logger-util: code refactoring and better logs design.

This imporves logging and refactors most of the code.
This also renames console-util to logger-util.

app/renderer/js/utils/logger-util.js

@@ -0,0 +1,87 @@
+const NodeConsole = require('console').Console;
+const fs = require('fs');
+const isDev = require('electron-is-dev');
+const { initSetUp } = require('./default-util');
+
+initSetUp();
+let app = null;
+if (process.type === 'renderer') {
+	app = require('electron').remote.app;
+} else {
+	app = require('electron').app;
+}
+
+const browserConsole = console;
+const logDir = `${app.getPath('userData')}/Logs`;
+
+class Logger {
+	constructor(opts = {}) {
+		let {
+			timestamp = true,
+			file = 'console.log',
+			level = true,
+			logInDevMode = false
+		} = opts;
+
+		file = `${logDir}/${file}`;
+		if (timestamp === true) {
+			timestamp = this.getTimestamp;
+		}
+
+		const fileStream = fs.createWriteStream(file, { flags: 'a' });
+		const nodeConsole = new NodeConsole(fileStream);
+
+		this.nodeConsole = nodeConsole;
+		this.timestamp = timestamp;
+		this.level = level;
+		this.logInDevMode = logInDevMode;
+		this.setUpConsole();
+	}
+
+	_log(type, ...args) {
+		const {
+			nodeConsole, timestamp, level, logInDevMode
+		} = this;
+		let nodeConsoleLog;
+
+		/* eslint-disable no-fallthrough */
+		switch (true) {
+			case typeof timestamp === 'function':
+				args.unshift(timestamp() + ' |\t');
+
+			case (level !== false):
+				args.unshift(type.toUpperCase() + ' |');
+
+			case isDev || logInDevMode:
+				nodeConsoleLog = nodeConsole[type] || nodeConsole.log;
+				nodeConsoleLog.apply(null, args);
+
+			default: break;
+		}
+		/* eslint-enable no-fallthrough */
+
+		browserConsole[type].apply(null, args);
+	}
+
+	setUpConsole() {
+		for (const type in browserConsole) {
+			this.setupConsoleMethod(type);
+		}
+	}
+
+	setupConsoleMethod(type) {
+		this[type] = (...args) => {
+			this._log(type, ...args);
+		};
+	}
+
+	getTimestamp() {
+		const date = new Date();
+		const timestamp =
+			`${date.getMonth()}/${date.getDate()} ` +
+			`${date.getMinutes()}:${date.getSeconds()}`;
+		return timestamp;
+	}
+}
+
+module.exports = Logger;