<?php

declare(strict_types=1);

namespace Tests\Unit\Domain\Contact;

use App\Domain\Contact\BrazilianPhoneNumber;
use PHPUnit\Framework\Attributes\DataProvider;
use Tests\TestCase;

class BrazilianPhoneNumberTest extends TestCase
{
    /**
     * @return iterable<string, array{string, string}>
     */
    public static function normalizableNumbers(): iterable
    {
        yield 'mobile with punctuation' => ['(11) 98888-7777', '(11) 98888-7777'];
        yield 'mobile digits only' => ['11988887777', '(11) 98888-7777'];
        yield 'mobile with spaces and dashes' => ['11 98888 7777', '(11) 98888-7777'];
        yield 'mobile with +55 country code' => ['+55 11 98888-7777', '(11) 98888-7777'];
        yield 'mobile with bare 55 country code' => ['5511988887777', '(11) 98888-7777'];
        yield 'landline digits only' => ['1133334444', '(11) 3333-4444'];
        yield 'landline with punctuation' => ['(11) 3333-4444', '(11) 3333-4444'];
        yield 'padded with surrounding whitespace' => ["  11 98888-7777  \n", '(11) 98888-7777'];
    }

    #[DataProvider('normalizableNumbers')]
    public function test_it_normalizes_recognizable_brazilian_numbers(string $raw, string $expected): void
    {
        $this->assertSame($expected, BrazilianPhoneNumber::normalize($raw));
    }

    /**
     * @return iterable<string, array{string}>
     */
    public static function foreignOrImplausibleNumbers(): iterable
    {
        // 10-digit US number: DDD "20" has a '0' in the second position,
        // which no real Brazilian area code has.
        yield 'us number without country code' => ['2025551234'];

        // 11-digit US number with leading '1': DDD "12" is plausible, but
        // the third digit is '0', not the mandatory mobile '9'.
        yield 'us number with leading 1' => ['12025551234'];

        // 10-digit number with a DDD starting in '0', which cannot occur.
        yield 'ten digits with leading zero ddd' => ['0212345678'];

        // Explicit "+55" leaves only 9 digits behind — a mobile subscriber
        // number with no area code, not DDD 55.
        yield 'explicit country code missing ddd' => ['+55 98888-7777'];
    }

    #[DataProvider('foreignOrImplausibleNumbers')]
    public function test_it_preserves_numbers_that_are_not_plausibly_brazilian(string $raw): void
    {
        $this->assertSame($raw, BrazilianPhoneNumber::normalize($raw));
    }

    public function test_it_still_formats_a_genuine_ddd_55_number(): void
    {
        // DDD 55 (Rio Grande do Sul) is a real area code and must not be
        // confused with the "+55" country code prefix handling above.
        $this->assertSame(
            '(55) 98888-7777',
            BrazilianPhoneNumber::normalize('(55) 98888-7777')
        );
    }

    public function test_it_preserves_unrecognized_shapes_instead_of_discarding_information(): void
    {
        $this->assertSame(
            '+44 20 7946 0958',
            BrazilianPhoneNumber::normalize('  +44 20 7946 0958  ')
        );
    }

    public function test_it_collapses_internal_whitespace_for_unrecognized_shapes(): void
    {
        $this->assertSame(
            'ramal 123',
            BrazilianPhoneNumber::normalize("ramal   123\n")
        );
    }

    public function test_it_preserves_annotations_next_to_a_recognizable_number(): void
    {
        $this->assertSame(
            '11 98888-7777 (WhatsApp)',
            BrazilianPhoneNumber::normalize('11 98888-7777 (WhatsApp)')
        );
    }
}