<?php

declare(strict_types=1);

namespace Tests\Unit\Infra\Casts;

use Illuminate\Database\Eloquent\Model;
use Infra\Casts\UtcDateTimeCast;

covers(UtcDateTimeCast::class);

describe('UtcDateTimeCast Unit Tests', function (): void {
    it('casts database string to UTC DateTimeImmutable', function (): void {
        // GIVEN
        $cast  = new UtcDateTimeCast();
        $model = new class () extends Model
        {
        };

        // WHEN
        $result = $cast->get($model, 'created_at', '2026-08-21 14:30:00', []);

        // THEN
        expect($result)->toBeInstanceOf(\DateTimeImmutable::class)
            ->and($result?->getTimezone()->getName())->toBe('UTC')
            ->and($result?->format('Y-m-d H:i:s'))->toBe('2026-08-21 14:30:00');
    });

    it('casts non-UTC DateTimeInterface to UTC DateTimeImmutable upon get', function (): void {
        // GIVEN
        $cast        = new UtcDateTimeCast();
        $model       = new class () extends Model
        {
        };
        $parisDate   = new \DateTimeImmutable('2026-08-21 16:30:00', new \DateTimeZone('Europe/Paris'));

        // WHEN
        $result = $cast->get($model, 'created_at', $parisDate, []);

        // THEN
        expect($result)->toBeInstanceOf(\DateTimeImmutable::class)
            ->and($result?->getTimezone()->getName())->toBe('UTC')
            ->and($result?->format('Y-m-d H:i:s'))->toBe('2026-08-21 14:30:00');
    });

    it('handles null and empty string upon get', function (): void {
        // GIVEN
        $cast  = new UtcDateTimeCast();
        $model = new class () extends Model
        {
        };

        // WHEN & THEN
        expect($cast->get($model, 'created_at', null, []))->toBeNull()
            ->and($cast->get($model, 'created_at', '', []))->toBeNull()
            ->and($cast->get($model, 'created_at', '   ', []))->toBeNull();
    });

    it('sets DateTimeInterface to UTC string format for database storage', function (): void {
        // GIVEN
        $cast      = new UtcDateTimeCast();
        $model     = new class () extends Model
        {
        };
        $parisDate = new \DateTimeImmutable('2026-08-21 16:30:00', new \DateTimeZone('Europe/Paris'));

        // WHEN
        $result = $cast->set($model, 'created_at', $parisDate, []);

        // THEN
        expect($result)->toBe('2026-08-21 14:30:00');
    });

    it('sets string date to UTC string format for database storage', function (): void {
        // GIVEN
        $cast  = new UtcDateTimeCast();
        $model = new class () extends Model
        {
        };

        // WHEN
        $result = $cast->set($model, 'created_at', '2026-08-21T16:30:00+02:00', []);

        // THEN
        expect($result)->toBe('2026-08-21 14:30:00');
    });

    it('handles null and empty string upon set', function (): void {
        // GIVEN
        $cast  = new UtcDateTimeCast();
        $model = new class () extends Model
        {
        };

        // WHEN & THEN
        expect($cast->set($model, 'created_at', null, []))->toBeNull()
            ->and($cast->set($model, 'created_at', '', []))->toBeNull()
            ->and($cast->set($model, 'created_at', '   ', []))->toBeNull();
    });

    it('throws InvalidArgumentException when setting unsupported type', function (): void {
        // GIVEN
        $cast  = new UtcDateTimeCast();
        $model = new class () extends Model
        {
        };

        // WHEN & THEN
        expect(fn () => $cast->set($model, 'created_at', 12345, []))
            ->toThrow(\InvalidArgumentException::class, 'Cannot cast value of type int to UTC datetime');
    });
});