🚀 Add Native Gemini API Format Support - Universal AI Gateway

install-gemini-support.sh

@@ -0,0 +1,177 @@
+#!/bin/bash
+
+# ============================================================================
+# Gemini API Support Installer for droid2api
+# ============================================================================
+# This script upgrades routes.js to add native Gemini API support
+# ============================================================================
+
+set -e
+
+echo "=============================================="
+echo "  🔧 Installing Gemini API Support"
+echo "=============================================="
+echo ""
+
+# Check if routes.js exists
+if [ ! -f "routes.js" ]; then
+    echo "❌ Error: routes.js not found in current directory"
+    echo "Please run this script from the droid2api root directory"
+    exit 1
+fi
+
+# Check if transformers exist
+if [ ! -f "transformers/request-gemini.js" ] || [ ! -f "transformers/response-gemini.js" ]; then
+    echo "❌ Error: Gemini transformers not found"
+    echo "Please ensure request-gemini.js and response-gemini.js are in transformers/"
+    exit 1
+fi
+
+# Check if already installed
+if grep -q "request-gemini" routes.js; then
+    echo "⚠️  Gemini support appears to be already installed"
+    read -p "Do you want to reinstall? (y/N) " -n 1 -r
+    echo
+    if [[ ! $REPLY =~ ^[Yy]$ ]]; then
+        echo "Installation cancelled"
+        exit 0
+    fi
+fi
+
+echo "📦 Creating backup of routes.js..."
+cp routes.js routes.js.backup.$(date +%Y%m%d_%H%M%S)
+echo "✅ Backup created"
+echo ""
+
+echo "🔍 Analyzing routes.js structure..."
+
+# Find the position to insert imports (after existing imports)
+IMPORT_LINE=$(grep -n "^import.*from.*'./transformers" routes.js | tail -1 | cut -d: -f1)
+
+if [ -z "$IMPORT_LINE" ]; then
+    echo "❌ Error: Could not find transformer imports in routes.js"
+    exit 1
+fi
+
+echo "📝 Adding Gemini imports after line $IMPORT_LINE..."
+
+# Create temp file with new imports
+head -n "$IMPORT_LINE" routes.js > routes.js.tmp
+cat >> routes.js.tmp << 'EOF'
+import { geminiToOpenAI, openaiToGemini } from './transformers/request-gemini.js';
+import { GeminiResponseTransformer } from './transformers/response-gemini.js';
+EOF
+tail -n +$((IMPORT_LINE + 1)) routes.js >> routes.js.tmp
+
+# Find where to insert the Gemini route (before export default)
+EXPORT_LINE=$(grep -n "^export default router" routes.js.tmp | head -1 | cut -d: -f1)
+
+if [ -z "$EXPORT_LINE" ]; then
+    echo "❌ Error: Could not find 'export default router' in routes.js"
+    rm routes.js.tmp
+    exit 1
+fi
+
+echo "📝 Adding Gemini endpoint before line $EXPORT_LINE..."
+
+# Create final file with Gemini route
+head -n $((EXPORT_LINE - 1)) routes.js.tmp > routes.js.new
+cat >> routes.js.new << 'GEMINIROUTE'
+
+// ============================================================================
+// Gemini API Format Handler
+// ============================================================================
+router.post('/v1/generateContent', async (req, res) => {
+  logInfo('Gemini API request received');
+
+  try {
+    // Convert Gemini request to OpenAI format internally
+    const openaiRequest = geminiToOpenAI(req.body);
+
+    // Use existing processing logic
+    const { backendRequest, selectedModel } = await processRequest(
+      openaiRequest, 
+      req.headers.authorization
+    );
+
+    logInfo('Processed Gemini request', { model: selectedModel.id });
+
+    // Handle streaming
+    if (backendRequest.stream) {
+      res.setHeader('Content-Type', 'text/event-stream');
+      res.setHeader('Cache-Control', 'no-cache');
+      res.setHeader('Connection', 'keep-alive');
+
+      try {
+        const backendResponse = await forwardRequest(backendRequest, selectedModel);
+        const transformer = new GeminiResponseTransformer(selectedModel.id);
+
+        for await (const chunk of transformer.transformStream(backendResponse.body)) {
+          res.write(chunk);
+        }
+
+        res.end();
+      } catch (error) {
+        logError('Gemini streaming error', error);
+        res.status(500).json({
+          error: {
+            message: error.message,
+            type: 'internal_error'
+          }
+        });
+      }
+    } else {
+      // Non-streaming response
+      const backendResponse = await forwardRequest(backendRequest, selectedModel);
+      const openaiResponse = await backendResponse.json();
+
+      // Convert OpenAI response back to Gemini format
+      const geminiResponse = openaiToGemini(openaiResponse);
+
+      res.json(geminiResponse);
+    }
+  } catch (error) {
+    logError('Gemini request processing error', error);
+    res.status(error.status || 500).json({
+      error: {
+        message: error.message || 'Internal server error',
+        type: 'internal_error'
+      }
+    });
+  }
+});
+
+GEMINIROUTE
+
+tail -n +$EXPORT_LINE routes.js.tmp >> routes.js.new
+
+# Replace original with new version
+mv routes.js.new routes.js
+rm routes.js.tmp
+
+echo "✅ Gemini support installed successfully!"
+echo ""
+echo "=============================================="
+echo "  📋 Installation Summary"
+echo "=============================================="
+echo ""
+echo "✓ Added Gemini transformer imports"
+echo "✓ Added /v1/generateContent endpoint"
+echo "✓ Backup saved to routes.js.backup.*"
+echo ""
+echo "🎯 Gemini API is now available at:"
+echo "   POST /v1/generateContent"
+echo ""
+echo "📖 Supported Gemini features:"
+echo "   • contents/parts structure"
+echo "   • systemInstruction"
+echo "   • generationConfig"
+echo "   • Streaming responses"
+echo "   • Multi-modal (text + images)"
+echo "   • Tool/function calling"
+echo ""
+echo "🚀 Restart droid2api to activate:"
+echo "   npm start"
+echo ""
+echo "Done! 🎉"
+

package.json

@@ -1,18 +1,36 @@
 {
   "name": "droid2api",
-  "version": "1.3.3",
-  "description": "OpenAI Compatible API Proxy",
+  "version": "2.0.0",
+  "description": "Universal AI API Gateway - OpenAI, Anthropic, Gemini Compatible",
   "main": "server.js",
   "type": "module",
   "scripts": {
     "start": "node server.js",
-    "dev": "node server.js"
+    "dev": "node server.js",
+    "install-deps": "npm install -g @anthropic-ai/claude-code @musistudio/claude-code-router"
   },
-  "keywords": ["openai", "api", "proxy"],
+  "keywords": [
+    "openai",
+    "anthropic",
+    "gemini",
+    "api",
+    "proxy",
+    "gateway",
+    "claude",
+    "universal"
+  ],
   "author": "",
   "license": "MIT",
   "dependencies": {
     "express": "^4.18.2",
     "node-fetch": "^3.3.2"
+  },
+  "optionalDependencies": {
+    "@anthropic-ai/claude-code": "latest",
+    "@musistudio/claude-code-router": "latest"
+  },
+  "peerDependencies": {
+    "@anthropic-ai/claude-code": ">=1.0.0",
+    "@musistudio/claude-code-router": ">=1.0.0"
   }
 }