PrettyLog

prettyLog.ts

export enum LogLevelName {
  Info = 'info',
  Warn = 'warn',
  Error = 'error',
  Method = 'method',
  All = 'all',
  None = 'none',
}

export enum LogLevelStyle {
  Info = 'background:#215ace ; padding: 2px; border-radius: 2px;  color: #fff;',
  Warn = 'background:#e8c82c ; padding: 2px; border-radius: 2px;  color: #000;',
  Error = 'background:#c92112 ; padding: 2px; border-radius: 2px;  color: #fff;',
  Method = 'background:#6d0cb2 ; padding: 2px; border-radius: 2px;  color: #fff;',
}

const detectNode:
  boolean = Object.prototype.toString.call(typeof process !== 'undefined' ? process : 0) === '[object process]';

/**
 * Abstract class to be used for log
 */

const log: (
  name: string,
  style: string,
  className: string,
  classStyle: string,
  message: any | any[],
) => void = (
  name: string,
  style: string,
  className: string,
  classStyle: string,
  message: any | any[],
): void => {
  if (detectNode) {
    // tslint:disable-next-line:no-console
    console.log(`${ className }[${ name }]: ${ Array.isArray(message) ? message.join(' | ') : message }`);
  } else {
    // tslint:disable-next-line:no-console
    console.log(`%c ${ name } %c ${ className } %c ${
      Array.isArray(message) ? message.join(' | ') : message
      }`, style, classStyle, 'background: transparent;');
  }
};

const logError: (
  name: string,
  style: string,
  className: string,
  classStyle: string,
  message: string | Error,
) => void = (
  name: string,
  style: string,
  className: string,
  classStyle: string,
  message: string | Error,
): void => {
  if (detectNode) {
    // tslint:disable-next-line:no-console
    console.error(`${ className }[${ name }]: `, message);
  } else {
    // tslint:disable-next-line:no-console
    console.error(`%c ${ name } %c ${ className } %c ${ message }`, style, classStyle, 'background: transparent;');
  }
};

/**
 * Abstract LogManager Class
 */
export abstract class PrettyLog {
  /**
   * Class name for using with the log
   */
  protected className: string = 'PrettyLog';
  /**
   * Log style to be used when the log is called
   */
  protected logStyle: string = 'background:#44AB53 ; padding: 2px; border-radius: 2px;  color: #fff;';
  /**
   * Show the logs on the console
   */
  protected showLogs: LogLevelName = LogLevelName.None;

  protected get verboseMode(): boolean {
    return this.showLogs === LogLevelName.Info || this.showLogs === LogLevelName.All;
  }

  /**
   * Log an info event
   */
  protected logError(error: Error | string): void {
    if (this.showLogs === LogLevelName.Error || this.showLogs === LogLevelName.All) {
      if (error instanceof Error && error.message) {
        logError(
          LogLevelName.Error,
          LogLevelStyle.Error,
          this.className,
          this.logStyle,
          error.message,
        );
      }
      logError(
        LogLevelName.Error,
        LogLevelStyle.Error,
        this.className,
        this.logStyle,
        Error(`${ typeof error === 'object' ? JSON.stringify(error) : error }`),
      );
    }
  }

  /**
   * Log an info event
   */
  protected logInfo(...message: any | any[]): void {
    if (
      this.showLogs === LogLevelName.Info
      || this.showLogs === LogLevelName.All
    ) {
      log(
        LogLevelName.Info,
        LogLevelStyle.Info,
        this.className,
        this.logStyle,
        message,
      );
    }
  }

  /**
   * Log an method call
   */
  protected logMethod(method: string, args?: string, ...params: any[]): void {
    if (
      this.showLogs === LogLevelName.Method
      || this.showLogs === LogLevelName.All
    ) {
      log(
        LogLevelName.Method,
        LogLevelStyle.Method,
        this.className,
        this.logStyle,
        `Call Method: ${ method }(${ args ? args : '' }) ${ (params) ? `=> ${ JSON.stringify(params) }` : '' }`,
      );
    }
  }

  /**
   * Log an info event
   */
  protected logWarn(...warn: any | any[]): void {
    if (this.showLogs === LogLevelName.Warn
      || this.showLogs === LogLevelName.All
    ) {
      log(
        LogLevelName.Warn,
        LogLevelStyle.Warn,
        this.className,
        this.logStyle,
        warn,
      );
    }
  }
}