<?php

namespace Psecio\SecureDotenv;

use Defuse\Crypto\Crypto as DefuseCrypto;
use Defuse\Crypto\Key as DefuseKey;

class Crypto
{
    /**
     * Current key value (either File or String version)
     *
     * @var \Psecio\SecureDotenv\KeySource
     */
    private $key;

    /**
     * Init the object and set up the key
     *
     * @param string $key The "key" value, either a string or a file path
     */
    public function __construct($key)
    {
        $this->setKey($this->createKey($key));
    }

    /**
     * Create the key instance based on either a string or file path
     *
     * @param string $key The "key" value, either a string or a file path
     * @return \Psecio\SecureDotenv\KeySource instance
     */
    public function createKey($key)
    {
        if (is_file($key)) {
            $key = new KeySource\KeyFile($key);
        } elseif (is_string($key)) {
            $key = new KeySource\KeyString($key);
        } else {
            throw new \InvalidArgumentException('Could not create key from value provided.');
        }

        return $key;
    }

    /**
     * Set the currekt key instance
     *
     * @param KeySource $key instance
     */
    public function setKey(KeySource $key)
    {
        $this->key = $key;
    }

    /**
     * Return the current key instance
     *
     * @return \Psecio\SecureDotenv\KeySource instance
     */
    public function getKey()
    {
        return $this->key;
    }

    /**
     * Encrypt the value provided with the current key and the Defuse library
     *
     * @param string $value Value to encrypt
     * @return string Ciphertext (encrypted) value
     */
    public function encrypt($value)
    {
        // Get the key contents, no sense in keeping it in memory for too long
        $keyAscii = trim($this->key->getContent());
        return DefuseCrypto::encrypt($value, DefuseKey::loadFromAsciiSafeString($keyAscii));
    }

    /**
     * Decrypt the ciphertext value provided
     * This method also catches values that may not be encrypted
     * and returns them normally
     *
     * @param string $value Ciphertext (encrypted) string
     * @return mixed The value if it could be decrypted, otherwse null
     */
    public function decrypt($value)
    {
        try {
            $keyAscii = trim($this->key->getContent());
            $value = DefuseCrypto::decrypt($value, DefuseKey::loadFromAsciiSafeString($keyAscii));

            return $value;
        } catch (\Defuse\Crypto\Exception\CryptoException $e) {
            // The value probably wasn't encrypted, move along...
            return null;
        }
    }
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NzMxNzUyODcyMjI4NzQxNyAyOTc1MDQxNzM1MTk1NjUyIDg4Nzk1NDQ5MzczOTY3ODc=