"use strict";
/**************************************************************************
Display cookie consent banner
**************************************************************************/
function display_cookie_consent_banner()
	{ document.getElementById("cookie_consent_banner").style.position="fixed";
	document.getElementById("cookie_consent_banner").style.width='100%';
	document.getElementById("cookie_consent_banner").style.bottom=0;
	document.getElementById("cookie_consent_banner").style.left=0;
	document.getElementById("cookie_consent_banner").style.margin=0;
	document.getElementById("cookie_consent_banner").style.textAlign="center";
	document.getElementById("cookie_consent_banner").style.padding="20px";
	
	document.getElementById("cookie_consent_banner").innerHTML = `<center>Giv samtykke til følgende cookies</center><br>
		<span><input type="checkbox" class="cookie_consent" id="cookie_consent_essential" checked disabled> Essentielle</span> 
		<span><input type="checkbox" class="cookie_consent" id="cookie_consent_settings"> Indstillinger</span> 
		<span><input type="checkbox" class="cookie_consent" id="cookie_consent_statistics"> Statistik</span> 
		<span><input type="checkbox" class="cookie_consent" id="cookie_consent_marketing"> Marketing</span> 
		<button class="cookie_consent" onclick="set_cookie_consent();">Accepter valgte</button> <button class="cookie_consent" onclick="set_cookie_consent(\'all\');">Accepter alle</button>`;	
	
	if (get_cookie('cookie_consent_essential')!=true)
		{ document.getElementById("cookie_consent_banner").style.backgroundColor="red";
		}
	else
		{ document.getElementById("cookie_consent_banner").style.backgroundColor="green";
		
		if (get_cookie("cookie_consent_settings")==true)
			document.getElementById('cookie_consent_settings').checked = "checked";
		if (get_cookie("cookie_consent_statistics")==true)
			document.getElementById('cookie_consent_statistics').checked = "checked";
		if (get_cookie("cookie_consent_marketing")==true)
			document.getElementById('cookie_consent_marketing').checked = "checked";
		}
	}

/**************************************************************************
Cookie consent set
**************************************************************************/
function set_cookie_consent(all_cookies)
	{ if (typeof all_cookies !== 'undefined')
		{ if (all_cookies="all")
			{ document.getElementById('cookie_consent_settings').checked=true;
			document.getElementById('cookie_consent_statistics').checked=true;
			document.getElementById('cookie_consent_marketing').checked=true;
			}
		}
		
	if (document.getElementById('cookie_consent_essential').checked==true)
		set_cookie('cookie_consent_essential',true,99*365*24*60*60*1000);
	else
		delete_cookie('cookie_consent_settings');
		
	if (document.getElementById('cookie_consent_settings').checked==true)
		set_cookie('cookie_consent_settings',true,99*365*24*60*60*1000);
	else
		delete_cookie('cookie_consent_settings');
	
	if (document.getElementById('cookie_consent_statistics').checked==true)
		set_cookie('cookie_consent_statistics',true,99*365*24*60*60*1000);
	else
		delete_cookie('cookie_consent_statistics');
	
	if (document.getElementById('cookie_consent_marketing').checked==true)
		set_cookie('cookie_consent_marketing',true,99*365*24*60*60*1000);
	else
		delete_cookie('cookie_consent_marketing');
	
	// Gem info om, at vi har spurgt til cookie_consent:
	set_cookie('cookie_consent',true,99*365*24*60*60*1000);
	
	let cookie_consent_banner = document.getElementById('cookie_consent_banner');
	cookie_consent_banner.innerHTML="";
	cookie_consent_banner.style=null;
		
	}
/**************************************************************************
Cookie set
**************************************************************************/
function set_cookie(name, value, days) 
	{ /* alert("name:"+name);
	let cookie_cat=-1;
	switch (name) 
		{ case 'show_vat': 
			cookie_cat=1;
		
		default: 
			cookie_cat = -1;
		}
	alert ("cookie_cat: "+cookie_cat);
	*/
	const date = new Date();
	date.setTime(date.getTime() + (days*24*60*60*1000));
	const expires = "expires=" + date.toUTCString();

	//document.cookie = name+"="+value+"; " + expires + "; path=/; Secure; SameSite=Strict";
	  document.cookie = name+"="+value+"; " + expires + "; path=/;";
    }

/**************************************************************************
Cookie get
**************************************************************************/
function get_cookie(name) {
    let nameEQ = name + "=";
    let cookies_array = document.cookie.split(';');
    for(let i=0; i<cookies_array.length; i++) 
		{ let cookie = cookies_array[i];
        while (cookie.charAt(0) == ' ') 
			cookie = cookie.substring(1, cookie.length);
        if (cookie.indexOf(nameEQ) == 0)
			{ let return_value = cookie.substring(nameEQ.length, cookie.length);
			if (return_value==="false")
				return false;
			if (return_value==="true")
				return true;
			return return_value;
			}
    }
    return false;
}

/**************************************************************************
Cookie delete
**************************************************************************/
function delete_cookie(name) 
	{ document.cookie = name + '=; Max-Age=-99999999;';
	}

/**************************************************************************
Priser med/uden moms
**************************************************************************/
let show_vat = false;
show_vat = get_cookie("show_vat");// fra _cookie
if (show_vat!=true)
	show_vat = false;

/**************************************************************************
 Skift mellem visning af priser med/uden moms
**************************************************************************/
function toggle_vat() 
	{ if (show_vat==true)
			show_vat=false;
		else
			show_vat=true;
	
	const vat_fields = document.getElementsByName("vat_status");
	vat_fields.forEach((vat_field) => {
		if (show_vat==true)
			vat_field.innerText="inkl. moms";
		else
			vat_field.innerText="eks. moms";
		});
		
	const price_fields = document.getElementsByName("price");
	price_fields.forEach((price_field) => {
		if (show_vat==true)
			{ price_field.innerText=price_field.dataset.priceIncVat;
			}
		else
			{ price_field.innerText=price_field.dataset.priceExVat;
			}
		});
		
	//slet gammel cookie:
	delete_cookie("show_vat");
	//opret ny cookie:
	set_cookie("show_vat", String(show_vat),999999);
	}

/**************************************************************************
 Vælg visningssortering
**************************************************************************/	
function change_items_sortby() {
    // 1. Hent den valgte værdi fra dropdown'en (f.eks. 'oprettet_nyeste')
    const sortSelect = document.getElementById('sortby');
    const newSortValue = sortSelect.value;

    // 2. Opret et URL-objekt baseret på den aktuelle URL i browseren
    //    Dette gør det nemt at manipulere URL'ens dele.
    const currentUrl = new URL(window.location.href);

    // 3. Få adgang til URL'ens query-parametre (alt efter '?')
    const params = currentUrl.searchParams;

    // 4. Sæt 'sortering'-parameteren til den nye værdi.
    //    - Hvis 'sortering' findes, bliver værdien opdateret.
    //    - Hvis 'sortering' IKKE findes, bliver den tilføjet til URL'en.
    //    Andre parametre (som f.eks. 'kategori') bevares automatisk.
    params.set('sortering', newSortValue);

    // 5. Omdiriger browseren til den nye URL
    //    currentUrl.href indeholder nu den opdaterede URL.
    window.location.href = currentUrl.href;
}
/*function change_items_sortby()
	{ //slet gammel cookie:
	delete_cookie("items_sortby");
	//opret ny cookie:
	set_cookie("items_sortby", document.getElementById('sortby').value,999999);
	let sort_order_found = false;
	let current_path = window.location.href.split('/');
	let current_page = current_path[current_path.length-1];
	let parameters_array = current_page.split('?');
	let parameters = '';
	if (parameters_array.length>2)
		parameters = parameters_array[1].split('&');
	
	let all_parameters = '';
	let i = 0;
	while (i!=parameters.length)
		{ if (i==0) // filnavn.php
			;//all_parameters = parameters[i];
		else
			{ if (i==1) // ?første
				all_parameters = all_parameters+"?";
			else	//&næste
				all_parameters = all_parameters+"&";
			}
		
		if (parameters[i].split('=')[0]=="sortering")
			{ all_parameters = all_parameters+"sortering="+document.getElementById('sortby').value;
			sort_order_found = true;
			}
		else
			all_parameters = all_parameters+parameters[i];
		//alert (parameters[i]+ "\n"+all_parameters);
		i++;

		if (sort_order_found == false)
			{ if (i==1)
				all_parameters = all_parameters+'?';
			if (i>1)
				all_parameters = all_parameters+'&';
			
			all_parameters = all_parameters+"sortering="+document.getElementById('sortby').value;	
			} 
		}
	//window.location.href ='/'+all_parameters;
	alert('/'+current_page+all_parameters);
	} */
	
/**************************************************************************
 Lav en infobox og et overlay, så den kan klikkes væk
**************************************************************************/
function create_infobox()
	{ let overlay = document.createElement("div");
	overlay.id= "overlay";
	
	let infobox = document.createElement("div");
	infobox.id= "infobox";
	
	document.body.appendChild(overlay);
	document.getElementById("overlay").appendChild(infobox);
	overlay.addEventListener("click", () => {
		overlay.remove();
		infobox.remove();
		});
	return true;
	}

/**************************************************************************
 Gør add_to_cart buttons klikbare
**************************************************************************/
function add_to_cart_buttons_clickable() 
	{
	const buttons = document.getElementsByName("add_to_cart");
	buttons.forEach((button) => {
		button.addEventListener("click", function () { add_to_cart(this);});
		});
	}
	
/**************************************************************************
 Gør remove_from_cart buttons klikbare
**************************************************************************/
function remove_from_cart_buttons_clickable() 
	{
	const buttons = document.getElementsByName("remove_from_cart");
	buttons.forEach((button) => {
		button.addEventListener("click", function () { remove_from_cart(this);});
		});
	}

/**************************************************************************
 Læg i cart
**************************************************************************/
function add_to_cart(button)
	{ button.innerText="Lagt i kurv";
	create_infobox();
	
	let inventory_id = button.id;
	const xhr = new XMLHttpRequest();
	
	xhr.withCredentials = true;
	
	let url = "/cart.php?cmd=add_to_cart&inventory_id="+inventory_id+"&quantity=1";
	xhr.open('GET', url, true);
	
	xhr.onload = function() 
		{
		if (this.status === 200) 
			{ const responseData = JSON.parse(this.responseText);
			let response = "";
			if (responseData.add_to_cart=="success")
				response = button.value + " er lagt i din kurv";
			else
				response = button.value + " kunne ikke lægges i din kurv. "+responseData.errorText;
			response = response+"<p><a href=''>Fortsæt med at handle</a> eller <a href='checkout.php'>gå til kassen</a></p>";
			infobox.innerHTML = response;
			} 
		else 
			{ alert('Error:', this.statusText);
			}
		};
	
	xhr.onerror = function()
		{ console.error('Network Error');
		};
	
	xhr.send();
	}
	
/**************************************************************************
 Fjern fra cart
**************************************************************************/	
function remove_from_cart(button)
	{ create_infobox();
	let inventory_id = button.id;
	const xhr = new XMLHttpRequest();
	xhr.withCredentials = true;
	let url = "/cart.php?cmd=remove_from_cart&inventory_id="+inventory_id;
	xhr.open('GET', url, true);
	
	xhr.onload = function() 
		{
		if (this.status === 200) 
			{ const responseData = JSON.parse(this.responseText);
			let response = "";
			if (responseData.remove_from_cart=="success") 				{ document.getElementById("container_"+button.id).remove();  				
						if (document.getElementById('cart_sum')!=null)
					{ let cart_sum = 0;
					let i =0;
					let number_of_cart_lines = document.getElementsByName('line_sum').length;
					while (i!=number_of_cart_lines)
						{ cart_sum = cart_sum + parseInt(document.getElementsByName('line_sum')[i].innerText);
						i++;
						}
					document.getElementById('cart_sum').innerText=cart_sum;
					} // Slut på opdatering af cart_sum
					
				response = button.value + " er fjernet fra din kurv";
				
				}
			else
				response = button.value + " kunne ikke fjernes fra din kurv. "+responseData.errorText;
			response = response+"<p><a href=''>Fortsæt med at handle</a> eller <a href='checkout.php'>gå til kassen</a></p>";
			infobox.innerHTML = response;
			} 
		else 
			{ infobox.innerHTML = this.statusText;
			}
		};
	
	xhr.onerror = function()
		{ console.error('Network Error');
		};
	
	xhr.send();
	}
	
/**************************************************************************
Luk infobox
**************************************************************************/			
function close_infobox() {
	let overlay = document.getElementById("overlay");
	let infobox = document.getElementById("infobox");
	overlay.addEventListener("click", () => {
		overlay.remove();
		infobox.remove();
		});
	}
	
/**************************************************************************
Vis/skjul menu
**************************************************************************/			
function toggle_menu()	{
	if (document.getElementById('navigation').style.display=='none'||document.getElementById('navigation').style.display=='') { 
		document.getElementById('navigation').style.display='block';
		//document.getElementById('searchbar').style.display='block';		
		document.getElementById('menuopenclose').src='close.svg';
		document.getElementById('navigation').style.display='flex';
		}	
	else { 
		document.getElementById('navigation').style.display='none';
		//document.getElementById('searchbar').style.display='none';
		document.getElementById('menuopenclose').src='hamburger.svg';
		}	
	}

/**************************************************************************
Baggrundsfarve i menu**************************************************************************/			
function change_color(element_id) {
	let i = 0;
	while (i != document.getElementsByName('navigation').length)
		{ if (document.getElementsByName('navigation')[i].id==element_id) {
			document.getElementsByName('navigation')[i].style.backgroundColor='B7DB8E';
			}
		else {
			document.getElementsByName('navigation')[i].style.backgroundColor='E7F2D9';
			i++;
			}
		}
	}
	
/**************************************************************************
Vis/skjul CVR-box
**************************************************************************/			
function display_company_identifier_box()
	{ if (document.getElementById('company')!=null)
		{ if (document.getElementById('company').checked==true)
			{ document.getElementById('company_identifier_box').style.display='block';
			}	
		else
			{ document.getElementById('company_identifier_box').style.display='none';
			}	
		}
	}
		
function update_price_summary()
	{ let vat_rate = 0.25;

	let subtotal_price = 0;
	let subtotal_price_inc_vat = 0;
	let items = document.getElementsByName('price_line');
	for(let i = 0;i<items.length;i++)
		{alert(i+"!: "+items[i].dataset.priceExVat);
		subtotal_price = parseFloat(subtotal_price+items[i].dataset.priceExVat);
		}
	
	let shipping_method = document.getElementById('shipping_method');
	let shipping_price = shipping_method.options[shipping_method.selectedIndex].dataset.priceExVat;
	let shipping_price_inc_vat = 0;
	// Husk, at "Til betaling"-prisen skal være inkl. moms:
	let total_price_inc_vat = (subtotal_price+shipping_price)*(1+vat_rate);
	alert("nuer er vi med moms");
	if (show_vat==true)
		{ subtotal_price_inc_vat	= subtotal_price*vat_rate;
		shipping_price_inc_vat	= shipping_price*vat_rate;
		document.getElementsByName('vat_status')[0].innerText='inkl. moms';
		document.getElementById('shipping_price').dataset.priceIncVat = shipping_method.options[shipping_method.selectedIndex].dataset.priceIncVat;
		}
	else
		{ document.getElementsByName('vat_status')[0].innerText='eksl. moms';
		document.getElementById('shipping_price').innerText=shipping_method.options[shipping_method.selectedIndex].dataset.priceExVat;
		}
		alert("subtotal_price: "+ subtotal_price+"\nshipping_price: "+shipping_price);
	document.getElementById('total_vat_amount').innerText=(subtotal_price+shipping_price)*(vat_rate);
	}
	
function shipping_address_fields_mandatory()
	{ let is_required = !(document.getElementById('delivery_address_is_billing_address').checked==true)
	document.getElementById('delivery_name').required = is_required;
	document.getElementById('delivery_street').required = is_required;
	document.getElementById('delivery_zipcode').required = is_required;
	document.getElementById('delivery_city').required = is_required;
	}
	
function show_terms_sale()
	{ window.open('handelsbetingelser.php', 'terms_sale');
	}