<?php

namespace MediaWiki\Extension\Math\Tests;

use MediaWiki\Config\ServiceOptions;
use MediaWiki\Extension\Math\MathConfig;
use MediaWikiUnitTestCase;

/**
 * @covers \MediaWiki\Extension\Math\MathConfig
 */
class MathConfigTest extends MediaWikiUnitTestCase {

	private const TEST_DEFAULT = 'test-default';

	private function newMathConfig( array $configOverrides ): MathConfig {
		return new MathConfig(
			new ServiceOptions( MathConfig::CONSTRUCTOR_OPTIONS, $configOverrides + [
				'MathDisableTexFilter' => MathConfig::ALWAYS,
				'MathValidModes' => [ MathConfig::MODE_SOURCE ],
			] )
		);
	}

	public function provideTexCheckDisabled() {
		yield 'always' => [ 'always', MathConfig::ALWAYS ];
		yield 'never' => [ 'never', MathConfig::NEVER ];
		yield 'new' => [ 'new', MathConfig::NEW ];
		yield 'true' => [ true, MathConfig::NEVER ];
		yield 'false' => [ false, MathConfig::ALWAYS ];
		yield 'garbage' => [ 'garbage', MathConfig::ALWAYS ];
		yield 'wrong case' => [ 'NEVER', MathConfig::NEVER ];
	}

	/**
	 * @dataProvider provideTexCheckDisabled
	 */
	public function testTexCheckDisabled( $configValue, string $expected ) {
		$mathConfig = $this->newMathConfig( [ 'MathDisableTexFilter' => $configValue ] );
		$this->assertSame( $expected, $mathConfig->texCheckDisabled() );
	}

	public function provideNormalizeRenderingMode() {
		yield 'legacy user option' => [ 1, self::TEST_DEFAULT ];
		yield 'png user option' => [ 0, MathConfig::MODE_PNG ];
		yield 'source user option' => [ 3, MathConfig::MODE_SOURCE ];
		yield 'mathml user option' => [ 5, MathConfig::MODE_MATHML ];
		yield 'latexml user option' => [ 7, MathConfig::MODE_LATEXML ];
		yield 'png string' => [ 'png', MathConfig::MODE_PNG ];
		yield 'source string' => [ 'source', MathConfig::MODE_SOURCE ];
		yield 'mathml string' => [ 'mathml', MathConfig::MODE_MATHML ];
		yield 'latexml string' => [ 'latexml', MathConfig::MODE_LATEXML ];
		yield 'wrong capitalizaton' => [ 'LaTeXmL', MathConfig::MODE_LATEXML ];
		yield 'unrecognized' => [ 'garbage', self::TEST_DEFAULT ];
	}

	/**
	 * @dataProvider provideNormalizeRenderingMode
	 */
	public function testNormalizeRenderingMode( $input, string $expected ) {
		$this->assertSame( $expected, MathConfig::normalizeRenderingMode( $input, self::TEST_DEFAULT ) );
	}

	public function testGetValidRenderingModes() {
		$mathConfig = $this->newMathConfig( [
			'MathValidModes' => [ MathConfig::MODE_MATHML, 5, MathConfig::MODE_PNG, 'this will be converted to png', ],
		] );
		$this->assertArrayEquals(
			[ MathConfig::MODE_MATHML, MathConfig::MODE_PNG ],
			$mathConfig->getValidRenderingModes()
		);
	}

	public function provideIsValidRenderingMode() {
		yield 'valid' => [ MathConfig::MODE_MATHML, true ];
		yield 'garbage' => [ 'garbage', false ];
		yield 'does not normalize' => [ 0, false ];
	}

	/**
	 * @dataProvider provideIsValidRenderingMode
	 */
	public function testIsValidRenderingMode( $mode, $expected ) {
		$mathConfig = $this->newMathConfig( [
			'MathValidModes' => [ MathConfig::MODE_PNG, MathConfig::MODE_MATHML ],
		] );
		$this->assertSame( $expected, $mathConfig->isValidRenderingMode( $mode ) );
	}

	public function testGetValidRenderingModeKeys() {
		$mathConfig = $this->newMathConfig( [
			'MathValidModes' => [ MathConfig::MODE_PNG ],
		] );
		$this->assertArrayEquals( [ 'mw_math_png' ], $mathConfig->getValidRenderingModeKeys() );
	}
}