<?php
declare(strict_types=1);

use PHPUnit\Framework\TestCase;

require_once __DIR__ . '/../php/markdown.php';

final class UtilsTests extends TestCase {
	public function test_stripIndent() {
		$this->assertSame('', MDUtils::stripIndent(''));
		$this->assertSame('', MDUtils::stripIndent('  '));
		$this->assertSame('foo', MDUtils::stripIndent('foo'));
		$this->assertSame('foo', MDUtils::stripIndent(' foo'));
		$this->assertSame('foo', MDUtils::stripIndent('  foo'));
		$this->assertSame('foo', MDUtils::stripIndent('   foo'));
		$this->assertSame('foo', MDUtils::stripIndent('    foo'));
		$this->assertSame(' foo', MDUtils::stripIndent('     foo'));
		$this->assertSame('foo', MDUtils::stripIndent("\tfoo"));
		$this->assertSame("\tfoo", MDUtils::stripIndent("\t\tfoo"));
		$this->assertSame('foo', MDUtils::stripIndent("\t\tfoo", 2));
		$this->assertSame('foo', MDUtils::stripIndent('      foo', 2));
	}

	public function test_countIndents() {
		$this->assertSame(0, MDUtils::countIndents(''));
		$this->assertSame(1, MDUtils::countIndents('  '));
		$this->assertSame(1, MDUtils::countIndents('    '));
		$this->assertSame(0, MDUtils::countIndents('foo'));
		$this->assertSame(0, MDUtils::countIndents('foo'));
		$this->assertSame(1, MDUtils::countIndents(' foo'));
		$this->assertSame(1, MDUtils::countIndents('  foo'));
		$this->assertSame(1, MDUtils::countIndents('   foo'));
		$this->assertSame(1, MDUtils::countIndents('    foo'));
		$this->assertSame(2, MDUtils::countIndents('     foo'));
		$this->assertSame(1, MDUtils::countIndents("\tfoo"));
		$this->assertSame(2, MDUtils::countIndents("\t\tfoo"));

		$this->assertSame(0, MDUtils::countIndents('', true));
		$this->assertSame(0, MDUtils::countIndents('  ', true));
		$this->assertSame(1, MDUtils::countIndents('    ', true));
		$this->assertSame(0, MDUtils::countIndents('foo', true));
		$this->assertSame(0, MDUtils::countIndents(' foo', true));
		$this->assertSame(0, MDUtils::countIndents('  foo', true));
		$this->assertSame(0, MDUtils::countIndents('   foo', true));
		$this->assertSame(1, MDUtils::countIndents('    foo', true));
		$this->assertSame(1, MDUtils::countIndents('     foo', true));
		$this->assertSame(1, MDUtils::countIndents("\tfoo", true));
		$this->assertSame(2, MDUtils::countIndents("\t\tfoo", true));
	}

	public function test_tokenizeLabel() {
		// Escapes are preserved
		$this->assertSame([ '[foo]', 'foo' ], MDToken::tokenizeLabel('[foo] bar'));
		$this->assertSame([ '[foo\\[]', 'foo\\[' ], MDToken::tokenizeLabel('[foo\\[] bar'));
		$this->assertSame([ '[foo\\]]', 'foo\\]' ], MDToken::tokenizeLabel('[foo\\]] bar'));
		$this->assertSame([ '[foo[]]', 'foo[]' ], MDToken::tokenizeLabel('[foo[]] bar'));
		$this->assertSame([ '[foo\\(]', 'foo\\(' ], MDToken::tokenizeLabel('[foo\\(] bar'));
		$this->assertSame([ '[foo\\)]', 'foo\\)' ], MDToken::tokenizeLabel('[foo\\)] bar'));
		$this->assertSame([ '[foo()]', 'foo()' ], MDToken::tokenizeLabel('[foo()] bar'));

		$this->assertSame(null, MDToken::tokenizeLabel('foo bar'));
		$this->assertSame(null, MDToken::tokenizeLabel('[foo\\] bar'));
		$this->assertSame(null, MDToken::tokenizeLabel('[foo bar'));
		$this->assertSame(null, MDToken::tokenizeLabel('[foo[] bar'));
	}

	public function test_tokenizeURL() {
		$this->assertSame([ '(page.html)', 'page.html', null ], MDToken::tokenizeURL('(page.html) foo'));
		$this->assertSame([ '(page.html "link title")', 'page.html', 'link title' ], MDToken::tokenizeURL('(page.html "link title") foo'));
		$this->assertSame([ '(https://example.com/path/page.html?query=foo&bar=baz#fragment)', 'https://example.com/path/page.html?query=foo&bar=baz#fragment', null ], MDToken::tokenizeURL('(https://example.com/path/page.html?query=foo&bar=baz#fragment) foo'));

		$this->assertSame(null, MDToken::tokenizeURL('page.html foo'));
		$this->assertSame(null, MDToken::tokenizeURL('(page.html foo'));
		$this->assertSame(null, MDToken::tokenizeURL('page.html) foo'));
		$this->assertSame(null, MDToken::tokenizeURL('(page.html "title) foo'));
		$this->assertSame(null, MDToken::tokenizeURL('(page .html) foo'));
		$this->assertSame(null, MDToken::tokenizeURL('(user@example.com) foo'));
		$this->assertSame(null, MDToken::tokenizeURL('(user@example.com "title") foo'));
	}

	public function test_tokenizeEmail() {
		$this->assertSame([ '(user@example.com)', 'user@example.com', null ], MDToken::tokenizeEmail('(user@example.com)'));
		$this->assertSame([ '(user@example.com "link title")', 'user@example.com', 'link title' ], MDToken::tokenizeEmail('(user@example.com "link title")'));

		$this->assertSame(null, MDToken::tokenizeEmail('(https://example.com) foo'));
		$this->assertSame(null, MDToken::tokenizeEmail('(https://example.com "link title") foo'));
		$this->assertSame(null, MDToken::tokenizeEmail('(user@example.com "link title) foo'));
		$this->assertSame(null, MDToken::tokenizeEmail('(user@example.com foo'));
		$this->assertSame(null, MDToken::tokenizeEmail('user@example.com) foo'));
	}
}
?>