|
<svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
|
||
|
|
<path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 19l9 2-9-18-9 18 9-2zm0 0v-8" />
|
||
|
|
</svg>
|
||
|
|
)}
|
||
|
|
</button>
|
||
|
|
</div>
|
||
|
|
<p className="text-xs text-gray-500 mt-2">
|
||
|
|
Press Enter to send, Shift+Enter for new line
|
||
|
|
</p>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
);
|
||
|
|
}
|