<?php

use MediaWiki\Languages\LanguageConverterFactory;
use MediaWiki\MediaWikiServices;
use Wikimedia\TestingAccessWrapper;

/**
 * @group large
 * @group Language
 * @coversDefaultClass MediaWiki\Languages\LanguageConverterFactory
 */
class LanguageConverterFactoryTest extends MediaWikiLangTestCase {
	/**
	 * @covers ::__construct
	 * @covers ::instantiateConverter
	 * @covers ::getLanguageConverter
	 * @dataProvider codeProvider
	 */
	public function testLanguageConverters(
		$code,
		$type,
		$variants,
		$variantFallbacks,
		$variantNames,
		$flags,
		$manualLevel
	) {
		$lang = MediaWikiServices::getInstance()->getLanguageFactory()->getLanguage( $code );
		$factory = new LanguageConverterFactory(
			MediaWikiServices::getInstance()->getObjectFactory(),
			false,
			false,
			false,
			static function () use ( $lang ) {
				return $lang;
			}
		);
		$this->assertFalse( $factory->isConversionDisabled() );
		$this->assertFalse( $factory->isTitleConversionDisabled() );
		$this->assertFalse( $factory->isLinkConversionDisabled() );
		$converter = $factory->getLanguageConverter( $lang );
		$this->verifyConverter(
			$converter,
			$lang,
			$code,
			$type,
			$variants,
			$variantFallbacks,
			$variantNames,
			$flags,
			$manualLevel
		);
	}

	/**
	 * @covers ::__construct
	 * @covers ::instantiateConverter
	 * @covers ::getLanguageConverter
	 */
	public function testCreateFromCodeEnPigLatin() {
		$lang = MediaWikiServices::getInstance()->getLanguageFactory()->getLanguage( 'en' );
		$factory = new LanguageConverterFactory(
			MediaWikiServices::getInstance()->getObjectFactory(),
			true,
			false,
			false,
			static function () use ( $lang ) {
				return $lang;
			}
		);
		$this->assertFalse( $factory->isConversionDisabled() );
		$this->assertFalse( $factory->isTitleConversionDisabled() );
		$this->assertFalse( $factory->isLinkConversionDisabled() );

		$converter = $factory->getLanguageConverter( $lang );

		$this->verifyConverter(
			$converter,
			$lang,
			'en',
			'EnConverter',
			[ 'en', 'en-x-piglatin' ],
			[],
			[],
			[],
			[ 'en' => 'bidirectional', 'en-x-piglatin' => 'bidirectional' ]
		);
	}

	/**
	 * @covers ::__construct
	 * @covers ::instantiateConverter
	 * @covers ::getLanguageConverter
	 * @dataProvider booleanProvider
	 */
	public function testDisabledBooleans( $pigLatinDisabled, $conversionDisabled, $titleDisabled ) {
		$lang = MediaWikiServices::getInstance()->getLanguageFactory()->getLanguage( 'en' );
		$factory = new LanguageConverterFactory(
			MediaWikiServices::getInstance()->getObjectFactory(),
			!$pigLatinDisabled,
			$conversionDisabled,
			$titleDisabled,
			static function () use ( $lang ) {
				return $lang;
			}
		);
		$converter = $factory->getLanguageConverter( $lang );

		$this->assertSame( $conversionDisabled, $factory->isConversionDisabled() );
		$this->assertSame( $titleDisabled, $factory->isTitleConversionDisabled() );
		$this->assertSame( $conversionDisabled || $titleDisabled, $factory->isLinkConversionDisabled() );

		if ( $pigLatinDisabled ) {
			$this->assertNotContains(
				'en-x-piglatin', $converter->getVariants()
			);
		} else {
			$this->assertContains(
				'en-x-piglatin', $converter->getVariants()
			);
		}
	}

	public function booleanProvider() {
		return [
			[ false, false, false ],
			[ false, false, true ],
			[ false,true,false ],
			[ false,true,true ],
			[ true, false, false ],
			[ true, false, true ],
			[ true,true,false ],
			[ true,true,true ],
		];
	}

	/**
	 * @covers ::__construct
	 * @covers ::instantiateConverter
	 * @covers ::getLanguageConverter
	 */
	public function testDefaultContentLanguageFallback() {
		$lang = MediaWikiServices::getInstance()->getLanguageFactory()->getLanguage( 'en' );
		$factory = new LanguageConverterFactory(
			MediaWikiServices::getInstance()->getObjectFactory(),
			false,
			false,
			false,
			static function () use ( $lang ) {
				return $lang;
			}
		);
		$this->assertFalse( $factory->isConversionDisabled() );
		$this->assertFalse( $factory->isTitleConversionDisabled() );
		$this->assertFalse( $factory->isLinkConversionDisabled() );

		$converter = $factory->getLanguageConverter();

		$this->verifyConverter(
			$converter,
			$lang,
			'en',
			'TrivialLanguageConverter',
			[ 'en' ],
			[],
			[],
			[],
			[]
		);
	}

	private function verifyConverter(
		$converter,
		$lang,
		$code,
		$type,
		$variants,
		$variantFallbacks,
		$variantNames,
		$flags,
		$manualLevel
	) {
		$this->assertEquals( $type, get_class( $converter ) );

		if ( is_a( $converter, LanguageConverter::class ) ) {
			$testConverter = TestingAccessWrapper::newFromObject( $converter );
			$this->assertSame( $lang, $testConverter->mLangObj, "Language should be as provided" );

			$this->assertEquals( $code, $testConverter->getMainCode(),
				"mMainLanguageCode should be as $code" );
			$this->assertEquals( $manualLevel, $testConverter->getManualLevel(), "Manual Level" );

			$this->assertEquals( $variants, $testConverter->getVariants(), "Variants" );
			$this->assertEquals( $variantFallbacks, $testConverter->getVariantsFallbacks(), "Variant Fallbacks" );
			$defaultFlags = [
				'A' => 'A',
				'T' => 'T',
				'R' => 'R',
				'D' => 'D',
				'-' => '-',
				'H' => 'H',
				'N' => 'N',
			];
			$this->assertArraySubmapSame(
				array_merge( $defaultFlags, $flags ),
				$converter->getFlags(),
				"Flags"
			);
		}
	}

	public function codeProvider() {
		$trivialWithNothingElseCodes = [
			'aa', 'ab', 'abs', 'ace', 'ady', 'ady-cyrl', 'aeb', 'aeb-arab', 'aeb-latn',
			'af', 'ak', 'aln', 'als', 'am', 'an', 'ang', 'anp', 'ar', 'arc', 'arn',
			'arq', 'ary', 'arz', 'as', 'ase', 'ast', 'atj', 'av', 'avk', 'awa', 'ay',
			'az', 'azb', 'ba', 'ban-bali', 'bar', 'bat-smg', 'bbc', 'bbc-latn', 'bcc',
			'bcl', 'be', 'be-tarask', 'be-x-old', 'bg', 'bgn', 'bh', 'bho', 'bi', 'bjn',
			'bm', 'bn', 'bo', 'bpy', 'bqi', 'br', 'brh', 'bs', 'btm', 'bto', 'bug', 'bxr',
			'ca', 'cbk-zam', 'cdo', 'ce', 'ceb', 'ch', 'cho', 'chr', 'chy', 'ckb', 'co',
			'cps', 'cr', 'crh-latn', 'crh-cyrl', 'cs', 'csb', 'cu', 'cv', 'cy', 'da',
			'de', 'de-at', 'de-ch', 'de-formal', 'din', 'diq', 'dsb', 'dtp', 'dty',
			'dv', 'dz', 'ee', 'egl', 'el', 'eml', 'en', 'en-ca', 'en-gb', 'eo', 'es',
			'es-419', 'es-formal', 'et', 'eu', 'ext', 'fa', 'ff', 'fi', 'fit', 'fiu-vro',
			'fj', 'fo', 'fr', 'frc', 'frp', 'frr', 'fur', 'fy', 'ga', 'gag', 'gan-hans',
			'gan-hant', 'gcr', 'gd', 'gl', 'glk', 'gn', 'gom', 'gom-deva', 'gom-latn',
			'gor', 'got', 'grc', 'gsw', 'gu', 'gv', 'ha', 'hak', 'haw', 'he', 'hi',
			'hif', 'hif-latn', 'hil', 'ho', 'hr', 'hrx', 'hsb', 'ht', 'hu', 'hu-formal',
			'hy', 'hyw', 'hz', 'ia', 'id', 'ie', 'ig', 'ii', 'ik', 'ike-cans',
			'ike-latn', 'ilo', 'inh', 'io', 'is', 'it', 'ja', 'jam', 'jbo', 'jut',
			'jv', 'ka', 'kaa', 'kab', 'kbd', 'kbd-cyrl', 'kbp', 'kg', 'khw', 'ki',
			'kiu', 'kj', 'kjp', 'kk-arab', 'kk-cyrl', 'kk-latn', 'kk-cn', 'kk-kz',
			'kk-tr', 'kl', 'km', 'kn', 'ko', 'ko-kp', 'koi', 'kr', 'krc', 'kri', 'krj',
			'krl', 'ks', 'ks-arab', 'ks-deva', 'ksh', 'ku-latn', 'ku-arab', 'kum', 'kv',
			'kw', 'ky', 'la', 'lad', 'lb', 'lbe', 'lez', 'lfn', 'lg', 'li', 'lij', 'liv',
			'lki', 'lmo', 'ln', 'lo', 'lrc', 'loz', 'lt', 'ltg', 'lus', 'luz', 'lv',
			'lzh', 'lzz', 'mai', 'map-bms', 'mdf', 'mg', 'mh', 'mhr', 'mi', 'min', 'mk',
			'ml', 'mn', 'mni', 'mnw', 'mo', 'mr', 'mrj', 'ms', 'mt', 'mus', 'mwl', 'my',
			'myv', 'mzn', 'na', 'nah', 'nan', 'nap', 'nb', 'nds', 'nds-nl', 'ne', 'new',
			'ng', 'niu', 'nl', 'nl-informal', 'nn', 'no', 'nov', 'nqo', 'nrm', 'nso',
			'nv', 'ny', 'nys', 'oc', 'olo', 'om', 'or', 'os', 'pa', 'pag', 'pam', 'pap',
			'pcd', 'pdc', 'pdt', 'pfl', 'pi', 'pih', 'pl', 'pms', 'pnb', 'pnt', 'prg',
			'ps', 'pt', 'pt-br', 'qu', 'qug', 'rgn', 'rif', 'rm', 'rmy', 'rn', 'ro',
			'roa-rup', 'roa-tara', 'ru', 'rue', 'rup', 'ruq', 'ruq-cyrl', 'ruq-latn',
			'rw', 'sa', 'sah', 'sat', 'sc', 'scn', 'sco', 'sd', 'sdc', 'sdh', 'se',
			'sei', 'ses', 'sg', 'sgs', 'sh', 'shi-tfng', 'shi-latn', 'shn', 'shy-latn',
			'si', 'simple', 'sk', 'skr', 'skr-arab', 'sl', 'sli', 'sm', 'sma', 'sn',
			'so', 'sq', 'sr-ec', 'sr-el', 'srn', 'ss', 'st', 'sty', 'stq', 'su', 'sv',
			'sw', 'szl', 'szy', 'ta', 'tay', 'tcy', 'te', 'tet', 'tg-cyrl', 'tg-latn',
			'th', 'ti', 'tk', 'tl', 'tly-latn', 'tn', 'to', 'tpi', 'tr', 'tru', 'ts', 'tt',
			'tt-cyrl', 'tt-latn', 'tum', 'tw', 'ty', 'tyv', 'tzm', 'udm', 'ug', 'ug-arab',
			'ug-latn', 'uk', 'ur', 'uz-cyrl', 'uz-latn', 've', 'vec', 'vep', 'vi', 'vls',
			'vmf', 'vo', 'vot', 'vro', 'wa', 'war', 'wo', 'wuu', 'xal', 'xh', 'xmf', 'xsy',
			'yi', 'yo', 'yue', 'za', 'zea', 'zgh', 'zh-classical', 'zh-cn', 'zh-hans',
			'zh-hant', 'zh-hk', 'zh-min-nan', 'zh-mo', 'zh-my', 'zh-sg', 'zh-tw',
			'zh-yue', 'zu',
		];
		foreach ( $trivialWithNothingElseCodes as $code ) {
			# $code, $type, $variants, $variantFallbacks, $variantNames, $flags, $manualLevel
			yield $code => [ $code, 'TrivialLanguageConverter', [], [], [], [], [] ];
		}

		// Languages with a type of than TrivialLanguageConverter or with variants/flags/manual level
		yield 'ban' => [
			'ban', 'BanConverter',
			[ 'ban', 'ban-bali', 'ban-x-dharma', 'ban-x-palmleaf', 'ban-x-pku' ],
			[
				'ban-bali' => 'ban',
				'ban-x-dharma' => 'ban',
				'ban-x-palmleaf' => 'ban',
				'ban-x-pku' => 'ban',
			], [], [], [
				'ban' => 'bidirectional',
				'ban-bali' => 'bidirectional',
				'ban-x-dharma' => 'bidirectional',
				'ban-x-palmleaf' => 'bidirectional',
				'ban-x-pku' => 'bidirectional',
			]
		];

		yield 'crh' => [
			'crh', 'CrhConverter',
			[ 'crh', 'crh-cyrl', 'crh-latn' ],
			[
				'crh' => 'crh-latn',
				'crh-cyrl' => 'crh-latn',
				'crh-latn' => 'crh-cyrl',
			], [], [], [
				'crh' => 'bidirectional',
				'crh-cyrl' => 'bidirectional',
				'crh-latn' => 'bidirectional'
			]
		];

		yield 'gan' => [
			'gan', 'GanConverter',
			[ 'gan', 'gan-hans', 'gan-hant' ],
			[
				'gan' => [ 'gan-hans', 'gan-hant' ],
				'gan-hans' => [ 'gan' ],
				'gan-hant' => [ 'gan' ],
			], [], [], [
				'gan' => 'disable',
				'gan-hans' => 'bidirectional',
				'gan-hant' => 'bidirectional'
			]
		];

		yield 'iu' => [
			'iu', 'IuConverter',
			[ 'iu', 'ike-cans', 'ike-latn' ],
			[
				'iu' => 'ike-cans',
				'ike-cans' => 'iu',
				'ike-latn' => 'iu',
			], [], [], [
				'iu' => 'bidirectional',
				'ike-cans' => 'bidirectional',
				'ike-latn' => 'bidirectional'
			]
		];

		yield 'kk' => [
			'kk', 'KkConverter',
			[ 'kk', 'kk-cyrl', 'kk-latn', 'kk-arab', 'kk-kz', 'kk-tr', 'kk-cn' ],
			[
				'kk' => 'kk-cyrl',
				'kk-cyrl' => 'kk',
				'kk-latn' => 'kk',
				'kk-arab' => 'kk',
				'kk-kz' => 'kk-cyrl',
				'kk-tr' => 'kk-latn',
				'kk-cn' => 'kk-arab'
			], [], [], [
				'kk' => 'bidirectional',
				'kk-cyrl' => 'bidirectional',
				'kk-latn' => 'bidirectional',
				'kk-arab' => 'bidirectional',
				'kk-kz' => 'bidirectional',
				'kk-tr' => 'bidirectional',
				'kk-cn' => 'bidirectional'
			]
		];

		yield 'ku' => [
			'ku', 'KuConverter',
			[ 'ku', 'ku-arab', 'ku-latn' ],
			[
				'ku' => 'ku-latn',
				'ku-arab' => 'ku-latn',
				'ku-latn' => 'ku-arab'
			], [], [], [
				'ku' => 'bidirectional',
				'ku-arab' => 'bidirectional',
				'ku-latn' => 'bidirectional'
			]
		];

		yield 'shi' => [
			'shi', 'ShiConverter',
			[ 'shi', 'shi-tfng', 'shi-latn' ],
			[ 'shi' => 'shi-tfng','shi-tfng' => 'shi','shi-latn' => 'shi' ],
			[], [],
			[
				'shi' => 'bidirectional',
				'shi-tfng' => 'bidirectional',
				'shi-latn' => 'bidirectional'
			]
		];

		yield 'sr' => [
			'sr', 'SrConverter',
			[ 'sr', 'sr-ec', 'sr-el' ], [
				'sr' => 'sr-ec',
				'sr-ec' => 'sr',
				'sr-el' => 'sr'
			], [], [
				'S' => 'S',
				'писмо' => 'S',
				'pismo' => 'S',
				'W' => 'W',
				'реч' => 'W',
				'reč' => 'W',
				'ријеч' => 'W',
				'riječ' => 'W'
			], [
				'sr' => 'bidirectional',
				'sr-ec' => 'bidirectional',
				'sr-el' => 'bidirectional'
			]
		];

		yield 'tg' => [
			'tg', 'TgConverter',
			[ 'tg', 'tg-latn' ],
			[], [], [], [
				'tg' => 'bidirectional',
				'tg-latn' => 'bidirectional'
			]
		];

		yield 'tly' => [
			'tly', 'TlyConverter',
			[ 'tly', 'tly-cyrl' ],
			[ 'tly-cyrl' => 'tly' ],
			[],
			[
				'tly' => 'tly',
				'tly-cyrl' => 'tly-cyrl'
			],
			[
				'tly' => 'bidirectional',
				'tly-cyrl' => 'bidirectional',
			]
		];

		yield 'uz' => [
			'uz', 'UzConverter',
			[ 'uz', 'uz-latn', 'uz-cyrl' ],
			[
				'uz' => 'uz-latn',
				'uz-cyrl' => 'uz',
				'uz-latn' => 'uz',
			], [], [
				'uz' => 'uz',
				'uz-latn' => 'uz-latn',
				'uz-cyrl' => 'uz-cyrl'
			], [
				'uz' => 'bidirectional',
				'uz-latn' => 'bidirectional',
				'uz-cyrl' => 'bidirectional',
			]
		];

		$zh_variants = [
			'zh',
			'zh-hans',
			'zh-hant',
			'zh-cn',
			'zh-hk',
			'zh-mo',
			'zh-my',
			'zh-sg',
			'zh-tw'
		];

		$zh_variantfallbacks = [
			'zh' => [ 'zh-hans', 'zh-hant', 'zh-cn', 'zh-tw', 'zh-hk', 'zh-sg', 'zh-mo', 'zh-my' ],
			'zh-hans' => [ 'zh-cn', 'zh-sg', 'zh-my' ],
			'zh-hant' => [ 'zh-tw', 'zh-hk', 'zh-mo' ],
			'zh-cn' => [ 'zh-hans', 'zh-sg', 'zh-my' ],
			'zh-sg' => [ 'zh-hans', 'zh-cn', 'zh-my' ],
			'zh-my' => [ 'zh-hans', 'zh-sg', 'zh-cn' ],
			'zh-tw' => [ 'zh-hant', 'zh-hk', 'zh-mo' ],
			'zh-hk' => [ 'zh-hant', 'zh-mo', 'zh-tw' ],
			'zh-mo' => [ 'zh-hant', 'zh-hk', 'zh-tw' ],
		];
		$zh_ml = [
			'zh' => 'disable',
			'zh-hans' => 'unidirectional',
			'zh-hant' => 'unidirectional',
			'zh-cn' => 'bidirectional',
			'zh-hk' => 'bidirectional',
			'zh-mo' => 'bidirectional',
			'zh-my' => 'bidirectional',
			'zh-sg' => 'bidirectional',
			'zh-tw' => 'bidirectional',
		];

		$zh_flags = [
			'A' => 'A',
			'T' => 'T',
			'R' => 'R',
			'D' => 'D',
			'-' => '-',
			'H' => 'H',
			'N' => 'N',
			'zh' => 'zh',
			'zh-hans' => 'zh-hans',
			'zh-hant' => 'zh-hant',
			'zh-cn' => 'zh-cn',
			'zh-hk' => 'zh-hk',
			'zh-mo' => 'zh-mo',
			'zh-my' => 'zh-my',
			'zh-sg' => 'zh-sg',
			'zh-tw' => 'zh-tw'
		];
		yield 'zh' => [ 'zh', 'ZhConverter', $zh_variants, $zh_variantfallbacks,[], $zh_flags, $zh_ml ];
	}
}