Init from Manwell

js/file.js

@@ -0,0 +1,94 @@
+function File(id){
+	let _this = this;
+	if(!id) id = File.uuid();
+	let info = this.info = {id, enabled:true};
+	
+	this.changeInfo = function(i){
+		for(let _i in i){
+			info[_i] = i[_i];
+		}
+	};
+	
+	this.save = function(){
+		return new Promise(function(succ, err){
+			Storage.save({[File.PREFIX+info.id]:info}).then(_ => {
+				File.saveIndex(info.id, info.enabled).then(succ);
+			});
+		});
+	};
+	
+	this.onChange = function(info){}; //Placeholder function
+	Storage.onChange(File.PREFIX+id, newInfo => {
+		_this.changeInfo(newInfo);
+		_this.onChange(newInfo);
+	});
+}
+File.PREFIX = "FILE-";
+File.saveIndex = function(id, enabled){
+	return new Promise((succ, err) => {
+		File.loadIndex().then((index) => {
+			index[id] = enabled;
+			Storage.save({"INDEX":index}).then(succ);
+		});
+	});
+};
+File.loadIndex = function(){
+	return new Promise((succ, err) => {
+		Storage.load(["INDEX"]).then((result) => {
+			let index = result["INDEX"] || {};
+			succ(index);
+		});
+	});
+};
+File.uuid = function(){
+	return ([1e7]+-1e3+-4e3+-8e3+-1e11).replace(/[018]/g, c => 
+		(c ^ crypto.getRandomValues(new Uint8Array(1))[0] & 15 >> c / 4).toString(16)
+	)
+};
+File.remove = function(id){
+	return new Promise((succ, err) => {
+		File.loadIndex().then((index) => {
+			delete index[id];
+			Storage.save({"INDEX":index}).then(_ => {
+				Storage.remove([File.PREFIX+id]).then(succ);
+			});
+		});
+	});
+};
+File.load = function(id){
+	return new Promise((succ, err) => {
+		let innerID = File.PREFIX+id;
+		Storage.load([innerID]).then(result => {
+			if(!result[innerID]) err();
+			let file = new File(id);
+			file.changeInfo(result[innerID]);
+			succ(file);
+		});
+	});
+};
+File.loadAll = function(){
+	return new Promise((succ, err) => {
+		let files = [];
+		File.loadIndex().then((index) => {
+			for(let id in index){
+				files.push(File.load(id));
+			}
+			Promise.all(files).then((files) => {
+				succ(files);
+			});
+		});
+	});
+};
+File.loadEnabled = function(){
+	return new Promise((succ, err) => {
+		let files = [];
+		File.loadIndex().then((index) => {
+			for(let id in index){
+				if(index[id]) files.push(File.load(id));
+			}
+			Promise.all(files).then((files) => {
+				succ(files);
+			})
+		});
+	});
+};