var currentTab = "";
function showHometab() {
	if (currentTab != "TabA") {
		currentTab = "TabA";
		showNoTabs();
		document.getElementById("TabA").style.backgroundColor = "lightBlue";
		document.getElementById("SectionA").style.display = "inline";
	}
}

function showTabB() {
	if (currentTab != "TabB") {
		currentTab = "TabB";
		showNoTabs();
		document.getElementById("TabB").style.backgroundColor = "lightBlue";
		document.getElementById("SectionB").style.display = "inline";
	}
	var uri = "http://redsox.uoa.auckland.ac.nz/BC/Open/Service.svc/brlist";
	var list = new XMLHttpRequest();
	list.open("GET", uri, true);
	list.setRequestHeader('Accept', 'application/json');
	list.onload = function () {
	var version_d = document.getElementById("showbrTab");
	version_d.innerHTML = list.responseText;
	console.log(list.responseText);
	var res = JSON.parse(list.responseText);
		console.log(JSON.stringify(res))
		showbrlist(res);
	}
	list.send(null);
}

function showTabC() {
	if (currentTab != "TabC") {
		currentTab = "TabC";
		showNoTabs();
		document.getElementById("TabC").style.backgroundColor = "lightBlue";
		document.getElementById("SectionC").style.display = "inline";
	}
	var uri2 = "http://redsox.uoa.auckland.ac.nz/BC/Open/Service.svc/booklist";
	var list = new XMLHttpRequest();
	list.open("GET", uri2, true);
	list.setRequestHeader('Accept', 'application/json');
	list.onload = function () {
	var version_d = document.getElementById("bookl");
	version_d.innerHTML = list.responseText;
	console.log(list.responseText);
	var res = JSON.parse(list.responseText);
		console.log(JSON.stringify(res))
		showbooklist(res);
	}
	list.send(null);
}

function showTabD() {
	if (currentTab != "TabD") {
		currentTab = "TabD";
		showNoTabs();
		document.getElementById("TabD").style.backgroundColor = "lightBlue";
		document.getElementById("SectionD").style.display = "inline";
	}
}

function showTabE() {
	if (currentTab != "TabE") {
		currentTab = "TabE";
		showNoTabs();
		document.getElementById("TabE").style.backgroundColor = "lightBlue";
		document.getElementById("SectionE").style.display = "inline";
	}
}

function showNoTabs() {
	document.getElementById("TabA").style.backgroundColor = "transparent";
	document.getElementById("TabB").style.backgroundColor = "transparent";
	document.getElementById("TabC").style.backgroundColor = "transparent";
	document.getElementById("TabD").style.backgroundColor = "transparent";
	document.getElementById("TabE").style.backgroundColor = "transparent";

	document.getElementById("SectionA").style.display = "none";
	document.getElementById("SectionB").style.display = "none";
	document.getElementById("SectionC").style.display = "none";
	document.getElementById("SectionD").style.display = "none";
	document.getElementById("SectionE").style.display = "none";
}

window.onload = function () {
	showHometab();
}

function searchbluray() {
	document.getElementById("showbrTab").innerHTML = null;
	action = document.getElementById("searchbr").value;
	var uri = "http://redsox.uoa.auckland.ac.nz/BC/Open/Service.svc/brsearch?term=" + action;
	var list = new XMLHttpRequest();
	list.open("GET", uri, true);
	list.setRequestHeader('Accept', 'application/json');
	list.onload = function () {
	var version_d = document.getElementById("showbrTab");
	version_d.innerHTML = list.responseText;
	console.log(list.responseText);
	var res = JSON.parse(list.responseText);
		console.log(JSON.stringify(res))
		showbrlist(res);
	}
	list.send(null);
}

function searchbooklist() {
	document.getElementById("bookl").innerHTML = null;
	action = document.getElementById("searchbl").value;
	var uri = "http://redsox.uoa.auckland.ac.nz/BC/Open/Service.svc/booksearch?term=" + action;
	var list = new XMLHttpRequest();
	list.open("GET", uri, true);
	list.setRequestHeader('Accept', 'application/json');
	list.onload = function () {
	var version_d = document.getElementById("bookl");
	version_d.innerHTML = list.responseText;
	console.log(list.responseText);
	var res = JSON.parse(list.responseText);
		console.log(JSON.stringify(res))
		showbooklist(res);
	}
	list.send(null);
}

function showbrlist(li) {
	var tableContent = "<tr class='blurays'></tr>\n";
	for (var i = 0; i < li.length; ++i) {
		var record = li[i];
		var addrs = record.Title;
		if (i & 1 == 1) { // odd row
			tableContent += "<tr class='orderOdd'>";
		}
		else { // even row
			tableContent += "<tr class='orderEven'>";
		}
		tableContent += "<td>" + "<img src=http://redsox.uoa.auckland.ac.nz/BC/Open/Service.svc/brimg?id="+ record.Id +"></td><td>" + addrs + "</td><td>" + "<button onclick=Buybr(" + JSON.stringify(record.Id) + ")>Buy</button><br><br>" + "</td></tr>\n";
	}
	document.getElementById("showbrTab").innerHTML = tableContent;
}

function showbooklist(dest) {
	var tableContent = "<tr class='bookTitles'></tr>\n";
	for (var i = 0; i < dest.length; ++i) {
		var record = dest[i];
		var addrs = record.Title;
		if (i & 1 == 1) { // odd row
			tableContent += "<tr class='orderOdd'>";
		}
		else { // even row
			tableContent += "<tr class='orderEven'>";
		}
		tableContent += "<td>" + "<img src=http://redsox.uoa.auckland.ac.nz/BC/Open/Service.svc/bookimg?id="+ record.Id + "></td><td>" + addrs + "</td><td>" + "<button onclick=Buy(" + JSON.stringify(record.Id) + ")>Buy</button><br><br>" + "</td></tr>\n";
	}
	document.getElementById("bookl").innerHTML = tableContent;
}

function Buy(item) {
	window.open("http://redsox.uoa.auckland.ac.nz/BC/Closed/Service.svc/bookbuy?id=" + item );
}

function Buybr(item) {
	window.open("http://redsox.uoa.auckland.ac.nz/BC/Closed/Service.svc/brbuy?id=" + item );
}

function Register() {
	Username = document.getElementById("Username").value;
	Pw = document.getElementById("Pw").value;
	Address = document.getElementById("Address").value;
	var uri= "http://redsox.uoa.auckland.ac.nz/BC/Open/Service.svc/register";
	var xhr= new XMLHttpRequest();
	xhr.open("POST", uri, true);
	xhr.setRequestHeader("Content-Type", "application/json;charset=UTF-8");
	var info = "{\"Address\":" + "\"" + Address + "\" , \"Name\":" + "\"" + Username + "\" , \"Password\":" + "\"" + Pw + "\"}";
	xhr.onload= function() {
		window.alert("you have been registered!")
	}
	xhr.send(info);
}

function Save() {
	comment = document.getElementById("comment").value;
	name = document.getElementById("name").value;
	var uri= "http://redsox.uoa.auckland.ac.nz/BC/Open/Service.svc/comment?name=" + name;
	var xhr= new XMLHttpRequest();
	xhr.open("POST", uri, true);
	xhr.setRequestHeader("Content-Type", "application/json;charset=UTF-8");
	xhr.onload= function() {
	document.getElementById("com").src = document.getElementById("com").src
	}
	xhr.send(JSON.stringify(comment));
}