import { Server } from 'oc-server';

const userDatabase = [
  { name: 'John Doe', born: 1986, hobbies: ['Swimming', 'Basketball'] },
  { name: 'Jane Doe', born: 1991, hobbies: ['Running', 'Rugby'] },
];

const yearsFunFactDatabase: Record<number, string> = {
  1986: "Halley's Comet made its closest approach to Earth in 1986, visible to the naked eye.",
  1987: 'The first Final Fantasy game was released in 1987.',
  1991: 'The first web page was created in 1991 by Tim Berners-Lee.',
};

async function getUser(userId: number) {
  return userDatabase[userId];
}

async function getFunFact(year: number) {
  return yearsFunFactDatabase[year];
}

export const server = new Server({
  development: {
    // Echo console logs from the browser to the server
    console: true,
  },
})
  .withParameters({
    userId: {
      default: 1,
      description: 'The user id from the user database',
      example: 1,
      mandatory: true,
      type: 'number',
    },
  })
  .handler(async (params) => {
    const { userId } = params;
    const user = await getUser(userId);
    const [firstName, lastName] = user.name.split(/\s+/);

    if (firstName === 'Invalid') {
      return;
    }

    return {
      firstName,
      lastName,
      born: user.born,
      hobbies: user.hobbies,
    };
  })
  .action('funFact', async (params: { year: number }) => {
    const { year } = params;
    const funFact = await getFunFact(year);

    return {
      funFact,
    };
  });

declare module 'oc-server' {
  interface Register {
    server: typeof server;
  }
}