react-query/examples/react/react-native/src/lib/api.ts

import movies from '../data/movies.json'

export type Movie = {
  title: string
  year: number
}

export type MovieDetails = Movie & {
  info: {
    plot: string
    actors: string[]
  }
}

function delay(t: number) {
  return new Promise(function (resolve) {
    setTimeout(resolve, t)
  })
}

export async function fetchMovies(): Promise<Movie[]> {
  console.log('fetchMovies')

  await delay(200 + Math.floor(Math.random() * 2000))

  return Promise.resolve(
    movies
      .slice(0, 100)
      .map((movie) => ({ title: movie.title, year: movie.year })),
  )
}

export async function fetchMovie(title: string): Promise<MovieDetails> {
  console.log('fetchMovie', title)

  await delay(200 + Math.floor(Math.random() * 2000))

  const result = movies.filter((item) => item.title === title)

  if (result.length === 0) {
    throw new Error('Movie not found')
  }
  return Promise.resolve(result[0] as MovieDetails)
}