<?php

namespace NoccyLabs\Hotfix\Runner;

use NoccyLabs\Hotfix\System\Facts;
use NoccyLabs\Hotfix\Hotfix\Hotfix;

/**
 * Run hotfixes written in PHP
 *
 *
 */
class PhpRunner implements RunnerInterface
{

    const PHP_STUB = "/../stubs/php.stub";

    protected $hotfix;

    protected $facts;

    public function prepare(Hotfix $hotfix, Facts $facts)
    {
        $this->hotfix = $hotfix;
        $this->facts = $facts;
    }

    public function apply()
    {
        $stub = file_get_contents(__DIR__.self::PHP_STUB);
        $body = $this->hotfix->getBody();
        $hash = $this->hotfix->getHash();

        $stub.= 'function fact($key) { ';
        $stub.= 'switch ($key) {';
        $facts = $this->facts->getFlat();
        foreach ($facts as $key=>$value) {
            $stub.= 'case "'.$key.'": return "'.$value.'";';
        }
        $stub.= '}}'.PHP_EOL;

        // Create temporary filename based on the hash of the hotfix filename
        $tmpfile = sys_get_temp_dir()."/hotfix_".$hash;
        file_put_contents($tmpfile, '<?php '.$stub."\n".$body."\n");

        // Execute the hotfix and clean up
        passthru("php {$tmpfile}");
        unlink($tmpfile);

    }

}