<?php

use Env\Env;
use function Env\env;
use PHPUnit\Framework\TestCase;

class ConversionTest extends TestCase
{
    public static function dataProvider(): array
    {
        return array(
            array('', null, ''),
            array('false', null, false),
            array('FALSE', null, false),
            array('true', null, true),
            array('True', null, true),
            array('NULL', null, null),
            array('null', null, null),
            array('123', null, 123),
            array('123.4', null, '123.4'),
            array('"hello"', null, 'hello'),
            array("'hello'", null, 'hello'),
            array('false', 0, 'false'),
            array('FALSE', Env::CONVERT_INT, 'FALSE'),
            array('23', Env::CONVERT_INT, 23),
        );
    }

    /**
     * @dataProvider dataProvider
     */
    public function testConversions(string $value, ?int $options, $expected)
    {
        $result = Env::convert($value, $options);

        $this->assertSame($expected, $result);
    }

    public function testFunction()
    {
        putenv('FOO=123');

        $this->assertSame(123, env('FOO'));

        //Switch to $_ENV
        Env::$options |= Env::USE_ENV_ARRAY;

        $this->assertNull(env('FOO'));

        $_ENV['FOO'] = 456;

        $this->assertSame(456, env('FOO'));

        //Switch to $_SERVER
        Env::$options ^= Env::USE_ENV_ARRAY;
        Env::$options |= Env::USE_SERVER_ARRAY;

        $this->assertNull(env('FOO'));

        $_SERVER['FOO'] = 789;

        $this->assertSame(789, env('FOO'));

        //Switch to getenv again
        Env::$options ^= Env::USE_SERVER_ARRAY;

        $this->assertSame(123, env('FOO'));
    }

    public function testClass()
    {
        putenv('BAR=123');

        $this->assertSame(123, Env::get('BAR'));

        //Switch to $_ENV
        Env::$options |= Env::USE_ENV_ARRAY;

        $this->assertNull(Env::get('BAR'));

        $_ENV['BAR'] = 456;

        $this->assertSame(456, Env::get('BAR'));

        //Switch to $_SERVER
        Env::$options ^= Env::USE_ENV_ARRAY;
        Env::$options |= Env::USE_SERVER_ARRAY;

        $this->assertNull(Env::get('BAR'));

        $_SERVER['BAR'] = 789;

        $this->assertSame(789, Env::get('BAR'));
        
        //Switch to getenv again
        Env::$options ^= Env::USE_SERVER_ARRAY;

        $this->assertSame(123, Env::get('BAR'));
    }
}