var orden = new Map();
var menu = new Map();
menu.set('Pasta',[
    "Gardenia",
    "Primavera",
    "Carbonara",
    "Carnivorum",
    "Primavera con pollo",
    "Chicken carbonara",
    "Al pesto",
    "Pollo marsala",
    "Chicken and shrimp"
]);
menu.set('Pizzeta', [
    "Simply Cheese",
    "Carbonara",
    "Al pesto",
    "Beef & Onion",
    "Pepperoni",
    "Bacon & Mushroom",
    "Churrasco Hollandaise",
    "Mr Wedge",
    "BBQ Meatlovers"
]);

function add_item(item, category, num){
    var val = parseInt(document.getElementsByName(category + 'qty' + num)[0].value);
    var selection = category + " " + item;
    if (!orden.get(selection)){
        orden.set(selection, val);
    }

    else{
        orden.set(selection, orden.get(selection) + val);    
    }
    localStorage.orden_local = JSON.stringify(Array.from(orden.entries()));
    console.log(orden);
}

function item_display(category){
    var cat_list = menu.get(category);
    var page = document.getElementById(category + "Div");
    var card_collection = "";
    for(var i = 0; i < cat_list.length; i++){
        card_collection += `<div class="card" style="width: 18rem;">
       <img class="card-img-top" src="img/` + category + `.png" alt="Image of ` + category + `">
       <div class="card-body">
           <h5 class="card-title">` + cat_list[i] + `</h5>
           <div style = "width: 100px; display: table; margin: 4px; padding: 1px;">
                <div style = "display: table-cell; width: 100%;">
                    <input style = "width: 100%; margin: 1px;" type = "number" min = "1" value = "1" name = "`+ category + `qty` + i + `">
                </div>
                <div style = "padding: 5px">
                    <button class="btn btn-primary btn-sm" onclick = "add_item('` + cat_list[i] + `', '` + category + `', `+ i + `)">Add</buton>
                </div>
           </div>
        </div>
        </div>`;
    }
    card_collection += "<br>";
    page.innerHTML = card_collection;
}

function order_summary(){
    try{
        orden = new Map(JSON.parse(localStorage.orden_local));
    }
    catch(err){
        alert("ERROR: Orden invalida")
        window.location.href = "index.html";
    }
    localStorage.orden_local = []
    var page = document.getElementById("rows");
    var orden_table = "";
    for(let [key,value] of orden){
        orden_table += `<tr>
            <td>` + key + `</td>
            <td>` + value + `</td>
        </tr>`
    }
    page.innerHTML = orden_table;
}