<?php

/*
 * This file is part of PHP CS Fixer.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *     Dariusz Rumiński <dariusz.ruminski@gmail.com>
 *
 * This source file is subject to the MIT license that is bundled
 * with this source code in the file LICENSE.
 */

namespace PhpCsFixer\Tests\Fixer\ConstantNotation;

use PhpCsFixer\Tests\Test\AbstractFixerTestCase;

/**
 * @author Filippo Tessarotto <zoeslam@gmail.com>
 *
 * @internal
 *
 * @covers \PhpCsFixer\Fixer\ConstantNotation\NativeConstantInvocationFixer
 */
final class NativeConstantInvocationFixerTest extends AbstractFixerTestCase
{
    public function testConfigureRejectsUnknownConfigurationKey()
    {
        $key = 'foo';

        $this->expectException(\PhpCsFixer\ConfigurationException\InvalidConfigurationException::class);
        $this->expectExceptionMessage(sprintf('[native_constant_invocation] Invalid configuration: The option "%s" does not exist.', $key));

        $this->fixer->configure([
            $key => 'bar',
        ]);
    }

    /**
     * @dataProvider provideInvalidConfigurationElementCases
     *
     * @param mixed $element
     */
    public function testConfigureRejectsInvalidExcludeConfigurationElement($element)
    {
        $this->expectException(\PhpCsFixer\ConfigurationException\InvalidConfigurationException::class);
        $this->expectExceptionMessage(sprintf(
            'Each element must be a non-empty, trimmed string, got "%s" instead.',
            \is_object($element) ? \get_class($element) : \gettype($element)
        ));

        $this->fixer->configure([
            'exclude' => [
                $element,
            ],
        ]);
    }

    /**
     * @dataProvider provideInvalidConfigurationElementCases
     *
     * @param mixed $element
     */
    public function testConfigureRejectsInvalidIncludeConfigurationElement($element)
    {
        $this->expectException(\PhpCsFixer\ConfigurationException\InvalidConfigurationException::class);
        $this->expectExceptionMessage(sprintf(
            'Each element must be a non-empty, trimmed string, got "%s" instead.',
            \is_object($element) ? \get_class($element) : \gettype($element)
        ));

        $this->fixer->configure([
            'include' => [
                $element,
            ],
        ]);
    }

    /**
     * @return array
     */
    public function provideInvalidConfigurationElementCases()
    {
        return [
            'null' => [null],
            'false' => [false],
            'true' => [true],
            'int' => [1],
            'array' => [[]],
            'float' => [0.1],
            'object' => [new \stdClass()],
            'not-trimmed' => ['  M_PI  '],
        ];
    }

    public function testConfigureResetsExclude()
    {
        $this->fixer->configure([
            'exclude' => [
                'M_PI',
            ],
        ]);

        $before = '<?php var_dump(m_pi, M_PI);';
        $after = '<?php var_dump(m_pi, \\M_PI);';

        $this->doTest($before);

        $this->fixer->configure([]);

        $this->doTest($after, $before);
    }

    public function testIsRisky()
    {
        $fixer = $this->createFixer();

        $this->assertTrue($fixer->isRisky());
    }

    /**
     * @dataProvider provideFixWithDefaultConfigurationCases
     *
     * @param string      $expected
     * @param null|string $input
     */
    public function testFixWithDefaultConfiguration($expected, $input = null)
    {
        $this->doTest($expected, $input);
    }

    /**
     * @return array
     */
    public function provideFixWithDefaultConfigurationCases()
    {
        return [
            ['<?php var_dump(NULL, FALSE, TRUE, 1);'],
            ['<?php echo CUSTOM_DEFINED_CONSTANT_123;'],
            ['<?php echo m_pi; // Constant are case sensitive'],
            ['<?php namespace M_PI;'],
            ['<?php namespace Foo; use M_PI;'],
            ['<?php class M_PI {}'],
            ['<?php class Foo extends M_PI {}'],
            ['<?php class Foo implements M_PI {}'],
            ['<?php interface M_PI {};'],
            ['<?php trait M_PI {};'],
            ['<?php class Foo { const M_PI = 1; }'],
            ['<?php class Foo { use M_PI; }'],
            ['<?php class Foo { public $M_PI = 1; }'],
            ['<?php class Foo { function M_PI($M_PI) {} }'],
            ['<?php class Foo { function bar() { $M_PI = M_PI() + self::M_PI(); } }'],
            ['<?php class Foo { function bar() { $this->M_PI(self::M_PI); } }'],
            ['<?php namespace Foo; use M_PI;'],
            ['<?php namespace Foo; use Bar as M_PI;'],
            ['<?php echo Foo\\M_PI\\Bar;'],
            ['<?php M_PI::foo();'],
            ['<?php function x(M_PI $foo, M_PI &$bar, M_PI ...$baz) {}'],
            ['<?php $foo instanceof M_PI;'],
            ['<?php class x implements FOO, M_PI, BAZ {}'],
            ['<?php class Foo { use Bar, M_PI { Bar::baz insteadof M_PI; } }'],
            ['<?php M_PI: goto M_PI;'],
            [
                '<?php echo \\M_PI;',
                '<?php echo M_PI;',
            ],
            [
                '<?php namespace Foo; use M_PI; echo \\M_PI;',
                '<?php namespace Foo; use M_PI; echo M_PI;',
            ],
            [
                // Here we are just testing the algorithm.
                // A user likely would add this M_PI to its excluded list.
                '<?php namespace M_PI; const M_PI = 1; return \\M_PI;',
                '<?php namespace M_PI; const M_PI = 1; return M_PI;',
            ],
            [
                '<?php
echo \\/**/M_PI;
echo \\ M_PI;
echo \\#
#
M_PI;
echo \\M_PI;
',
                '<?php
echo \\/**/M_PI;
echo \\ M_PI;
echo \\#
#
M_PI;
echo M_PI;
',
            ],
        ];
    }

    /**
     * @dataProvider provideFix70WithDefaultConfigurationCases
     *
     * @param string      $expected
     * @param null|string $input
     * @requires PHP 7.0
     */
    public function testFix70WithDefaultConfiguration($expected, $input = null)
    {
        $this->doTest($expected, $input);
    }

    /**
     * @return array
     */
    public function provideFix70WithDefaultConfigurationCases()
    {
        return [
            ['<?php function foo(): M_PI {}'],
            ['<?php use X\Y\{FOO, BAR as BAR2, M_PI};'],
        ];
    }

    /**
     * @dataProvider provideFixWithConfiguredCustomIncludeCases
     *
     * @param string      $expected
     * @param null|string $input
     */
    public function testFixWithConfiguredCustomInclude($expected, $input = null)
    {
        $this->fixer->configure([
            'include' => [
                'FOO_BAR_BAZ',
            ],
        ]);

        $this->doTest($expected, $input);
    }

    /**
     * @return array
     */
    public function provideFixWithConfiguredCustomIncludeCases()
    {
        return [
            [
                '<?php echo \\FOO_BAR_BAZ . \\M_PI;',
                '<?php echo FOO_BAR_BAZ . M_PI;',
            ],
            [
                '<?php class Foo { public function bar($foo) { return \\FOO_BAR_BAZ . \\M_PI; } }',
                '<?php class Foo { public function bar($foo) { return FOO_BAR_BAZ . M_PI; } }',
            ],
        ];
    }

    /**
     * @dataProvider provideFixWithConfiguredOnlyIncludeCases
     *
     * @param string      $expected
     * @param null|string $input
     */
    public function testFixWithConfiguredOnlyInclude($expected, $input = null)
    {
        $this->fixer->configure([
            'fix_built_in' => false,
            'include' => [
                'M_PI',
            ],
        ]);

        $this->doTest($expected, $input);
    }

    /**
     * @return array
     */
    public function provideFixWithConfiguredOnlyIncludeCases()
    {
        return [
            [
                '<?php echo PHP_SAPI . FOO_BAR_BAZ . \\M_PI;',
                '<?php echo PHP_SAPI . FOO_BAR_BAZ . M_PI;',
            ],
            [
                '<?php class Foo { public function bar($foo) { return PHP_SAPI . FOO_BAR_BAZ . \\M_PI; } }',
                '<?php class Foo { public function bar($foo) { return PHP_SAPI . FOO_BAR_BAZ . M_PI; } }',
            ],
        ];
    }

    /**
     * @dataProvider provideFixWithConfiguredExcludeCases
     *
     * @param string      $expected
     * @param null|string $input
     */
    public function testFixWithConfiguredExclude($expected, $input = null)
    {
        $this->fixer->configure([
            'exclude' => [
                'M_PI',
            ],
        ]);

        $this->doTest($expected, $input);
    }

    /**
     * @return array
     */
    public function provideFixWithConfiguredExcludeCases()
    {
        return [
            [
                '<?php echo \\PHP_SAPI . M_PI;',
                '<?php echo PHP_SAPI . M_PI;',
            ],
            [
                '<?php class Foo { public function bar($foo) { return \\PHP_SAPI . M_PI; } }',
                '<?php class Foo { public function bar($foo) { return PHP_SAPI . M_PI; } }',
            ],
        ];
    }

    public function testNullTrueFalseAreCaseInsensitive()
    {
        $this->fixer->configure([
            'fix_built_in' => false,
            'include' => [
                'null',
                'false',
                'M_PI',
                'M_pi',
            ],
            'exclude' => [],
        ]);

        $expected = <<<'EOT'
<?php
var_dump(
    \null,
    \NULL,
    \Null,
    \nUlL,
    \false,
    \FALSE,
    true,
    TRUE,
    \M_PI,
    \M_pi,
    m_pi,
    m_PI
);
EOT;

        $input = <<<'EOT'
<?php
var_dump(
    null,
    NULL,
    Null,
    nUlL,
    false,
    FALSE,
    true,
    TRUE,
    M_PI,
    M_pi,
    m_pi,
    m_PI
);
EOT;

        $this->doTest($expected, $input);
    }

    public function testDoNotIncludeUserConstantsUnlessExplicitlyListed()
    {
        $uniqueConstantName = uniqid(self::class);
        $uniqueConstantName = preg_replace('/\W+/', '_', $uniqueConstantName);
        $uniqueConstantName = strtoupper($uniqueConstantName);

        $dontFixMe = 'DONTFIXME_'.$uniqueConstantName;
        $fixMe = 'FIXME_'.$uniqueConstantName;

        \define($dontFixMe, 1);
        \define($fixMe, 1);

        $this->fixer->configure([
            'fix_built_in' => true,
            'include' => [
                $fixMe,
            ],
            'exclude' => [],
        ]);

        $expected = <<<EOT
<?php
var_dump(
    \\null,
    ${dontFixMe},
    \\${fixMe}
);
EOT;

        $input = <<<EOT
<?php
var_dump(
    null,
    ${dontFixMe},
    ${fixMe}
);
EOT;

        $this->doTest($expected, $input);
    }

    public function testDoNotFixImportedConstants()
    {
        $this->fixer->configure([
            'fix_built_in' => false,
            'include' => [
                'M_PI',
                'M_EULER',
            ],
            'exclude' => [],
        ]);

        $expected = <<<'EOT'
<?php

namespace Foo;

use const M_EULER;

var_dump(
    null,
    \M_PI,
    M_EULER
);
EOT;

        $input = <<<'EOT'
<?php

namespace Foo;

use const M_EULER;

var_dump(
    null,
    M_PI,
    M_EULER
);
EOT;

        $this->doTest($expected, $input);
    }

    public function testFixScopedOnly()
    {
        $this->fixer->configure(['scope' => 'namespaced']);

        $expected = <<<'EOT'
<?php

namespace space1 {
    echo \PHP_VERSION;
}
namespace {
    echo PHP_VERSION;
}
EOT;

        $input = <<<'EOT'
<?php

namespace space1 {
    echo PHP_VERSION;
}
namespace {
    echo PHP_VERSION;
}
EOT;

        $this->doTest($expected, $input);
    }

    public function testFixScopedOnlyNoNamespace()
    {
        $this->fixer->configure(['scope' => 'namespaced']);

        $expected = <<<'EOT'
<?php

echo PHP_VERSION . PHP_EOL;
EOT;

        $this->doTest($expected);
    }
}
