import { faker } from "@faker-js/faker";

export type Person = {
  firstName: string;
  lastName: string;
  age: number;
  visits: number;
  progress: number;
  status: "Active" | "Inactive";
  department?: string;
  email?: string;
  subRows?: Person[];
};

const range = (len: number) => {
  const arr: number[] = [];
  for (let i = 0; i < len; i++) {
    arr.push(i);
  }
  return arr;
};

const newPerson = (): Person => {
  return {
    firstName: faker.person.firstName(),
    lastName: faker.person.lastName(),
    age: faker.number.int(40),
    visits: faker.number.int(1000),
    progress: faker.number.int(100),
    email: faker.internet.email(),
    department: faker.helpers.shuffle<string>([
      "HR",
      "Engineering",
      "Marketing",
      "Sales",
    ])[0]!,
    status: faker.helpers.shuffle<Person["status"]>(["Active", "Inactive"])[0]!,
  };
};

export function makeData(...lens: number[]) {
  const makeDataLevel = (depth = 0): Person[] => {
    const len = lens[depth]!;
    return range(len).map((): Person => {
      return {
        ...newPerson(),
        subRows: lens[depth + 1] ? makeDataLevel(depth + 1) : undefined,
      };
    });
  };

  return makeDataLevel();
}