<?php

declare(strict_types=1);

/*
 * 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\ControlStructure;

use PhpCsFixer\ConfigurationException\InvalidFixerConfigurationException;
use PhpCsFixer\Tests\Test\AbstractFixerTestCase;
use PhpCsFixer\WhitespacesFixerConfig;

/**
 * @internal
 *
 * @covers \PhpCsFixer\Fixer\ControlStructure\NoBreakCommentFixer
 */
final class NoBreakCommentFixerTest extends AbstractFixerTestCase
{
    /**
     * @dataProvider provideFixCases
     */
    public function testFix(string $expected, ?string $input = null): void
    {
        $this->doTest($expected, $input);
    }

    /**
     * @dataProvider provideFixCases
     */
    public function testFixWithExplicitDefaultConfiguration(string $expected, ?string $input = null): void
    {
        $this->fixer->configure([
            'comment_text' => 'no break',
        ]);

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

    public static function provideFixCases(): iterable
    {
        yield [
            '<?php
switch ($foo) {
    case 1:
        foo();
        // no break
    case 2:
        bar();
        // no break
    default:
        baz();
}',
            '<?php
switch ($foo) {
    case 1:
        foo();
    case 2:
        bar();
    default:
        baz();
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1:

        foo();

        // no break
    case 2:

        bar();

        // no break
    default:

        baz();
}',
            '<?php
switch ($foo) {
    case 1:

        foo();

    case 2:

        bar();

    default:

        baz();
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1:
        foo();
        // no break
    case 2:
        bar();
        // no break
    default:
        baz();
}',
            '<?php
switch ($foo) {
    case 1:
        foo(); // no break
    case 2:
        bar(); // no break
    default:
        baz();
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1;
        foo();
        // no break
    case 2;
        bar();
        // no break
    default;
        baz();
}',
            '<?php
switch ($foo) {
    case 1;
        foo();
    case 2;
        bar();
    default;
        baz();
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1:
        foo();
        // foo
        // no break
    case 2:
        bar();
}',
            '<?php
switch ($foo) {
    case 1:
        foo();
        // foo
    case 2:
        bar();
}',
        ];

        yield [
            '<?php
switch ($foo) { case 1: foo();
// no break
case 2: bar(); }',
            '<?php
switch ($foo) { case 1: foo(); case 2: bar(); }',
        ];

        yield [
            '<?php
switch ($foo) { case 1: foo();
// no break
case 2: bar(); }',
            '<?php
switch ($foo) { case 1: foo();case 2: bar(); }',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1;
        foreach ($bar as $baz) {
            break;
        }
        // no break
    case 2;
        bar();
}',
            '<?php
switch ($foo) {
    case 1;
        foreach ($bar as $baz) {
            break;
        }
    case 2;
        bar();
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1;
        for ($i = 0; $i < 1; ++$i) {
            break;
        }
        // no break
    case 2;
        bar();
}',
            '<?php
switch ($foo) {
    case 1;
        for ($i = 0; $i < 1; ++$i) {
            break;
        }
    case 2;
        bar();
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1;
        foreach ($bar as $baz) {
            break;
        }
        // no break
    case 2;
        bar();
}',
            '<?php
switch ($foo) {
    case 1;
        foreach ($bar as $baz) {
            break;
        }
    case 2;
        bar();
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1;
        if ($foo) {
            break;
        }
        // no break
    case 2;
        bar();
}',
            '<?php
switch ($foo) {
    case 1;
        if ($foo) {
            break;
        }
    case 2;
        bar();
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1;
        do {
            break;
        } while ($bar);
        // no break
    case 2;
        bar();
}',
            '<?php
switch ($foo) {
    case 1;
        do {
            break;
        } while ($bar);
    case 2;
        bar();
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1;
        $foo = function ($bar) {
            foreach ($bar as $baz) {
                break;
            }
        };
        // no break
    case 2;
        bar();
}',
            '<?php
switch ($foo) {
    case 1;
        $foo = function ($bar) {
            foreach ($bar as $baz) {
                break;
            }
        };
    case 2;
        bar();
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1:
        switch ($bar) {
            case 1:
                foo();
                // no break
            case 2:
                bar();
        }
        break;
    case 2:
        switch ($bar) {
            case 1:
                bar();
                // no break
            case 2:
                foo();
        }
}',
            '<?php
switch ($foo) {
    case 1:
        switch ($bar) {
            case 1:
                foo();
            case 2:
                bar();
        }
        break;
    case 2:
        switch ($bar) {
            case 1:
                bar();
            case 2:
                foo();
        }
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1:
        switch ($bar):
            case 1:
                foo();
                // no break
            case 2:
                bar();
        endswitch;
        break;
    case 2:
        switch ($bar):
            case 1:
                bar();
                // no break
            case 2:
                foo();
        endswitch;
}',
            '<?php
switch ($foo) {
    case 1:
        switch ($bar):
            case 1:
                foo();
            case 2:
                bar();
        endswitch;
        break;
    case 2:
        switch ($bar):
            case 1:
                bar();
            case 2:
                foo();
        endswitch;
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1:
        foo();
        continue;
    case 2:
        bar();
        continue;
    default:
        baz();
}',
            '<?php
switch ($foo) {
    case 1:
        foo();
        // no break
        continue;
    case 2:
        bar();
        // no break
        continue;
    default:
        baz();
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1:

        return foo();


    case 2:

        return bar();


    default:

        return baz();
}',
            '<?php
switch ($foo) {
    case 1:

        return foo();

        // no break

    case 2:

        return bar();

        // no break

    default:

        return baz();
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1:
        return foo();
    case 2:
        return bar();
    default:
        return baz();
}',
            '<?php
switch ($foo) {
    case 1:
        // no break
        return foo();
    case 2:
        // no break
        return bar();
    default:
        return baz();
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1:
        foo();
        break;
    case 2:
        bar();
        break;
    default:
        baz();
}',
            '<?php
switch ($foo) {
    case 1:
        foo();
        // no break
        break;
    case 2:
        bar();
        // no break
        break;
    default:
        baz();
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1:
        foo();
        break;
    case 2:
        bar();
        break;
    case 21:
        bar();
        break;
    case 22:
        bar();
        break;
    case 23:
        bar();
        break;
    case 24:
        bar();
        break;
    case 3:
        baz();
        break;
    default:
        qux();
}',
            '<?php
switch ($foo) {
    case 1:
        foo();
        # no break
        break;
    case 2:
        bar();
        /* no break */
        break;
    case 21:
        bar();
        /*no break*/
        break;
    case 22:
        bar();
        /*     no break    */
        break;
    case 23:
        bar();
        /*no break    */
        break;
    case 24:
        bar();
        /*  no break*/
        break;
    case 3:
        baz();
        /** no break */
        break;
    default:
        qux();
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1:
    case 2:
        bar();
        break;
    default:
        baz();
}',
            '<?php
switch ($foo) {
    case 1:
        // no break
    case 2:
        bar();
        // no break
        break;
    default:
        baz();
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1:
        foo();
}',
            '<?php
switch ($foo) {
    case 1:
        foo();
        // no break
}',
        ];

        yield [
            '<?php
switch ($foo) {
    default:
        foo();
}',
            '<?php
switch ($foo) {
    default:
        foo();
        // no break
}',
        ];

        yield [
            '<?php switch ($foo) { case 1: switch ($bar) { case 1: switch ($baz) { case 1: $foo = 1;
// no break
case 2: $foo = 2; }
// no break
case 2: switch ($baz) { case 1: $foo = 3;
// no break
case 2: $foo = 4; } }
// no break
case 2: switch ($bar) { case 1: switch ($baz) { case 1: $foo = 5;
// no break
case 2: $foo = 6; }
// no break
case 2: switch ($baz) { case 1: $foo = 7;
// no break
case 2: $foo = 8; } } }',
            '<?php switch ($foo) { case 1: switch ($bar) { case 1: switch ($baz) { case 1: $foo = 1; case 2: $foo = 2; } case 2: switch ($baz) { case 1: $foo = 3; case 2: $foo = 4; } } case 2: switch ($bar) { case 1: switch ($baz) { case 1: $foo = 5; case 2: $foo = 6; } case 2: switch ($baz) { case 1: $foo = 7; case 2: $foo = 8; } } }',
        ];

        yield [
            '<?php
switch ($foo):
    case 1:
        foo();
        // no break
    case 2:
        bar();
endswitch;',
            '<?php
switch ($foo):
    case 1:
        foo();
    case 2:
        bar();
        // no break
endswitch;',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1:
        ?>foo<?php
        // no break
    case 2:
        ?>bar<?php
        break;
}',
            '<?php
switch ($foo) {
    case 1:
        ?>foo<?php
    case 2:
        ?>bar<?php
        // no break
        break;
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1:
        ?>foo<?php

        // no break
    case 2:
        ?>bar<?php

        break;
}',
            '<?php
switch ($foo) {
    case 1:
        ?>foo<?php

    case 2:
        ?>bar<?php

        // no break
        break;
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1:
        ?>foo<?php // foo
        // no break
    case 2:
        ?>bar<?php // bar
        break;
}',
            '<?php
switch ($foo) {
    case 1:
        ?>foo<?php // foo
    case 2:
        ?>bar<?php // bar
        // no break
        break;
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1:
        foo();
        // no break
    case 2:
        bar();
        // no break
    default:
        baz();
}',
            '<?php
switch ($foo) {
    case 1:
        // no break
        foo();
    case 2:
        // no break
        bar();
    default:
        baz();
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1:
        die;
    case 2:
        exit;
    default:
        die;
}',
            '<?php
switch ($foo) {
    case 1:
        // no break
        die;
    case 2:
        // no break
        exit;
    default:
        die;
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1: {
        throw new \Exception();
    }
    case 2:
        ?>
        <?php
        throw new \Exception();
    default:
        throw new \Exception();
}',
            '<?php
switch ($foo) {
    case 1: {
        // no break
        throw new \Exception();
    }
    case 2:
        ?>
        <?php
        // no break
        throw new \Exception();
    default:
        throw new \Exception();
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1:
        goto a;
    case 2:
        goto a;
    default:
        goto a;
}

a:
echo \'foo\';',
            '<?php
switch ($foo) {
    case 1:
        // no break
        goto a;
    case 2:
        // no break
        goto a;
    default:
        goto a;
}

a:
echo \'foo\';',
        ];

        yield [
            '<?php
switch ($foo) {
    case "bar":
        if (1) {
        } else {
        }

        $aaa = new Bar();
        break;
    default:
        $aaa = new Baz();
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1:
?>
<?php
// no break
    default:
?>
<?php
}',
            '<?php
switch ($foo) {
    case 1:
?>
<?php
    default:
?>
<?php
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1:
?>
<?php
// no break
default:
?>
<?php }',
            '<?php
switch ($foo) {
    case 1:
?>
<?php default:
?>
<?php }',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1:
        foo();
        // no break
    case 2:
        bar();
}',
            '<?php
switch ($foo) {
    case 1:
        foo();
        // No break
    case 2:
        bar();
}',
        ];

        yield [
            '<?php
switch ($a) {
    case 1:
        throw new \Exception("");
    case 2;
        throw new \Exception("");
    case 3:
        throw new \Exception("");
    case 4;
        throw new \Exception("");
    case 5:
        throw new \Exception("");
    case 6;
        throw new \Exception("");
}
                ',
        ];

        yield [
            '<?php
switch ($f) {
    case 1:
        if ($a) {
            return "";
        }

        throw new $f();
    case Z:
        break;
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1;
        $foo = new class {
            public function foo($bar)
            {
                foreach ($bar as $baz) {
                    break;
                }
            }
        };
        // no break
    case 2;
        bar();
}',
            '<?php
switch ($foo) {
    case 1;
        $foo = new class {
            public function foo($bar)
            {
                foreach ($bar as $baz) {
                    break;
                }
            }
        };
    case 2;
        bar();
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 1;
        $foo = new class(1) {
            public function foo($bar)
            {
                foreach ($bar as $baz) {
                    break;
                }
            }
        };
        // no break
    case 2;
        bar();
}',
            '<?php
switch ($foo) {
    case 1;
        $foo = new class(1) {
            public function foo($bar)
            {
                foreach ($bar as $baz) {
                    break;
                }
            }
        };
    case 2;
        bar();
}',
        ];

        yield [
            '<?php
switch($a) {
    case 1:
        $a = function () { throw new \Exception(""); };
        // no break
    case 2:
        $a = new class(){
            public function foo () { throw new \Exception(""); }
        };
        // no break
    case 3:
        echo 5;
        // no break
    default:
        echo 1;
}
                ',
            '<?php
switch($a) {
    case 1:
        $a = function () { throw new \Exception(""); };
    case 2:
        $a = new class(){
            public function foo () { throw new \Exception(""); }
        };
    case 3:
        echo 5;
    default:
        echo 1;
}
                ',
        ];

        yield [
            '<?php
switch ($foo) {
    case 10:
        echo 1;
        /* no break because of some more details stated here */
    case 22:
        break;
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 10:
        echo 1;
        # no break because of some more details stated here */
    case 22:
        break;
}',
        ];

        yield [
            '<?php
switch ($foo) {
    case 100:
        echo 10;
        /* no breaking windows please */
        // no break
    case 220:
        break;
}',
            '<?php
switch ($foo) {
    case 100:
        echo 10;
        /* no breaking windows please */
    case 220:
        break;
}',
        ];
    }

    /**
     * @dataProvider provideFixWithDifferentCommentTextCases
     */
    public function testFixWithDifferentCommentText(string $expected, ?string $input = null): void
    {
        $this->fixer->configure([
            'comment_text' => 'fall-through case!',
        ]);
        $this->doTest($expected, $input);
    }

    public static function provideFixWithDifferentCommentTextCases(): iterable
    {
        $cases = self::provideFixCases();

        $replaceCommentText = static function (string $php): string {
            return strtr($php, [
                'No break' => 'Fall-through case!',
                'no break' => 'fall-through case!',
            ]);
        };

        foreach ($cases as $case) {
            $case[0] = $replaceCommentText($case[0]);

            if (isset($case[1])) {
                $case[1] = $replaceCommentText($case[1]);
            }

            yield $case;
        }

        yield [
            '<?php
switch ($foo) {
    case 1:
        foo();
        // no break
        // fall-through case!
    case 2:
        bar();
        // no break
        // fall-through case!
    default:
        baz();
}',
            '<?php
switch ($foo) {
    case 1:
        foo();
        // no break
    case 2:
        bar();
        // no break
    default:
        baz();
}',
        ];
    }

    /**
     * @dataProvider provideFixWithDifferentLineEndingCases
     */
    public function testFixWithDifferentLineEnding(string $expected, ?string $input = null): void
    {
        $this->fixer->setWhitespacesConfig(new WhitespacesFixerConfig('    ', "\r\n"));
        $this->doTest($expected, $input);
    }

    public static function provideFixWithDifferentLineEndingCases(): iterable
    {
        foreach (self::provideFixCases() as $case) {
            $case[0] = str_replace("\n", "\r\n", $case[0]);

            if (isset($case[1])) {
                $case[1] = str_replace("\n", "\r\n", $case[1]);
            }

            yield $case;
        }
    }

    public function testFixWithCommentTextWithSpecialRegexpCharacters(): void
    {
        $this->fixer->configure([
            'comment_text' => '~***(//[No break here.]\\\\)***~',
        ]);

        $this->doTest(
            '<?php
switch ($foo) {
    case 1:
        foo();
        // ~***(//[No break here.]\\\\)***~
    case 2:
        bar();
        // ~***(//[No break here.]\\\\)***~
    default:
        baz();
}',
            '<?php
switch ($foo) {
    case 1:
        foo();
        // ~***(//[No break here.]\\\\)***~
    case 2:
        bar();
    default:
        baz();
}'
        );
    }

    public function testFixWithCommentTextWithTrailingSpaces(): void
    {
        $this->fixer->configure([
            'comment_text' => 'no break     ',
        ]);

        $this->doTest(
            '<?php
switch ($foo) {
    case 1:
        foo();
        // no break
    default:
        baz();
}',
            '<?php
switch ($foo) {
    case 1:
        foo();
    default:
        baz();
}'
        );
    }

    /**
     * @dataProvider provideFixWithCommentTextContainingNewLinesCases
     */
    public function testFixWithCommentTextContainingNewLines(string $text): void
    {
        $this->expectException(InvalidFixerConfigurationException::class);
        $this->expectExceptionMessageMatches('/^\[no_break_comment\] Invalid configuration: The comment text must not contain new lines\.$/');

        $this->fixer->configure([
            'comment_text' => $text,
        ]);
    }

    public static function provideFixWithCommentTextContainingNewLinesCases(): iterable
    {
        yield ["No\nbreak"];

        yield ["No\r\nbreak"];

        yield ["No\rbreak"];
    }

    public function testConfigureWithInvalidOptions(): void
    {
        $this->expectException(InvalidFixerConfigurationException::class);
        $this->expectExceptionMessageMatches('/^\[no_break_comment\] Invalid configuration: The option "foo" does not exist\. Defined options are: "comment_text"\.$/');

        $this->fixer->configure(['foo' => true]);
    }

    /**
     * @dataProvider provideFix80Cases
     *
     * @requires PHP 8.0
     */
    public function testFix80(string $expected, ?string $input = null): void
    {
        $this->doTest($expected, $input);
    }

    public static function provideFix80Cases(): iterable
    {
        yield [
            '<?php
                switch ($foo) {
                    case 1:
                        foo() ?? throw new \Exception();
                        // no break
                    case 2:
                        $a = $condition and throw new Exception();
                        // no break
                    case 3:
                        $callable = fn() => throw new Exception();
                        // no break
                    case 4:
                        $value = $falsableValue ?: throw new InvalidArgumentException();
                        // no break
                    default:
                        echo "PHP8";
                }
            ',
            '<?php
                switch ($foo) {
                    case 1:
                        foo() ?? throw new \Exception();
                    case 2:
                        $a = $condition and throw new Exception();
                    case 3:
                        $callable = fn() => throw new Exception();
                    case 4:
                        $value = $falsableValue ?: throw new InvalidArgumentException();
                    default:
                        echo "PHP8";
                }
            ',
        ];

        yield [
            '<?php
                match ($foo) {
                    1 => "a",
                    default => "b"
                };
                match ($bar) {
                    2 => "c",
                    default => "d"
                };
                match ($baz) {
                    3 => "e",
                    default => "f"
                };
            ',
        ];

        yield 'switch with break and nested match' => [
            '<?php switch ($value) {
                case 1:
                    $x = match (true) {
                        default => 2
                    };
                    break;
                default:
                    $x = 3;
            }',
        ];

        yield 'switch without break and nested match' => [
            '<?php switch ($value) {
                case 1:
                    $x = match (true) {
                        default => 2
                    };
                    // no break
                default:
                    $x = 3;
            }',
            '<?php switch ($value) {
                case 1:
                    $x = match (true) {
                        default => 2
                    };
                default:
                    $x = 3;
            }',
        ];
    }

    /**
     * @dataProvider provideFix81Cases
     *
     * @requires PHP 8.1
     */
    public function testFix81(string $expected, ?string $input = null): void
    {
        $this->doTest($expected, $input);
    }

    public static function provideFix81Cases(): iterable
    {
        yield 'enums' => [
            '<?php
enum Suit {
    case Hearts;
    case Diamonds;
    case Clubs;
    case Spades;
}

enum UserStatus: string {
  case Pending = \'P\';
  case Active = \'A\';
  case Suspended = \'S\';
  case CanceledByUser = \'C\';
}

switch($a) { // pass the `is candidate` check
    case 1:
        echo 1;
        break;
}
',
        ];
    }
}
