cimpress

function highOrderFun() {
    return function() {
        // 
    }
}

// url="xyz.com"

// function fun() {
    
//     const response = fetch
// }


// Given a cart  with products and Coupons 

// N% off coupons, such as a “10% off coupon”

// P% off the next item coupons , such as “take 20% off the next item in your cart”

// $D off of the Nth product of type T, such as “take $5 off your third business card holder”

// $10 postcard sorter
// Coupon: Take $2 off your 2nd postcard sorter
// Coupon: 25% off each individual item
// Coupon: Take 10% off the next item in the cart
// 
// $10 postcard sorter

// Total = ($10 * 75%) + (($10 - $2) * 75% * 90%) = $7.50 + $5.40 = $12.90


interface CouponItem {
    type: "PRODUCT" | "COUPON"
    percentage: Number
    appliedOn: "ALL_ITEM" | "NEXT_ITEM" | "N%_ON_NTH_ITEM"
    nth: Number
    productType: String
}

interface Item {
    type: "PRODUCT" | "COUPON"
    price: Number
    name: String
    productType: String
    price: Number
    details: ...
}

class Cart {
    const items: Items | CouptonItem [];
    const nthItemCoupons = {};
    const 
    
    function Cart() {
        this.items = items;
    }
    
    // function
    
    function getCartTotal() {
        let cartTotal = 0;
        
        const allItemsCoupon = this.items.filter(item => item.type === 'COUPON' && item.appliedOn === 'ALL_ITEMS')
        
        const totalOffAllItems = allItemsCoupon.reduce((total, item) => total + item.percentage, 0);
        
        
        const nthItemCoupon = this.items.forEach(item => 
            { if (item.type === 'COUPON' && item.appliedOn === 'N%_ON_NTH_ITEM') {
                
                this.nthItemCoupons[item.productType] = {
                    order: item.nth;
                    percentage: item.percentage
                }
            }
            });
            
        const productOrder = {};
        
        
        this.items.forEarch((item, index) => {
            const itemType = item.type;
    
            if (itemType === 'PRODUCT') {
                if (productOrder[item.productType] !=== undefined) {
                    productOrder[item.productType] += 1;
                } 
                
                // apply all_items coupon
                let effectivePrice = item.price - (item.price * totalOffAllItems)/100;
                
                // apply next item coupon if any
                if (index > 0 && this.items[index-1].type === 'COUPON' && this.items[index-1].appliedOn === 'NEXT_ITEM') {
                    effectivePrice -= (item.price*this.items[index-1].percentage)/100;
                }
                
                // apply third type of coupon
                if (this.nthItemCoupons[item.type] !== undefined) {
                    this.nthItemCoupons[item.type]['order'] === productOrder[item.type]
                } {
                    effectivePrice -= (item.price*this.nthItemCoupons[item.type].percentage)/100;
                }
                
                cartTotal += effectivePrice;
            }
        })
    }
}