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const express = require('express');
const router = express.Router();
const { getResponseSender } = require('../endpoints/schemas');
const { validateTools } = require('../../../app');
const { addTitle } = require('../endpoints/openAI');
const { initializeClient } = require('../endpoints/gptPlugins');
const { saveMessage, getConvoTitle, getConvo } = require('../../../models');
const { sendMessage, createOnProgress } = require('../../utils');
const {
handleAbort,
createAbortController,
handleAbortError,
setHeaders,
validateEndpoint,
buildEndpointOption,
} = require('../../middleware');
router.post('/abort', handleAbort());
router.post('/', validateEndpoint, buildEndpointOption, setHeaders, async (req, res) => {
let {
text,
endpointOption,
conversationId,
parentMessageId = null,
overrideParentMessageId = null,
} = req.body;
console.log('ask log');
console.dir({ text, conversationId, endpointOption }, { depth: null });
let metadata;
let userMessage;
let promptTokens;
let userMessageId;
let responseMessageId;
let lastSavedTimestamp = 0;
let saveDelay = 100;
const sender = getResponseSender(endpointOption);
const newConvo = !conversationId;
const user = req.user.id;
const plugins = [];
const addMetadata = (data) => (metadata = data);
const getReqData = (data = {}) => {
for (let key in data) {
if (key === 'userMessage') {
userMessage = data[key];
userMessageId = data[key].messageId;
} else if (key === 'responseMessageId') {
responseMessageId = data[key];
} else if (key === 'promptTokens') {
promptTokens = data[key];
} else if (!conversationId && key === 'conversationId') {
conversationId = data[key];
}
}
};
let streaming = null;
let timer = null;
const {
onProgress: progressCallback,
sendIntermediateMessage,
getPartialText,
} = createOnProgress({
onProgress: ({ text: partialText }) => {
const currentTimestamp = Date.now();
if (timer) {
clearTimeout(timer);
}
if (currentTimestamp - lastSavedTimestamp > saveDelay) {
lastSavedTimestamp = currentTimestamp;
saveMessage({
messageId: responseMessageId,
sender,
conversationId,
parentMessageId: overrideParentMessageId || userMessageId,
text: partialText,
model: endpointOption.modelOptions.model,
unfinished: true,
cancelled: false,
error: false,
plugins,
user,
});
}
if (saveDelay < 500) {
saveDelay = 500;
}
streaming = new Promise((resolve) => {
timer = setTimeout(() => {
resolve();
}, 250);
});
},
});
const pluginMap = new Map();
const onAgentAction = async (action, runId) => {
pluginMap.set(runId, action.tool);
sendIntermediateMessage(res, { plugins });
};
const onToolStart = async (tool, input, runId, parentRunId) => {
const pluginName = pluginMap.get(parentRunId);
const latestPlugin = {
runId,
loading: true,
inputs: [input],
latest: pluginName,
outputs: null,
};
if (streaming) {
await streaming;
}
const extraTokens = ':::plugin:::\n';
plugins.push(latestPlugin);
sendIntermediateMessage(res, { plugins }, extraTokens);
};
const onToolEnd = async (output, runId) => {
if (streaming) {
await streaming;
}
const pluginIndex = plugins.findIndex((plugin) => plugin.runId === runId);
if (pluginIndex !== -1) {
plugins[pluginIndex].loading = false;
plugins[pluginIndex].outputs = output;
}
};
const onChainEnd = () => {
saveMessage({ ...userMessage, user });
sendIntermediateMessage(res, { plugins });
};
const getAbortData = () => ({
sender,
conversationId,
messageId: responseMessageId,
parentMessageId: overrideParentMessageId ?? userMessageId,
text: getPartialText(),
plugins: plugins.map((p) => ({ ...p, loading: false })),
userMessage,
promptTokens,
});
const { abortController, onStart } = createAbortController(req, res, getAbortData);
try {
endpointOption.tools = await validateTools(user, endpointOption.tools);
const { client } = await initializeClient({ req, res, endpointOption });
let response = await client.sendMessage(text, {
user,
conversationId,
parentMessageId,
overrideParentMessageId,
getReqData,
onAgentAction,
onChainEnd,
onToolStart,
onToolEnd,
onStart,
addMetadata,
getPartialText,
...endpointOption,
onProgress: progressCallback.call(null, {
res,
text,
parentMessageId: overrideParentMessageId || userMessageId,
plugins,
}),
abortController,
});
if (overrideParentMessageId) {
response.parentMessageId = overrideParentMessageId;
}
if (metadata) {
response = { ...response, ...metadata };
}
console.log('CLIENT RESPONSE');
console.dir(response, { depth: null });
response.plugins = plugins.map((p) => ({ ...p, loading: false }));
await saveMessage({ ...response, user });
sendMessage(res, {
title: await getConvoTitle(user, conversationId),
final: true,
conversation: await getConvo(user, conversationId),
requestMessage: userMessage,
responseMessage: response,
});
res.end();
if (parentMessageId === '00000000-0000-0000-0000-000000000000' && newConvo) {
addTitle(req, {
text,
response,
client,
});
}
} catch (error) {
const partialText = getPartialText();
handleAbortError(res, req, error, {
partialText,
conversationId,
sender,
messageId: responseMessageId,
parentMessageId: userMessageId ?? parentMessageId,
});
}
});
module.exports = router;
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