/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/

'use strict';

import IRichLanguageConfiguration = monaco.languages.LanguageConfiguration;
import ILanguage = monaco.languages.IMonarchLanguage;

export var conf:IRichLanguageConfiguration = {
	wordPattern: /(-?\d*\.\d\w*)|([^\`\~\!\@\#\%\^\&\*\(\)\-\=\+\[\{\]\}\\\|\;\:\'\"\,\.\<\>\/\?\s]+)/g,

	comments: {
		lineComment: '//',
		blockComment: ['/*', '*/']
	},

	brackets: [
		['{', '}'],
		['[', ']'],
		['(', ')']
	],

	autoClosingPairs: [
		{ open: '{', close: '}', notIn: ['string.php'] },
		{ open: '[', close: ']', notIn: ['string.php'] },
		{ open: '(', close: ')', notIn: ['string.php'] },
		{ open: '"', close: '"', notIn: ['string.php'] },
		{ open: '\'', close: '\'', notIn: ['string.php'] }
	]
};

export const htmlTokenTypes = {
	DELIM_START: 'start.delimiter.tag.html',
	DELIM_END: 'end.delimiter.tag.html',
	DELIM_COMMENT: 'comment.html',
	getTag: (name: string) => {
		return 'tag.html';
	}
};

export var language = <ILanguage> {
	defaultToken: '',
	tokenPostfix: '',
	ignoreCase: true,

	// The main tokenizer for our languages
	tokenizer: {
		root: [
			[/<\?((php)|=)?/, { token: '@rematch', switchTo: '@phpInSimpleState.root' }],
			[/<!DOCTYPE/, 'metatag.html', '@doctype'],
			[/<!--/, 'comment.html', '@comment'],
			[/(<)(\w+)(\/>)/, [htmlTokenTypes.DELIM_START, 'tag.html', htmlTokenTypes.DELIM_END]],
			[/(<)(script)/, [htmlTokenTypes.DELIM_START, { token: 'tag.html', next: '@script'} ]],
			[/(<)(style)/, [htmlTokenTypes.DELIM_START, { token: 'tag.html', next: '@style'} ]],
			[/(<)([:\w]+)/, [htmlTokenTypes.DELIM_START, { token: 'tag.html', next: '@otherTag'} ]],
			[/(<\/)(\w+)/, [htmlTokenTypes.DELIM_START, { token: 'tag.html', next: '@otherTag' }]],
			[/</, htmlTokenTypes.DELIM_START],
			[/[^<]+/] // text
		],

		doctype: [
			[/<\?((php)|=)?/, { token: '@rematch', switchTo: '@phpInSimpleState.comment' }],
			[/[^>]+/, 'metatag.content.html' ],
			[/>/, 'metatag.html', '@pop' ],
		],

		comment: [
			[/<\?((php)|=)?/, { token: '@rematch', switchTo: '@phpInSimpleState.comment' }],
			[/-->/, 'comment.html', '@pop'],
			[/[^-]+/, 'comment.content.html'],
			[/./, 'comment.content.html']
		],

		otherTag: [
			[/<\?((php)|=)?/, { token: '@rematch', switchTo: '@phpInSimpleState.otherTag' }],
			[/\/?>/, htmlTokenTypes.DELIM_END, '@pop'],
			[/"([^"]*)"/, 'attribute.value'],
			[/'([^']*)'/, 'attribute.value'],
			[/[\w\-]+/, 'attribute.name'],
			[/=/, 'delimiter'],
			[/[ \t\r\n]+/], // whitespace
		],

		// -- BEGIN <script> tags handling

		// After <script
		script: [
			[/<\?((php)|=)?/, { token: '@rematch', switchTo: '@phpInSimpleState.script' }],
			[/type/, 'attribute.name', '@scriptAfterType'],
			[/"([^"]*)"/, 'attribute.value'],
			[/'([^']*)'/, 'attribute.value'],
			[/[\w\-]+/, 'attribute.name'],
			[/=/, 'delimiter'],
			[/>/, { token: htmlTokenTypes.DELIM_END, next: '@scriptEmbedded.text/javascript', nextEmbedded: 'text/javascript'} ],
			[/[ \t\r\n]+/], // whitespace
			[/(<\/)(script\s*)(>)/, [ htmlTokenTypes.DELIM_START, 'tag.html', { token: htmlTokenTypes.DELIM_END, next: '@pop' } ]]
		],

		// After <script ... type
		scriptAfterType: [
			[/<\?((php)|=)?/, { token: '@rematch', switchTo: '@phpInSimpleState.scriptAfterType' }],
			[/=/,'delimiter', '@scriptAfterTypeEquals'],
			[/[ \t\r\n]+/], // whitespace
			[/<\/script\s*>/, { token: '@rematch', next: '@pop' }]
		],

		// After <script ... type =
		scriptAfterTypeEquals: [
			[/<\?((php)|=)?/, { token: '@rematch', switchTo: '@phpInSimpleState.scriptAfterTypeEquals' }],
			[/"([^"]*)"/, { token: 'attribute.value', switchTo: '@scriptWithCustomType.$1' } ],
			[/'([^']*)'/, { token: 'attribute.value', switchTo: '@scriptWithCustomType.$1' } ],
			[/[ \t\r\n]+/], // whitespace
			[/<\/script\s*>/, { token: '@rematch', next: '@pop' }]
		],

		// After <script ... type = $S2
		scriptWithCustomType: [
			[/<\?((php)|=)?/, { token: '@rematch', switchTo: '@phpInSimpleState.scriptWithCustomType.$S2' }],
			[/>/, { token: htmlTokenTypes.DELIM_END, next: '@scriptEmbedded.$S2', nextEmbedded: '$S2'}],
			[/"([^"]*)"/, 'attribute.value'],
			[/'([^']*)'/, 'attribute.value'],
			[/[\w\-]+/, 'attribute.name'],
			[/=/, 'delimiter'],
			[/[ \t\r\n]+/], // whitespace
			[/<\/script\s*>/, { token: '@rematch', next: '@pop' }]
		],

		scriptEmbedded: [
			[/<\?((php)|=)?/, { token: '@rematch', switchTo: '@phpInEmbeddedState.scriptEmbedded.$S2', nextEmbedded: '@pop' }],
			[/<\/script/, { token: '@rematch', next: '@pop', nextEmbedded: '@pop' }]
		],

		// -- END <script> tags handling


		// -- BEGIN <style> tags handling

		// After <style
		style: [
			[/<\?((php)|=)?/, { token: '@rematch', switchTo: '@phpInSimpleState.style' }],
			[/type/, 'attribute.name', '@styleAfterType'],
			[/"([^"]*)"/, 'attribute.value'],
			[/'([^']*)'/, 'attribute.value'],
			[/[\w\-]+/, 'attribute.name'],
			[/=/, 'delimiter'],
			[/>/, { token: htmlTokenTypes.DELIM_END, next: '@styleEmbedded.text/css', nextEmbedded: 'text/css'} ],
			[/[ \t\r\n]+/], // whitespace
			[/(<\/)(style\s*)(>)/, [htmlTokenTypes.DELIM_START, 'tag.html', { token: htmlTokenTypes.DELIM_END, next: '@pop' } ]]
		],

		// After <style ... type
		styleAfterType: [
			[/<\?((php)|=)?/, { token: '@rematch', switchTo: '@phpInSimpleState.styleAfterType' }],
			[/=/,'delimiter', '@styleAfterTypeEquals'],
			[/[ \t\r\n]+/], // whitespace
			[/<\/style\s*>/, { token: '@rematch', next: '@pop' }]
		],

		// After <style ... type =
		styleAfterTypeEquals: [
			[/<\?((php)|=)?/, { token: '@rematch', switchTo: '@phpInSimpleState.styleAfterTypeEquals' }],
			[/"([^"]*)"/, { token: 'attribute.value', switchTo: '@styleWithCustomType.$1' } ],
			[/'([^']*)'/, { token: 'attribute.value', switchTo: '@styleWithCustomType.$1' } ],
			[/[ \t\r\n]+/], // whitespace
			[/<\/style\s*>/, { token: '@rematch', next: '@pop' }]
		],

		// After <style ... type = $S2
		styleWithCustomType: [
			[/<\?((php)|=)?/, { token: '@rematch', switchTo: '@phpInSimpleState.styleWithCustomType.$S2' }],
			[/>/, { token: htmlTokenTypes.DELIM_END, next: '@styleEmbedded.$S2', nextEmbedded: '$S2'}],
			[/"([^"]*)"/, 'attribute.value'],
			[/'([^']*)'/, 'attribute.value'],
			[/[\w\-]+/, 'attribute.name'],
			[/=/, 'delimiter'],
			[/[ \t\r\n]+/], // whitespace
			[/<\/style\s*>/, { token: '@rematch', next: '@pop' }]
		],

		styleEmbedded: [
			[/<\?((php)|=)?/, { token: '@rematch', switchTo: '@phpInEmbeddedState.styleEmbedded.$S2', nextEmbedded: '@pop' }],
			[/<\/style/, { token: '@rematch', next: '@pop', nextEmbedded: '@pop' }]
		],

		// -- END <style> tags handling


		phpInSimpleState: [
			[/<\?((php)|=)?/, 'metatag.php'],
			[/\?>/, { token: 'metatag.php', switchTo: '@$S2.$S3' }],
			{ include: 'phpRoot' }
		],

		phpInEmbeddedState: [
			[/<\?((php)|=)?/, 'metatag.php'],
			[/\?>/, { token: 'metatag.php', switchTo: '@$S2.$S3', nextEmbedded: '$S3' }],
			{ include: 'phpRoot' }
		],

		phpRoot: [
			[/[a-zA-Z_]\w*/, {
				cases: {
					'@phpKeywords': { token:'keyword.php' },
					'@phpCompileTimeConstants': { token: 'constant.php'},
					'@default': 'identifier.php'
				}
			}],
			[/[$a-zA-Z_]\w*/, {
				cases: {
					'@phpPreDefinedVariables': { token:'variable.predefined.php' },
					'@default': 'variable.php'
				}
			}],

			// brackets
			[/[{}]/, 'delimiter.bracket.php' ],
			[/[\[\]]/, 'delimiter.array.php' ],
			[/[()]/, 'delimiter.parenthesis.php' ],

			// whitespace
			[/[ \t\r\n]+/],

			// comments
			[/#/, 'comment.php', '@phpLineComment'],
			[/\/\//, 'comment.php', '@phpLineComment'],

			// block comments
			[/\/\*/, 'comment.php', '@phpComment' ],

			// strings
			[/"/, 'string.php', '@phpDoubleQuoteString' ],
			[/'/, 'string.php', '@phpSingleQuoteString' ],

			// delimiters
			[/[\+\-\*\%\&\|\^\~\!\=\<\>\/\?\;\:\.\,\@]/, 'delimiter.php' ],

			// numbers
			[/\d*\d+[eE]([\-+]?\d+)?/, 'number.float.php'],
			[/\d*\.\d+([eE][\-+]?\d+)?/, 'number.float.php'],
			[/0[xX][0-9a-fA-F']*[0-9a-fA-F]/, 'number.hex.php'],
			[/0[0-7']*[0-7]/, 'number.octal.php'],
			[/0[bB][0-1']*[0-1]/, 'number.binary.php'],
			[/\d[\d']*/, 'number.php'],
			[/\d/, 'number.php'],
		],

		phpComment: [
			[/\*\//, 'comment.php', '@pop'],
			[/[^*]+/, 'comment.php'],
			[/./, 'comment.php']
		],

		phpLineComment: [
			[/\?>/, { token: '@rematch', next: '@pop' }],
			[/.$/, 'comment.php', '@pop'],
			[/[^?]+$/, 'comment.php', '@pop'],
			[/[^?]+/, 'comment.php'],
			[/./, 'comment.php']
		],

		phpDoubleQuoteString: [
			[/[^\\"]+/,  'string.php'],
			[/@escapes/, 'string.escape.php'],
			[/\\./,      'string.escape.invalid.php'],
			[/"/,        'string.php', '@pop' ]
		],

		phpSingleQuoteString: [
			[/[^\\']+/,  'string.php'],
			[/@escapes/, 'string.escape.php'],
			[/\\./,      'string.escape.invalid.php'],
			[/'/,        'string.php', '@pop' ]
		],
	},

	phpKeywords: [
		'abstract', 'and', 'array', 'as', 'break',
		'callable', 'case', 'catch', 'cfunction', 'class', 'clone',
		'const', 'continue', 'declare', 'default', 'do',
		'else', 'elseif', 'enddeclare', 'endfor', 'endforeach',
		'endif', 'endswitch', 'endwhile', 'extends', 'false', 'final',
		'for', 'foreach', 'function', 'global', 'goto',
		'if', 'implements', 'interface', 'instanceof', 'insteadof',
		'namespace', 'new', 'null', 'object', 'old_function', 'or', 'private',
		'protected', 'public', 'resource', 'static', 'switch', 'throw', 'trait',
		'try', 'true', 'use', 'var', 'while', 'xor',
		'die', 'echo', 'empty', 'exit', 'eval',
		'include', 'include_once', 'isset', 'list', 'require',
		'require_once', 'return', 'print', 'unset', 'yield',
		'__construct'
	],

	phpCompileTimeConstants: [
		'__CLASS__',
		'__DIR__',
		'__FILE__',
		'__LINE__',
		'__NAMESPACE__',
		'__METHOD__',
		'__FUNCTION__',
		'__TRAIT__'
	],

	phpPreDefinedVariables: [
		'$GLOBALS',
		'$_SERVER',
		'$_GET',
		'$_POST',
		'$_FILES',
		'$_REQUEST',
		'$_SESSION',
		'$_ENV',
		'$_COOKIE',
		'$php_errormsg',
		'$HTTP_RAW_POST_DATA',
		'$http_response_header',
		'$argc',
		'$argv'
	],

	escapes:  /\\(?:[abfnrtv\\"']|x[0-9A-Fa-f]{1,4}|u[0-9A-Fa-f]{4}|U[0-9A-Fa-f]{8})/,
};

// TESTED WITH

// <style type="text/css" >
//   .boo { background: blue;
//   <?=''?>
//   }
//   .boo { background: blue;  <?=''?>  }
// </style>
// <!--

// <?= '' ?>

// -->
// <?php
// // The next line contains a syntax error:
// __construct
// if () {
// 	return "The parser recovers from this type of syntax error";
// }
// ?>
// <html>
// <head>
// 	<title <?=''?>>Example page</title>
//   <style <?=''?>>
//     .boo { background: blue; <?=''?> }
//   </style>
// </head>

// <body>

// <script <?=''?> type<?=''?>=<?=''?>"text/javascript"<?=''?>>
// 	// Some PHP embedded inside JS
// 	// Generated <?=date('l, F jS, Y')?>

// 	var server_token = <?=rand(5, 10000)?>
// 	if (typeof server_token === 'number') {
// 		alert('token: ' + server_token);
// 	}
// </script>

// <div>
// Hello
// <? if (isset($user)) { ?>
// 	<b><?=$user?></b>
// <? } else { ?>
// 	<i>guest</i>
// <? } ?>
// !
// </div>

// <?php

// 	/* Example PHP file
// 	multiline comment
// 	*/

//  # Another single line comment

// 	$cards = array("ah", "ac", "ad", "as",
// 		"2h", "2c", "2d", "2s",
// 		"3h", "3c", "3d", "3s",
// 		"4h", "4c", "4d", "4s",
// 		"5h", "5c", "5d", "5s",
// 		"6h", "6c", "6d", "6s",
// 		"7h", "7c", "7d", "7s",
// 		"8h", "8c", "8d", "8s",
// 		"9h", "9c", "9d", "9s",
// 		"th", "tc", "td", "ts",
// 		"jh", "jc", "jd", "js",
// 		"qh", "qc", "qd", "qs",
// 		"kh", "kc", "kd", "ks");

// 	srand(time());

// 	for($i = 0; $i < 52; $i++) {
// 		$count = count($cards);
// 		$random = (rand()%$count);

// 		if($cards[$random] == "") {
// 			$i--;
// 		} else {
// 			$deck[] = $cards[$random];
// 			$cards[$random] = "";
// 		}
// 	}
// $_GET
// __CLASS__

// 	srand(time());
// 	$starting_point = (rand()%51);
// 	print("Starting point for cut cards is: $starting_point<p>");

// 	// display shuffled cards (EXAMPLE ONLY)
// 	for ($index = 0; $index < 52; $index++) {
// 		if ($starting_point == 52) { $starting_point = 0; }
// 		print("Uncut Point: <strong>$deck[$index]</strong> ");
// 		print("Starting Point: <strong>$deck[$starting_point]</strong><br>");
// 		$starting_point++;
// 	}
// ?>

// </body>
// </html>