export class ArgParser {
  private args: string[];

  constructor(args: string[]) {
    this.args = args;
  }

  public get(key: string) {
    const index = this.args.indexOf(key);
    if (index === -1) return null;
    return this.args[index + 1];
  }

  get flags() {
    return this.args.filter((arg) => arg.startsWith("-"));
  }

  get nonFlags() {
    return this.args.filter((arg) => !arg.startsWith("-"));
  }

  get namedArgs() {
    return this.args.filter((arg) => arg.startsWith("--"));
  }

  get task() {
    return this.nonFlags[0];
  }

  static parse(args: string[]) {
    return new ArgParser(args);
  }
}