Files
antigravity-claude-proxy/src/cloudcode/request-builder.js
2026-01-08 10:24:54 +05:30

90 lines
2.8 KiB
JavaScript

/**
* Request Builder for Cloud Code
*
* Builds request payloads and headers for the Cloud Code API.
*/
import crypto from 'crypto';
import {
ANTIGRAVITY_HEADERS,
ANTIGRAVITY_SYSTEM_INSTRUCTION,
getModelFamily,
isThinkingModel
} from '../constants.js';
import { convertAnthropicToGoogle } from '../format/index.js';
import { deriveSessionId } from './session-manager.js';
/**
* Build the wrapped request body for Cloud Code API
*
* @param {Object} anthropicRequest - The Anthropic-format request
* @param {string} projectId - The project ID to use
* @returns {Object} The Cloud Code API request payload
*/
export function buildCloudCodeRequest(anthropicRequest, projectId) {
const model = anthropicRequest.model;
const googleRequest = convertAnthropicToGoogle(anthropicRequest);
// Use stable session ID derived from first user message for cache continuity
googleRequest.sessionId = deriveSessionId(anthropicRequest);
// Build systemInstruction with role: "user" (CLIProxyAPI v6.6.89 compatibility)
// Prepend Antigravity identity to any existing system instructions
let systemInstructionText = ANTIGRAVITY_SYSTEM_INSTRUCTION;
if (googleRequest.systemInstruction && googleRequest.systemInstruction.parts) {
const existingText = googleRequest.systemInstruction.parts
.map(p => p.text || '')
.filter(t => t)
.join('\n');
if (existingText) {
systemInstructionText = ANTIGRAVITY_SYSTEM_INSTRUCTION + '\n\n' + existingText;
}
}
const payload = {
project: projectId,
model: model,
request: googleRequest,
userAgent: 'antigravity',
requestType: 'agent', // CLIProxyAPI v6.6.89 compatibility
requestId: 'agent-' + crypto.randomUUID()
};
// Inject systemInstruction with role: "user" at the top level (CLIProxyAPI v6.6.89 behavior)
payload.request.systemInstruction = {
role: 'user',
parts: [{ text: systemInstructionText }]
};
return payload;
}
/**
* Build headers for Cloud Code API requests
*
* @param {string} token - OAuth access token
* @param {string} model - Model name
* @param {string} accept - Accept header value (default: 'application/json')
* @returns {Object} Headers object
*/
export function buildHeaders(token, model, accept = 'application/json') {
const headers = {
'Authorization': `Bearer ${token}`,
'Content-Type': 'application/json',
...ANTIGRAVITY_HEADERS
};
const modelFamily = getModelFamily(model);
// Add interleaved thinking header only for Claude thinking models
if (modelFamily === 'claude' && isThinkingModel(model)) {
headers['anthropic-beta'] = 'interleaved-thinking-2025-05-14';
}
if (accept !== 'application/json') {
headers['Accept'] = accept;
}
return headers;
}