# Slice 1: Multi-Tenant Foundation
## Admin Creates Vendor → Vendor Owner Logs In

**Status**: 🔄 IN PROGRESS  
**Timeline**: Week 1 (5 days)  
**Current Progress**: Backend ~90%, Frontend ~60%

## 🎯 Slice Objectives

Establish the multi-tenant foundation with complete vendor isolation and admin capabilities.

### User Stories
- ✅ As a Super Admin, I can create vendors through the admin interface
- ✅ As a Super Admin, I can manage vendor accounts (verify, activate, deactivate)
- ⏳ As a Vendor Owner, I can log into my vendor-specific admin interface
- ✅ The system correctly isolates vendor contexts (subdomain + path-based)

### Success Criteria
- [ ] Admin can log into admin interface
- [ ] Admin can create new vendors with auto-generated owner accounts
- [ ] System generates secure temporary passwords
- [ ] Vendor owner can log into vendor-specific interface
- [ ] Vendor context detection works in dev (path) and prod (subdomain) modes
- [ ] Database properly isolates vendor data
- [ ] All API endpoints protected with JWT authentication
- [ ] Frontend integrates seamlessly with backend

## 📋 Backend Implementation

### Database Models (✅ Complete)

#### User Model (`models/database/user.py`)
```python
class User(Base, TimestampMixin):
    __tablename__ = "users"
    
    id = Column(Integer, primary_key=True, index=True)
    email = Column(String, unique=True, nullable=False, index=True)
    username = Column(String, unique=True, nullable=False, index=True)
    hashed_password = Column(String, nullable=False)
    role = Column(String, nullable=False)  # 'admin' or 'user'
    is_active = Column(Boolean, default=True)
    
    # Relationships
    owned_vendors = relationship("Vendor", back_populates="owner")
    vendor_memberships = relationship("VendorUser", back_populates="user")
```

#### Vendor Model (`models/database/vendor.py`)
```python
class Vendor(Base, TimestampMixin):
    __tablename__ = "vendors"
    
    id = Column(Integer, primary_key=True, index=True)
    vendor_code = Column(String, unique=True, nullable=False, index=True)
    subdomain = Column(String(100), unique=True, nullable=False, index=True)
    name = Column(String, nullable=False)
    description = Column(Text)
    owner_user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
    
    # Business info
    business_email = Column(String)
    business_phone = Column(String)
    website = Column(String)
    business_address = Column(Text)
    tax_number = Column(String)
    
    # Status
    is_active = Column(Boolean, default=True)
    is_verified = Column(Boolean, default=False)
    verified_at = Column(DateTime, nullable=True)
    
    # Configuration
    theme_config = Column(JSON, default=dict)
    letzshop_csv_url_fr = Column(String)
    letzshop_csv_url_en = Column(String)
    letzshop_csv_url_de = Column(String)
    
    # Relationships
    owner = relationship("User", back_populates="owned_vendors")
    roles = relationship("Role", back_populates="vendor", cascade="all, delete-orphan")
    team_members = relationship("VendorUser", back_populates="vendor")
```

#### Role Model (`models/database/vendor.py`)
```python
class Role(Base, TimestampMixin):
    __tablename__ = "roles"
    
    id = Column(Integer, primary_key=True, index=True)
    vendor_id = Column(Integer, ForeignKey("vendors.id"), nullable=False)
    name = Column(String, nullable=False)  # Owner, Manager, Editor, Viewer
    permissions = Column(JSON, default=list)
    
    vendor = relationship("Vendor", back_populates="roles")
    vendor_users = relationship("VendorUser", back_populates="role")
```

### Pydantic Schemas (✅ Complete)

#### Vendor Schemas (`models/schema/vendor.py`)
```python
class VendorCreate(BaseModel):
    vendor_code: str = Field(..., min_length=2, max_length=50)
    name: str = Field(..., min_length=2, max_length=200)
    subdomain: str = Field(..., min_length=2, max_length=100)
    owner_email: EmailStr  # NEW for Slice 1
    description: Optional[str] = None
    business_email: Optional[EmailStr] = None
    business_phone: Optional[str] = None
    website: Optional[str] = None
    
    @validator('vendor_code')
    def vendor_code_uppercase(cls, v):
        return v.upper()
    
    @validator('subdomain')
    def subdomain_lowercase(cls, v):
        return v.lower().strip()

class VendorCreateResponse(BaseModel):
    """Response after creating vendor - includes generated credentials"""
    id: int
    vendor_code: str
    subdomain: str
    name: str
    owner_user_id: int
    owner_email: str
    owner_username: str
    temporary_password: str  # Shown only once!
    is_active: bool
    is_verified: bool
    created_at: datetime
```

### Service Layer (✅ Complete)

#### Admin Service (`app/services/admin_service.py`)

**Key Method**: `create_vendor_with_owner()`
```python
async def create_vendor_with_owner(
    self, 
    vendor_data: VendorCreate, 
    db: Session
) -> Dict[str, Any]:
    """
    Creates vendor + owner user + default roles
    Returns vendor details with temporary password
    """
    # 1. Generate owner username
    owner_username = f"{vendor_data.subdomain}_owner"
    
    # 2. Generate secure temporary password
    temp_password = self._generate_temp_password()
    
    # 3. Create owner user
    owner_user = User(
        email=vendor_data.owner_email,
        username=owner_username,
        hashed_password=self.auth_manager.hash_password(temp_password),
        role="user",
        is_active=True
    )
    db.add(owner_user)
    db.flush()  # Get owner_user.id
    
    # 4. Create vendor
    vendor = Vendor(
        vendor_code=vendor_data.vendor_code,
        name=vendor_data.name,
        subdomain=vendor_data.subdomain,
        owner_user_id=owner_user.id,
        is_verified=True,  # Auto-verify admin-created vendors
        verified_at=datetime.utcnow(),
        # ... other fields
    )
    db.add(vendor)
    db.flush()  # Get vendor.id
    
    # 5. Create default roles
    default_roles = ["Owner", "Manager", "Editor", "Viewer"]
    for role_name in default_roles:
        role = Role(
            vendor_id=vendor.id,
            name=role_name,
            permissions=self._get_default_permissions(role_name)
        )
        db.add(role)
    
    # 6. Link owner to Owner role
    owner_role = db.query(Role).filter(
        Role.vendor_id == vendor.id,
        Role.name == "Owner"
    ).first()
    
    vendor_user = VendorUser(
        vendor_id=vendor.id,
        user_id=owner_user.id,
        role_id=owner_role.id,
        is_active=True
    )
    db.add(vendor_user)
    
    db.commit()
    
    return {
        "vendor": vendor,
        "owner_username": owner_username,
        "temporary_password": temp_password
    }
```

### API Endpoints (✅ Complete)

#### Admin Endpoints (`app/api/v1/admin.py`)

```python
@router.post("/vendors", response_model=VendorCreateResponse)
async def create_vendor(
    vendor_data: VendorCreate,
    current_user: User = Depends(get_current_admin_user),
    db: Session = Depends(get_db)
):
    """Create new vendor with owner account"""
    result = await admin_service.create_vendor_with_owner(vendor_data, db)
    
    return VendorCreateResponse(
        id=result["vendor"].id,
        vendor_code=result["vendor"].vendor_code,
        subdomain=result["vendor"].subdomain,
        name=result["vendor"].name,
        owner_user_id=result["vendor"].owner_user_id,
        owner_email=vendor_data.owner_email,
        owner_username=result["owner_username"],
        temporary_password=result["temporary_password"],
        is_active=result["vendor"].is_active,
        is_verified=result["vendor"].is_verified,
        created_at=result["vendor"].created_at
    )

@router.get("/vendors", response_model=VendorListResponse)
async def list_vendors(
    skip: int = 0,
    limit: int = 100,
    is_active: Optional[bool] = None,
    is_verified: Optional[bool] = None,
    current_user: User = Depends(get_current_admin_user),
    db: Session = Depends(get_db)
):
    """List all vendors with filtering"""
    return await admin_service.get_vendors(db, skip, limit, is_active, is_verified)

@router.get("/dashboard", response_model=AdminDashboardResponse)
async def get_admin_dashboard(
    current_user: User = Depends(get_current_admin_user),
    db: Session = Depends(get_db)
):
    """Get admin dashboard statistics"""
    return await admin_service.get_dashboard_stats(db)

@router.put("/vendors/{vendor_id}/verify")
async def verify_vendor(
    vendor_id: int,
    current_user: User = Depends(get_current_admin_user),
    db: Session = Depends(get_db)
):
    """Verify/unverify vendor"""
    return await admin_service.toggle_vendor_verification(vendor_id, db)

@router.put("/vendors/{vendor_id}/status")
async def toggle_vendor_status(
    vendor_id: int,
    current_user: User = Depends(get_current_admin_user),
    db: Session = Depends(get_db)
):
    """Activate/deactivate vendor"""
    return await admin_service.toggle_vendor_status(vendor_id, db)
```

### Middleware (✅ Complete)

#### Vendor Context Detection (`middleware/vendor_context.py`)

```python
async def vendor_context_middleware(request: Request, call_next):
    """
    Detects vendor context from:
    1. Subdomain: vendor.platform.com (production)
    2. Path: /vendor/VENDOR_CODE/ (development)
    """
    vendor_context = None
    
    # Skip for admin/API routes
    if request.url.path.startswith(("/api/", "/admin/", "/static/")):
        response = await call_next(request)
        return response
    
    # 1. Try subdomain detection (production)
    host = request.headers.get("host", "").split(":")[0]
    parts = host.split(".")
    if len(parts) > 2:
        subdomain = parts[0]
        vendor = get_vendor_by_subdomain(subdomain)
        if vendor:
            vendor_context = vendor
    
    # 2. Try path detection (development)
    if not vendor_context:
        path_parts = request.url.path.split("/")
        if len(path_parts) > 2 and path_parts[1] == "vendor":
            vendor_code = path_parts[2].upper()
            vendor = get_vendor_by_code(vendor_code)
            if vendor:
                vendor_context = vendor
    
    request.state.vendor = vendor_context
    response = await call_next(request)
    return response
```

## 🎨 Frontend Implementation

### Template Structure (Jinja2)

#### Base Template (`templates/base.html`)
```html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>{% block title %}Multi-Tenant Platform{% endblock %}</title>
    
    <!-- CSS -->
    <link rel="stylesheet" href="/static/css/shared/base.css">
    {% block extra_css %}{% endblock %}
    
    <!-- Alpine.js from CDN -->
    <script defer src="https://cdn.jsdelivr.net/npm/alpinejs@3.x.x/dist/cdn.min.js"></script>
</head>
<body>
    {% block content %}{% endblock %}
    
    <!-- Shared JavaScript -->
    <script src="/static/js/shared/api-client.js"></script>
    {% block extra_scripts %}{% endblock %}
</body>
</html>
```

### Admin Pages (🔄 In Progress)

#### 1. Admin Login (`templates/admin/login.html`)

**Status**: ✅ Complete

```html
{% extends "base.html" %}

{% block title %}Admin Login{% endblock %}

{% block extra_css %}
<link rel="stylesheet" href="/static/css/shared/auth.css">
{% endblock %}

{% block content %}
<div class="auth-page" x-data="adminLogin()">
    <div class="login-container">
        <div class="login-header">
            <div class="auth-logo">🔐</div>
            <h1>Admin Portal</h1>
            <p>Sign in to continue</p>
        </div>
        
        <form @submit.prevent="handleLogin">
            <!-- Alert -->
            <div x-show="error" x-text="error" class="alert alert-error"></div>
            
            <!-- Username -->
            <div class="form-group">
                <label>Username</label>
                <input 
                    type="text" 
                    x-model="username"
                    class="form-control"
                    required
                    :disabled="loading"
                >
            </div>
            
            <!-- Password -->
            <div class="form-group">
                <label>Password</label>
                <input 
                    type="password" 
                    x-model="password"
                    class="form-control"
                    required
                    :disabled="loading"
                >
            </div>
            
            <!-- Submit -->
            <button 
                type="submit" 
                class="btn-login"
                :disabled="loading"
            >
                <span x-show="!loading">Sign In</span>
                <span x-show="loading" class="loading-spinner"></span>
            </button>
        </form>
    </div>
</div>
{% endblock %}

{% block extra_scripts %}
<script>
function adminLogin() {
    return {
        username: '',
        password: '',
        loading: false,
        error: null,
        
        async handleLogin() {
            this.loading = true;
            this.error = null;
            
            try {
                const response = await apiClient.post('/api/v1/auth/login', {
                    username: this.username,
                    password: this.password
                });
                
                if (response.user.role !== 'admin') {
                    this.error = 'Admin access required';
                    return;
                }
                
                localStorage.setItem('admin_token', response.access_token);
                window.location.href = '/admin/dashboard';
            } catch (error) {
                this.error = error.message || 'Login failed';
            } finally {
                this.loading = false;
            }
        }
    }
}
</script>
{% endblock %}
```

#### 2. Admin Dashboard (`templates/admin/dashboard.html`)

**Status**: ⏳ In Progress

```html
{% extends "admin/base_admin.html" %}

{% block title %}Admin Dashboard{% endblock %}

{% block content %}
<div x-data="adminDashboard()" x-init="loadStats()">
    <!-- Header -->
    <div class="page-header">
        <h1>Dashboard</h1>
        <div class="header-actions">
            <button @click="refreshStats()" class="btn btn-secondary">
                <span x-show="!loading">Refresh</span>
                <span x-show="loading" class="loading-spinner"></span>
            </button>
        </div>
    </div>
    
    <!-- Stats Grid -->
    <div class="stats-grid">
        <!-- Total Vendors -->
        <div class="stat-card">
            <div class="stat-header">
                <div class="stat-title">Total Vendors</div>
                <div class="stat-icon">🏪</div>
            </div>
            <div class="stat-value" x-text="stats.vendors.total_vendors || '-'"></div>
            <div class="stat-subtitle">
                <span x-text="stats.vendors.active_vendors || 0"></span> active
            </div>
        </div>
        
        <!-- Total Users -->
        <div class="stat-card">
            <div class="stat-header">
                <div class="stat-title">Total Users</div>
                <div class="stat-icon">👥</div>
            </div>
            <div class="stat-value" x-text="stats.users.total_users || '-'"></div>
            <div class="stat-subtitle">
                <span x-text="stats.users.active_users || 0"></span> active
            </div>
        </div>
        
        <!-- Verified Vendors -->
        <div class="stat-card">
            <div class="stat-header">
                <div class="stat-title">Verified</div>
                <div class="stat-icon">✓</div>
            </div>
            <div class="stat-value" x-text="stats.vendors.verified_vendors || '-'"></div>
            <div class="stat-subtitle">vendors verified</div>
        </div>
    </div>
    
    <!-- Recent Vendors -->
    <div class="content-section">
        <div class="section-header">
            <h2>Recent Vendors</h2>
            <a href="/admin/vendors" class="btn btn-sm">View All</a>
        </div>
        
        <template x-if="stats.recent_vendors && stats.recent_vendors.length > 0">
            <table class="data-table">
                <thead>
                    <tr>
                        <th>Vendor Code</th>
                        <th>Name</th>
                        <th>Subdomain</th>
                        <th>Status</th>
                        <th>Created</th>
                    </tr>
                </thead>
                <tbody>
                    <template x-for="vendor in stats.recent_vendors" :key="vendor.id">
                        <tr>
                            <td><strong x-text="vendor.vendor_code"></strong></td>
                            <td x-text="vendor.name"></td>
                            <td x-text="vendor.subdomain"></td>
                            <td>
                                <span 
                                    class="badge"
                                    :class="vendor.is_active ? 'badge-success' : 'badge-danger'"
                                    x-text="vendor.is_active ? 'Active' : 'Inactive'"
                                ></span>
                            </td>
                            <td x-text="formatDate(vendor.created_at)"></td>
                        </tr>
                    </template>
                </tbody>
            </table>
        </template>
        
        <template x-if="!stats.recent_vendors || stats.recent_vendors.length === 0">
            <p class="text-muted">No vendors yet. Create your first vendor!</p>
        </template>
    </div>
</div>
{% endblock %}

{% block extra_scripts %}
<script>
function adminDashboard() {
    return {
        stats: {},
        loading: false,
        error: null,
        
        async loadStats() {
            this.loading = true;
            try {
                this.stats = await apiClient.get('/api/v1/admin/dashboard');
            } catch (error) {
                this.error = error.message;
                showNotification('Failed to load dashboard', 'error');
            } finally {
                this.loading = false;
            }
        },
        
        async refreshStats() {
            await this.loadStats();
            showNotification('Dashboard refreshed', 'success');
        },
        
        formatDate(dateString) {
            return new Date(dateString).toLocaleDateString();
        }
    }
}
</script>
{% endblock %}
```

#### 3. Vendor Creation (`templates/admin/vendors.html`)

**Status**: ⏳ In Progress

Alpine.js component for creating vendors with real-time validation and credential display.

### Vendor Pages (📋 To Do)

#### 1. Vendor Login (`templates/vendor/login.html`)

**Status**: 📋 To Do

```html
{% extends "base.html" %}

{% block title %}Vendor Login{% endblock %}

{% block extra_css %}
<link rel="stylesheet" href="/static/css/shared/auth.css">
{% endblock %}

{% block content %}
<div class="auth-page" x-data="vendorLogin()">
    <div class="login-container">
        <!-- Vendor Info -->
        <template x-if="vendor">
            <div class="vendor-info">
                <h2 x-text="vendor.name"></h2>
                <p class="text-muted" x-text="vendor.vendor_code"></p>
            </div>
        </template>
        
        <!-- Login Form -->
        <template x-if="vendor">
            <form @submit.prevent="handleLogin">
                <div x-show="error" x-text="error" class="alert alert-error"></div>
                
                <div class="form-group">
                    <label>Username</label>
                    <input 
                        type="text" 
                        x-model="username"
                        class="form-control"
                        required
                    >
                </div>
                
                <div class="form-group">
                    <label>Password</label>
                    <input 
                        type="password" 
                        x-model="password"
                        class="form-control"
                        required
                    >
                </div>
                
                <button type="submit" class="btn-login" :disabled="loading">
                    <span x-show="!loading">Sign In</span>
                    <span x-show="loading" class="loading-spinner"></span>
                </button>
            </form>
        </template>
        
        <!-- Vendor Not Found -->
        <template x-if="!vendor && !loading">
            <div class="error-state">
                <h2>Vendor Not Found</h2>
                <p>The vendor you're trying to access doesn't exist.</p>
            </div>
        </template>
    </div>
</div>

<script>
    // Pass vendor data from backend
    window.vendorData = {{ vendor|tojson if vendor else 'null' }};
</script>
{% endblock %}

{% block extra_scripts %}
<script>
function vendorLogin() {
    return {
        vendor: window.vendorData,
        username: '',
        password: '',
        loading: false,
        error: null,
        
        async handleLogin() {
            this.loading = true;
            this.error = null;
            
            try {
                const response = await apiClient.post('/api/v1/auth/login', {
                    username: this.username,
                    password: this.password,
                    vendor_id: this.vendor.id
                });
                
                localStorage.setItem('vendor_token', response.access_token);
                localStorage.setItem('vendor_id', this.vendor.id);
                window.location.href = `/vendor/${this.vendor.subdomain}/dashboard`;
            } catch (error) {
                this.error = error.message || 'Login failed';
            } finally {
                this.loading = false;
            }
        }
    }
}
</script>
{% endblock %}
```

#### 2. Vendor Dashboard (`templates/vendor/dashboard.html`)

**Status**: 📋 To Do

```html
{% extends "vendor/base_vendor.html" %}

{% block title %}{{ vendor.name }} Dashboard{% endblock %}

{% block content %}
<div x-data="vendorDashboard()" x-init="loadDashboard()">
    <!-- Welcome Card -->
    <div class="card welcome-card mb-3">
        <h1>Welcome to {{ vendor.name }}</h1>
        <p class="text-muted">Vendor Code: {{ vendor.vendor_code }}</p>
        <div class="mt-2">
            <span 
                class="badge" 
                :class="vendor.is_verified ? 'badge-success' : 'badge-warning'"
            >
                ${vendor.is_verified ? 'Verified' : 'Pending Verification'}
            </span>
        </div>
    </div>
    
    <!-- Quick Stats -->
    <div class="stats-grid">
        <div class="stat-card">
            <div class="stat-header">
                <div class="stat-title">Products</div>
                <div class="stat-icon">📦</div>
            </div>
            <div class="stat-value" x-text="stats.products_count || '0'"></div>
            <div class="stat-subtitle">in catalog</div>
        </div>
        
        <div class="stat-card">
            <div class="stat-header">
                <div class="stat-title">Orders</div>
                <div class="stat-icon">🛒</div>
            </div>
            <div class="stat-value" x-text="stats.orders_count || '0'"></div>
            <div class="stat-subtitle">total orders</div>
        </div>
        
        <div class="stat-card">
            <div class="stat-header">
                <div class="stat-title">Customers</div>
                <div class="stat-icon">👥</div>
            </div>
            <div class="stat-value" x-text="stats.customers_count || '0'"></div>
            <div class="stat-subtitle">registered</div>
        </div>
    </div>
    
    <!-- Coming Soon Notice -->
    <div class="card mt-3 p-3 text-center">
        <h3>🚀 Coming in Slice 2</h3>
        <p class="text-muted">
            Product import from Letzshop marketplace will be available soon!
        </p>
    </div>
</div>

<script>
    window.vendorData = {{ vendor|tojson }};
</script>
{% endblock %}

{% block extra_scripts %}
<script>
function vendorDashboard() {
    return {
        vendor: window.vendorData,
        stats: {},
        loading: false,
        
        async loadDashboard() {
            this.loading = true;
            try {
                this.stats = await apiClient.get('/api/v1/vendor/dashboard/stats');
            } catch (error) {
                console.error('Failed to load dashboard:', error);
            } finally {
                this.loading = false;
            }
        }
    }
}
</script>
{% endblock %}
```

## ✅ Testing Checklist

### Backend Tests

#### Authentication
- [ ] Admin can login with valid credentials
- [ ] Admin login rejects invalid credentials
- [ ] Non-admin users cannot access admin endpoints
- [ ] JWT tokens expire after configured time
- [ ] Token refresh works correctly

#### Vendor Management
- [ ] Admin can create vendor with all required fields
- [ ] System generates unique vendor code
- [ ] System generates unique subdomain
- [ ] Owner user account is created automatically
- [ ] Temporary password is generated (12+ characters)
- [ ] Default roles are created (Owner, Manager, Editor, Viewer)
- [ ] Owner is linked to Owner role
- [ ] Vendor is auto-verified when created by admin
- [ ] Duplicate vendor code is rejected
- [ ] Duplicate subdomain is rejected
- [ ] Duplicate owner email is rejected

#### Vendor Context Detection
- [ ] Subdomain detection works: `vendor.platform.com`
- [ ] Path detection works: `/vendor/VENDORCODE/`
- [ ] Admin routes bypass vendor context
- [ ] API routes bypass vendor context
- [ ] Static routes bypass vendor context
- [ ] Invalid vendor returns appropriate error

#### API Endpoints
- [ ] `POST /api/v1/admin/vendors` creates vendor
- [ ] `GET /api/v1/admin/vendors` lists vendors with pagination
- [ ] `GET /api/v1/admin/dashboard` returns statistics
- [ ] `PUT /api/v1/admin/vendors/{id}/verify` toggles verification
- [ ] `PUT /api/v1/admin/vendors/{id}/status` toggles active status
- [ ] All endpoints require admin authentication
- [ ] All endpoints return proper error messages

### Frontend Tests

#### Admin Login Page
- [ ] Page loads without errors
- [ ] Form validation works
- [ ] Loading state displays during login
- [ ] Error messages display correctly
- [ ] Successful login redirects to dashboard
- [ ] Token is stored in localStorage
- [ ] Page is responsive on mobile

#### Admin Dashboard
- [ ] Dashboard loads with statistics
- [ ] Vendor count is accurate
- [ ] User count is accurate
- [ ] Recent vendors list displays
- [ ] Navigation works correctly
- [ ] Refresh button updates data
- [ ] Loading states work correctly
- [ ] No console errors

#### Vendor Creation Page
- [ ] Form loads correctly
- [ ] All fields are validated
- [ ] Vendor code auto-uppercases
- [ ] Subdomain auto-lowercases
- [ ] Email validation works
- [ ] Submit creates vendor successfully
- [ ] Credentials are displayed once
- [ ] Can copy credentials
- [ ] Form resets after creation
- [ ] Error messages display correctly

#### Vendor Login Page
- [ ] Page loads with vendor context
- [ ] Vendor name displays correctly
- [ ] Form validation works
- [ ] Login succeeds with correct credentials
- [ ] Login fails with wrong credentials
- [ ] Redirects to vendor dashboard
- [ ] Token stored in localStorage
- [ ] "Vendor Not Found" shows for invalid vendor

#### Vendor Dashboard
- [ ] Dashboard loads successfully
- [ ] Vendor information displays
- [ ] Statistics load correctly
- [ ] Welcome message shows
- [ ] Verification badge shows correct status
- [ ] No console errors

### Database Tests

#### Schema Verification
```sql
-- Check tables exist
SELECT table_name FROM information_schema.tables 
WHERE table_schema = 'public';
-- Expected: users, vendors, roles, vendor_users

-- Check admin user
SELECT * FROM users WHERE role = 'admin';

-- Check vendor creation
SELECT * FROM vendors WHERE vendor_code = 'TESTVENDOR';

-- Check owner user
SELECT * FROM users WHERE email = 'owner@testvendor.com';

-- Check default roles
SELECT * FROM roles WHERE vendor_id = (
    SELECT id FROM vendors WHERE vendor_code = 'TESTVENDOR'
);
-- Expected: 4 roles (Owner, Manager, Editor, Viewer)
```

### Security Tests

- [ ] Passwords are hashed with bcrypt
- [ ] JWT tokens are properly signed
- [ ] Admin endpoints reject non-admin users
- [ ] Vendor endpoints require authentication
- [ ] Cross-vendor access is prevented
- [ ] SQL injection is prevented
- [ ] XSS is prevented in forms
- [ ] CSRF protection is enabled

### Performance Tests

- [ ] Admin login responds < 1 second
- [ ] Dashboard loads < 2 seconds
- [ ] Vendor creation completes < 3 seconds
- [ ] Vendor list loads < 1 second
- [ ] No N+1 query problems

## 📝 Documentation Tasks

- [ ] Update API documentation with new endpoints
- [ ] Document Alpine.js component patterns
- [ ] Document Jinja2 template structure
- [ ] Create deployment guide
- [ ] Update environment variables documentation
- [ ] Document vendor context detection logic

## 🚀 Deployment Checklist

### Environment Setup
- [ ] PostgreSQL database created
- [ ] Environment variables configured
- [ ] Static files directory created
- [ ] Template directory created
- [ ] Database migrations applied

### Configuration
- [ ] `JWT_SECRET_KEY` set to strong random value
- [ ] `DATABASE_URL` configured correctly
- [ ] `DEBUG` set appropriately (False for production)
- [ ] `ALLOWED_HOSTS` configured
- [ ] CORS settings configured

### Security
- [ ] Change default admin password
- [ ] Enable HTTPS in production
- [ ] Configure secure cookie settings
- [ ] Set up rate limiting
- [ ] Enable request logging

### DNS (Production Only)
- [ ] Wildcard subdomain configured: `*.platform.com`
- [ ] Admin subdomain configured: `admin.platform.com`
- [ ] SSL certificates installed

## 🎯 Acceptance Criteria

Slice 1 is complete when:

1. **Admin Workflow Works**
   - [ ] Admin can log in
   - [ ] Admin can view dashboard
   - [ ] Admin can create vendors
   - [ ] Admin can manage vendors

2. **Vendor Workflow Works**
   - [ ] Vendor owner receives credentials
   - [ ] Vendor owner can log in
   - [ ] Vendor dashboard displays correctly
   - [ ] Vendor context is properly isolated

3. **Technical Requirements Met**
   - [ ] All API endpoints implemented
   - [ ] All frontend pages created
   - [ ] Database schema complete
   - [ ] Tests pass
   - [ ] Documentation complete

4. **Quality Standards Met**
   - [ ] Code follows conventions
   - [ ] No security vulnerabilities
   - [ ] Performance acceptable
   - [ ] Mobile responsive
   - [ ] Browser compatible

## 🔄 Known Issues / To Do

### High Priority
- [ ] Complete vendor login page
- [ ] Complete vendor dashboard page
- [ ] Test vendor context detection thoroughly
- [ ] Add password reset functionality

### Medium Priority
- [ ] Add vendor list page for admin
- [ ] Add vendor detail page for admin
- [ ] Improve error messages
- [ ] Add loading skeletons

### Low Priority
- [ ] Add dark mode support
- [ ] Add keyboard shortcuts
- [ ] Add export functionality
- [ ] Add audit logging

## 📚 Related Documentation

- `00_slices_overview.md` - Overview of all slices
- `../quick_start_guide.md` - Quick setup guide
- `../css_structure_guide.txt` - CSS organization
- `../12.project_readme_final.md` - Complete README

## ➡️ Next Steps

After completing Slice 1:

1. **Test Thoroughly**: Run through entire testing checklist
2. **Deploy to Staging**: Test in production-like environment
3. **Demo to Stakeholders**: Show admin → vendor creation flow
4. **Document Learnings**: Update this document with lessons learned
5. **Move to Slice 2**: Begin marketplace import implementation

## 💡 Tips & Best Practices

### Working with Alpine.js
- Keep components focused and small
- Use `x-data` for reactive state
- Use `x-init` for loading data
- Prefer `x-show` over `x-if` for toggles
- Use `@click`, `@submit` for event handling

### Working with Jinja2
- Pass initial data from backend to avoid extra API calls
- Use template inheritance (extends, blocks)
- Keep logic in backend, not templates
- Use filters for formatting

### API Integration
- Always handle loading states
- Always handle errors gracefully
- Use the shared `apiClient` utility
- Store tokens in localStorage
- Clear tokens on logout

---

**Slice 1 Status**: 🔄 In Progress  
**Next Milestone**: Complete vendor login and dashboard pages  
**Estimated Completion**: End of Week 1