ShopQuick - End shopping trip

shoppinglist.swift

class ShoppingListManager : ProductManager {
    
    static let sharedInstance = ShoppingListManager()
    
    let prioritiesManager = PrioritiesManager.sharedInstance
    
    func markPurchasedAtIndex(index: Int) {
        
        let product = self.products[index]
        
        product.purchased = true
        
        self.prioritiesManager.addProduct(product)
        
        if !self.hasUnpurchasedItems() {
            self.prioritiesManager.lastProductPurchased = nil
        }
        
        self.saveProductsToDefaults()
    }
    
    func hasUnpurchasedItems() -> Bool {
        let unpurchased = self.products.filter { (p : Product) -> Bool in
            return !p.purchased
        }
        return unpurchased.count > 0
    }
    
}