<?php

namespace Tightenco\Collect\Tests\Support;

use PHPUnit\Framework\TestCase;
use Tightenco\Collect\Support\Traits\Macroable;

class SupportMacroableTest extends TestCase
{
    private $macroable;

    public function setUp()
    {
        $this->macroable = $this->createObjectForTrait();
    }

    private function createObjectForTrait()
    {
        return new EmptyMacroable;
    }

    public function testRegisterMacro()
    {
        $macroable = $this->macroable;
        $macroable::macro(__CLASS__, function () {
            return 'Taylor';
        });
        $this->assertEquals('Taylor', $macroable::{__CLASS__}());
    }

    public function testRegisterMacroAndCallWithoutStatic()
    {
        $macroable = $this->macroable;
        $macroable::macro(__CLASS__, function () {
            return 'Taylor';
        });
        $this->assertEquals('Taylor', $macroable->{__CLASS__}());
    }

    public function testWhenCallingMacroClosureIsBoundToObject()
    {
        TestMacroable::macro('tryInstance', function () {
            return $this->protectedVariable;
        });
        TestMacroable::macro('tryStatic', function () {
            return static::getProtectedStatic();
        });
        $instance = new TestMacroable;

        $result = $instance->tryInstance();
        $this->assertEquals('instance', $result);

        $result = TestMacroable::tryStatic();
        $this->assertEquals('static', $result);
    }

    public function testClassBasedMacros()
    {
        TestMacroable::mixin(new TestMixin);
        $instance = new TestMacroable;
        $this->assertEquals('instance-Adam', $instance->methodOne('Adam'));
    }
}

class EmptyMacroable
{
    use Macroable;
}

class TestMacroable
{
    use Macroable;

    protected $protectedVariable = 'instance';

    protected static function getProtectedStatic()
    {
        return 'static';
    }
}

class TestMixin
{
    public function methodOne()
    {
        return function ($value) {
            return $this->methodTwo($value);
        };
    }

    protected function methodTwo()
    {
        return function ($value) {
            return $this->protectedVariable.'-'.$value;
        };
    }
}