function createFileEntry(fileObject, element){
	let info = fileObject.info;
	let file = document.createElement("div");
	file.className = "file";
	file.innerHTML = `
		<label class="check" title="Enable or disable file"><input type="checkbox" ${info.enabled?"checked='true'":""}><span></span></label>
		<span class="file-name">${info.name}</span>
		<span class="file-type" data-type="${info.type}">${info.type}</span>
		<div class="file-icons">
			<span class="file-icon file-edit" title="Edit file">
				<svg viewBox="0 0 48 48">
					<path d="M6 34.5v7.5h7.5l22.13-22.13-7.5-7.5-22.13 22.13zm35.41-20.41c.78-.78.78-2.05 0-2.83l-4.67-4.67c-.78-.78-2.05-.78-2.83 0l-3.66 3.66 7.5 7.5 3.66-3.66z"/>
				</svg>
			</span>
			<span class="file-icon file-delete" title="Delete file">
				<svg viewBox="0 0 48 48">
					<path d="M12 38c0 2.21 1.79 4 4 4h16c2.21 0 4-1.79 4-4v-24h-24v24zm26-30h-7l-2-2h-10l-2 2h-7v4h28v-4z"/>
				</svg>
			</span>
		</div>
	`;

	function setDataset(){
		file.dataset.id = info.id;
		file.dataset.type = info.type;
		file.dataset.enabled = info.enabled;
		file.dataset.name = info.name;
		file.dataset.links = info.links ? file.dataset.links = info.links.map(url => {
			try{
				return (new URL(url)).hostname;
			}catch(exc){
				return "";
			}
		}).join(" ") : "";
	}
	setDataset();

	let fileName = file.querySelector(".file-name");
	let fileType = file.querySelector(".file-type");
	let fileEnable = file.querySelector("input");
	fileEnable.addEventListener("change", function(){
		info.enabled = this.checked;
		fileObject.save();
	});
	let fileEdit = file.querySelector(".file-icon.file-edit");
	fileEdit.addEventListener("click", edit);
	let fileDelete = file.querySelector(".file-icon.file-delete");
	fileDelete.addEventListener("click", function(){
		if(fileDelete.classList.contains("icon-confirm")){
			File.remove(info.id).then(function(){
				file.remove();
			});
		}else{
			fileDelete.classList.add("icon-confirm");
			setTimeout(function(){
				fileDelete.classList.remove("icon-confirm");
			}, 1000);
		}
	});
	file.addEventListener("click", e => {
		if(e.target.className=="file") edit();
	});
	element.appendChild(file);

	fileObject.onChange = function(info){
		fileEnable.checked = info.enabled;
		fileName.textContent = info.name;
		setDataset();
	}

	function edit(){
		chrome.tabs.create({url: chrome.runtime.getURL("editor.html#"+info.id)});
	}
}

let filesElement = document.getElementById("files");
File.loadAll().then(function(files){
	files = files.sort((a, b) => {
		if(a.info.name < b.info.name) return -1;
		if(a.info.name > b.info.name) return 1;
		return 0;
	});
	for(let i=0;i<files.length;i++){
		createFileEntry(files[i], filesElement);
	}
	updateSearchBarResults(searchBar.value);
});

let newFileJS = document.getElementById("new-js");
newFileJS.addEventListener("click", () => {
	let f = new File();
	f.changeInfo({type: "JS", name: "New Script"});
	f.save().then(() => {
		createFileEntry(f, filesElement);
	});
});

let newFileCSS = document.getElementById("new-css");
newFileCSS.addEventListener("click", () => {
	let f = new File();
	f.changeInfo({type: "CSS", name: "New Stylesheet"});
	f.save().then(() => {
		createFileEntry(f, filesElement);
	});
});

/* file input */
function newFromFile(inFile) {
	let info = {};

	if(inFile.type == "text/javascript") {
		info.type = "JS";
		info.name = inFile.name.match(/(.*)\..*$/);
	} else if(inFile.type == "text/css") {
		info.type = "CSS";
		info.name = inFile.name.match(/(.*)\..*$/);
	} else if(inFile.type == "application/json") {
	} else {
		alert("Unsupported file type");
		return;
	}

	let reader = new FileReader();
	reader.addEventListener("load", () => {
		if(inFile.type == "application/json") {
			try {
				info = JSON.parse(reader.result);
			} catch(e) { alert("The uploaded json file is not valid"); }
		} else {
			info.content = reader.result;
		}

		let f = new File();
		f.changeInfo(info);
		f.save().then(() => {
			createFileEntry(f, filesElement);
		});
	});
	reader.readAsText(inFile);
}

document.body.addEventListener("dragover", (e) => {
	e.preventDefault();
	e.stopPropagation();
	document.body.classList.add("drag-over");
});
document.body.addEventListener("dragleave", (e) => {
	e.preventDefault();
	e.stopPropagation();
	document.body.classList.remove("drag-over");
});
document.body.addEventListener("drop", (e) => {
	e.preventDefault();
	e.stopPropagation();
	document.body.classList.remove("drag-over");
	newFromFile(e.dataTransfer.files[0]);
});

let inputFile = document.createElement("input");
inputFile.type = "file";
inputFile.addEventListener("change", () => {
	newFromFile(inputFile.files[0]);
});

let newFileUp = document.getElementById("new-up");
newFileUp.addEventListener("click", () => { inputFile.click(); });

const resultNumberSpan = document.querySelector("#result-number");
function updateSearchBarResults(query){
	let q = query.toLowerCase();
	let siteFilters = [];
	let typeFilters = [];
	function parseTag(regex){
		const match = q.match(regex);
		if(match){
			q = q.replace(regex, "").trim();
			return match;
		}
		return [];
	}
	do{
		var siteFilter = parseTag(/\B@((\w+\.)*\w+\.\w+)\b/g).pop();
		if(siteFilter)
			siteFilters.push(siteFilter.slice(1));
		var typeFilter = parseTag(/\B:(JS|CSS)\b/i).pop();
		if(typeFilter)
			typeFilters.push(typeFilter);
	} while(siteFilter || typeFilter);

	fileLoop: for(file of filesElement.querySelectorAll(".file")){
		file.classList.remove("filtered");
		if(query.length > 0){
			const links = file.dataset.links.toLowerCase();
			const type = file.dataset.type.toLowerCase();
			for(siteFilter of siteFilters){
				if(!links.includes(siteFilter)){
					file.classList.add("filtered");
					continue fileLoop;
				}
			}
			for(typeFilter of typeFilters){
				if(type !== typeFilter){
					file.classList.add("filtered");
					continue fileLoop;
				}
			}
			if(!file.dataset.name.toLowerCase().includes(q))
				file.classList.add("filtered");
		}
	}
	const nHidden = filesElement.querySelectorAll(".file.filtered").length;
	const nVisible = filesElement.querySelectorAll(".file:not(.filtered)").length;
	if(nVisible == 0 && nHidden == 0)
		resultNumberSpan.innerText = "Nothing here ¯\\_(ツ)_/¯";
	else if(nHidden > 0)
		resultNumberSpan.innerText = `( ${nHidden} filtered )`;
	else
		resultNumberSpan.innerText = "";
}

const searchBar = document.querySelector("#search-bar");
searchBar.addEventListener("input", ev => updateSearchBarResults(searchBar.value));
chrome.storage.onChanged.addListener(() => updateSearchBarResults(searchBar.value));