# Product Page Implementation Plan

## 🎯 What We Have (Current State)

### Backend (API):
✅ Product data with variations
✅ Product attributes
✅ Images array (featured + gallery)
✅ Variation images
✅ Price, stock status, SKU
✅ Description, short description
✅ Categories, tags
✅ Related products

### Frontend (Existing):
✅ Basic product page structure
✅ Image gallery with thumbnails (implemented but needs enhancement)
✅ Add to cart functionality
✅ Cart store (Zustand)
✅ Toast notifications
✅ Responsive layout

### Missing:
❌ Horizontal scrollable thumbnail slider
❌ Variation selector dropdowns
❌ Variation image auto-switching
❌ Reviews section
❌ Specifications table
❌ Shipping/Returns info
❌ Wishlist/Save feature
❌ Related products display
❌ Social proof elements
❌ Trust badges

---

## 📋 Implementation Priority (What Makes Sense Now)

### **Phase 1: Core Product Page (Implement Now)** ⭐

#### 1.1 Image Gallery Enhancement
- ✅ Horizontal scrollable thumbnail slider
- ✅ Arrow navigation for >4 images
- ✅ Active thumbnail highlight
- ✅ Click thumbnail to change main image
- ✅ Responsive (swipeable on mobile)

**Why:** Critical for user experience, especially for products with multiple images

#### 1.2 Variation Selector
- ✅ Dropdown for each attribute
- ✅ Auto-switch image when variation selected
- ✅ Update price based on variation
- ✅ Update stock status
- ✅ Disable Add to Cart if no variation selected

**Why:** Essential for variable products, directly impacts conversion

#### 1.3 Enhanced Buy Section
- ✅ Price display (regular + sale)
- ✅ Stock status with color coding
- ✅ Quantity selector (plus/minus buttons)
- ✅ Add to Cart button (with loading state)
- ✅ Product meta (SKU, categories)

**Why:** Core e-commerce functionality

#### 1.4 Product Information Sections
- ✅ Tabs for Description, Additional Info, Reviews
- ✅ Vertical layout (avoid horizontal tabs)
- ✅ Specifications table (from attributes)
- ✅ Expandable sections on mobile

**Why:** Users need detailed product info, research shows vertical > horizontal

---

### **Phase 2: Trust & Conversion (Next Sprint)** 🎯

#### 2.1 Reviews Section
- ⏳ Display existing WooCommerce reviews
- ⏳ Star rating display
- ⏳ Review count
- ⏳ Link to write review (WooCommerce native)

**Why:** Reviews are #2 most important content after images

#### 2.2 Trust Elements
- ⏳ Payment method icons
- ⏳ Secure checkout badge
- ⏳ Free shipping threshold
- ⏳ Return policy link

**Why:** Builds trust, reduces cart abandonment

#### 2.3 Related Products
- ⏳ Display related products (from API)
- ⏳ Horizontal carousel
- ⏳ Product cards

**Why:** Increases average order value

---

### **Phase 3: Advanced Features (Future)** 🚀

#### 3.1 Wishlist/Save for Later
- 📅 Add to wishlist button
- 📅 Wishlist page
- 📅 Persist across sessions

#### 3.2 Social Proof
- 📅 "X people viewing"
- 📅 "X sold today"
- 📅 Customer photos

#### 3.3 Enhanced Media
- 📅 Image zoom/lightbox
- 📅 Video support
- 📅 360° view

---

## 🛠️ Phase 1 Implementation Details

### Component Structure:
```
Product/
├── index.tsx (main component)
├── components/
│   ├── ImageGallery.tsx
│   ├── ThumbnailSlider.tsx
│   ├── VariationSelector.tsx
│   ├── BuySection.tsx
│   ├── ProductTabs.tsx
│   ├── SpecificationTable.tsx
│   └── ProductMeta.tsx
```

### State Management:
```typescript
// Product page state
const [product, setProduct] = useState<Product | null>(null);
const [selectedImage, setSelectedImage] = useState<string>('');
const [selectedVariation, setSelectedVariation] = useState<any>(null);
const [selectedAttributes, setSelectedAttributes] = useState<Record<string, string>>({});
const [quantity, setQuantity] = useState(1);
const [activeTab, setActiveTab] = useState('description');
```

### Key Features:

#### 1. Thumbnail Slider
```tsx
<div className="relative">
  {/* Prev Arrow */}
  <button onClick={scrollPrev} className="absolute left-0">
    <ChevronLeft />
  </button>
  
  {/* Scrollable Container */}
  <div ref={sliderRef} className="flex overflow-x-auto scroll-smooth gap-2">
    {images.map((img, i) => (
      <button
        key={i}
        onClick={() => setSelectedImage(img)}
        className={selectedImage === img ? 'ring-2 ring-primary' : ''}
      >
        <img src={img} />
      </button>
    ))}
  </div>
  
  {/* Next Arrow */}
  <button onClick={scrollNext} className="absolute right-0">
    <ChevronRight />
  </button>
</div>
```

#### 2. Variation Selector
```tsx
{product.attributes?.map(attr => (
  <div key={attr.name}>
    <label>{attr.name}</label>
    <select
      value={selectedAttributes[attr.name] || ''}
      onChange={(e) => handleAttributeChange(attr.name, e.target.value)}
    >
      <option value="">Choose {attr.name}</option>
      {attr.options.map(option => (
        <option key={option} value={option}>{option}</option>
      ))}
    </select>
  </div>
))}
```

#### 3. Auto-Switch Variation Image
```typescript
useEffect(() => {
  if (selectedVariation && selectedVariation.image) {
    setSelectedImage(selectedVariation.image);
  }
}, [selectedVariation]);

// Find matching variation
useEffect(() => {
  if (product?.variations && Object.keys(selectedAttributes).length > 0) {
    const variation = product.variations.find(v => {
      return Object.entries(selectedAttributes).every(([key, value]) => {
        return v.attributes[key] === value;
      });
    });
    setSelectedVariation(variation || null);
  }
}, [selectedAttributes, product]);
```

---

## 📐 Layout Design

```
┌─────────────────────────────────────────────────────────┐
│  Breadcrumb: Home > Shop > Category > Product Name     │
├──────────────────────┬──────────────────────────────────┤
│                      │  Product Name (H1)               │
│   Main Image         │  ⭐⭐⭐⭐⭐ (24 reviews)           │
│   (Large)            │                                  │
│                      │  $99.00 $79.00 (Save 20%)        │
│                      │  ✅ In Stock                      │
│                      │                                  │
│   [Thumbnail Slider] │  Short description text...       │
│   ◀ [img][img][img] ▶│                                  │
│                      │  Color: [Dropdown ▼]             │
│                      │  Size:  [Dropdown ▼]             │
│                      │                                  │
│                      │  Quantity: [-] 1 [+]             │
│                      │                                  │
│                      │  [🛒 Add to Cart]                │
│                      │  [♡ Add to Wishlist]             │
│                      │                                  │
│                      │  🔒 Secure Checkout              │
│                      │  🚚 Free Shipping over $50       │
│                      │  ↩️  30-Day Returns               │
├──────────────────────┴──────────────────────────────────┤
│                                                         │
│  [Description] [Additional Info] [Reviews (24)]        │
│  ─────────────                                         │
│                                                         │
│  Full product description here...                      │
│  • Feature 1                                           │
│  • Feature 2                                           │
│                                                         │
├─────────────────────────────────────────────────────────┤
│  Related Products                                       │
│  [Product] [Product] [Product] [Product]               │
└─────────────────────────────────────────────────────────┘
```

---

## 🎨 Styling Guidelines

### Colors:
```css
--price-sale: #DC2626 (red)
--stock-in: #10B981 (green)
--stock-low: #F59E0B (orange)
--stock-out: #EF4444 (red)
--primary-cta: var(--primary)
--border-active: var(--primary)
```

### Spacing:
```css
--section-gap: 2rem
--element-gap: 1rem
--thumbnail-size: 80px
--thumbnail-gap: 0.5rem
```

---

## ✅ Acceptance Criteria

### Image Gallery:
- [ ] Thumbnails scroll horizontally
- [ ] Show 4 thumbnails at a time on desktop
- [ ] Arrow buttons appear when >4 images
- [ ] Active thumbnail has colored border
- [ ] Click thumbnail changes main image
- [ ] Swipeable on mobile
- [ ] Smooth scroll animation

### Variation Selector:
- [ ] Dropdown for each attribute
- [ ] "Choose an option" placeholder
- [ ] When variation selected, image auto-switches
- [ ] Price updates based on variation
- [ ] Stock status updates
- [ ] Add to Cart disabled until all attributes selected
- [ ] Clear error message if incomplete

### Buy Section:
- [ ] Sale price shown in red
- [ ] Regular price strikethrough
- [ ] Savings percentage/amount shown
- [ ] Stock status color-coded
- [ ] Quantity buttons work correctly
- [ ] Add to Cart shows loading state
- [ ] Success toast with cart preview
- [ ] Cart count updates in header

### Product Info:
- [ ] Tabs work correctly
- [ ] Description renders HTML
- [ ] Specifications show as table
- [ ] Mobile: sections collapsible
- [ ] Smooth scroll to reviews

---

## 🚀 Ready to Implement

**Estimated Time:** 4-6 hours
**Priority:** HIGH
**Dependencies:** None (all APIs ready)

Let's build Phase 1 now! 🎯
