import IAppender from './IAppender';
import {LoggingLevel} from '../LoggingLevel';
import assertUnreachable from '../../../lang/assertUnreachable';

export class ConsoleAppender implements IAppender {
  append(timestamp: string, level: LoggingLevel, category: string, message: string): void {
    switch (level) {
      case LoggingLevel.Debug:
      case LoggingLevel.Info:
      case LoggingLevel.Warning:
      case LoggingLevel.Trace:
        console.info(`${timestamp} [${category}] ${message}`);
        break;

      case LoggingLevel.Error:
        console.error(`${timestamp} [${category}] ${message}`);
        break;

      case LoggingLevel.Fatal:
        console.error(`${timestamp} [${category}] ${message}`);
        break;

      case LoggingLevel.Off:
      case LoggingLevel.All:
        break;

      default:
        assertUnreachable(level);
    }
  }
}