first commit of refactor

backend/controllers/AddressController.js

@@ -0,0 +1,82 @@
+import * as AddressModel from '../models/AddressModel.js';
+
+/**
+ * Create a new address
+ */
+export async function create(req, res) {
+  const { address, label } = req.body;
+  const user_id = req.user_id; // From authenticate middleware
+
+  console.log(`User ${user_id} creating address: ${address}`);
+
+  if (!address) {
+    return res.status(400).json({
+      error: 'VALIDATION_ERROR',
+      message: 'Address is required'
+    });
+  }
+
+  // Validation:  ETH address format
+  if (!/^0x[a-fA-F0-9]{40}$/.test(address)) {
+    return res.status(400).json({
+      error: 'VALIDATION_ERROR',
+      message: 'Invalid Ethereum address format'
+    });
+  }
+
+  try {
+    const newAddress = await AddressModel.create(user_id, address, label || null);
+    console.log(`Address created with ID: ${newAddress.id}`);
+    return res.status(201).json(newAddress);
+  } catch (error) {
+    // Handle duplicate address (unique constraint violation)
+    if (error.code === '23505') {
+      return res.status(400).json({
+        error: 'VALIDATION_ERROR',
+        message: 'You are already tracking this address'
+      });
+    }
+    throw error;
+  }
+}
+
+
+export async function list(req, res) {
+  const user_id = req.user_id; // From authenticate middleware
+  
+  console.log(`User ${user_id} listing addresses`);
+  
+  const addresses = await AddressModel.listByUser(user_id);
+  
+  console.log(`Found ${addresses.length} addresses for user`);
+  
+  return res.json(addresses);
+}
+
+export async function remove(req, res) {
+  const addressId = parseInt(req.params.addressId);
+  const user_id = req.user_id; // From authenticate middleware
+
+  console.log(`User ${user_id} deleting address ID: ${addressId}`);
+
+  if (isNaN(addressId)) {
+    return res.status(400).json({
+      error: 'VALIDATION_ERROR',
+      message: 'Invalid address ID'
+    });
+  }
+
+  const deleted = await AddressModel.remove(addressId, user_id);
+
+  if (!deleted) {
+    console.log(`Address ${addressId} not found or not owned by user`);
+    return res.status(404).json({
+      error: 'NOT_FOUND',
+      message: 'Address not found'
+    });
+  }
+
+  console.log(`Address ${addressId} deleted`);
+  return res.status(204).send();
+}
+