Utility functions for grouping arrays of showtimes by different criteria. These functions use the reduce() pattern to organize showtime data into structured objects.
groupShowtimesByDate
Groups an array of showtimes by their date, organizing them into a dictionary keyed by ISO date strings.
groupShowtimesByDate(showtimes: any[]): Record<string, any[]>
Array of showtime objects. Each showtime must have a start_time property containing an ISO 8601 datetime string.
Object where keys are ISO date strings (“yyyy-MM-dd”) and values are arrays of showtimes for that date
date-fns functions parseISO() and format() with pattern 'yyyy-MM-dd' to extract the date key from each showtime’s start_time
import { groupShowtimesByDate } from '@/lib/utils';
const showtimes = [
{ id: 1, start_time: '2024-03-15T19:30:00', movie: { title: 'Dune' } },
{ id: 2, start_time: '2024-03-15T21:00:00', movie: { title: 'Oppenheimer' } },
{ id: 3, start_time: '2024-03-16T18:00:00', movie: { title: 'Dune' } },
];
const grouped = groupShowtimesByDate(showtimes);
console.log(grouped);
// {
// '2024-03-15': [
// { id: 1, start_time: '2024-03-15T19:30:00', ... },
// { id: 2, start_time: '2024-03-15T21:00:00', ... }
// ],
// '2024-03-16': [
// { id: 3, start_time: '2024-03-16T18:00:00', ... }
// ]
// }
groupShowtimesByCinema
Groups an array of showtimes by cinema, organizing them into a dictionary where each entry contains cinema details and associated showtimes.
groupShowtimesByCinema(showtimes: any[]): Record<string, any>
Array of showtime objects. Each showtime must have a cinema property with an id field.
Object where keys are cinema IDs and values are objects containing:
cinema: The cinema object from the first showtime with that cinema IDshowtimes: Array of all showtimes for that cinema
import { groupShowtimesByCinema } from '@/lib/utils';
const showtimes = [
{
id: 1,
start_time: '2024-03-15T19:30:00',
cinema: { id: 'cinema-1', name: 'AMC Downtown' },
movie: { title: 'Dune' }
},
{
id: 2,
start_time: '2024-03-15T21:00:00',
cinema: { id: 'cinema-1', name: 'AMC Downtown' },
movie: { title: 'Oppenheimer' }
},
{
id: 3,
start_time: '2024-03-15T20:00:00',
cinema: { id: 'cinema-2', name: 'Regal Plaza' },
movie: { title: 'Dune' }
},
];
const grouped = groupShowtimesByCinema(showtimes);
console.log(grouped);
// {
// 'cinema-1': {
// cinema: { id: 'cinema-1', name: 'AMC Downtown' },
// showtimes: [
// { id: 1, start_time: '2024-03-15T19:30:00', ... },
// { id: 2, start_time: '2024-03-15T21:00:00', ... }
// ]
// },
// 'cinema-2': {
// cinema: { id: 'cinema-2', name: 'Regal Plaza' },
// showtimes: [
// { id: 3, start_time: '2024-03-15T20:00:00', ... }
// ]
// }
// }
groupShowtimesByMovie
Groups an array of showtimes by movie, organizing them into a dictionary where each entry contains movie details and associated showtimes.
groupShowtimesByMovie(showtimes: any[]): Record<string, any>
Array of showtime objects. Each showtime must have a movie property with an id field.
Object where keys are movie IDs and values are objects containing:
movie: The movie object from the first showtime with that movie IDshowtimes: Array of all showtimes for that movie
import { groupShowtimesByMovie } from '@/lib/utils';
const showtimes = [
{
id: 1,
start_time: '2024-03-15T19:30:00',
cinema: { name: 'AMC Downtown' },
movie: { id: 'movie-1', title: 'Dune' }
},
{
id: 2,
start_time: '2024-03-15T21:00:00',
cinema: { name: 'AMC Downtown' },
movie: { id: 'movie-2', title: 'Oppenheimer' }
},
{
id: 3,
start_time: '2024-03-15T20:00:00',
cinema: { name: 'Regal Plaza' },
movie: { id: 'movie-1', title: 'Dune' }
},
];
const grouped = groupShowtimesByMovie(showtimes);
console.log(grouped);
// {
// 'movie-1': {
// movie: { id: 'movie-1', title: 'Dune' },
// showtimes: [
// { id: 1, start_time: '2024-03-15T19:30:00', ... },
// { id: 3, start_time: '2024-03-15T20:00:00', ... }
// ]
// },
// 'movie-2': {
// movie: { id: 'movie-2', title: 'Oppenheimer' },
// showtimes: [
// { id: 2, start_time: '2024-03-15T21:00:00', ... }
// ]
// }
// }