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

// Licensed under the MIT License.

import { WriteStream } from 'fs-extra';

import * as util from 'util';

import { Disposable } from 'vscode-jsonrpc';

import { Arguments, ILogging } from './types';

import { getTimeForLogging } from './util';

function formatMessage(level?: string, ...data: Arguments): string {

return level

? `[${level.toUpperCase()} ${getTimeForLogging()}]: ${util.format(...data)}\r\n`

: `${util.format(...data)}\r\n`;

}

export class FileLogger implements ILogging, Disposable {

constructor(private readonly stream: WriteStream) {}

public traceLog(...data: Arguments): void {

this.stream.write(formatMessage(undefined, ...data));

}

public traceError(...data: Arguments): void {

this.stream.write(formatMessage('error', ...data));

}

public traceWarn(...data: Arguments): void {

this.stream.write(formatMessage('warn', ...data));

}

public traceInfo(...data: Arguments): void {

this.stream.write(formatMessage('info', ...data));

}

public traceVerbose(...data: Arguments): void {

this.stream.write(formatMessage('debug', ...data));

}

public dispose(): void {

try {

this.stream.close();

} catch (ex) {

/** do nothing */

}

}

}