9router/open-sse/translator/request/openai-to-cursor.js

115 lines
3.2 KiB
JavaScript

/**
* OpenAI to Cursor Request Translator
* Converts OpenAI messages to Cursor simple format
*/
import { register } from "../index.js";
import { FORMATS } from "../formats.js";
/**
* Convert OpenAI messages to Cursor format with native tool_results support
* - system → user with [System Instructions] prefix
* - tool → accumulate into tool_results array for next user/assistant message
* - assistant with tool_calls → keep tool_calls structure (Cursor supports it natively)
*/
function convertMessages(messages) {
const result = [];
let pendingToolResults = [];
for (let i = 0; i < messages.length; i++) {
const msg = messages[i];
if (msg.role === "system") {
result.push({
role: "user",
content: `[System Instructions]\n${msg.content}`
});
continue;
}
if (msg.role === "tool") {
let toolContent = "";
if (typeof msg.content === "string") {
toolContent = msg.content;
} else if (Array.isArray(msg.content)) {
for (const part of msg.content) {
if (part.type === "text") {
toolContent += part.text;
}
}
}
const toolName = msg.name || "tool";
const toolCallId = msg.tool_call_id || "";
// Accumulate tool result
pendingToolResults.push({
tool_call_id: toolCallId,
name: toolName,
index: pendingToolResults.length,
raw_args: toolContent
});
continue;
}
if (msg.role === "user" || msg.role === "assistant") {
let content = "";
if (typeof msg.content === "string") {
content = msg.content;
} else if (Array.isArray(msg.content)) {
for (const part of msg.content) {
if (part.type === "text") {
content += part.text;
}
}
}
// Keep tool_calls structure for assistant messages
if (msg.role === "assistant" && msg.tool_calls && msg.tool_calls.length > 0) {
const assistantMsg = { role: "assistant" };
if (content) {
assistantMsg.content = content;
}
assistantMsg.tool_calls = msg.tool_calls;
// Attach pending tool results to assistant message with tool_calls
if (pendingToolResults.length > 0) {
assistantMsg.tool_results = pendingToolResults;
pendingToolResults = [];
}
result.push(assistantMsg);
} else if (content || pendingToolResults.length > 0) {
const msgObj = {
role: msg.role,
content: content || ""
};
// Attach pending tool results to this message
if (pendingToolResults.length > 0) {
msgObj.tool_results = pendingToolResults;
pendingToolResults = [];
}
result.push(msgObj);
}
}
}
return result;
}
/**
* Transform OpenAI request to Cursor format
* Returns modified body with converted messages
*/
export function buildCursorRequest(model, body, stream, credentials) {
const messages = convertMessages(body.messages || []);
return {
...body,
messages
};
}
register(FORMATS.OPENAI, FORMATS.CURSOR, buildCursorRequest, null);