//constants
//window.urlBase = "http://dev.laughingravenherbals.com:8081/";
//window.urlBase = "http://www.laughingravenherbals.com/";
window.urlBase = window.location.origin + "/";

//fetching items from server and/or local session storage
let savedItems = sessionStorage.getItem('items');
let fetchPromise = null;

if(!savedItems) {
    console.log("No stored items, fetching from server!");
    fetchPromise = fetch('items.json')
    .then(response=>response.json())
    .then(itemsJSON => {
        let itemsString = JSON.stringify(itemsJSON);
        sessionStorage.setItem('items', itemsString);
        return itemsString;
    });
} else {
    console.log("Using stored items");
    fetchPromise = Promise.resolve(savedItems);
}
fetchPromise = fetchPromise.then(itemsString => JSON.parse(itemsString));


//global number formatter
let formatter = new Intl.NumberFormat('en-US', {
        style: 'currency',
        currency: 'USD'
    });
    
//updating cart information
let allCookies = document.cookie;
console.log(`allCookies: ${allCookies}`);
let getCartContents = () => {
    let allCookies = document.cookie;
    let regex = /cart=(.*);/;
    let result = allCookies.match(regex);
    let cart = {};
    if(result && result.length > 1) {
        try {
            cart = JSON.parse(result[1]);
        } catch (e) {
            console.log("couldn't parse weird cookie: "+result[1]);
        }
    }
    return cart;
};

let setCartContents = (contentsObject) => {
    document.cookie = `cart=${JSON.stringify(contentsObject)}`;
    document.cookie = `max-age=${60*60*24*7}`; //a week
};

let getCartTotals = () => {
    let cart = getCartContents(); //{..}
    let itemsSubtotal = 0;
    let itemCount = 0;

    let numSmallItems = 0;
    let numLargeItems = 0;
    for(let fullSKU in cart) {
        let cartItem = cart[fullSKU]; 
        itemsSubtotal += (cartItem.quantity * cartItem.price);
        
        console.log(cart);
        if(cartItem.sku.startsWith('ext-')) {
            if(cartItem.size.startsWith('8')) {
                numLargeItems += cartItem.quantity;
            } else {
                numSmallItems += cartItem.quantity;
            }
        } else if(cartItem.sku.startsWith('bb-') || cartItem.sku.startsWith('oil-')) {
            numSmallItems += cartItem.quantity;
        } else { //soaps are big
            let regex = /(\d) \w*/m;
            let groupSize = 1;
            try {
                let matches = cartItem.size.match(regex); //["3 bars", "3"]
                groupSize = Number(matches[1]);
            } catch (e) {
                console.error("Problem parsing item description for group size");
                console.log(e);
            }
            numLargeItems += groupSize*cartItem.quantity;
            
            
//        } else if(cartItem.sku.startsWith('bb-')) {
//            if(cartItem.size.startsWith('1')) {
//                numSmallItems += cartItem.quantity;
//            } else {
//                numSmallItems += 6 * cartItem.quantity; //six bath bombs per unit
//            }
//        } else if(cartItem.sku.startsWith('soap-')) {
//            if(cartItem.size.startsWith('1')) {
//                numSmallItems += cartItem.quantity;
//            } else if(cartItem.size.startsWith('3')) {
//                numSmallItems += 3 * cartItem.quantity;
//            } else {
//                numSmallItems += cartItem.quantity;
//            }
//        }
//        } else {
//            numSmallItems += cartItem.quantity;
        }
    }
    itemCount = numSmallItems + numLargeItems;
    //calculating shipping right now is just a guess of how many items that I can fit per box
    //I can fit about 5 small items in a USPS flat rate small envelop or small box ($10 each)
    //and 10 large (8oz bottle) items in a USPS priority box A which is about $20
    let shippingSubtotal = 0;
    if(numLargeItems > 0) {
        shippingSubtotal = 18*(1 + Math.floor(itemCount/10)); //10 items per $18 box
    } else {
        if(itemCount == 0) shippingSubtotal = 0;
        else if(itemCount < 5) shippingSubtotal = 10; //small box
        else if(itemCount < 15) shippingSubtotal = 18; //medium box
        else if(itemCount < 36) shippingSubtotal = 25; //large flat rate box
        else shippingSubtotal = 18*(1 + Math.floor(itemCount/18)); //15 items per $18 box
    }
    console.log(`shipping calculation, numLargeItems: ${numLargeItems}, numSmallItems: ${numSmallItems}, itemCount: ${itemCount}`)
    return {itemsSubtotal:itemsSubtotal, shippingSubtotal:shippingSubtotal, total:(itemsSubtotal + shippingSubtotal)};
};

let updateCartBadge = () => {
    let cart = getCartContents();
    console.log(`cart length: ${Object.keys(cart).length}`);
    if (Object.keys(cart).length > 0) {
        let cartBadgeDiv = document.getElementById('cart-badge');
        if (cartBadgeDiv) {
            let numItems = 0;
            for(let fullSKU in cart) {
                let cartItem = cart[fullSKU];
                numItems += Number(cartItem.quantity);
            }
            cartBadgeDiv.classList.remove('hidden');
            cartBadgeDiv.innerHTML = numItems;
        }
    }
};

document.addEventListener('DOMContentLoaded', (e) => {
    updateCartBadge();
});