Autosave: 20260313-193504

core/admin.py

@@ -1,3 +1,8 @@
 from django.contrib import admin
+from .models import UserProfile, Category, Product, Order, OrderItem
 
-# Register your models here.
+admin.site.register(UserProfile)
+admin.site.register(Category)
+admin.site.register(Product)
+admin.site.register(Order)
+admin.site.register(OrderItem)

core/migrations/0001_initial.py

@@ -0,0 +1,67 @@
+# Generated by Django 5.2.7 on 2026-03-13 07:23
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Category',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=100)),
+                ('slug', models.SlugField(unique=True)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Order',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('status', models.CharField(choices=[('pending', 'Pending'), ('shipped', 'Shipped'), ('delivered', 'Delivered')], default='pending', max_length=20)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('buyer', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='orders', to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Product',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=200)),
+                ('description', models.TextField()),
+                ('price', models.DecimalField(decimal_places=2, max_digits=10)),
+                ('stock', models.IntegerField(default=0)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('category', models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='products', to='core.category')),
+                ('seller', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='products', to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='OrderItem',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('quantity', models.IntegerField()),
+                ('price', models.DecimalField(decimal_places=2, max_digits=10)),
+                ('order', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='items', to='core.order')),
+                ('product', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='core.product')),
+            ],
+        ),
+        migrations.CreateModel(
+            name='UserProfile',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('is_seller', models.BooleanField(default=False)),
+                ('phone_number', models.CharField(blank=True, max_length=20)),
+                ('address', models.TextField(blank=True)),
+                ('user', models.OneToOneField(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+    ]

core/models.py

@@ -1,3 +1,47 @@
 from django.db import models
+from django.contrib.auth.models import User
 
-# Create your models here.
+class UserProfile(models.Model):
+    user = models.OneToOneField(User, on_delete=models.CASCADE)
+    is_seller = models.BooleanField(default=False)
+    phone_number = models.CharField(max_length=20, blank=True)
+    address = models.TextField(blank=True)
+
+    def __str__(self):
+        return self.user.username
+
+class Category(models.Model):
+    name = models.CharField(max_length=100)
+    slug = models.SlugField(unique=True)
+
+    def __str__(self):
+        return self.name
+
+class Product(models.Model):
+    seller = models.ForeignKey(User, on_delete=models.CASCADE, related_name='products')
+    category = models.ForeignKey(Category, on_delete=models.SET_NULL, null=True, related_name='products')
+    name = models.CharField(max_length=200)
+    description = models.TextField()
+    price = models.DecimalField(max_digits=10, decimal_places=2)
+    stock = models.IntegerField(default=0)
+    created_at = models.DateTimeField(auto_now_add=True)
+
+    def __str__(self):
+        return self.name
+
+class Order(models.Model):
+    buyer = models.ForeignKey(User, on_delete=models.CASCADE, related_name='orders')
+    status = models.CharField(max_length=20, choices=[('pending', 'Pending'), ('shipped', 'Shipped'), ('delivered', 'Delivered')], default='pending')
+    created_at = models.DateTimeField(auto_now_add=True)
+
+    def __str__(self):
+        return f"Order {self.id} by {self.buyer.username}"
+
+class OrderItem(models.Model):
+    order = models.ForeignKey(Order, on_delete=models.CASCADE, related_name='items')
+    product = models.ForeignKey(Product, on_delete=models.CASCADE)
+    quantity = models.IntegerField()
+    price = models.DecimalField(max_digits=10, decimal_places=2)
+
+    def __str__(self):
+        return f"{self.quantity} x {self.product.name} in Order {self.order.id}"

core/templates/core/buyer_dashboard.html

@@ -0,0 +1,38 @@
+{% extends "core/dashboard_base.html" %}
+
+{% block title %}Buyer Dashboard | Ethio-gebeya{% endblock %}
+
+{% block dashboard_content %}
+<section class="grid cards-3">
+  <article class="card">
+    <p class="label">Total Orders</p>
+    <p class="value">{{ total_orders }}</p>
+  </article>
+</section>
+
+<section class="card" style="margin-top: 1rem;">
+  <h2 style="margin: 0 0 0.75rem;">Recent Orders</h2>
+  {% if recent_orders %}
+  <table>
+    <thead>
+      <tr>
+        <th>Order</th>
+        <th>Status</th>
+        <th>Date</th>
+      </tr>
+    </thead>
+    <tbody>
+      {% for order in recent_orders %}
+      <tr>
+        <td>#{{ order.id }}</td>
+        <td>{{ order.get_status_display }}</td>
+        <td>{{ order.created_at|date:"Y-m-d" }}</td>
+      </tr>
+      {% endfor %}
+    </tbody>
+  </table>
+  {% else %}
+  <p>No orders yet.</p>
+  {% endif %}
+</section>
+{% endblock %}

core/templates/core/cart.html

@@ -0,0 +1,47 @@
+{% extends "base.html" %}
+
+{% block title %}Shopping Cart | Ethio-gebeya{% endblock %}
+
+{% block content %}
+<main class="container py-4">
+    <h1 class="mb-4">Shopping Cart</h1>
+    
+    {% if items %}
+    <table class="table">
+        <thead>
+            <tr>
+                <th>Product</th>
+                <th>Quantity</th>
+                <th>Price</th>
+                <th>Subtotal</th>
+                <th>Action</th>
+            </tr>
+        </thead>
+        <tbody>
+            {% for item in items %}
+            <tr>
+                <td>{{ item.product.name }}</td>
+                <td>{{ item.quantity }}</td>
+                <td>{{ item.product.price }} ETB</td>
+                <td>{{ item.subtotal }} ETB</td>
+                <td><a href="{% url 'remove_from_cart' item.product.pk %}" class="btn btn-danger btn-sm">Remove</a></td>
+            </tr>
+            {% endfor %}
+        </tbody>
+    </table>
+    <div class="mt-3">
+        <h4>Total: {{ total_price }} ETB</h4>
+        <form method="post" action="{% url 'checkout' %}">
+            {% csrf_token %}
+            <button type="submit" class="btn btn-primary">Proceed to Checkout</button>
+        </form>
+    </div>
+    {% else %}
+    <p>Your cart is empty.</p>
+    {% endif %}
+    
+    <div class="mt-4">
+        <a href="{% url 'home' %}" class="btn btn-secondary">Continue Shopping</a>
+    </div>
+</main>
+{% endblock %}

core/templates/core/dashboard_base.html

@@ -0,0 +1,159 @@
+{% extends "base.html" %}
+
+{% block head %}
+<style>
+  :root {
+    --bg: #f8fafc;
+    --text: #0f172a;
+    --muted: #64748b;
+    --surface: #ffffff;
+    --border: #e2e8f0;
+    --primary: #ea580c;
+  }
+
+  * {
+    box-sizing: border-box;
+  }
+
+  body {
+    margin: 0;
+    font-family: Inter, "Segoe UI", sans-serif;
+    background: var(--bg);
+    color: var(--text);
+  }
+
+  .layout {
+    min-height: 100vh;
+    display: grid;
+    grid-template-columns: 250px 1fr;
+  }
+
+  .sidebar {
+    background: #0f172a;
+    color: #f8fafc;
+    padding: 1.25rem 1rem;
+  }
+
+  .brand {
+    font-size: 1.2rem;
+    font-weight: 700;
+    margin: 0 0 1rem;
+  }
+
+  .menu a {
+    display: block;
+    text-decoration: none;
+    color: #cbd5e1;
+    padding: 0.65rem 0.75rem;
+    border-radius: 10px;
+    margin-bottom: 0.4rem;
+  }
+
+  .menu a.active,
+  .menu a:hover {
+    color: #fff;
+    background: rgba(255, 255, 255, 0.12);
+  }
+
+  .content-wrap {
+    padding: 1.25rem;
+  }
+
+  .topbar {
+    background: var(--surface);
+    border: 1px solid var(--border);
+    border-radius: 14px;
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    padding: 0.85rem 1rem;
+    margin-bottom: 1rem;
+  }
+
+  .topbar h1 {
+    margin: 0;
+    font-size: 1.2rem;
+  }
+
+  .logout {
+    text-decoration: none;
+    background: #fff7ed;
+    color: var(--primary);
+    border: 1px solid #fdba74;
+    border-radius: 10px;
+    padding: 0.5rem 0.75rem;
+    font-weight: 600;
+  }
+
+  .grid {
+    display: grid;
+    gap: 1rem;
+  }
+
+  .cards-3 {
+    grid-template-columns: repeat(3, minmax(0, 1fr));
+  }
+
+  .card {
+    background: var(--surface);
+    border: 1px solid var(--border);
+    border-radius: 14px;
+    padding: 1rem;
+  }
+
+  .label {
+    color: var(--muted);
+    font-size: 0.9rem;
+    margin-bottom: 0.35rem;
+  }
+
+  .value {
+    font-size: 1.5rem;
+    font-weight: 700;
+    margin: 0;
+  }
+
+  table {
+    width: 100%;
+    border-collapse: collapse;
+  }
+
+  th,
+  td {
+    text-align: left;
+    border-bottom: 1px solid var(--border);
+    padding: 0.65rem 0.4rem;
+    font-size: 0.92rem;
+  }
+
+  @media (max-width: 900px) {
+    .layout {
+      grid-template-columns: 1fr;
+    }
+
+    .cards-3 {
+      grid-template-columns: 1fr;
+    }
+  }
+</style>
+{% endblock %}
+
+{% block content %}
+<div class="layout">
+  <aside class="sidebar">
+    <p class="brand">Ethio-gebeya</p>
+    <nav class="menu">
+      <a href="{% url 'buyer_dashboard' %}" class="{% if active_tab == 'buyer' %}active{% endif %}">Buyer Dashboard</a>
+      <a href="{% url 'seller_dashboard' %}" class="{% if active_tab == 'seller' %}active{% endif %}">Seller Dashboard</a>
+      <a href="{% url 'home' %}">Home</a>
+    </nav>
+  </aside>
+  <main class="content-wrap">
+    <header class="topbar">
+      <h1>{{ dashboard_title }}</h1>
+      <a class="logout" href="{% url 'logout' %}">Sign Out</a>
+    </header>
+    {% block dashboard_content %}{% endblock %}
+  </main>
+</div>
+{% endblock %}

core/templates/core/index.html

@@ -1,145 +1,34 @@
 {% extends "base.html" %}
 
-{% block title %}{{ project_name }}{% endblock %}
+{% block title %}Ethio-gebeya | Marketplace{% endblock %}
-
-{% block head %}
-<link rel="preconnect" href="https://fonts.googleapis.com">
-<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
-<link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;700&display=swap" rel="stylesheet">
-<style>
-  :root {
-    --bg-color-start: #6a11cb;
-    --bg-color-end: #2575fc;
-    --text-color: #ffffff;
-    --card-bg-color: rgba(255, 255, 255, 0.01);
-    --card-border-color: rgba(255, 255, 255, 0.1);
-  }
-
-  * {
-    box-sizing: border-box;
-  }
-
-  body {
-    margin: 0;
-    font-family: 'Inter', sans-serif;
-    background: linear-gradient(45deg, var(--bg-color-start), var(--bg-color-end));
-    color: var(--text-color);
-    display: flex;
-    justify-content: center;
-    align-items: center;
-    min-height: 100vh;
-    text-align: center;
-    overflow: hidden;
-    position: relative;
-  }
-
-  body::before {
-    content: '';
-    position: absolute;
-    inset: 0;
-    background-image: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' width='100' height='100' viewBox='0 0 100 100'><path d='M-10 10L110 10M10 -10L10 110' stroke-width='1' stroke='rgba(255,255,255,0.05)'/></svg>");
-    animation: bg-pan 20s linear infinite;
-    z-index: -1;
-  }
-
-  @keyframes bg-pan {
-    0% {
-      background-position: 0% 0%;
-    }
-
-    100% {
-      background-position: 100% 100%;
-    }
-  }
-
-  main {
-    padding: 2rem;
-  }
-
-  .card {
-    background: var(--card-bg-color);
-    border: 1px solid var(--card-border-color);
-    border-radius: 16px;
-    padding: 2.5rem 2rem;
-    backdrop-filter: blur(20px);
-    -webkit-backdrop-filter: blur(20px);
-    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.25);
-  }
-
-  h1 {
-    font-size: clamp(2.2rem, 3vw + 1.2rem, 3.2rem);
-    font-weight: 700;
-    margin: 0 0 1.2rem;
-    letter-spacing: -0.02em;
-  }
-
-  p {
-    margin: 0.5rem 0;
-    font-size: 1.1rem;
-    opacity: 0.92;
-  }
-
-  .loader {
-    margin: 1.5rem auto;
-    width: 56px;
-    height: 56px;
-    border: 4px solid rgba(255, 255, 255, 0.25);
-    border-top-color: #fff;
-    border-radius: 50%;
-    animation: spin 1s linear infinite;
-  }
-
-  @keyframes spin {
-    to {
-      transform: rotate(360deg);
-    }
-  }
-
-  .runtime code {
-    background: rgba(0, 0, 0, 0.25);
-    padding: 0.15rem 0.45rem;
-    border-radius: 4px;
-    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
-  }
-
-  .sr-only {
-    position: absolute;
-    width: 1px;
-    height: 1px;
-    padding: 0;
-    margin: -1px;
-    overflow: hidden;
-    clip: rect(0, 0, 0, 0);
-    border: 0;
-  }
-
-  footer {
-    position: absolute;
-    bottom: 1rem;
-    width: 100%;
-    text-align: center;
-    font-size: 0.85rem;
-    opacity: 0.75;
-  }
-</style>
-{% endblock %}
 
 {% block content %}
-<main>
+<main class="container py-4">
-  <div class="card">
+    <h1 class="mb-4">Welcome to Ethio-gebeya</h1>
-    <h1>Analyzing your requirements and generating your app…</h1>
+    
-    <div class="loader" role="status" aria-live="polite" aria-label="Applying initial changes">
+    <div class="row">
-      <span class="sr-only">Loading…</span>
+        {% for product in products %}
+        <div class="col-md-4 mb-4">
+            <div class="card h-100">
+                <div class="card-body">
+                    <h5 class="card-title">{{ product.name }}</h5>
+                    <p class="card-text text-muted">{{ product.description|truncatewords:20 }}</p>
+                    <p class="card-text fw-bold">Price: {{ product.price }} ETB</p>
+                    <a href="{% url 'product_detail' product.pk %}" class="btn btn-primary">View Details</a>
+                    <a href="{% url 'add_to_cart' product.pk %}" class="btn btn-success">Add to Cart</a>
                 </div>
-    <p class="hint">AppWizzy AI is collecting your requirements and applying the first changes.</p>
+            </div>
-    <p class="hint">This page will refresh automatically as the plan is implemented.</p>
+        </div>
-    <p class="runtime">
+        {% endfor %}
-      Runtime: Django <code>{{ django_version }}</code> · Python <code>{{ python_version }}</code>
+    </div>
-      — UTC <code>{{ current_time|date:"Y-m-d H:i:s" }}</code>
+
-    </p>
+    <div class="mt-4">
+        {% if user.is_authenticated %}
+        <a class="btn btn-secondary" href="{% url 'dashboard' %}">Open Dashboard</a>
+        {% else %}
+        <a class="btn btn-primary" href="{% url 'login' %}">Sign In</a>
+        {% endif %}
+        <a class="btn btn-info" href="{% url 'cart_view' %}">View Cart</a>
     </div>
 </main>
-<footer>
-  Page updated: {{ current_time|date:"Y-m-d H:i:s" }} (UTC)
-</footer>
 {% endblock %}

core/templates/core/login.html

@@ -0,0 +1,67 @@
+{% extends "base.html" %}
+
+{% block title %}Sign In | Ethio-gebeya{% endblock %}
+
+{% block head %}
+<style>
+  body {
+    margin: 0;
+    font-family: Inter, "Segoe UI", sans-serif;
+    background: #f8fafc;
+  }
+
+  main {
+    min-height: 100vh;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    padding: 1rem;
+  }
+
+  .card {
+    width: 100%;
+    max-width: 430px;
+    background: #fff;
+    border: 1px solid #e2e8f0;
+    border-radius: 16px;
+    padding: 1.4rem;
+  }
+
+  input {
+    width: 100%;
+    border: 1px solid #cbd5e1;
+    border-radius: 10px;
+    padding: 0.6rem 0.7rem;
+    margin-bottom: 0.9rem;
+  }
+
+  button {
+    width: 100%;
+    border: 0;
+    border-radius: 10px;
+    padding: 0.7rem;
+    background: #ea580c;
+    color: #fff;
+    font-weight: 700;
+    cursor: pointer;
+  }
+
+  .errorlist {
+    color: #b91c1c;
+    margin: 0 0 0.5rem;
+  }
+</style>
+{% endblock %}
+
+{% block content %}
+<main>
+  <section class="card">
+    <h1 style="margin-top: 0;">Sign in</h1>
+    <form method="post">
+      {% csrf_token %}
+      {{ form.as_p }}
+      <button type="submit">Continue</button>
+    </form>
+  </section>
+</main>
+{% endblock %}

core/templates/core/product_detail.html

@@ -0,0 +1,21 @@
+{% extends "base.html" %}
+
+{% block title %}{{ product.name }} | Ethio-gebeya{% endblock %}
+
+{% block content %}
+<main class="container py-4">
+    <div class="row">
+        <div class="col-lg-8">
+            <h1 class="mb-3">{{ product.name }}</h1>
+            <p class="text-muted">{{ product.description }}</p>
+            <p class="h4 text-primary">Price: {{ product.price }} ETB</p>
+            <p>Stock: {{ product.stock }}</p>
+            
+            <a href="{% url 'add_to_cart' product.pk %}" class="btn btn-primary btn-lg">Add to Cart</a>
+            
+            <a href="{% url 'home' %}" class="btn btn-link mt-3">Back to catalog</a>
+            <a href="{% url 'cart_view' %}" class="btn btn-info mt-3">View Cart</a>
+        </div>
+    </div>
+</main>
+{% endblock %}

core/templates/core/seller_dashboard.html

@@ -0,0 +1,48 @@
+{% extends "core/dashboard_base.html" %}
+
+{% block title %}Seller Dashboard | Ethio-gebeya{% endblock %}
+
+{% block dashboard_content %}
+<section class="grid cards-3">
+  <article class="card">
+    <p class="label">Products</p>
+    <p class="value">{{ product_count }}</p>
+  </article>
+  <article class="card">
+    <p class="label">Orders</p>
+    <p class="value">{{ total_orders }}</p>
+  </article>
+  <article class="card">
+    <p class="label">Revenue</p>
+    <p class="value">${{ total_revenue }}</p>
+  </article>
+</section>
+
+<section class="card" style="margin-top: 1rem;">
+  <h2 style="margin: 0 0 0.75rem;">Recent Sales</h2>
+  {% if recent_sales %}
+  <table>
+    <thead>
+      <tr>
+        <th>Buyer</th>
+        <th>Product</th>
+        <th>Qty</th>
+        <th>Total</th>
+      </tr>
+    </thead>
+    <tbody>
+      {% for sale in recent_sales %}
+      <tr>
+        <td>{{ sale.order.buyer.username }}</td>
+        <td>{{ sale.product.name }}</td>
+        <td>{{ sale.quantity }}</td>
+        <td>${{ sale.price }}</td>
+      </tr>
+      {% endfor %}
+    </tbody>
+  </table>
+  {% else %}
+  <p>No sales yet.</p>
+  {% endif %}
+</section>
+{% endblock %}

core/urls.py

@@ -1,7 +1,28 @@
 from django.urls import path
+from django.contrib.auth.views import LoginView, LogoutView
 
-from .views import home
+from .views import (
+    add_to_cart,
+    buyer_dashboard,
+    cart_view,
+    checkout,
+    dashboard_redirect,
+    home,
+    product_detail,
+    remove_from_cart,
+    seller_dashboard,
+)
 
 urlpatterns = [
     path("", home, name="home"),
+    path("product/<int:pk>/", product_detail, name="product_detail"),
+    path("login/", LoginView.as_view(template_name="core/login.html"), name="login"),
+    path("logout/", LogoutView.as_view(next_page="home"), name="logout"),
+    path("dashboard/", dashboard_redirect, name="dashboard"),
+    path("dashboard/buyer/", buyer_dashboard, name="buyer_dashboard"),
+    path("dashboard/seller/", seller_dashboard, name="seller_dashboard"),
+    path("cart/", cart_view, name="cart_view"),
+    path("cart/add/<int:pk>/", add_to_cart, name="add_to_cart"),
+    path("cart/remove/<int:pk>/", remove_from_cart, name="remove_from_cart"),
+    path("checkout/", checkout, name="checkout"),
 ]

core/views.py

@@ -2,24 +2,145 @@ import os
 import platform
 
 from django import get_version as django_version
-from django.shortcuts import render
+from django.contrib.auth.decorators import login_required
+from django.db import transaction
+from django.db.models import Count, DecimalField, ExpressionWrapper, F, Sum
+from django.shortcuts import get_object_or_404, redirect, render
 from django.utils import timezone
 
+from .models import Order, OrderItem, Product
+
 
 def home(request):
-    """Render the landing screen with loader and environment details."""
+    """Render the product catalog landing page."""
-    host_name = request.get_host().lower()
+    products = Product.objects.all().order_by('-created_at')
-    agent_brand = "AppWizzy" if host_name == "appwizzy.com" else "Flatlogic"
-    now = timezone.now()
     
     context = {
-        "project_name": "New Style",
+        "products": products,
-        "agent_brand": agent_brand,
         "django_version": django_version(),
-        "python_version": platform.python_version(),
-        "current_time": now,
-        "host_name": host_name,
-        "project_description": os.getenv("PROJECT_DESCRIPTION", ""),
-        "project_image_url": os.getenv("PROJECT_IMAGE_URL", ""),
     }
     return render(request, "core/index.html", context)
+
+
+def product_detail(request, pk):
+    product = get_object_or_404(Product, pk=pk)
+    return render(request, "core/product_detail.html", {"product": product})
+
+
+def _is_seller(user):
+    return hasattr(user, "userprofile") and user.userprofile.is_seller
+
+
+@login_required
+def dashboard_redirect(request):
+    if _is_seller(request.user):
+        return redirect("seller_dashboard")
+    return redirect("buyer_dashboard")
+
+
+@login_required
+def buyer_dashboard(request):
+    if _is_seller(request.user):
+        return redirect("seller_dashboard")
+
+    recent_orders = (
+        Order.objects.filter(buyer=request.user)
+        .prefetch_related("items__product")
+        .order_by("-created_at")[:5]
+    )
+    total_orders = Order.objects.filter(buyer=request.user).count()
+
+    context = {
+        "dashboard_title": "Buyer Dashboard",
+        "active_tab": "buyer",
+        "recent_orders": recent_orders,
+        "total_orders": total_orders,
+    }
+    return render(request, "core/buyer_dashboard.html", context)
+
+
+@login_required
+def seller_dashboard(request):
+    if not _is_seller(request.user):
+        return redirect("buyer_dashboard")
+
+    seller_products = Product.objects.filter(seller=request.user)
+    sales_expression = ExpressionWrapper(
+        F("quantity") * F("price"), output_field=DecimalField(max_digits=12, decimal_places=2)
+    )
+    sales_summary = OrderItem.objects.filter(product__seller=request.user).aggregate(
+        total_items=Sum("quantity"),
+        total_revenue=Sum(sales_expression),
+        total_orders=Count("order", distinct=True),
+    )
+    recent_sales = (
+        OrderItem.objects.filter(product__seller=request.user)
+        .select_related("product", "order__buyer")
+        .order_by("-order__created_at")[:8]
+    )
+
+    context = {
+        "dashboard_title": "Seller Dashboard",
+        "active_tab": "seller",
+        "product_count": seller_products.count(),
+        "total_orders": sales_summary["total_orders"] or 0,
+        "total_items": sales_summary["total_items"] or 0,
+        "total_revenue": sales_summary["total_revenue"] or 0,
+        "recent_sales": recent_sales,
+    }
+    return render(request, "core/seller_dashboard.html", context)
+
+
+def add_to_cart(request, pk):
+    product = get_object_or_404(Product, pk=pk)
+    cart = request.session.get("cart", {})
+    product_id = str(pk)
+    cart[product_id] = cart.get(product_id, 0) + 1
+    request.session["cart"] = cart
+    return redirect("home")
+
+
+def remove_from_cart(request, pk):
+    cart = request.session.get("cart", {})
+    product_id = str(pk)
+    if product_id in cart:
+        del cart[product_id]
+        request.session["cart"] = cart
+    return redirect("cart_view")
+
+
+def cart_view(request):
+    cart = request.session.get("cart", {})
+    items = []
+    total_price = 0
+    for product_id, quantity in cart.items():
+        try:
+            product = Product.objects.get(pk=product_id)
+            items.append({"product": product, "quantity": quantity, "subtotal": product.price * quantity})
+            total_price += product.price * quantity
+        except Product.DoesNotExist:
+            continue
+    context = {"items": items, "total_price": total_price}
+    return render(request, "core/cart.html", context)
+
+
+@login_required
+@transaction.atomic
+def checkout(request):
+    cart = request.session.get("cart", {})
+    if not cart:
+        return redirect("cart_view")
+
+    order = Order.objects.create(buyer=request.user)
+    
+    for product_id, quantity in cart.items():
+        product = get_object_or_404(Product, pk=product_id)
+        OrderItem.objects.create(
+            order=order,
+            product=product,
+            quantity=quantity,
+            price=product.price
+        )
+        
+    request.session["cart"] = {}
+    return redirect("buyer_dashboard")