import dateFmt from 'dateformat';
import util from 'util';

export class Logger {
  public timestamp = 'dd/mm/yy HH:MM:ss';

  constructor() {}

  private write(ltype: string, ...data: any[]): void {
    const message = [];
    let cfunc = console.log;

    if (this.timestamp) {
      message.push(`[${dateFmt(new Date(), this.timestamp)}]`);
    }

    switch (ltype) {
      case 'info':
        message.push('[ INFO]');
        break;
      case 'error':
        message.push('[ERROR]');
        cfunc = console.error;
        break;
      case 'warn':
        message.push('[ WARN]');
        cfunc = console.warn;
        break;
      case 'debug':
        message.push('[DEBUG]');
        break;
    }

    // Short dance to apply formatting
    let final = data[0];
    if (data.length > 1) {
      const fargs = data.slice(1);
      final = util.format(data[0], ...fargs);
    }
    message.push(final);
    cfunc.apply(null, message);
  }

  public log(...data: any[]): void {
    this.write('info', ...data);
  }

  public warn(...data: any[]): void {
    this.write('warn', ...data);
  }

  public info(...data: any[]): void {
    this.write('info', ...data);
  }

  public error(...data: any[]): void {
    this.write('error', ...data);
  }

  public debug(...data: any[]): void {
    this.write('debug', ...data);
  }
}

const logger = new Logger();

export { logger };