Fix API URL handling for Docker deployment

- Replace hardcoded localhost URLs with dynamic host detection from request headers
- Supports both development (localhost:3001) and Docker (localhost:9000 -> 3000) environments
- Uses host header to determine correct protocol and port for internal API calls
- Updated execute-dex, validate, and orders APIs to use dynamic baseUrl
- Ensures proper API communication in containerized environments

app/api/trading/execute-dex/route.js

@@ -18,6 +18,11 @@ export async function POST(request) {
       toCoin 
     } = body
 
+    // Get the base URL from the request
+    const host = request.headers.get('host') || 'localhost:3000'
+    const protocol = host.includes('localhost') ? 'http' : 'https'
+    const baseUrl = `${protocol}://${host}`
+
     console.log('🔄 Execute DEX trade request:', { 
       symbol, 
       side, 
@@ -66,7 +71,7 @@ export async function POST(request) {
       console.log('🔍 Validating wallet balance before DEX trade...')
       
       try {
-        const validationResponse = await fetch(`${process.env.NEXT_PUBLIC_API_URL || 'http://localhost:3000'}/api/trading/validate`, {
+        const validationResponse = await fetch(`${baseUrl}/api/trading/validate`, {
           method: 'POST',
           headers: { 'Content-Type': 'application/json' },
           body: JSON.stringify({
@@ -197,7 +202,7 @@ export async function POST(request) {
       // Add trade to history with clear spot swap indication
       try {
         // Use localhost for internal container communication
-        await fetch('http://localhost:3001/api/trading/history', {
+        await fetch(`${baseUrl}/api/trading/history`, {
           method: 'POST',
           headers: { 'Content-Type': 'application/json' },
           body: JSON.stringify({

app/api/trading/orders/route.js

@@ -106,6 +106,11 @@ export async function POST(request) {
     const body = await request.json()
     const { action, orderId, ...orderData } = body
 
+    // Get the base URL from the request
+    const host = request.headers.get('host') || 'localhost:3000'
+    const protocol = host.includes('localhost') ? 'http' : 'https'
+    const baseUrl = `${protocol}://${host}`
+
     if (action === 'add') {
       // Load existing orders
       const pendingOrders = loadPendingOrders()
@@ -187,7 +192,7 @@ export async function POST(request) {
 
       try {
         // Execute the trade by calling the trading API
-        const tradeResponse = await fetch('http://localhost:3000/api/trading', {
+        const tradeResponse = await fetch(`${baseUrl}/api/trading`, {
           method: 'POST',
           headers: { 'Content-Type': 'application/json' },
           body: JSON.stringify({

app/api/trading/validate/route.js

@@ -7,10 +7,15 @@ export async function POST(request) {
 
     console.log(`🔍 Validating trade: ${side} ${amount} ${symbol} (USD: ${amountUSD})`)
 
+    // Get the base URL from the request or use localhost for development
+    const host = request.headers.get('host') || 'localhost:3000'
+    const protocol = host.includes('localhost') ? 'http' : 'https'
+    const baseUrl = `${protocol}://${host}`
+
     // Fetch real wallet balance from the wallet API
     let walletBalance
     try {
-      const walletResponse = await fetch(`${process.env.NEXT_PUBLIC_API_URL || 'http://localhost:3000'}/api/wallet/balance`)
+      const walletResponse = await fetch(`${baseUrl}/api/wallet/balance`)
       const walletData = await walletResponse.json()
       
       if (walletData.success && walletData.wallet) {

test-trade-validation.js

@@ -2,6 +2,9 @@
 const testTradeValidation = async () => {
   console.log('🧪 Testing trade validation with fixed amountUSD...')
   
+  // Use port 9000 for Docker or 3001 for local dev
+  const apiUrl = process.env.DOCKER_MODE ? 'http://localhost:9000' : 'http://localhost:3001'
+  
   const tradeData = {
     symbol: 'USDCUSD',
     side: 'BUY', 
@@ -11,10 +14,11 @@ const testTradeValidation = async () => {
     tradingPair: 'USDCUSD/USDC'
   }
   
-  console.log('🚀 Sending test trade:', tradeData)
+  console.log('🚀 Sending test trade to:', apiUrl)
+  console.log('🚀 Trade data:', tradeData)
   
   try {
-    const response = await fetch('http://localhost:3001/api/trading/execute-dex', {
+    const response = await fetch(`${apiUrl}/api/trading/execute-dex`, {
       method: 'POST',
       headers: { 'Content-Type': 'application/json' },
       body: JSON.stringify(tradeData)