<?php

declare(strict_types=1);

namespace Intervention\Image\Tests\Unit\Typography;

use Generator;
use Intervention\Image\Geometry\Point;
use Intervention\Image\Tests\BaseTestCase;
use Intervention\Image\Typography\Line;
use PHPUnit\Framework\Attributes\CoversClass;
use PHPUnit\Framework\Attributes\DataProvider;

#[CoversClass(Line::class)]
final class LineTest extends BaseTestCase
{
    public function testConstructor(): void
    {
        $line = new Line('foo');
        $this->assertInstanceOf(Line::class, $line);
    }

    #[DataProvider('toStringDataProvider')]
    public function testToString(string $text, int $words): void
    {
        $line = new Line($text);
        $this->assertEquals($words, $line->count());
        $this->assertEquals($text, (string) $line);
    }

    public function testSetGetPosition(): void
    {
        $line = new Line('foo');
        $this->assertEquals(0, $line->position()->x());
        $this->assertEquals(0, $line->position()->y());

        $line->setPosition(new Point(10, 11));
        $this->assertEquals(10, $line->position()->x());
        $this->assertEquals(11, $line->position()->y());
    }

    public function testCount(): void
    {
        $line = new Line();
        $this->assertEquals(0, $line->count());

        $line = new Line("foo");
        $this->assertEquals(1, $line->count());

        $line = new Line("foo bar");
        $this->assertEquals(2, $line->count());
    }

    public function testLength(): void
    {
        $line = new Line();
        $this->assertEquals(0, $line->length());

        $line = new Line("foo");
        $this->assertEquals(3, $line->length());

        $line = new Line("foo bar.");
        $this->assertEquals(8, $line->length());

        $line = new Line("🫷🙂🫸");
        $this->assertEquals(3, $line->length());
    }

    public function testAdd(): void
    {
        $line = new Line();
        $this->assertEquals(0, $line->count());

        $result = $line->add('foo');
        $this->assertEquals(1, $line->count());
        $this->assertEquals(1, $result->count());

        $result = $line->add('bar');
        $this->assertEquals(2, $line->count());
        $this->assertEquals(2, $result->count());
    }

    public static function toStringDataProvider(): Generator
    {
        yield ['foo', 1];
        yield ['foo bar', 2];
        yield ['测试', 2]; // CJK Unified Ideographs
        yield ['テスト', 3]; // japanese
        yield ['ทดสอบ', 5]; // thai
        yield ['这只是我写的一个测试。', 11]; // CJK Unified Ideographs
    }
}