/*---------------------------------------------------------------------------------------------

* Copyright (c) Microsoft Corporation. All rights reserved.

* Licensed under the MIT License. See License.txt in the project root for license information.

*--------------------------------------------------------------------------------------------*/

import { OutputChannel, window } from 'vscode';

import * as is from './is';

import * as nls from 'vscode-nls';

const localize = nls.loadMessageBundle();

export default class Logger {

private _output: OutputChannel;

private get output(): OutputChannel {

if (!this._output) {

this._output = window.createOutputChannel(localize('channelName', 'TypeScript'));

}

return this._output;

}

private data2String(data: any): string {

if (data instanceof Error) {

if (is.string(data.stack)) {

return data.stack;

}

return (data as Error).message;

}

if (is.boolean(data.success) && !data.success && is.string(data.message)) {

return data.message;

}

if (is.string(data)) {

return data;

}

return data.toString();

}

public info(message: string, data?: any): void {

this.logLevel('Info', message, data);

}

public warn(message: string, data?: any): void {

this.logLevel('Warn', message, data);

}

public error(message: string, data?: any): void {

// See https://github.com/Microsoft/TypeScript/issues/10496

if (data && data.message === 'No content available.') {

return;

}

this.logLevel('Error', message, data);

}

public logLevel(level: string, message: string, data?: any): void {

this.output.appendLine(`[${level} - ${(new Date().toLocaleTimeString())}] ${message}`);

if (data) {

this.output.appendLine(this.data2String(data));

}

}

}