# Changelog - November 23, 2025

## Summary

Major improvements to shop frontend functionality, landing pages, and cart system. Fixed critical issues preventing products from being added to cart, refactored templates for proper styling, and established comprehensive navigation architecture.

## Landing Page System

### Features Added
- ✅ Vendor landing pages at root URLs (`/`, `/vendors/{code}/`)
- ✅ Four template options: default, minimal, modern, full
- ✅ CMS-powered content management via ContentPage model
- ✅ Auto-redirect to `/shop/` when no landing page exists
- ✅ Two-tier navigation: landing page (/) + shop (/shop/)

### Templates Created
1. `app/templates/vendor/landing-default.html` - Clean professional layout
2. `app/templates/vendor/landing-minimal.html` - Ultra-simple centered design
3. `app/templates/vendor/landing-modern.html` - Full-screen with animations
4. `app/templates/vendor/landing-full.html` - Split-screen with maximum features

### Supporting Files
- `scripts/create_landing_page.py` - Interactive landing page creator
- `docs/features/vendor-landing-pages.md` - Complete usage guide
- `docs/frontend/shop/navigation-flow.md` - Navigation architecture
- `TEST_LANDING_PAGES.md` - Testing guide

### Database Changes
- Migration `f68d8da5315a`: Added `template` field to `content_pages` table
- Supports values: default, minimal, modern, full

## Shop Template Refactoring

### Problem Fixed
Pages displayed without styling due to:
- Standalone HTML structure (not extending base template)
- Hardcoded CSS references to non-existent files
- Missing header, footer, and navigation

### Templates Refactored

#### 1. Product Detail Page (`shop/product.html`)
**Before:** 770 lines of standalone HTML with custom CSS
**After:** 403 lines extending base template

**Changes:**
- Extends `shop/base.html` for consistent styling
- Removed hardcoded CSS files
- Added breadcrumbs with landing page navigation
- Integrated with `shopLayoutData()` for cart functionality
- Uses Tailwind classes + theme CSS variables
- Proper Alpine.js component inheritance

#### 2. Shopping Cart Page (`shop/cart.html`)
**Before:** 489 lines standalone HTML
**After:** 319 lines extending base template

**Changes:**
- Extends `shop/base.html`
- Modern responsive grid layout
- Integrated toast notifications
- Proper session management
- Breadcrumbs and navigation
- Removed 437 lines of redundant custom CSS

### Benefits
- ✅ Consistent styling across all pages
- ✅ Automatic header/footer/navigation
- ✅ Theme variables applied correctly
- ✅ Mobile responsive out of the box
- ✅ Dark mode support
- ✅ Reduced code duplication

## Cart Functionality Fixes

### Critical Issue: Products Can't Be Added to Cart

**Root Cause:**
- Products had `available_inventory: 0`
- `inventory` table was empty
- `available_inventory` is calculated from `inventory_entries`
- `canAddToCart` check failed

**Solution:**
- Created `scripts/create_inventory.py`
- Populates inventory table with 100 units per product
- Now products can be added to cart successfully

### Session Management Issue

**Root Cause:**
- `sessionId` was `undefined` in cart/product components
- Parent `shopLayoutData()` init not being called
- Alpine.js inheritance wasn't working correctly

**Solution:**
- Store reference to `baseData` before spreading
- Explicitly call `baseData.init.call(this)` in child components
- Session ID now properly initialized across all pages

**Code Pattern:**
```javascript
const baseData = shopLayoutData();
return {
    ...baseData,
    async init() {
        if (baseData.init) {
            baseData.init.call(this);  // Initialize session
        }
        await this.loadData();
    }
};
```

## Routing and Navigation Fixes

### Duplicate /shop/ Prefix

**Problem:** Routes like `/vendors/wizamart/shop/shop/products/4`

**Root Cause:**
```python
# Router mounted with prefix
app.include_router(router, prefix="/shop")

# Routes incorrectly repeated prefix
@router.get("/shop/products/{id}")  # ❌ Wrong
```

**Fix:**
```python
@router.get("/products/{id}")  # ✅ Correct
```

All routes in `shop_pages.py` fixed.

### Missing /shop/ in Template Links

**Problem:** Links went to `/vendors/wizamart/products` instead of `/shop/products`

**Fix:** Updated all templates:
- `shop/base.html` - Header, footer, navigation
- `shop/products.html` - Product links
- `shop/product.html` - Breadcrumbs, related products
- `shop/cart.html` - Continue shopping, checkout
- `shop/errors/404.html` - All fallback links
- `shop/account/*.html` - Login, register links

### Navigation Architecture

**Established two-tier system:**
- **Landing Page (/)** - Marketing, branding, vendor story
- **Shop (/shop/)** - E-commerce, products, cart, checkout

**Navigation Pattern:**
- Logo → `/shop/` (stay in shop for convenience)
- Breadcrumb "Home" → `/` (return to landing page)
- Header "Home" → `/` (return to landing page)

## Placeholder Image System

### Problem
- Missing images showed broken icon
- Placeholder was `.jpg` file containing SVG content
- Browsers won't render SVG from non-SVG file

### Solution
- Created proper `/static/shop/img/placeholder.svg`
- Added `@error` handlers to all image tags
- Automatic fallback when images fail to load

```html
<img
    :src="product.image_link || '/static/shop/img/placeholder.svg'"
    @error="$el.src = '/static/shop/img/placeholder.svg'"
    alt="Product"
>
```

**Updated templates:**
- `shop/product.html` - Main image, thumbnails, related products
- `shop/products.html` - Product grid
- `shop/cart.html` - Cart item images

## Documentation Updates

### New Documentation

**1. Shop Frontend Troubleshooting** (`docs/troubleshooting/shop-frontend.md`)
Comprehensive guide covering:
- Cart and product issues (inventory, sessions)
- Styling and layout issues (base template, CSS)
- Navigation and routing issues (URLs, links)
- Landing page issues (404s, redirects)
- Alpine.js issues (component data, initialization)
- Debugging tips and console commands

**2. Navigation Flow Guide** (`docs/frontend/shop/navigation-flow.md`)
- Complete URL hierarchy
- Navigation patterns (with/without landing page)
- Link reference guide
- User journey examples
- Best practices

### Updated Documentation

**Database Setup** (`docs/getting-started/database-setup.md`)
- Added data seeding section
- Documented all three seeding scripts
- Complete setup workflow
- Common issues and solutions
- Database reset instructions

## Scripts Created

### 1. Create Inventory (`scripts/create_inventory.py`)
- Creates inventory entries for products without inventory
- Sets 100 units in "Main Warehouse"
- Can run multiple times (only creates missing entries)
- **Required for cart functionality**

### 2. Create Landing Page (`scripts/create_landing_page.py`)
- Interactive landing page creation
- Template selection (default, minimal, modern, full)
- Updates existing or creates new
- Vendor listing and status

## Commits Summary

1. `b7bf505` - feat: implement vendor landing pages with multi-template support and fix shop routing
2. `1df4f12` - fix: refactor product detail page to extend base template and use correct paths
3. `e94b3f9` - fix: resolve product detail page data access and add placeholder image
4. `6fa9ccb` - fix: use proper SVG placeholder image across all shop templates
5. `8c9190b` - feat: add automatic fallback to placeholder for broken product images
6. `651e58a` - fix: refactor cart page to extend base template and fix styling
7. `84c6c38` - fix: add sessionId to shopLayoutData for cart functionality
8. `4c69a94` - fix: properly call parent init in cart and product components
9. `b4e52f5` - feat: add detailed logging to add to cart functionality for debugging
10. `3d585e5` - feat: add script to create inventory entries for products
11. `f217def` - docs: comprehensive updates for today's shop frontend improvements

## Files Changed

### Modified
- `main.py` - Root handler for landing pages
- `app/routes/shop_pages.py` - Fixed duplicate /shop prefix
- `app/templates/shop/base.html` - Updated header home link
- `app/templates/shop/product.html` - Complete refactor
- `app/templates/shop/cart.html` - Complete refactor
- `app/templates/shop/products.html` - Fixed links and placeholder
- `app/templates/shop/content-page.html` - Fixed breadcrumbs
- `static/shop/js/shop-layout.js` - Added sessionId management
- `models/database/content_page.py` - Added template field

### Created
- `app/templates/vendor/landing-default.html`
- `app/templates/vendor/landing-minimal.html`
- `app/templates/vendor/landing-modern.html`
- `app/templates/vendor/landing-full.html`
- `static/shop/img/placeholder.svg`
- `scripts/create_landing_page.py`
- `scripts/create_inventory.py`
- `docs/features/vendor-landing-pages.md`
- `docs/frontend/shop/navigation-flow.md`
- `docs/troubleshooting/shop-frontend.md`
- `TEST_LANDING_PAGES.md`
- `alembic/versions/f68d8da5315a_add_template_field_to_content_pages_for_.py`

### Deleted
- `app/api/v1/public/__init__.py` - Unused endpoints
- `app/api/v1/public/vendors/__init__.py` - Unused endpoints
- `app/api/v1/public/vendors/vendors.py` - Unused endpoints
- `app/templates/vendor/admin/*.html` - Moved to root vendor/

## Testing

### Verified Functionality
- ✅ Landing pages display correctly (all 4 templates)
- ✅ Auto-redirect when no landing page exists
- ✅ Products can be added to cart
- ✅ Cart displays items correctly
- ✅ Cart count updates in header
- ✅ Session persists across page loads
- ✅ Placeholder images display for broken URLs
- ✅ All navigation links work correctly
- ✅ Breadcrumb navigation to landing page works
- ✅ Dark mode toggle works
- ✅ Mobile responsive design works

### Test URLs
```
Landing Pages:
- http://localhost:8000/vendors/wizamart/
- http://localhost:8000/vendors/fashionhub/
- http://localhost:8000/vendors/bookstore/

Shop Pages:
- http://localhost:8000/vendors/wizamart/shop/
- http://localhost:8000/vendors/wizamart/shop/products
- http://localhost:8000/vendors/wizamart/shop/products/1
- http://localhost:8000/vendors/wizamart/shop/cart
```

## Breaking Changes

None. All changes are backwards compatible.

## Known Issues

None identified.

## Next Steps

Suggested improvements for future work:
1. Checkout page implementation
2. Customer account dashboard
3. Order management system
4. Payment integration
5. Visual landing page builder (Phase 2)
6. Email notifications
7. Product reviews and ratings

## Performance

No significant performance impact. Template consolidation actually improves performance by:
- Reducing duplicate CSS
- Shared base template caching
- Fewer HTTP requests for styles

## Security

No security implications. All changes maintain existing authentication and authorization.
