Initial Version

frontend/src/App.tsx

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+import React from 'react';
+import { BrowserRouter as Router, Routes, Route, Link } from 'react-router-dom';
+import GroceryList from './components/GroceryList';
+import ShopList from './components/ShopList';
+import ShoppingEventForm from './components/ShoppingEventForm';
+import ShoppingEventList from './components/ShoppingEventList';
+import Dashboard from './components/Dashboard';
+
+function App() {
+  return (
+    <Router>
+      <div className="min-h-screen bg-gray-50">
+        {/* Navigation */}
+        <nav className="bg-white shadow-lg">
+          <div className="max-w-7xl mx-auto px-4">
+            <div className="flex justify-between h-16">
+              <div className="flex">
+                <div className="flex-shrink-0 flex items-center">
+                  <h1 className="text-xl font-bold text-gray-800">
+                    🛒 Grocery Tracker
+                  </h1>
+                </div>
+                <div className="hidden sm:ml-6 sm:flex sm:space-x-8">
+                  <Link
+                    to="/"
+                    className="text-gray-500 hover:text-gray-700 inline-flex items-center px-1 pt-1 text-sm font-medium"
+                  >
+                    Dashboard
+                  </Link>
+                  <Link
+                    to="/groceries"
+                    className="text-gray-500 hover:text-gray-700 inline-flex items-center px-1 pt-1 text-sm font-medium"
+                  >
+                    Groceries
+                  </Link>
+                  <Link
+                    to="/shops"
+                    className="text-gray-500 hover:text-gray-700 inline-flex items-center px-1 pt-1 text-sm font-medium"
+                  >
+                    Shops
+                  </Link>
+                  <Link
+                    to="/shopping-events"
+                    className="text-gray-500 hover:text-gray-700 inline-flex items-center px-1 pt-1 text-sm font-medium"
+                  >
+                    Shopping Events
+                  </Link>
+                  <Link
+                    to="/add-purchase"
+                    className="bg-blue-500 hover:bg-blue-700 text-white inline-flex items-center px-3 py-2 text-sm font-medium rounded-md"
+                  >
+                    Add Purchase
+                  </Link>
+                </div>
+              </div>
+            </div>
+          </div>
+        </nav>
+
+        {/* Main Content */}
+        <main className="max-w-7xl mx-auto py-6 sm:px-6 lg:px-8">
+          <Routes>
+            <Route path="/" element={<Dashboard />} />
+            <Route path="/groceries" element={<GroceryList />} />
+            <Route path="/shops" element={<ShopList />} />
+            <Route path="/shopping-events" element={<ShoppingEventList />} />
+            <Route path="/add-purchase" element={<ShoppingEventForm />} />
+          </Routes>
+        </main>
+      </div>
+    </Router>
+  );
+}
+
+export default App; 

frontend/src/components/Dashboard.tsx

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+import React from 'react';
+
+const Dashboard: React.FC = () => {
+  return (
+    <div className="space-y-6">
+      <div>
+        <h1 className="text-2xl font-bold text-gray-900">Dashboard</h1>
+        <p className="text-gray-600">Welcome to your grocery tracker!</p>
+      </div>
+
+      <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-4">
+        {/* Stats Cards */}
+        <div className="bg-white rounded-lg shadow p-6">
+          <div className="flex items-center">
+            <div className="p-2 bg-blue-100 rounded-md">
+              <svg className="w-6 h-6 text-blue-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M16 11V7a4 4 0 00-8 0v4M5 9h14l1 12H4L5 9z" />
+              </svg>
+            </div>
+            <div className="ml-4">
+              <p className="text-sm font-medium text-gray-600">Total Shopping Events</p>
+              <p className="text-2xl font-semibold text-gray-900">-</p>
+            </div>
+          </div>
+        </div>
+
+        <div className="bg-white rounded-lg shadow p-6">
+          <div className="flex items-center">
+            <div className="p-2 bg-green-100 rounded-md">
+              <svg className="w-6 h-6 text-green-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 8c-1.657 0-3 .895-3 2s1.343 2 3 2 3 .895 3 2-1.343 2-3 2m0-8c1.11 0 2.08.402 2.599 1M12 8V7m0 1v8m0 0v1m0-1c-1.11 0-2.08-.402-2.599-1" />
+              </svg>
+            </div>
+            <div className="ml-4">
+              <p className="text-sm font-medium text-gray-600">Total Spent</p>
+              <p className="text-2xl font-semibold text-gray-900">$-</p>
+            </div>
+          </div>
+        </div>
+
+        <div className="bg-white rounded-lg shadow p-6">
+          <div className="flex items-center">
+            <div className="p-2 bg-yellow-100 rounded-md">
+              <svg className="w-6 h-6 text-yellow-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M20 7l-8-4-8 4m16 0l-8 4m8-4v10l-8 4m0-10L4 7m8 4v10M4 7v10l8 4" />
+              </svg>
+            </div>
+            <div className="ml-4">
+              <p className="text-sm font-medium text-gray-600">Unique Items</p>
+              <p className="text-2xl font-semibold text-gray-900">-</p>
+            </div>
+          </div>
+        </div>
+
+        <div className="bg-white rounded-lg shadow p-6">
+          <div className="flex items-center">
+            <div className="p-2 bg-purple-100 rounded-md">
+              <svg className="w-6 h-6 text-purple-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M19 21V5a2 2 0 00-2-2H7a2 2 0 00-2 2v16m14 0h2m-2 0h-5m-9 0H3m2 0h5M9 7h1m-1 4h1m4-4h1m-1 4h1m-5 10v-5a1 1 0 011-1h2a1 1 0 011 1v5m-4 0h4" />
+              </svg>
+            </div>
+            <div className="ml-4">
+              <p className="text-sm font-medium text-gray-600">Shops Visited</p>
+              <p className="text-2xl font-semibold text-gray-900">-</p>
+            </div>
+          </div>
+        </div>
+      </div>
+
+      {/* Quick Actions */}
+      <div className="bg-white rounded-lg shadow">
+        <div className="px-6 py-4 border-b border-gray-200">
+          <h2 className="text-lg font-medium text-gray-900">Quick Actions</h2>
+        </div>
+        <div className="p-6">
+          <div className="grid grid-cols-1 md:grid-cols-3 gap-4">
+            <button className="flex items-center p-4 border border-gray-300 rounded-lg hover:bg-gray-50 transition-colors">
+              <div className="p-2 bg-blue-100 rounded-md mr-3">
+                <svg className="w-5 h-5 text-blue-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 6v6m0 0v6m0-6h6m-6 0H6" />
+                </svg>
+              </div>
+              <div>
+                <p className="font-medium text-gray-900">Add Purchase</p>
+                <p className="text-sm text-gray-600">Record a new shopping event</p>
+              </div>
+            </button>
+
+            <button className="flex items-center p-4 border border-gray-300 rounded-lg hover:bg-gray-50 transition-colors">
+              <div className="p-2 bg-green-100 rounded-md mr-3">
+                <svg className="w-5 h-5 text-green-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M20 7l-8-4-8 4m16 0l-8 4m8-4v10l-8 4m0-10L4 7m8 4v10M4 7v10l8 4" />
+                </svg>
+              </div>
+              <div>
+                <p className="font-medium text-gray-900">Add Grocery</p>
+                <p className="text-sm text-gray-600">Add a new grocery item</p>
+              </div>
+            </button>
+
+            <button className="flex items-center p-4 border border-gray-300 rounded-lg hover:bg-gray-50 transition-colors">
+              <div className="p-2 bg-purple-100 rounded-md mr-3">
+                <svg className="w-5 h-5 text-purple-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M19 21V5a2 2 0 00-2-2H7a2 2 0 00-2 2v16m14 0h2m-2 0h-5m-9 0H3m2 0h5M9 7h1m-1 4h1m4-4h1m-1 4h1m-5 10v-5a1 1 0 011-1h2a1 1 0 011 1v5m-4 0h4" />
+                </svg>
+              </div>
+              <div>
+                <p className="font-medium text-gray-900">Add Shop</p>
+                <p className="text-sm text-gray-600">Register a new shop</p>
+              </div>
+            </button>
+          </div>
+        </div>
+      </div>
+
+      {/* Recent Activity */}
+      <div className="bg-white rounded-lg shadow">
+        <div className="px-6 py-4 border-b border-gray-200">
+          <h2 className="text-lg font-medium text-gray-900">Recent Shopping Events</h2>
+        </div>
+        <div className="p-6">
+          <div className="text-center py-8">
+            <svg className="mx-auto h-12 w-12 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 48 48">
+              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M20 7l-8-4-8 4m16 0l-8 4m8-4v10l-8 4m0-10L4 7m8 4v10M4 7v10l8 4" />
+            </svg>
+            <h3 className="mt-2 text-sm font-medium text-gray-900">No shopping events yet</h3>
+            <p className="mt-1 text-sm text-gray-500">Get started by adding your first purchase!</p>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+};
+
+export default Dashboard; 

frontend/src/components/GroceryList.tsx

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+import React, { useState, useEffect } from 'react';
+import { Grocery } from '../types';
+import { groceryApi } from '../services/api';
+
+const GroceryList: React.FC = () => {
+  const [groceries, setGroceries] = useState<Grocery[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState('');
+
+  useEffect(() => {
+    fetchGroceries();
+  }, []);
+
+  const fetchGroceries = async () => {
+    try {
+      setLoading(true);
+      const response = await groceryApi.getAll();
+      setGroceries(response.data);
+    } catch (err) {
+      setError('Failed to fetch groceries');
+      console.error('Error fetching groceries:', err);
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const handleDelete = async (id: number) => {
+    if (window.confirm('Are you sure you want to delete this grocery item?')) {
+      try {
+        await groceryApi.delete(id);
+        setGroceries(groceries.filter(g => g.id !== id));
+      } catch (err) {
+        setError('Failed to delete grocery');
+        console.error('Error deleting grocery:', err);
+      }
+    }
+  };
+
+  if (loading) {
+    return (
+      <div className="flex justify-center items-center h-64">
+        <div className="animate-spin rounded-full h-12 w-12 border-b-2 border-blue-500"></div>
+      </div>
+    );
+  }
+
+  return (
+    <div className="space-y-6">
+      <div className="flex justify-between items-center">
+        <h1 className="text-2xl font-bold text-gray-900">Groceries</h1>
+        <button className="bg-blue-500 hover:bg-blue-700 text-white font-bold py-2 px-4 rounded">
+          Add New Grocery
+        </button>
+      </div>
+
+      {error && (
+        <div className="bg-red-50 border border-red-200 text-red-700 px-4 py-3 rounded">
+          {error}
+        </div>
+      )}
+
+      <div className="bg-white shadow rounded-lg overflow-hidden">
+        {groceries.length === 0 ? (
+          <div className="text-center py-12">
+            <svg className="mx-auto h-12 w-12 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 48 48">
+              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M20 7l-8-4-8 4m16 0l-8 4m8-4v10l-8 4m0-10L4 7m8 4v10M4 7v10l8 4" />
+            </svg>
+            <h3 className="mt-2 text-sm font-medium text-gray-900">No groceries</h3>
+            <p className="mt-1 text-sm text-gray-500">Get started by adding your first grocery item.</p>
+          </div>
+        ) : (
+          <table className="min-w-full divide-y divide-gray-200">
+            <thead className="bg-gray-50">
+              <tr>
+                <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
+                  Name
+                </th>
+                <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
+                  Price
+                </th>
+                <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
+                  Category
+                </th>
+                <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
+                  Weight
+                </th>
+                <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
+                  Organic
+                </th>
+                <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
+                  Actions
+                </th>
+              </tr>
+            </thead>
+            <tbody className="bg-white divide-y divide-gray-200">
+              {groceries.map((grocery) => (
+                <tr key={grocery.id} className="hover:bg-gray-50">
+                  <td className="px-6 py-4 whitespace-nowrap">
+                    <div className="text-sm font-medium text-gray-900">{grocery.name}</div>
+                  </td>
+                  <td className="px-6 py-4 whitespace-nowrap">
+                    <div className="text-sm text-gray-900">${grocery.price.toFixed(2)}</div>
+                  </td>
+                  <td className="px-6 py-4 whitespace-nowrap">
+                    <span className="px-2 inline-flex text-xs leading-5 font-semibold rounded-full bg-blue-100 text-blue-800">
+                      {grocery.category}
+                    </span>
+                  </td>
+                  <td className="px-6 py-4 whitespace-nowrap text-sm text-gray-900">
+                    {grocery.weight ? `${grocery.weight}${grocery.weight_unit}` : '-'}
+                  </td>
+                  <td className="px-6 py-4 whitespace-nowrap">
+                    <span className={`px-2 inline-flex text-xs leading-5 font-semibold rounded-full ${
+                      grocery.organic 
+                        ? 'bg-green-100 text-green-800' 
+                        : 'bg-gray-100 text-gray-800'
+                    }`}>
+                      {grocery.organic ? 'Organic' : 'Conventional'}
+                    </span>
+                  </td>
+                  <td className="px-6 py-4 whitespace-nowrap text-sm font-medium">
+                    <button className="text-indigo-600 hover:text-indigo-900 mr-3">
+                      Edit
+                    </button>
+                    <button 
+                      onClick={() => handleDelete(grocery.id)}
+                      className="text-red-600 hover:text-red-900"
+                    >
+                      Delete
+                    </button>
+                  </td>
+                </tr>
+              ))}
+            </tbody>
+          </table>
+        )}
+      </div>
+    </div>
+  );
+};
+
+export default GroceryList; 

frontend/src/components/ShopList.tsx

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+import React, { useState, useEffect } from 'react';
+import { Shop } from '../types';
+import { shopApi } from '../services/api';
+
+const ShopList: React.FC = () => {
+  const [shops, setShops] = useState<Shop[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState('');
+
+  useEffect(() => {
+    fetchShops();
+  }, []);
+
+  const fetchShops = async () => {
+    try {
+      setLoading(true);
+      const response = await shopApi.getAll();
+      setShops(response.data);
+    } catch (err) {
+      setError('Failed to fetch shops');
+      console.error('Error fetching shops:', err);
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  if (loading) {
+    return (
+      <div className="flex justify-center items-center h-64">
+        <div className="animate-spin rounded-full h-12 w-12 border-b-2 border-blue-500"></div>
+      </div>
+    );
+  }
+
+  return (
+    <div className="space-y-6">
+      <div className="flex justify-between items-center">
+        <h1 className="text-2xl font-bold text-gray-900">Shops</h1>
+        <button className="bg-blue-500 hover:bg-blue-700 text-white font-bold py-2 px-4 rounded">
+          Add New Shop
+        </button>
+      </div>
+
+      {error && (
+        <div className="bg-red-50 border border-red-200 text-red-700 px-4 py-3 rounded">
+          {error}
+        </div>
+      )}
+
+      <div className="bg-white shadow rounded-lg overflow-hidden">
+        {shops.length === 0 ? (
+          <div className="text-center py-12">
+            <svg className="mx-auto h-12 w-12 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 48 48">
+              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M19 21V5a2 2 0 00-2-2H7a2 2 0 00-2 2v16m14 0h2m-2 0h-5m-9 0H3m2 0h5M9 7h1m-1 4h1m4-4h1m-1 4h1m-5 10v-5a1 1 0 011-1h2a1 1 0 011 1v5m-4 0h4" />
+            </svg>
+            <h3 className="mt-2 text-sm font-medium text-gray-900">No shops</h3>
+            <p className="mt-1 text-sm text-gray-500">Get started by adding your first shop.</p>
+          </div>
+        ) : (
+          <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6 p-6">
+            {shops.map((shop) => (
+              <div key={shop.id} className="bg-white border border-gray-200 rounded-lg p-6 hover:shadow-md transition-shadow">
+                <div className="flex items-center justify-between mb-4">
+                  <h3 className="text-lg font-medium text-gray-900">{shop.name}</h3>
+                  <div className="flex space-x-2">
+                    <button className="text-indigo-600 hover:text-indigo-900 text-sm">
+                      Edit
+                    </button>
+                    <button className="text-red-600 hover:text-red-900 text-sm">
+                      Delete
+                    </button>
+                  </div>
+                </div>
+                
+                <div className="space-y-2">
+                  <div className="flex items-center text-sm text-gray-600">
+                    <svg className="w-4 h-4 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                      <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M17.657 16.657L13.414 20.9a1.998 1.998 0 01-2.827 0l-4.244-4.243a8 8 0 1111.314 0z" />
+                      <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M15 11a3 3 0 11-6 0 3 3 0 016 0z" />
+                    </svg>
+                    {shop.city}
+                  </div>
+                  
+                  {shop.address && (
+                    <div className="flex items-start text-sm text-gray-600">
+                      <svg className="w-4 h-4 mr-2 mt-0.5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M3 8l7.89 7.89a2 2 0 002.83 0L21 8M5 19h14a2 2 0 002-2V7a2 2 0 00-2-2H5a2 2 0 00-2 2v10a2 2 0 002 2z" />
+                      </svg>
+                      {shop.address}
+                    </div>
+                  )}
+                  
+                  <div className="flex items-center text-sm text-gray-600">
+                    <svg className="w-4 h-4 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                      <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M8 7V3m8 4V3m-9 8h10M5 21h14a2 2 0 002-2V7a2 2 0 00-2-2H5a2 2 0 00-2 2v12a2 2 0 002 2z" />
+                    </svg>
+                    Added {new Date(shop.created_at).toLocaleDateString()}
+                  </div>
+                </div>
+              </div>
+            ))}
+          </div>
+        )}
+      </div>
+    </div>
+  );
+};
+
+export default ShopList; 

frontend/src/components/ShoppingEventForm.tsx

@@ -0,0 +1,253 @@
+import React, { useState, useEffect } from 'react';
+import { Shop, Grocery, ShoppingEventCreate, GroceryInEvent } from '../types';
+import { shopApi, groceryApi, shoppingEventApi } from '../services/api';
+
+const ShoppingEventForm: React.FC = () => {
+  const [shops, setShops] = useState<Shop[]>([]);
+  const [groceries, setGroceries] = useState<Grocery[]>([]);
+  const [loading, setLoading] = useState(false);
+  const [message, setMessage] = useState('');
+  
+  const [formData, setFormData] = useState<ShoppingEventCreate>({
+    shop_id: 0,
+    date: new Date().toISOString().split('T')[0],
+    total_amount: undefined,
+    notes: '',
+    groceries: []
+  });
+
+  const [selectedGroceries, setSelectedGroceries] = useState<GroceryInEvent[]>([]);
+  const [newGroceryItem, setNewGroceryItem] = useState<GroceryInEvent>({
+    grocery_id: 0,
+    amount: 1
+  });
+
+  useEffect(() => {
+    fetchShops();
+    fetchGroceries();
+  }, []);
+
+  const fetchShops = async () => {
+    try {
+      const response = await shopApi.getAll();
+      setShops(response.data);
+    } catch (error) {
+      console.error('Error fetching shops:', error);
+    }
+  };
+
+  const fetchGroceries = async () => {
+    try {
+      const response = await groceryApi.getAll();
+      setGroceries(response.data);
+    } catch (error) {
+      console.error('Error fetching groceries:', error);
+    }
+  };
+
+  const addGroceryToEvent = () => {
+    if (newGroceryItem.grocery_id > 0 && newGroceryItem.amount > 0) {
+      setSelectedGroceries([...selectedGroceries, { ...newGroceryItem }]);
+      setNewGroceryItem({ grocery_id: 0, amount: 1 });
+    }
+  };
+
+  const removeGroceryFromEvent = (index: number) => {
+    setSelectedGroceries(selectedGroceries.filter((_, i) => i !== index));
+  };
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+    setLoading(true);
+    setMessage('');
+
+    try {
+      const eventData = {
+        ...formData,
+        groceries: selectedGroceries
+      };
+
+      await shoppingEventApi.create(eventData);
+      setMessage('Shopping event created successfully!');
+      
+      // Reset form
+      setFormData({
+        shop_id: 0,
+        date: new Date().toISOString().split('T')[0],
+        total_amount: undefined,
+        notes: '',
+        groceries: []
+      });
+      setSelectedGroceries([]);
+    } catch (error) {
+      setMessage('Error creating shopping event. Please try again.');
+      console.error('Error:', error);
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const getGroceryName = (id: number) => {
+    const grocery = groceries.find(g => g.id === id);
+    return grocery ? grocery.name : 'Unknown';
+  };
+
+  return (
+    <div className="max-w-4xl mx-auto">
+      <div className="bg-white shadow rounded-lg">
+        <div className="px-4 py-5 sm:p-6">
+          <h3 className="text-lg leading-6 font-medium text-gray-900 mb-4">
+            Add New Purchase
+          </h3>
+
+          {message && (
+            <div className={`mb-4 p-4 rounded-md ${
+              message.includes('Error') 
+                ? 'bg-red-50 text-red-700' 
+                : 'bg-green-50 text-green-700'
+            }`}>
+              {message}
+            </div>
+          )}
+
+          <form onSubmit={handleSubmit} className="space-y-6">
+            {/* Shop Selection */}
+            <div>
+              <label className="block text-sm font-medium text-gray-700 mb-2">
+                Shop
+              </label>
+              <select
+                value={formData.shop_id}
+                onChange={(e) => setFormData({...formData, shop_id: parseInt(e.target.value)})}
+                className="w-full border border-gray-300 rounded-md px-3 py-2 focus:outline-none focus:ring-2 focus:ring-blue-500"
+                required
+              >
+                <option value={0}>Select a shop</option>
+                {shops.map(shop => (
+                  <option key={shop.id} value={shop.id}>
+                    {shop.name} - {shop.city}
+                  </option>
+                ))}
+              </select>
+            </div>
+
+            {/* Date */}
+            <div>
+              <label className="block text-sm font-medium text-gray-700 mb-2">
+                Date
+              </label>
+              <input
+                type="date"
+                value={formData.date}
+                onChange={(e) => setFormData({...formData, date: e.target.value})}
+                className="w-full border border-gray-300 rounded-md px-3 py-2 focus:outline-none focus:ring-2 focus:ring-blue-500"
+                required
+              />
+            </div>
+
+            {/* Add Groceries Section */}
+            <div>
+              <label className="block text-sm font-medium text-gray-700 mb-2">
+                Add Groceries
+              </label>
+              <div className="flex space-x-2 mb-4">
+                <select
+                  value={newGroceryItem.grocery_id}
+                  onChange={(e) => setNewGroceryItem({...newGroceryItem, grocery_id: parseInt(e.target.value)})}
+                  className="flex-1 border border-gray-300 rounded-md px-3 py-2 focus:outline-none focus:ring-2 focus:ring-blue-500"
+                >
+                  <option value={0}>Select a grocery</option>
+                  {groceries.map(grocery => (
+                    <option key={grocery.id} value={grocery.id}>
+                      {grocery.name} - ${grocery.price} ({grocery.category})
+                    </option>
+                  ))}
+                </select>
+                <input
+                  type="number"
+                  step="0.1"
+                  min="0.1"
+                  placeholder="Amount"
+                  value={newGroceryItem.amount}
+                  onChange={(e) => setNewGroceryItem({...newGroceryItem, amount: parseFloat(e.target.value)})}
+                  className="w-24 border border-gray-300 rounded-md px-3 py-2 focus:outline-none focus:ring-2 focus:ring-blue-500"
+                />
+                <button
+                  type="button"
+                  onClick={addGroceryToEvent}
+                  className="bg-green-500 hover:bg-green-700 text-white px-4 py-2 rounded-md"
+                >
+                  Add
+                </button>
+              </div>
+
+              {/* Selected Groceries List */}
+              {selectedGroceries.length > 0 && (
+                <div className="bg-gray-50 rounded-md p-4">
+                  <h4 className="font-medium text-gray-700 mb-2">Selected Items:</h4>
+                  {selectedGroceries.map((item, index) => (
+                    <div key={index} className="flex justify-between items-center py-2 border-b last:border-b-0">
+                      <span>
+                        {getGroceryName(item.grocery_id)} x {item.amount}
+                      </span>
+                      <button
+                        type="button"
+                        onClick={() => removeGroceryFromEvent(index)}
+                        className="text-red-500 hover:text-red-700"
+                      >
+                        Remove
+                      </button>
+                    </div>
+                  ))}
+                </div>
+              )}
+            </div>
+
+            {/* Total Amount */}
+            <div>
+              <label className="block text-sm font-medium text-gray-700 mb-2">
+                Total Amount (optional)
+              </label>
+              <input
+                type="number"
+                step="0.01"
+                min="0"
+                placeholder="0.00"
+                value={formData.total_amount || ''}
+                onChange={(e) => setFormData({...formData, total_amount: e.target.value ? parseFloat(e.target.value) : undefined})}
+                className="w-full border border-gray-300 rounded-md px-3 py-2 focus:outline-none focus:ring-2 focus:ring-blue-500"
+              />
+            </div>
+
+            {/* Notes */}
+            <div>
+              <label className="block text-sm font-medium text-gray-700 mb-2">
+                Notes (optional)
+              </label>
+              <textarea
+                rows={3}
+                value={formData.notes}
+                onChange={(e) => setFormData({...formData, notes: e.target.value})}
+                className="w-full border border-gray-300 rounded-md px-3 py-2 focus:outline-none focus:ring-2 focus:ring-blue-500"
+                placeholder="Any additional notes about this purchase..."
+              />
+            </div>
+
+            {/* Submit Button */}
+            <div>
+              <button
+                type="submit"
+                disabled={loading || formData.shop_id === 0 || selectedGroceries.length === 0}
+                className="w-full bg-blue-500 hover:bg-blue-700 disabled:bg-gray-300 text-white font-bold py-2 px-4 rounded focus:outline-none focus:shadow-outline"
+              >
+                {loading ? 'Creating...' : 'Create Shopping Event'}
+              </button>
+            </div>
+          </form>
+        </div>
+      </div>
+    </div>
+  );
+};
+
+export default ShoppingEventForm; 

frontend/src/components/ShoppingEventList.tsx

@@ -0,0 +1,123 @@
+import React, { useState, useEffect } from 'react';
+import { ShoppingEvent } from '../types';
+import { shoppingEventApi } from '../services/api';
+
+const ShoppingEventList: React.FC = () => {
+  const [events, setEvents] = useState<ShoppingEvent[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState('');
+
+  useEffect(() => {
+    fetchEvents();
+  }, []);
+
+  const fetchEvents = async () => {
+    try {
+      setLoading(true);
+      const response = await shoppingEventApi.getAll();
+      setEvents(response.data);
+    } catch (err) {
+      setError('Failed to fetch shopping events');
+      console.error('Error fetching events:', err);
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  if (loading) {
+    return (
+      <div className="flex justify-center items-center h-64">
+        <div className="animate-spin rounded-full h-12 w-12 border-b-2 border-blue-500"></div>
+      </div>
+    );
+  }
+
+  return (
+    <div className="space-y-6">
+      <div className="flex justify-between items-center">
+        <h1 className="text-2xl font-bold text-gray-900">Shopping Events</h1>
+        <button className="bg-blue-500 hover:bg-blue-700 text-white font-bold py-2 px-4 rounded">
+          Add New Event
+        </button>
+      </div>
+
+      {error && (
+        <div className="bg-red-50 border border-red-200 text-red-700 px-4 py-3 rounded">
+          {error}
+        </div>
+      )}
+
+      <div className="bg-white shadow rounded-lg overflow-hidden">
+        {events.length === 0 ? (
+          <div className="text-center py-12">
+            <svg className="mx-auto h-12 w-12 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 48 48">
+              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M16 11V7a4 4 0 00-8 0v4M5 9h14l1 12H4L5 9z" />
+            </svg>
+            <h3 className="mt-2 text-sm font-medium text-gray-900">No shopping events</h3>
+            <p className="mt-1 text-sm text-gray-500">Get started by recording your first purchase.</p>
+          </div>
+        ) : (
+          <div className="space-y-4 p-6">
+            {events.map((event) => (
+              <div key={event.id} className="border border-gray-200 rounded-lg p-6 hover:shadow-md transition-shadow">
+                <div className="flex justify-between items-start mb-4">
+                  <div>
+                    <h3 className="text-lg font-medium text-gray-900">{event.shop.name}</h3>
+                    <p className="text-sm text-gray-600">{event.shop.city}</p>
+                  </div>
+                  <div className="text-right">
+                    <p className="text-sm font-medium text-gray-900">
+                      {new Date(event.date).toLocaleDateString()}
+                    </p>
+                    {event.total_amount && (
+                      <p className="text-lg font-semibold text-green-600">
+                        ${event.total_amount.toFixed(2)}
+                      </p>
+                    )}
+                  </div>
+                </div>
+
+                {event.groceries.length > 0 && (
+                  <div className="mb-4">
+                    <h4 className="text-sm font-medium text-gray-700 mb-2">Items Purchased:</h4>
+                    <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-2">
+                      {event.groceries.map((grocery) => (
+                        <div key={grocery.id} className="bg-gray-50 rounded px-3 py-2">
+                          <span className="text-sm text-gray-900">{grocery.name}</span>
+                          <span className="text-xs text-gray-600 ml-2">${grocery.price}</span>
+                        </div>
+                      ))}
+                    </div>
+                  </div>
+                )}
+
+                {event.notes && (
+                  <div className="mb-4">
+                    <h4 className="text-sm font-medium text-gray-700 mb-1">Notes:</h4>
+                    <p className="text-sm text-gray-600">{event.notes}</p>
+                  </div>
+                )}
+
+                <div className="flex justify-between items-center text-sm">
+                  <span className="text-gray-500">
+                    Event #{event.id} • {new Date(event.created_at).toLocaleDateString()}
+                  </span>
+                  <div className="flex space-x-2">
+                    <button className="text-indigo-600 hover:text-indigo-900">
+                      View Details
+                    </button>
+                    <button className="text-red-600 hover:text-red-900">
+                      Delete
+                    </button>
+                  </div>
+                </div>
+              </div>
+            ))}
+          </div>
+        )}
+      </div>
+    </div>
+  );
+};
+
+export default ShoppingEventList; 

frontend/src/index.css

@@ -0,0 +1,12 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+body {
+  margin: 0;
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
+    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
+    sans-serif;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+} 

frontend/src/index.tsx

@@ -0,0 +1,13 @@
+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import './index.css';
+import App from './App';
+
+const root = ReactDOM.createRoot(
+  document.getElementById('root') as HTMLElement
+);
+root.render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>
+); 

frontend/src/services/api.ts

@@ -0,0 +1,50 @@
+import axios from 'axios';
+import { Grocery, GroceryCreate, Shop, ShopCreate, ShoppingEvent, ShoppingEventCreate } from '../types';
+
+const BASE_URL = 'http://localhost:8000';
+
+const api = axios.create({
+  baseURL: BASE_URL,
+  headers: {
+    'Content-Type': 'application/json',
+  },
+});
+
+// Grocery API functions
+export const groceryApi = {
+  getAll: () => api.get<Grocery[]>('/groceries/'),
+  getById: (id: number) => api.get<Grocery>(`/groceries/${id}`),
+  create: (grocery: GroceryCreate) => api.post<Grocery>('/groceries/', grocery),
+  update: (id: number, grocery: Partial<GroceryCreate>) => 
+    api.put<Grocery>(`/groceries/${id}`, grocery),
+  delete: (id: number) => api.delete(`/groceries/${id}`),
+};
+
+// Shop API functions
+export const shopApi = {
+  getAll: () => api.get<Shop[]>('/shops/'),
+  getById: (id: number) => api.get<Shop>(`/shops/${id}`),
+  create: (shop: ShopCreate) => api.post<Shop>('/shops/', shop),
+  update: (id: number, shop: Partial<ShopCreate>) => 
+    api.put<Shop>(`/shops/${id}`, shop),
+  delete: (id: number) => api.delete(`/shops/${id}`),
+};
+
+// Shopping Event API functions
+export const shoppingEventApi = {
+  getAll: () => api.get<ShoppingEvent[]>('/shopping-events/'),
+  getById: (id: number) => api.get<ShoppingEvent>(`/shopping-events/${id}`),
+  create: (event: ShoppingEventCreate) => 
+    api.post<ShoppingEvent>('/shopping-events/', event),
+  update: (id: number, event: Partial<ShoppingEventCreate>) => 
+    api.put<ShoppingEvent>(`/shopping-events/${id}`, event),
+  delete: (id: number) => api.delete(`/shopping-events/${id}`),
+};
+
+// Statistics API functions
+export const statsApi = {
+  getCategories: () => api.get('/stats/categories'),
+  getShops: () => api.get('/stats/shops'),
+};
+
+export default api; 

frontend/src/types/index.ts

@@ -0,0 +1,72 @@
+export interface Grocery {
+  id: number;
+  name: string;
+  price: number;
+  category: string;
+  organic: boolean;
+  weight?: number;
+  weight_unit: string;
+  created_at: string;
+  updated_at?: string;
+}
+
+export interface GroceryCreate {
+  name: string;
+  price: number;
+  category: string;
+  organic: boolean;
+  weight?: number;
+  weight_unit: string;
+}
+
+export interface Shop {
+  id: number;
+  name: string;
+  city: string;
+  address?: string;
+  created_at: string;
+}
+
+export interface ShopCreate {
+  name: string;
+  city: string;
+  address?: string;
+}
+
+export interface GroceryInEvent {
+  grocery_id: number;
+  amount: number;
+}
+
+export interface ShoppingEvent {
+  id: number;
+  shop_id: number;
+  date: string;
+  total_amount?: number;
+  notes?: string;
+  created_at: string;
+  shop: Shop;
+  groceries: Grocery[];
+}
+
+export interface ShoppingEventCreate {
+  shop_id: number;
+  date?: string;
+  total_amount?: number;
+  notes?: string;
+  groceries: GroceryInEvent[];
+}
+
+export interface CategoryStats {
+  category: string;
+  total_spent: number;
+  item_count: number;
+  avg_price: number;
+}
+
+export interface ShopStats {
+  shop_name: string;
+  total_spent: number;
+  visit_count: number;
+  avg_per_visit: number;
+}