const faker = require('faker');

const capacities = {
  high: faker.random.number({ min: 400, max: 600 }),
  low: faker.random.number({ min: 125, max: 250 }),
};

const dates = {
  near: faker.date.future(faker.random.number({ min: 0.125, max: 0.75 })),
  past: faker.date.recent(faker.random.number({ min: 3, max: 16 })),
}

const getPosts = (number = 3) => {
  let posts = [];
  for (let i = 0; i < number; i++) {
    const date = faker.date.recent(faker.random.number({ min: 3, max: 16 }));
    const scheduledPost = faker.random.boolean();

    posts.push({
      author: faker.name.findName(),
      title: faker.lorem.sentence(),
      content: faker.lorem.paragraphs(faker.random.number({ min: 3, max: 5 })),
      isPublic: faker.random.boolean(),
      scheduledPost: scheduledPost,
      sendNotification: scheduledPost ? faker.date.future(faker.random.number({ min: 0.125, max: 0.25 })) : null,
      timestamp: date,
    });
  }

  return posts;
};

const getTickets = (ticketItems = []) => {
  let tickets = [];

  if (ticketItems !== false) {
    const count = typeof ticketItems === 'array' ? ticketItems.length :
      faker.random.number({ min: 1, max: 5 });

    for (let i = 0; i < count; i++) {
      const ticketItem = ticketItems[i] || {};
      const {
        capacity = capacities[faker.random.arrayElement(['high', 'low'])],
        itemId = faker.random.uuid(),
        name = faker.lorem.sentence(),
        price = faker.random.number({ min: 50, max: 450 }),
      } = ticketItem;

      tickets.push({
        available: (capacity -
          faker.random.number({ min: Math.floor(capacity / 2), max: (capacity - 50) })),
        capacity,
        endSale: dates.near,
        itemId,
        name,
        price,
        startSale: dates.past,
      });
    }
  }

  return tickets;
}

const getEvent = (isTicketed = true) => ({
  description: faker.lorem.sentences(faker.random.number({ min: 3, max: 5 }), '. '),
  endTime: dates.near,
  images: [
    { url: faker.image.imageUrl(640, 480, 'cats', true, true) },
    { url: faker.image.imageUrl(640, 480, 'cats', true, true) },
    { url: faker.image.imageUrl(640, 480, 'cats', true, true) },
  ],
  isTicketed: isTicketed,
  posts: getPosts(faker.random.number({ min: 4, max: 12 })),
  requireLoginToSeeAuction: false,
  showFrom: dates.past - (14*24*60*60*1000),
  showUntil: dates.near + (14*24*60*60*1000),
  startTime: dates.past,
  tagline: faker.lorem.sentence(),
  ticketClasses: getTickets(isTicketed),
  title: faker.lorem.words(faker.random.number({ min: 1, max: 4 })),
  url: 'https://www.mfa.org/summer-party',
});

module.exports = {
  getEvent,
  getPosts,
  getTickets,
};