Implements direct-to-cart functionality for landing page CTAs.
Features:
- Parse URL parameters: ?add-to-cart=123
- Support simple products: ?add-to-cart=123
- Support variable products: ?add-to-cart=123&variation_id=456
- Support quantity: ?add-to-cart=123&quantity=2
- Auto-navigate to cart after adding
- Clean URL after adding (remove parameters)
- Toast notification on success/error
Usage examples:
1. Simple product:
https://site.com/store?add-to-cart=332
2. Variable product:
https://site.com/store?add-to-cart=332&variation_id=456
3. With quantity:
https://site.com/store?add-to-cart=332&quantity=3
Flow:
- User clicks CTA on landing page
- Redirects to SPA with add-to-cart parameter
- SPA loads, hook detects parameter
- Adds product to cart via API
- Navigates to cart page
- Shows success toast
Works with both SPA modes:
- Full SPA: loads shop, adds to cart, navigates to cart
- Checkout Only: loads cart, adds to cart, stays on cart
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