Spaces:
Sleeping
Sleeping
File size: 7,713 Bytes
a706099 63428e7 a706099 f444dc0 8066d07 63428e7 a706099 98d2bd7 a706099 98d2bd7 a706099 f444dc0 63428e7 f444dc0 63428e7 f444dc0 63428e7 f444dc0 63428e7 f444dc0 63428e7 f444dc0 a706099 f444dc0 a706099 8d0b379 f444dc0 8d0b379 f444dc0 63428e7 8d0b379 a706099 8d0b379 a706099 8d0b379 f444dc0 63428e7 a706099 |
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 |
import { useState } from 'react';
export const useChunkNavigation = (documentData) => {
const [chunkStates, setChunkStates] = useState({});
const [currentChunkIndex, setCurrentChunkIndex] = useState(0);
const [chunkExpanded, setChunkExpanded] = useState(true);
const [globalChatHistory, setGlobalChatHistory] = useState([]);
const [showChat, setShowChat] = useState(true);
const [loadingChunkIndex, setLoadingChunkIndex] = useState(null);
const streamResponse = async (requestBody, isAutomated, nextChunkIndex) => {
const targetChunkIndex = nextChunkIndex || currentChunkIndex;
setLoadingChunkIndex(targetChunkIndex);
try {
const response = await fetch('/api/chat/stream', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: requestBody
});
const reader = await response.body.getReader()
let shouldStop = false;
const parsedBody = JSON.parse(requestBody);
let localMessages = [...parsedBody.messages];
const createTempId = () => `assistant_${Date.now()}_${Math.random().toString(36).slice(2)}`;
let assistantId = null;
// SSE read buffer
let sseBuffer = '';
// Streaming smoothness buffer
let textBuffer = '';
let frameScheduled = false;
const flushBuffer = (isFinal = false) => {
if (!assistantId) return;
const lastMsg = localMessages[localMessages.length - 1];
if (lastMsg.id === assistantId) {
// Append buffered text
lastMsg.content += textBuffer;
textBuffer = '';
}
updateGlobalChatHistory([...localMessages]);
};
const scheduleFlush = () => {
if (!frameScheduled) {
frameScheduled = true;
requestAnimationFrame(() => {
flushBuffer();
frameScheduled = false;
});
}
};
while (!shouldStop) {
const { done, value } = await reader.read();
if (done) break;
sseBuffer += new TextDecoder().decode(value);
const parts = sseBuffer.split('\n\n');
sseBuffer = parts.pop(); // keep last partial
for (const part of parts) {
if (!part.startsWith('data:')) continue;
const jsonStr = part.slice(5).trim();
if (!jsonStr) continue;
let parsed;
try {
parsed = JSON.parse(jsonStr);
} catch (err) {
console.warn('Could not JSON.parse stream chunk', jsonStr);
continue;
}
if (parsed.error) {
console.error('streaming error', parsed.error);
shouldStop = true;
break;
}
if (parsed.done) {
shouldStop = true;
flushBuffer(true); // final flush, remove cursor
break;
}
const delta = typeof parsed === 'string' ? parsed : parsed?.content ?? '';
if (!assistantId) {
assistantId = createTempId();
localMessages.push({
id: assistantId,
role: 'assistant',
content: delta,
chunkIndex: nextChunkIndex ? nextChunkIndex : currentChunkIndex
});
} else {
textBuffer += delta;
}
// Schedule smooth UI update
scheduleFlush();
}
}
} catch (error) {
console.error(error);
addMessageToChunk(
{ role: 'assistant', content: 'Sorry, something went wrong. Please try again.' },
currentChunkIndex
);
} finally {
setLoadingChunkIndex(null);
}
};
const goToNextChunk = () => {
if (documentData && currentChunkIndex < documentData.chunks.length - 1) {
setCurrentChunkIndex(currentChunkIndex + 1);
setChunkExpanded(true);
}
};
const goToPrevChunk = () => {
if (currentChunkIndex > 0) {
setCurrentChunkIndex(currentChunkIndex - 1);
setChunkExpanded(true);
}
};
const sendAutomatedMessage = async (action) => {
if (!documentData || currentChunkIndex >= documentData.chunks.length - 1) return;
const nextChunkIndex = currentChunkIndex + 1;
setLoadingChunkIndex(nextChunkIndex);
const nextChunk = documentData.chunks[nextChunkIndex];
// Update chunk index immediately for UI feedback
setCurrentChunkIndex(nextChunkIndex);
// Check if we already have messages for this chunk
if (hasChunkMessages(nextChunkIndex)) {
// Don't generate new response, just navigate
setLoadingChunkIndex(null);
return;
}
const requestBody = JSON.stringify({
messages: globalChatHistory,
currentChunk: documentData.chunks[currentChunkIndex]?.text || '',
nextChunk: nextChunk.text,
action: action,
document: documentData ? JSON.stringify(documentData) : ''
})
streamResponse(requestBody, true, nextChunkIndex);
};
const skipChunk = () => {
return sendAutomatedMessage('skip');
};
const markChunkUnderstood = () => {
return sendAutomatedMessage('understood');
};
const startInteractiveLesson = (startChunkLessonFn) => {
setChunkStates(prev => ({
...prev,
[currentChunkIndex]: 'interactive'
}));
startChunkLessonFn(currentChunkIndex);
};
const setChunkAsInteractive = () => {
// No longer tracking status - this is just for compatibility
};
const updateGlobalChatHistory = (messages) => {
setGlobalChatHistory(messages);
};
const getGlobalChatHistory = () => {
return globalChatHistory;
};
const addMessageToChunk = (message, chunkIndex) => {
const messageWithChunk = { ...message, chunkIndex };
setGlobalChatHistory(prev => [...prev, messageWithChunk]);
};
const getCurrentChunkMessages = () => {
return globalChatHistory.filter(msg => msg.chunkIndex === currentChunkIndex);
};
const hasChunkMessages = (chunkIndex) => {
return globalChatHistory.some(msg => msg.chunkIndex === chunkIndex);
};
const isChunkLoading = (chunkIndex) => {
return loadingChunkIndex === chunkIndex;
};
return {
chunkStates,
currentChunkIndex,
chunkExpanded,
showChat,
goToNextChunk,
goToPrevChunk,
skipChunk,
markChunkUnderstood,
startInteractiveLesson,
setChunkExpanded,
setShowChat,
setChunkAsInteractive,
updateGlobalChatHistory,
getGlobalChatHistory,
addMessageToChunk,
getCurrentChunkMessages,
hasChunkMessages,
isChunkLoading,
streamResponse
};
}; |