<?php
declare(strict_types=1);

use PHPUnit\Framework\TestCase;

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

final class TokenTests extends TestCase {
	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'));
	}

	public function test_findFirstTokens() {
		$tokens = [
			new MDToken('Lorem', MDTokenType::Text),
			new MDToken(' ', MDTokenType::Whitespace),
			new MDToken('_', MDTokenType::Underscore),
			new MDToken('ipsum', MDTokenType::Text),
			new MDToken('_', MDTokenType::Underscore),
			new MDToken(' ', MDTokenType::Whitespace),
			new MDToken('dolor', MDTokenType::Text),
			new MDToken('_', MDTokenType::Underscore),
			new MDToken('sit', MDTokenType::Text),
			new MDToken('_', MDTokenType::Underscore),
		];
		$pattern = [
			MDTokenType::Underscore,
		];
		$actual = MDToken::findFirstTokens($tokens, $pattern);
		$expected = new MDTokenMatch([ $tokens[2] ], 2);
		$this->assertEquals($expected, $actual);
	}

	public function test_findFirstTokens_optionalWhitespace1() {
		$tokens = [
			new MDToken('Lorem', MDTokenType::Text),
			new MDToken(' ', MDTokenType::Whitespace),
			new MDToken('[ipsum]', MDTokenType::Label, 'ipsum'),
			new MDToken('(link.html)', MDTokenType::URL, 'link.html'),
			new MDToken(' ', MDTokenType::Whitespace),
			new MDToken('dolor', MDTokenType::Text),
		];
		$pattern = [
			MDTokenType::Label,
			MDTokenType::META_OptionalWhitespace,
			MDTokenType::URL,
		];
		$actual = MDToken::findFirstTokens($tokens, $pattern);
		$expected = new MDTokenMatch([ $tokens[2], $tokens[3] ], 2);
		$this->assertEquals($expected, $actual);
	}

	public function test_findFirstTokens_optionalWhitespace2() {
		$tokens = [
			new MDToken('Lorem', MDTokenType::Text),
			new MDToken(' ', MDTokenType::Whitespace),
			new MDToken('[ipsum]', MDTokenType::Label, 'ipsum'),
			new MDToken(' ', MDTokenType::Whitespace),
			new MDToken('(link.html)', MDTokenType::URL, 'link.html'),
			new MDToken(' ', MDTokenType::Whitespace),
			new MDToken('dolor', MDTokenType::Text),
		];
		$pattern = [
			MDTokenType::Label,
			MDTokenType::META_OptionalWhitespace,
			MDTokenType::URL,
		];
		$actual = MDToken::findFirstTokens($tokens, $pattern);
		$expected = new MDTokenmatch([ $tokens[2], $tokens[3], $tokens[4] ], 2);
		$this->assertEquals($expected, $actual);
	}

	public function test_findPairedTokens() {
		$tokens = [
			new MDToken('Lorem', MDTokenType::Text),
			new MDToken(' ', MDTokenType::Whitespace),
			new MDToken('_', MDTokenType::Underscore),
			new MDToken('ipsum', MDTokenType::Text),
			new MDToken('_', MDTokenType::Underscore),
			new MDToken(' ', MDTokenType::Whitespace),
			new MDToken('dolor', MDTokenType::Text),
			new MDToken('_', MDTokenType::Underscore),
			new MDToken('sit', MDTokenType::Text),
			new MDToken('_', MDTokenType::Underscore),
		];
		$pattern = [
			MDTokenType::Underscore,
		];
		$actual = MDToken::findPairedTokens($tokens, $pattern, $pattern);
		$expected = new MDPairedTokenMatch(
			[ $tokens[2] ], // startTokens
			[ $tokens[3] ], // contentTokens
			[ $tokens[4] ], // endTokens
			2, // startIndex
			3, // contentIndex
			4, // endIndex
			3 // totalLength
		);
		$this->assertEquals($expected, $actual);
	}
}
?>