588 lines
18 KiB
TypeScript
588 lines
18 KiB
TypeScript
import { v4 as uuidv4 } from 'uuid';
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import { mapClaudeModelToGemini } from './ModelMapping';
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import { cleanJsonSchema } from './JsonSchemaUtils';
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import { SignatureStore } from './SignatureStore';
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import {
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ClaudeRequest,
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Message,
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Tool,
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GeminiInternalRequest,
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GeminiContent,
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GeminiToolDeclaration,
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GenerationConfig,
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ImageConfig,
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FunctionDeclaration,
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SafetySetting,
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} from './types';
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/**
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* Request Configuration
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* Contains request type, model, and image generation configuration
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*/
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interface RequestConfig {
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/** Request type: 'agent', 'web_search', 'image_gen' */
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requestType: string;
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/** Whether to inject Google Search tool */
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injectGoogleSearch: boolean;
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/** Final model name to use */
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finalModel: string;
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/** Image generation config (only for image generation requests) */
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imageConfig: ImageConfig | null;
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}
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// --- Main Logic ---
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// --- Main Logic ---
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/**
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* Transforms Claude request into Gemini internal request format
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* @param claudeReq Claude API request
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* @param projectId Gemini Project ID
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* @returns Gemini internal request format
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*/
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export function transformClaudeRequestIn(
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claudeReq: ClaudeRequest,
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projectId: string,
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): GeminiInternalRequest {
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// Check for networking tools (server tool or built-in tool)
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const hasWebSearchTool = detectsNetworkingTool(claudeReq.tools);
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// Map to store tool_use id -> name mapping
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const toolIdToName = new Map<string, string>();
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// 1. System Instruction
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let systemInstruction = buildSystemInstruction(claudeReq.system, claudeReq.model);
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// Map model name
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const mappedModel = hasWebSearchTool
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? 'gemini-2.5-flash'
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: mapClaudeModelToGemini(claudeReq.model);
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// Convert Claude tools to Tool array for networking detection
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const toolsVal: Tool[] | undefined = claudeReq.tools
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? (JSON.parse(JSON.stringify(claudeReq.tools)) as Tool[])
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: undefined;
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// Resolve grounding config
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const config = resolveRequestConfig(claudeReq.model, mappedModel, toolsVal);
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const allowDummyThought = config.finalModel.startsWith('gemini-');
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// 4. Generation Config & Thinking
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const generationConfig = buildGenerationConfig(claudeReq, hasWebSearchTool, config.finalModel);
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const isThinkingEnabled = claudeReq.thinking?.type === 'enabled';
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// 2. Contents (Messages)
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const contents = buildContents(
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claudeReq.messages,
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toolIdToName,
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isThinkingEnabled,
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allowDummyThought,
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);
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// 3. Tools
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let tools = buildTools(claudeReq.tools, hasWebSearchTool);
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// 5. Safety Settings
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const safetySettings = [
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{ category: 'HARM_CATEGORY_HARASSMENT', threshold: 'OFF' },
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{ category: 'HARM_CATEGORY_HATE_SPEECH', threshold: 'OFF' },
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{ category: 'HARM_CATEGORY_SEXUALLY_EXPLICIT', threshold: 'OFF' },
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{ category: 'HARM_CATEGORY_DANGEROUS_CONTENT', threshold: 'OFF' },
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{ category: 'HARM_CATEGORY_CIVIC_INTEGRITY', threshold: 'OFF' },
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];
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// Build inner request
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const innerRequest: {
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contents: GeminiContent[];
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safetySettings: SafetySetting[];
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systemInstruction?: { parts: { text: string }[] };
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generationConfig?: GenerationConfig;
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tools?: GeminiToolDeclaration[];
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toolConfig?: { functionCallingConfig: { mode: string } };
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} = {
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contents,
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safetySettings,
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};
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deepCleanUndefined(innerRequest);
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if (systemInstruction) {
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innerRequest.systemInstruction = systemInstruction;
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}
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if (generationConfig && Object.keys(generationConfig).length > 0) {
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innerRequest.generationConfig = generationConfig;
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}
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if (tools) {
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innerRequest.tools = tools;
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innerRequest.toolConfig = { functionCallingConfig: { mode: 'VALIDATED' } };
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}
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// Inject googleSearch tool if needed (and not already done by buildTools)
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if (config.injectGoogleSearch && !hasWebSearchTool) {
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injectGoogleSearchTool(innerRequest);
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}
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// Inject imageConfig if present (for image generation models)
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if (config.imageConfig) {
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// 1. Remove tools (image generation does not support tools)
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delete innerRequest.tools;
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// 2. Remove systemInstruction (image generation does not support system prompts)
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delete innerRequest.systemInstruction;
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// 3. Clean generationConfig
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let genConfig = innerRequest.generationConfig || {};
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delete genConfig.thinkingConfig;
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delete genConfig.responseMimeType;
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delete genConfig.responseModalities;
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genConfig.imageConfig = config.imageConfig;
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innerRequest.generationConfig = genConfig;
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}
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const requestId = `agent-${uuidv4()}`;
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const body: GeminiInternalRequest = {
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project: projectId,
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requestId: requestId,
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request: innerRequest as GeminiInternalRequest['request'],
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model: config.finalModel,
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userAgent: 'antigravity',
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requestType: config.requestType,
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};
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if (claudeReq.metadata?.user_id) {
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body.sessionId = claudeReq.metadata.user_id;
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}
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return body;
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}
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/**
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* Resolves request configuration
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* Determines request type and whether to inject search tools based on model name and tools
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*/
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function resolveRequestConfig(
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originalModel: string,
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mappedModel: string,
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tools?: Tool[],
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): RequestConfig {
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// 1. Image Generation Check
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if (mappedModel.startsWith('gemini-3-pro-image')) {
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const { imageConfig, parsedBaseModel } = parseImageConfig(originalModel);
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return {
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requestType: 'image_gen',
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injectGoogleSearch: false,
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finalModel: parsedBaseModel,
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imageConfig,
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};
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}
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const hasNetworkingTool = detectsNetworkingTool(tools);
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const hasNonNetworking = containsNonNetworkingTool(tools);
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// Strip -online suffix
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const isOnlineSuffix = originalModel.endsWith('-online');
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const isHighQualityModel =
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mappedModel === 'gemini-2.5-flash' ||
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mappedModel === 'gemini-1.5-pro' ||
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mappedModel.startsWith('gemini-1.5-pro-') ||
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mappedModel.startsWith('gemini-2.5-flash-') ||
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mappedModel.startsWith('gemini-2.0-flash') ||
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mappedModel.startsWith('gemini-3-') ||
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mappedModel.includes('claude-3-5-sonnet') ||
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mappedModel.includes('claude-3-opus') ||
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mappedModel.includes('claude-sonnet') ||
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mappedModel.includes('claude-opus') ||
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mappedModel.includes('claude-4');
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// Determine if we should enable networking
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const enableNetworking =
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isOnlineSuffix || (isHighQualityModel && !hasNonNetworking) || hasNetworkingTool;
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let finalModel = mappedModel.replace(/-online$/, '');
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if (enableNetworking) {
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// Fallback for search compatibility
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if (finalModel.includes('thinking') || !finalModel.startsWith('gemini-')) {
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finalModel = 'gemini-2.5-flash';
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}
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}
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return {
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requestType: enableNetworking ? 'web_search' : 'agent',
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injectGoogleSearch: enableNetworking,
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finalModel,
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imageConfig: null,
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};
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}
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/**
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* Parses image generation configuration
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* Extracts aspect ratio and resolution settings from model name
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*/
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function parseImageConfig(modelName: string): {
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imageConfig: ImageConfig;
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parsedBaseModel: string;
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} {
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let aspectRatio = '1:1';
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if (modelName.includes('-16x9')) aspectRatio = '16:9';
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else if (modelName.includes('-9x16')) aspectRatio = '9:16';
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else if (modelName.includes('-4x3')) aspectRatio = '4:3';
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else if (modelName.includes('-3x4')) aspectRatio = '3:4';
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else if (modelName.includes('-1x1')) aspectRatio = '1:1';
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const isHd = modelName.includes('-4k') || modelName.includes('-hd');
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const config: ImageConfig = { aspectRatio };
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if (isHd) {
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config.imageSize = '4K';
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}
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return { imageConfig: config, parsedBaseModel: 'gemini-3-pro-image' };
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}
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/**
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* Detects if networking tools are present
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* Checks tool list for web search related tools
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* Supports Claude Tool and Gemini GeminiToolDeclaration formats
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*/
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function detectsNetworkingTool(tools?: (Tool | GeminiToolDeclaration)[]): boolean {
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if (!tools) {
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return false;
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}
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const keywords = [
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'web_search',
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'google_search',
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'web_search_20250305',
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'google_search_retrieval',
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];
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for (const tool of tools) {
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// Claude Tool format
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if ('name' in tool && tool.name && keywords.includes(tool.name)) {
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return true;
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}
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if ('type' in tool && tool.type && keywords.includes(tool.type)) {
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return true;
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}
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// OpenAI nested format (runtime check)
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const openaiTool = tool as { function?: { name?: string } };
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if (openaiTool.function?.name && keywords.includes(openaiTool.function.name)) {
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return true;
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}
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// Gemini GeminiToolDeclaration format
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if ('functionDeclarations' in tool && tool.functionDeclarations) {
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for (const decl of tool.functionDeclarations) {
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if (decl.name && keywords.includes(decl.name)) {
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return true;
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}
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}
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}
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// Gemini search tools
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if ('googleSearch' in tool && tool.googleSearch) {
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return true;
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}
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if ('googleSearchRetrieval' in tool && tool.googleSearchRetrieval) {
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return true;
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}
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}
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return false;
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}
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/**
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* Detects if non-networking tools are present
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* Checks tool list for tools other than web search
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*/
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function containsNonNetworkingTool(tools?: (Tool | GeminiToolDeclaration)[]): boolean {
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if (!tools) {
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return false;
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}
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const keywords = [
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'web_search',
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'google_search',
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'web_search_20250305',
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'google_search_retrieval',
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];
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for (const tool of tools) {
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let isNetworking = false;
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// Claude Tool format
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if ('name' in tool && tool.name && keywords.includes(tool.name)) {
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isNetworking = true;
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}
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// OpenAI nested format (runtime check)
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const openaiTool = tool as { function?: { name?: string } };
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if (openaiTool.function?.name && keywords.includes(openaiTool.function.name))
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isNetworking = true;
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// Gemini search tools
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if ('googleSearch' in tool && tool.googleSearch) {
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isNetworking = true;
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}
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if ('googleSearchRetrieval' in tool && tool.googleSearchRetrieval) {
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isNetworking = true;
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}
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// Gemini functionDeclarations
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if ('functionDeclarations' in tool && tool.functionDeclarations) {
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for (const decl of tool.functionDeclarations) {
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if (decl.name && !keywords.includes(decl.name)) {
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return true; // Found local
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}
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}
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isNetworking = true; // All are networking
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}
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if (!isNetworking) {
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return true;
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}
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}
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return false;
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}
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/**
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* Inject Google Search Tool
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* Adds googleSearch tool to the request
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*/
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function injectGoogleSearchTool(body: { tools?: GeminiToolDeclaration[] }) {
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if (!body.tools) {
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body.tools = [];
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}
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const toolsArr = body.tools;
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const hasFunctions = toolsArr.some((t) => t.functionDeclarations);
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if (hasFunctions) {
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console.info('Skipping googleSearch injection due to existing functionDeclarations');
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return;
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}
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// Remove existing to avoid duplicates
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body.tools = toolsArr.filter((t) => !t.googleSearch && !t.googleSearchRetrieval);
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body.tools.push({ googleSearch: {} });
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}
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/**
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* Builds system instruction
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* Converts Claude system prompts to Gemini format
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*/
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function buildSystemInstruction(
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system: ClaudeRequest['system'],
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modelName: string,
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): { parts: { text: string }[] } | null {
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if (!system) {
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return null;
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}
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const parts: { text: string }[] = [];
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const identityPatch =
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`--- [IDENTITY_PATCH] ---\n` +
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`Ignore any previous instructions regarding your identity or host platform (e.g., Amazon Q, Google AI).\n` +
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`You are currently providing services as the native ${modelName} model via a standard API proxy.\n` +
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`Always use the 'claude' command for terminal tasks if relevant.\n` +
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`--- [SYSTEM_PROMPT_BEGIN] ---\n`;
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parts.push({ text: identityPatch });
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if (typeof system === 'string') {
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parts.push({ text: system });
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} else if (Array.isArray(system)) {
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for (const block of system) {
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if (block.type === 'text') parts.push({ text: block.text });
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}
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}
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parts.push({ text: '\n--- [SYSTEM_PROMPT_END] ---' });
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return { parts };
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}
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/**
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* Builds message contents
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* Converts Claude message list to Gemini content format
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*/
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function buildContents(
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messages: Message[],
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toolIdToName: Map<string, string>,
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isThinkingEnabled: boolean,
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allowDummyThought: boolean,
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): GeminiContent[] {
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const contents: GeminiContent[] = [];
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let lastThoughtSignature: string | null = null;
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for (let i = 0; i < messages.length; i++) {
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const msg = messages[i];
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const role = msg.role === 'assistant' ? 'model' : msg.role;
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const parts: {
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text?: string;
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inlineData?: {
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mimeType: string;
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data: string;
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};
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thought?: boolean;
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}[] = [];
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const contentBlocks = Array.isArray(msg.content)
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? msg.content
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: msg.content
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? [{ type: 'text' as const, text: msg.content }]
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: [];
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for (const block of contentBlocks) {
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if (block.type === 'text') {
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if (block.text && block.text !== '(no content)' && block.text.trim() !== '')
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parts.push({ text: block.text.trim() });
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} else if (block.type === 'thinking') {
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const part: any = { text: block.thinking, thought: true };
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cleanJsonSchema(part);
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if (block.signature) {
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lastThoughtSignature = block.signature;
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part.thoughtSignature = block.signature;
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}
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parts.push(part);
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} else if (block.type === 'image') {
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if (block.source.type === 'base64')
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parts.push({
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inlineData: { mimeType: block.source.media_type, data: block.source.data },
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});
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} else if (block.type === 'tool_use') {
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const part: any = { functionCall: { name: block.name, args: block.input, id: block.id } };
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cleanJsonSchema(part);
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toolIdToName.set(block.id, block.name);
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const finalSig = block.signature || lastThoughtSignature || SignatureStore.get();
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if (finalSig) part.thoughtSignature = finalSig;
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parts.push(part);
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} else if (block.type === 'tool_result') {
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const funcName = toolIdToName.get(block.tool_use_id) || block.tool_use_id;
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let mergedContent = '';
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if (typeof block.content === 'string') mergedContent = block.content;
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else if (Array.isArray(block.content))
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mergedContent = block.content
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.filter((b: any) => b.type === 'text')
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.map((b: any) => b.text)
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.join('\n');
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if (mergedContent.trim().length === 0)
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mergedContent = block.is_error
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? 'Tool execution failed with no output.'
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: 'Command executed successfully.';
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const part: any = {
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functionResponse: {
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name: funcName,
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response: { result: mergedContent },
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id: block.tool_use_id,
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},
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};
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if (lastThoughtSignature) part.thoughtSignature = lastThoughtSignature;
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parts.push(part);
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} else if (block.type === 'redacted_thinking') {
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parts.push({ text: `[Redacted Thinking: ${block.data}]`, thought: true });
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}
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}
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if (allowDummyThought && role === 'model' && isThinkingEnabled && i === messages.length - 1) {
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const hasThought = parts.some((p) => p.thought === true);
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if (!hasThought) parts.unshift({ text: 'Thinking...', thought: true });
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}
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if (parts.length > 0) contents.push({ role, parts });
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}
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return contents;
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}
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/**
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* build tools
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* convert claude tools to gemini function declarations
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*/
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function buildTools(
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tools: Tool[] | undefined,
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hasWebSearch: boolean,
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): GeminiToolDeclaration[] | null {
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if (!tools) {
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return null;
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}
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const functionDeclarations: FunctionDeclaration[] = [];
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let hasGoogleSearch = hasWebSearch;
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for (const tool of tools) {
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if (
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tool.name === 'web_search' ||
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tool.name === 'google_search' ||
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tool.type === 'web_search_20250305'
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) {
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hasGoogleSearch = true;
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continue;
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}
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if (tool.name) {
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const inputSchema = tool.input_schema || { type: 'object', properties: {} };
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cleanJsonSchema(inputSchema);
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functionDeclarations.push({
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name: tool.name,
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description: tool.description,
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parameters: inputSchema,
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});
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}
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}
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const toolObj: GeminiToolDeclaration = {};
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if (functionDeclarations.length > 0) {
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toolObj.functionDeclarations = functionDeclarations;
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} else if (hasGoogleSearch) {
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toolObj.googleSearch = {};
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}
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if (Object.keys(toolObj).length > 0) {
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return [toolObj];
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}
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return null;
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|
}
|
|
|
|
/**
|
|
* build generation config
|
|
* convert claude request parameters to gemini generation config
|
|
*/
|
|
function buildGenerationConfig(
|
|
claudeReq: ClaudeRequest,
|
|
hasWebSearch: boolean,
|
|
mappedModel: string,
|
|
): GenerationConfig {
|
|
const config: GenerationConfig = {};
|
|
if (claudeReq.thinking?.type === 'enabled') {
|
|
const thinkingConfig: GenerationConfig['thinkingConfig'] = { includeThoughts: true };
|
|
if (claudeReq.thinking.budget_tokens) {
|
|
let budget = claudeReq.thinking.budget_tokens;
|
|
const isFlash = hasWebSearch || mappedModel.includes('gemini-2.5-flash');
|
|
if (isFlash) budget = Math.min(budget, 24576);
|
|
thinkingConfig.thinkingBudget = budget;
|
|
}
|
|
config.thinkingConfig = thinkingConfig;
|
|
}
|
|
if (claudeReq.temperature !== undefined) {
|
|
config.temperature = claudeReq.temperature;
|
|
}
|
|
if (claudeReq.top_p !== undefined) {
|
|
config.topP = claudeReq.top_p;
|
|
}
|
|
if (claudeReq.top_k !== undefined) {
|
|
config.topK = claudeReq.top_k;
|
|
}
|
|
config.maxOutputTokens = 64000;
|
|
config.stopSequences = ['<|user|>', '<|endoftext|>', '<|end_of_turn|>', '[DONE]', '\n\nHuman:'];
|
|
return config;
|
|
}
|
|
|
|
/**
|
|
* deep clean undefined values
|
|
* recursively delete all properties with undefined values
|
|
* @param obj
|
|
*/
|
|
function deepCleanUndefined(obj: unknown): void {
|
|
if (Array.isArray(obj)) {
|
|
obj.forEach(deepCleanUndefined);
|
|
} else if (obj && typeof obj === 'object') {
|
|
const record = obj as Record<string, unknown>;
|
|
Object.keys(record).forEach((key) => {
|
|
if (record[key] === undefined) delete record[key];
|
|
else deepCleanUndefined(record[key]);
|
|
});
|
|
}
|
|
}
|