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WooNooW/CUSTOMER_SPA_MASTER_PLAN.md
dwindown f63108f157 docs: Clean up obsolete docs and create Customer SPA Master Plan 
Documentation Cleanup:
✅ Archived 6 obsolete/completed docs to archive/:
- CUSTOMER_DATA_FLOW_ANALYSIS.md
- CALCULATION_EFFICIENCY_AUDIT.md
- PHASE_COMPLETE.md
- PRODUCT_FORM_UX_IMPROVEMENTS.md
- PROGRESS_NOTE.md
- TASKS_SUMMARY.md

New Documentation:
✅ CUSTOMER_SPA_MASTER_PLAN.md - Comprehensive strategy

Includes:
1. Architecture Overview
   - Hybrid plugin architecture
   - customer-spa folder structure
   - Frontend/Backend separation

2. Deployment Modes
   - Shortcode Mode (default, works with any theme)
   - Full SPA Mode (maximum performance)
   - Hybrid Mode (best of both worlds)

3. Feature Scope
   - Phase 1: Core Commerce (MVP)
   - Phase 2: Enhanced Features
   - Phase 3: Advanced Features

4. UX Best Practices
   - Research-backed patterns (Baymard Institute)
   - Cart UX (drawer, mini cart, shipping threshold)
   - Checkout UX (progress, guest, autocomplete)
   - Product Page UX (images, CTA, social proof)

5. Technical Stack
   - React 18 + Vite
   - Zustand + React Query
   - TailwindCSS + shadcn/ui
   - PWA with Workbox

6. Implementation Roadmap
   - 10 sprints (20 weeks)
   - Foundation → Catalog → Cart → Account → Polish

7. API Requirements
   - 15+ new endpoints needed
   - Shop, Cart, Checkout, Account APIs

8. Performance Targets
   - Core Web Vitals
   - Bundle sizes
   - Load times

9. Settings & Configuration
   - Frontend mode selection
   - Feature toggles
   - Customization options

10. Migration Strategy
    - From WooCommerce default
    - Rollback plan
    - Success metrics

Result: Clear, actionable plan for Customer SPA development!
2025-11-21 12:07:38 +07:00

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# Customer SPA Master Plan
## WooNooW Frontend Architecture & Implementation Strategy
**Version:** 1.0
**Date:** November 21, 2025
**Status:** Planning Phase
---
## Executive Summary
This document outlines the comprehensive strategy for building WooNooW's customer-facing SPA, including architecture decisions, deployment modes, UX best practices, and implementation roadmap.
### Key Decisions
✅ **Hybrid Architecture** - Plugin includes customer-spa with flexible deployment modes
✅ **Progressive Enhancement** - Works with any theme, optional full SPA mode
✅ **Mobile-First PWA** - Fast, app-like experience on all devices
✅ **SEO-Friendly** - Server-side rendering for product pages, SPA for interactions
---
## Table of Contents
1. [Architecture Overview](#architecture-overview)
2. [Deployment Modes](#deployment-modes)
3. [Feature Scope](#feature-scope)
4. [UX Best Practices](#ux-best-practices)
5. [Technical Stack](#technical-stack)
6. [Implementation Roadmap](#implementation-roadmap)
7. [API Requirements](#api-requirements)
8. [Performance Targets](#performance-targets)
---
## Architecture Overview
### Hybrid Plugin Architecture
```
woonoow/
├── admin-spa/ # Admin interface (existing)
├── customer-spa/ # Customer frontend (NEW)
│ ├── src/
│ │ ├── pages/
│ │ │ ├── Shop/ # Product listing
│ │ │ ├── Product/ # Product detail
│ │ │ ├── Cart/ # Shopping cart
│ │ │ ├── Checkout/ # Checkout process
│ │ │ ├── Account/ # My Account dashboard
│ │ │ └── Orders/ # Order history
│ │ ├── components/
│ │ │ ├── ProductCard/
│ │ │ ├── CartDrawer/
│ │ │ ├── CheckoutForm/
│ │ │ └── AddressForm/
│ │ └── lib/
│ │ ├── api/
│ │ ├── cart/ # Cart state management
│ │ └── checkout/ # Checkout logic
│ └── public/
├── includes/
│ ├── Admin/
│ └── Frontend/
│ ├── Shortcodes/ # [woonoow_cart], [woonoow_checkout]
│ ├── SPA/ # Full SPA mode handler
│ └── Api/ # Customer API endpoints
└── woonoow.php
```
---
## Deployment Modes
### Mode 1: Shortcode Mode (Default) ⭐ RECOMMENDED
**Use Case:** Works with ANY WordPress theme
**How it works:**
```php
// In theme template or page builder
[woonoow_shop]
[woonoow_cart]
[woonoow_checkout]
[woonoow_account]
```
**Benefits:**
- ✅ Compatible with all themes
- ✅ Works with page builders (Elementor, Divi, etc.)
- ✅ Progressive enhancement
- ✅ SEO-friendly (SSR for products)
- ✅ Easy migration from WooCommerce
**Architecture:**
- Theme provides layout/header/footer
- WooNooW provides interactive components
- Hybrid SSR + SPA islands pattern
---
### Mode 2: Full SPA Mode
**Use Case:** Maximum performance, app-like experience
**How it works:**
```php
// Settings > Frontend > Mode: Full SPA
// WooNooW takes over entire frontend
```
**Benefits:**
- ✅ Fastest performance
- ✅ Smooth page transitions
- ✅ Offline support (PWA)
- ✅ App-like experience
- ✅ Optimized for mobile
**Architecture:**
- Single-page application
- Client-side routing
- Theme provides minimal wrapper
- API-driven data fetching
---
### Mode 3: Hybrid Mode
**Use Case:** Best of both worlds
**How it works:**
- Product pages: SSR (SEO)
- Cart/Checkout: SPA (UX)
- My Account: SPA (performance)
**Benefits:**
- ✅ SEO for product pages
- ✅ Fast interactions for cart/checkout
- ✅ Balanced approach
- ✅ Flexible deployment
---
## Feature Scope
### Phase 1: Core Commerce (MVP)
#### 1. Product Catalog
- Product listing with filters
- Product detail page
- Product search
- Category navigation
- Product variations
- Image gallery with zoom
- Related products
#### 2. Shopping Cart
- Add to cart (AJAX)
- Cart drawer/sidebar
- Update quantities
- Remove items
- Apply coupons
- Shipping calculator
- Cart persistence (localStorage)
#### 3. Checkout
- Single-page checkout
- Guest checkout
- Address autocomplete
- Shipping method selection
- Payment method selection
- Order review
- Order confirmation
#### 4. My Account
- Dashboard overview
- Order history
- Order details
- Download invoices
- Track shipments
- Edit profile
- Change password
- Manage addresses
- Payment methods
---
### Phase 2: Enhanced Features
#### 5. Wishlist
- Add to wishlist
- Wishlist page
- Share wishlist
- Move to cart
#### 6. Product Reviews
- Write review
- Upload photos
- Rating system
- Review moderation
- Helpful votes
#### 7. Quick View
- Product quick view modal
- Add to cart from quick view
- Variation selection
#### 8. Product Compare
- Add to compare
- Compare table
- Side-by-side comparison
---
### Phase 3: Advanced Features
#### 9. Subscriptions
- Subscription products
- Manage subscriptions
- Pause/resume
- Change frequency
- Update payment method
#### 10. Memberships
- Member-only products
- Member pricing
- Membership dashboard
- Access control
#### 11. Digital Downloads
- Download manager
- License keys
- Version updates
- Download limits
---
## UX Best Practices
### Research-Backed Patterns
Based on Baymard Institute research and industry leaders:
#### Cart UX
✅ **Persistent cart drawer** - Always accessible, slides from right
✅ **Mini cart preview** - Show items without leaving page
✅ **Free shipping threshold** - "Add $X more for free shipping"
✅ **Save for later** - Move items to wishlist
✅ **Stock indicators** - "Only 3 left in stock"
✅ **Estimated delivery** - Show delivery date
#### Checkout UX
✅ **Progress indicator** - Show steps (Shipping → Payment → Review)
✅ **Guest checkout** - Don't force account creation
✅ **Address autocomplete** - Google Places API
✅ **Inline validation** - Real-time error messages
✅ **Trust signals** - Security badges, SSL indicators
✅ **Mobile-optimized** - Large touch targets, numeric keyboards
✅ **One-page checkout** - Minimize steps
✅ **Save payment methods** - For returning customers
#### Product Page UX
✅ **High-quality images** - Multiple angles, zoom
✅ **Clear CTA** - Prominent "Add to Cart" button
✅ **Stock status** - In stock / Out of stock / Pre-order
✅ **Shipping info** - Delivery estimate
✅ **Size guide** - For apparel
✅ **Social proof** - Reviews, ratings
✅ **Related products** - Cross-sell
---
## Technical Stack
### Frontend
- **Framework:** React 18 (with Suspense, Transitions)
- **Routing:** React Router v6
- **State:** Zustand (cart, checkout state)
- **Data Fetching:** TanStack Query (React Query)
- **Forms:** React Hook Form + Zod validation
- **Styling:** TailwindCSS + shadcn/ui
- **Build:** Vite
- **PWA:** Workbox (service worker)
### Backend
- **API:** WordPress REST API (custom endpoints)
- **Authentication:** WordPress nonces + JWT (optional)
- **Session:** WooCommerce session handler
- **Cache:** Transients API + Object cache
### Performance
- **Code Splitting:** Route-based lazy loading
- **Image Optimization:** WebP, lazy loading, blur placeholders
- **Caching:** Service worker, API response cache
- **CDN:** Static assets on CDN
---
## Implementation Roadmap
### Sprint 1-2: Foundation (2 weeks)
- [ ] Setup customer-spa build system
- [ ] Create base layout components
- [ ] Implement routing
- [ ] Setup API client
- [ ] Cart state management
- [ ] Authentication flow
### Sprint 3-4: Product Catalog (2 weeks)
- [ ] Product listing page
- [ ] Product filters
- [ ] Product search
- [ ] Product detail page
- [ ] Product variations
- [ ] Image gallery
### Sprint 5-6: Cart & Checkout (2 weeks)
- [ ] Cart drawer component
- [ ] Cart page
- [ ] Checkout form
- [ ] Address autocomplete
- [ ] Shipping calculator
- [ ] Payment integration
### Sprint 7-8: My Account (2 weeks)
- [ ] Account dashboard
- [ ] Order history
- [ ] Order details
- [ ] Profile management
- [ ] Address book
- [ ] Download manager
### Sprint 9-10: Polish & Testing (2 weeks)
- [ ] Mobile optimization
- [ ] Performance tuning
- [ ] Accessibility audit
- [ ] Browser testing
- [ ] User testing
- [ ] Bug fixes
---
## API Requirements
### New Endpoints Needed
```
GET /woonoow/v1/shop/products
GET /woonoow/v1/shop/products/:id
GET /woonoow/v1/shop/categories
GET /woonoow/v1/shop/search
POST /woonoow/v1/cart/add
POST /woonoow/v1/cart/update
POST /woonoow/v1/cart/remove
GET /woonoow/v1/cart
POST /woonoow/v1/cart/apply-coupon
POST /woonoow/v1/checkout/calculate
POST /woonoow/v1/checkout/create-order
GET /woonoow/v1/checkout/payment-methods
GET /woonoow/v1/checkout/shipping-methods
GET /woonoow/v1/account/orders
GET /woonoow/v1/account/orders/:id
GET /woonoow/v1/account/downloads
POST /woonoow/v1/account/profile
POST /woonoow/v1/account/password
POST /woonoow/v1/account/addresses
```
---
## Performance Targets
### Core Web Vitals
- **LCP (Largest Contentful Paint):** < 2.5s
- **FID (First Input Delay):** < 100ms
- **CLS (Cumulative Layout Shift):** < 0.1
### Bundle Sizes
- **Initial JS:** < 150KB (gzipped)
- **Initial CSS:** < 50KB (gzipped)
- **Route chunks:** < 50KB each (gzipped)
### Page Load Times
- **Product page:** < 1.5s (3G)
- **Cart page:** < 1s
- **Checkout page:** < 1.5s
---
## Settings & Configuration
### Frontend Settings Panel
```
WooNooW > Settings > Frontend
├── Mode
│ ○ Disabled (use theme)
│ ● Shortcodes (default)
│ ○ Full SPA
├── Features
│ ☑ Product catalog
│ ☑ Shopping cart
│ ☑ Checkout
│ ☑ My Account
│ ☐ Wishlist (Phase 2)
│ ☐ Product reviews (Phase 2)
├── Performance
│ ☑ Enable PWA
│ ☑ Offline mode
│ ☑ Image lazy loading
│ Cache duration: 1 hour
└── Customization
Primary color: #000000
Font family: System
Border radius: 8px
```
---
## Migration Strategy
### From WooCommerce Default
1. **Install WooNooW** - Keep WooCommerce active
2. **Enable Shortcode Mode** - Test on staging
3. **Replace pages** - Cart, Checkout, My Account
4. **Test thoroughly** - All user flows
5. **Go live** - Switch DNS
6. **Monitor** - Analytics, errors
### Rollback Plan
- Keep WooCommerce pages as backup
- Settings toggle to disable customer-spa
- Fallback to WooCommerce templates
---
## Success Metrics
### Business Metrics
- Cart abandonment rate: < 60% (industry avg: 70%)
- Checkout completion rate: > 40%
- Mobile conversion rate: > 2%
- Page load time: < 2s
### Technical Metrics
- Lighthouse score: > 90
- Core Web Vitals: All green
- Error rate: < 0.1%
- API response time: < 200ms
---
## Competitive Analysis
### Shopify Hydrogen
- **Pros:** Fast, modern, React-based
- **Cons:** Shopify-only, complex setup
- **Lesson:** Simplify developer experience
### WooCommerce Blocks
- **Pros:** Native WooCommerce integration
- **Cons:** Limited customization, slow
- **Lesson:** Provide flexibility
### SureCart
- **Pros:** Simple, fast checkout
- **Cons:** Limited features
- **Lesson:** Focus on core experience first
---
## Next Steps
1. ✅ Review and approve this plan
2. ⏳ Create detailed technical specs
3. ⏳ Setup customer-spa project structure
4. ⏳ Begin Sprint 1 (Foundation)
---
**Decision Required:** Approve this plan to proceed with implementation.
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