64 lines
2.6 KiB
JavaScript
64 lines
2.6 KiB
JavaScript
import { OpenAI } from '../js/api/openai.js';
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let api_key_chatgpt = null;
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let openai = null;
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let conversationHistory = [];
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let assistantResponseAccumulator = '';
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self.onmessage = async function(event) {
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if (event.data.type === 'init') {
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api_key_chatgpt = event.data.api_key_chatgpt;
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openai = new OpenAI(api_key_chatgpt, true);
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} else if (event.data.type === 'chatMessage') {
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conversationHistory.push({ role: 'user', content: event.data.message });
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// https://platform.openai.com/docs/models/gpt-4-and-gpt-4-turbo
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// 4096 output tokens
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// 128,000 input tokens
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// const response = await fetch(API_URL, {
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// method: "POST",
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// headers: {
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// "Content-Type": "application/json",
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// "Authorization": `Bearer ${openaiApiKey}`,
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// },
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// body: JSON.stringify({
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// model: "gpt-4-1106-preview",
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// messages: conversationHistory,
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// stream: true,
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// }),
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// });
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const response = await openai.fetchResponse("gpt-4-1106-preview", conversationHistory); //4096);
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postMessage({ type: 'messageSent' });
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const reader = response.body.getReader();
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const decoder = new TextDecoder("utf-8");
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while (true) {
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const { done, value } = await reader.read();
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if (done) {
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conversationHistory.push({ role: 'assistant', content: assistantResponseAccumulator });
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assistantResponseAccumulator = '';
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postMessage({ type: 'tokensDone' });
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break;
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}
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// lots of low-level OpenAI response parsing stuff
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const chunk = decoder.decode(value);
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const lines = chunk.split("\n");
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const parsedLines = lines
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.map((line) => line.replace(/^data: /, "").trim()) // Remove the "data: " prefix
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.filter((line) => line !== "" && line !== "[DONE]") // Remove empty lines and "[DONE]"
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.map((line) => JSON.parse(line)); // Parse the JSON string
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for (const parsedLine of parsedLines) {
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const { choices } = parsedLine;
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const { delta } = choices[0];
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const { content } = delta;
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// Update the UI with the new content
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if (content) {
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assistantResponseAccumulator += content;
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postMessage({ type: 'newToken', payload: { token: content } });
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}
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}
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}
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}
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};
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