// gui object classes?
// Why am I doing this?
class auxillery_dialog {
	constructor (title) {
		var me = this;
		this.root = document.createElement("div");
		this.root.classList.add("dialog");
		this.title = "string" == typeof title ? title : "";
		var title_bar = document.createElement("div");
		title_bar.classList.add("title_bar");
		var titleText = document.createElement("span");
		titleText.innerText = this.title;
		titleText.classList.add("title_text");
		title_bar.appendChild(titleText);
		this.root.appendChild(title_bar);
		this.body = document.createElement("div");
		this.root.appendChild(me.body);
		var close = document.createElement("span");
		close.innerText = "<";
		close.classList.add("close");
		title_bar.appendChild(close);
		close.addEventListener("click", ()=>{
			me.root.classList.remove("focused");
		});
	}
}

// Functions

function systemMsg (message,level=0) { // abstraction?
	// Yes, but it allows us to easilly redirect error
	// output to where we want, for now, just the console...
	switch (level) {
		case 0:
			console.log("INFO: "+message);
			break;
		case 1:
			console.error("WARNING: "+message);
			break;
		case 2:
			console.error("ERROR: "+message);
			break;
		case 3: 
			console.log("DEBUG: "+message);
			break;
		default:
			console.log(message);
	} 
	// but later we will also have it push an error toast in the ui.
}

function inRange(target,min,max) {
	if (isNaN(target) || isNaN(min) || isNaN(max)) { return false; }
	return (min <= target && target <= max);
}

function invokeLibrary(e) {
	// Breaking this out of event so its not an
	// annon function, so we can swap it in and out
	var targetID = ((e.currentTarget.getAttribute("id")).split("pec"))[1];
	if (isNaN(targetID)) { return systemMsg("invokeLibrary targetID not a number",2); }
	var targetPec = app.gui["pec"+targetID];
	if (undefined == targetPec) { return systemMsg("invokeLibrary targetPec undefined: "+targetID,2); }
	if (!inRange(targetID,0,15)) { return systemMsg("invokeLibrary targetID out of range: "+targetPecIndex,2); }
	app.targetPec = targetPec;
	app.targetPecIndex = targetID;
	app.gui.library.root.classList.add("focused");
}

function clearPec (index=null) {
	if (!inRange(index,0,15)) { return systemMsg("clearPec was given an out of range index",2); }
	var targetPec = app.gui["pec"+index];
	if (undefined == targetPec) { return systemMsg("clearPec targetPec undefined",2); }
	targetPec.classList.add("empty");
	targetPec.innerHTML = "<p>+</p>";
	targetPec.addEventListener("click", invokeLibrary);
}

function setPec(pecTemplate=null, targetIndex=null) {
	if (null == pecTemplate) { return systemMsg("setPec was not provided data",2); }
	if (!(pecTemplate instanceof pec)) { return systemMsg("setPec was not provided a valid template",2); }
	if (isNaN(targetIndex)) { return systemMsg("setPec was not provided a valid targetIndex",2); }
	var targetPec = app.gui["pec"+targetIndex];
	targetPec.removeEventListener("click", invokeLibrary);
	targetPec.innerHTML = "";
	targetPec.classList.remove("empty");
	targetPec.appendChild(pecTemplate.DOM);
}

function repopGrid (board=null) {
	if (null == board) { return systemMsg("repopGrid was not provided data",2); }
	if (!(board instanceof pecBoard)) { return systemMsg("repopGrid was not provided data of type pecBoard",2); }
	board.pecs.forEach((p,i)=>{
		if (null == p) { return clearPec(i); }
		if (!(p instanceof pec)) { 
			systemMsg("Invalid Pec found, scrubbing and returning to null",1);
			board.pecs[i] = null; 
			return clearPec(i); 
		}
		setPec(p,i);
	});
}

function useThisPec (e) {
	var sourceID = ((e.currentTarget.getAttribute("id")).split("lPec"))[1];
	app.gui.library.root.classList.remove("focused");
	app.gui.library.body.childNodes.entries().forEach(p=>{
		p[1].getAttribute("id") == "lPec"+sourceID ? p[1].style.display = "none" : null;
	});
	app.currentBoard.pecs[app.targetPecIndex] = app.library[sourceID];
	repopGrid(app.currentBoard);
}

// Initialize gui

window.app = {};
app.gui = {};
app.gui.main = document.createElement("div");
app.gui.main.id = "root";
document.body.appendChild(app.gui.main);
app.gui.menu = document.createElement("nav");
app.gui.menu.id = "navigation";
app.gui.main.appendChild(app.gui.menu);
app.gui.view = document.createElement("div");
app.gui.view.id = "view";
app.gui.main.appendChild(app.gui.view);
// Library popup
app.gui.library = new auxillery_dialog("Library");
app.gui.library.body.classList.add("library_body");
app.gui.main.append(app.gui.library.root);
// Options popup
app.gui.options = new auxillery_dialog("Options");
// pre-populate grid with emptys
for (var x = 0; x < 16; x++) {
	var name = "pec"+x;
	var thisPec = document.createElement("span");
	app.gui[name] = thisPec;
	thisPec.classList.add("pecSlot");
	thisPec.id = name;
	clearPec(x);
	app.gui.view.appendChild(thisPec);
}
// Create our initial board
app.boards = [];
app.boards.push(new pecBoard());
app.currentBoard = app.boards[0];
repopGrid(app.currentBoard);

// Populate Library
app.library = [];
app.library.push(new pec("No",""));
app.library.push(new pec("Up",""));
app.library.push(new pec("More",""));
app.library.push(new pec("Drink",""));
app.library.push(new pec("Food",""));
// add more here
app.library.forEach((p,i)=>{
	var newPec = document.createElement("span");
	newPec.classList.add("pecSlot");
	newPec.innerText = p.word;
	newPec.id = "lPec"+i;
	newPec.addEventListener("click", useThisPec);
	app.gui.library.body.appendChild(newPec);
});