<?php

declare(strict_types=1);

namespace App\Tests\Service\Assignment;

use App\Service\Assignment\PickupDepartureOrder;
use PHPUnit\Framework\TestCase;

/**
 * The fixtures here are real destination rows, because the shapes that make this hard are
 * not ones anyone would invent: BusProNet mixes dated and bare times in the same row, and
 * the departures run across midnight.
 */
class PickupDepartureOrderTest extends TestCase
{
    public function testBareClockTimesFollowTheDatedEveningDepartures(): void
    {
        // destination PMVUS/090324, in its stored order
        $sorted = PickupDepartureOrder::sort([
            self::pickup(1, 'Hannover', '08.03.2024 20:45:00'),
            self::pickup(2, 'Kassel', '00:30'),
            self::pickup(3, 'Basel', '04:15'),
            self::pickup(4, 'Karlsruhe', '02:45'),
            self::pickup(5, 'Göttingen', '08.03.2024 22:00:00'),
            self::pickup(6, 'Frankfurt', '01:30'),
            self::pickup(7, 'Mannheim', '08.03.2024 23:30:00'),
        ]);

        $this->assertSame(
            ['Hannover', 'Göttingen', 'Mannheim', 'Kassel', 'Frankfurt', 'Karlsruhe', 'Basel'],
            array_column($sorted, 'city'),
        );
    }

    public function testADatedDepartureAfterMidnightKeepsItsOwnDay(): void
    {
        // destination DKIWE/110425: 03:15 carries the next day's date itself, so it must not
        // be pulled back in front of the evening departures
        $sorted = PickupDepartureOrder::sort([
            self::pickup(1, 'Kiel', '02:15'),
            self::pickup(2, 'Hamburg', '10.04.2025 23:59:00'),
            self::pickup(3, 'Flensburg', '10.04.2025 21:30:00'),
            self::pickup(4, 'Lübeck', '10.04.2025 23:00:00'),
            self::pickup(5, 'Bremen', '11.04.2025 03:15:00'),
            self::pickup(6, 'Rostock', '01:00'),
            self::pickup(7, 'Schwerin', '04:15'),
        ]);

        $this->assertSame(
            ['Flensburg', 'Lübeck', 'Hamburg', 'Rostock', 'Kiel', 'Bremen', 'Schwerin'],
            array_column($sorted, 'city'),
        );
    }

    public function testWithoutAnyDatedEntryTheClockAloneOrders(): void
    {
        $sorted = PickupDepartureOrder::sort([
            self::pickup(1, 'Ulm', '07:30'),
            self::pickup(2, 'Augsburg', '05:15'),
            self::pickup(3, 'München', '09:00'),
        ]);

        $this->assertSame(['Augsburg', 'Ulm', 'München'], array_column($sorted, 'city'));
    }

    public function testAResolvedDatetimeWinsOverTheStoredTime(): void
    {
        // what MyE&P's travel export delivers: time for display, datetime for ordering
        $sorted = PickupDepartureOrder::sort([
            [...self::pickup(1, 'Kassel', '00:30'), 'datetime' => '2024-03-09T00:30:00+01:00'],
            [...self::pickup(2, 'Hannover', '20:45'), 'datetime' => '2024-03-08T20:45:00+01:00'],
        ]);

        $this->assertSame(['Hannover', 'Kassel'], array_column($sorted, 'city'));
    }

    public function testEntriesWithoutAReadableTimeGoLastInTheirStoredOrder(): void
    {
        $sorted = PickupDepartureOrder::sort([
            self::pickup(1, 'Ohne Zeit', ''),
            self::pickup(2, 'Nur Datum', '16.02.2024'),
            self::pickup(3, 'Bremen', '22:00'),
            self::pickup(4, 'Gar nichts', null),
        ]);

        $this->assertSame(
            ['Bremen', 'Ohne Zeit', 'Nur Datum', 'Gar nichts'],
            array_column($sorted, 'city'),
        );
    }

    public function testTheClockReadsBothStoredTimeShapes(): void
    {
        $this->assertSame('20:45', PickupDepartureOrder::clock(self::pickup(1, 'Hannover', '08.03.2024 20:45:00')));
        $this->assertSame('02:15', PickupDepartureOrder::clock(self::pickup(2, 'Kassel', '02:15')));
    }

    public function testTheClockIsNullWhenNoTimeCanBeRead(): void
    {
        $this->assertNull(PickupDepartureOrder::clock(self::pickup(1, 'Nur Datum', '16.02.2024')));
        $this->assertNull(PickupDepartureOrder::clock(self::pickup(2, 'Ohne Zeit', '')));
        $this->assertNull(PickupDepartureOrder::clock(self::pickup(3, 'Gar nichts', null)));
    }

    public function testTheClockPrefersAResolvedDatetime(): void
    {
        $pickup = [...self::pickup(1, 'Hannover', '08.03.2024 20:45:00'), 'datetime' => '2024-03-08T20:45:00+01:00'];

        $this->assertSame('20:45', PickupDepartureOrder::clock($pickup));
    }

    public function testAnEmptyListStaysEmpty(): void
    {
        $this->assertSame([], PickupDepartureOrder::sort([]));
    }

    public function testTheStoredEntriesArePassedThroughUntouched(): void
    {
        $pickups = [self::pickup(7, 'Bremen', '22:00')];

        $this->assertSame($pickups, PickupDepartureOrder::sort($pickups));
    }

    /**
     * @return array<string, mixed>
     */
    private static function pickup(int $busProId, string $city, ?string $time): array
    {
        return [
            'busProId' => $busProId,
            'city' => $city,
            'street' => 'Irgendwo 1',
            'time' => $time,
        ];
    }
}