import {describe, it, expect} from 'vitest';
import {ZonedDateTime} from '@/';

describe('ZonedDateTime', () => {
  describe('#toString', () => {
    describe('Europe/Berlin', () => {
      it('prints iso string', () => {
        let date = new ZonedDateTime(Date.parse('2024-03-08T08:03:57.265Z'), 'Europe/Berlin');
        expect(date.toString()).toEqual('2024-03-08T09:03:57.265+01:00[Europe/Berlin]');
        expect(date.toString({timeZoneName: 'never'})).toEqual('2024-03-08T09:03:57.265+01:00');
        expect(date.toString({offset: 'never'})).toEqual('2024-03-08T09:03:57.265[Europe/Berlin]');
        expect(date.toString({offset: 'never', timeZoneName: 'never'})).toEqual('2024-03-08T09:03:57.265');
      });
    });

    describe('Australia/Lord_Howe', () => {
      it('prints iso string', () => {
        let date = new ZonedDateTime(Date.UTC(2023, 8, 30, 15, 28, 4, 345), 'Australia/Lord_Howe');
        expect(date.toString()).toEqual('2023-10-01T01:58:04.345+10:30[Australia/Lord_Howe]');
        expect(date.toString({timeZoneName: 'never'})).toEqual('2023-10-01T01:58:04.345+10:30');
        expect(date.toString({offset: 'never'})).toEqual('2023-10-01T01:58:04.345[Australia/Lord_Howe]');
        expect(date.toString({offset: 'never', timeZoneName: 'never'})).toEqual('2023-10-01T01:58:04.345');
      });
    });

    describe('America/New_York', () => {
      it('prints iso string', () => {
        let date = new ZonedDateTime(Date.UTC(2023, 8, 30, 15, 28, 4, 345), 'America/New_York');
        expect(date.toString()).toEqual('2023-09-30T11:28:04.345-04:00[America/New_York]');
        expect(date.toString({timeZoneName: 'never'})).toEqual('2023-09-30T11:28:04.345-04:00');
        expect(date.toString({offset: 'never'})).toEqual('2023-09-30T11:28:04.345[America/New_York]');
        expect(date.toString({offset: 'never', timeZoneName: 'never'})).toEqual('2023-09-30T11:28:04.345');
      });
    });

    describe('Rounding', () => {
      it('changes timezone when rounding', () => {
        let date = new ZonedDateTime(Date.UTC(2024, 9, 27, 0, 59, 4, 345), 'Europe/Berlin');
        expect(date.toString()).toEqual('2024-10-27T02:59:04.345+02:00[Europe/Berlin]');
        expect(date.toString({smallestUnit: 'second', roundingMode: 'ceil'})).toEqual(
          '2024-10-27T02:59:05.000+02:00[Europe/Berlin]',
        );
        expect(date.toString({smallestUnit: 'minute', roundingMode: 'ceil'})).toEqual(
          '2024-10-27T03:00:00.000+01:00[Europe/Berlin]',
        );
      });

      it('prints iso with smallest unit', () => {
        let date = new ZonedDateTime(Date.parse('2024-03-08T08:03:57.265Z'), 'Europe/Berlin');

        expect(date.toString()).toEqual('2024-03-08T09:03:57.265+01:00[Europe/Berlin]');
        expect(date.toString({smallestUnit: 'millisecond'})).toEqual('2024-03-08T09:03:57.265+01:00[Europe/Berlin]');
        expect(date.toString({smallestUnit: 'second'})).toEqual('2024-03-08T09:03:57.000+01:00[Europe/Berlin]');
        expect(date.toString({smallestUnit: 'minute'})).toEqual('2024-03-08T09:03:00.000+01:00[Europe/Berlin]');
      });
    });
  });
});