Spaces:
Sleeping
Sleeping
File size: 6,079 Bytes
f97e4ec | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 | import { useState, useCallback, useRef } from 'react';
import type { StreamEvent } from '../types';
const SESSION_ID = 'interview_' + Math.random().toString(36).substring(2, 10);
export interface InterviewState {
isActive: boolean;
topic: string;
round: number;
maxRounds: number;
currentQuestion: string;
keypointCards: { number: number; keypoints: string[] }[];
designDoc: string | null;
isComplete: boolean;
}
function speakText(text: string): Promise<void> {
return new Promise((resolve) => {
try {
fetch('/tts', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ text: text.slice(0, 600) }),
})
.then(res => res.blob())
.then(blob => {
const url = URL.createObjectURL(blob);
const audio = new Audio(url);
audio.onended = () => { URL.revokeObjectURL(url); resolve(); };
audio.onerror = () => { URL.revokeObjectURL(url); resolve(); };
audio.play().catch(resolve);
})
.catch(resolve);
} catch { resolve(); }
});
}
export function useDesignInterview() {
const [state, setState] = useState<InterviewState>({
isActive: false,
topic: '',
round: 0,
maxRounds: 5,
currentQuestion: '',
keypointCards: [],
designDoc: null,
isComplete: false,
});
const isSpeakingRef = useRef(false);
const isLoadingRef = useRef(false);
const startInterview = useCallback(async (topic: string) => {
if (isLoadingRef.current) return;
isLoadingRef.current = true;
setState({
isActive: true,
topic,
round: 0,
maxRounds: 5,
currentQuestion: '',
keypointCards: [],
designDoc: null,
isComplete: false,
});
try {
const res = await fetch('/design-interview', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ session_id: SESSION_ID, message: topic }),
});
if (!res.body) throw new Error('No body');
const reader = res.body.getReader();
const decoder = new TextDecoder();
let buf = '';
while (true) {
const { done, value } = await reader.read();
if (done) break;
buf += decoder.decode(value, { stream: true });
const lines = buf.split('\n');
buf = lines.pop() || '';
for (const line of lines) {
if (!line.startsWith('data: ')) continue;
const raw = line.slice(6).trim();
if (!raw) continue;
try {
const ev: StreamEvent = JSON.parse(raw);
if (ev.type === 'question' && ev.text) {
setState(prev => ({
...prev,
currentQuestion: ev.text || '',
round: ev.number || prev.round,
maxRounds: ev.total || 5,
}));
isSpeakingRef.current = true;
await speakText(ev.text);
isSpeakingRef.current = false;
}
} catch { /* */ }
}
}
} catch { /* */ }
isLoadingRef.current = false;
}, []);
const sendAnswer = useCallback(async (answer: string) => {
if (isLoadingRef.current || !answer.trim()) return;
isLoadingRef.current = true;
try {
const res = await fetch('/design-interview', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ session_id: SESSION_ID, message: answer }),
});
if (!res.body) throw new Error('No body');
const reader = res.body.getReader();
const decoder = new TextDecoder();
let buf = '';
while (true) {
const { done, value } = await reader.read();
if (done) break;
buf += decoder.decode(value, { stream: true });
const lines = buf.split('\n');
buf = lines.pop() || '';
for (const line of lines) {
if (!line.startsWith('data: ')) continue;
const raw = line.slice(6).trim();
if (!raw) continue;
try {
const ev: StreamEvent = JSON.parse(raw);
switch (ev.type) {
case 'keypoint':
if (ev.keypoints && Array.isArray(ev.keypoints)) {
setState(prev => ({
...prev,
keypointCards: [...prev.keypointCards, { number: ev.number || prev.keypointCards.length + 1, keypoints: ev.keypoints as string[] }],
}));
}
break;
case 'question':
if (ev.text) {
setState(prev => ({
...prev,
currentQuestion: ev.text || '',
round: ev.number || prev.round,
}));
isSpeakingRef.current = true;
await speakText(ev.text);
isSpeakingRef.current = false;
}
break;
case 'mode_switch':
break;
case 'design_doc':
if (ev.text) {
setState(prev => ({
...prev,
designDoc: ev.text || null,
isComplete: true,
isActive: false,
}));
isSpeakingRef.current = true;
await speakText('The design document is ready. Switching to text mode.');
isSpeakingRef.current = false;
}
break;
}
} catch { /* */ }
}
}
} catch { /* */ }
isLoadingRef.current = false;
}, []);
const reset = useCallback(() => {
setState({
isActive: false,
topic: '',
round: 0,
maxRounds: 5,
currentQuestion: '',
keypointCards: [],
designDoc: null,
isComplete: false,
});
}, []);
return { ...state, startInterview, sendAnswer, reset, isLoading: isLoadingRef.current, isSpeaking: isSpeakingRef.current, sessionId: SESSION_ID };
}
|