<?php

namespace ReviewX\Noodlehaus\Parser;

use ReviewX\Noodlehaus\Exception\ParseException;
/**
 * JSON parser
 *
 * @package    Config
 * @author     Jesus A. Domingo <jesus.domingo@gmail.com>
 * @author     Hassan Khan <contact@hassankhan.me>
 * @author     Filip Š <projects@filips.si>
 * @link       https://github.com/noodlehaus/config
 * @license    MIT
 */
class Json implements ParserInterface
{
    /**
     * {@inheritDoc}
     * Parses an JSON file as an array
     *
     * @throws ParseException If there is an error parsing the JSON file
     */
    public function parseFile($filename)
    {
        $data = \json_decode(\file_get_contents($filename), \true);
        return (array) $this->parse($data, $filename);
    }
    /**
     * {@inheritDoc}
     * Parses an JSON string as an array
     *
     * @throws ParseException If there is an error parsing the JSON string
     */
    public function parseString($config)
    {
        $data = \json_decode($config, \true);
        return (array) $this->parse($data);
    }
    /**
     * Completes parsing of JSON data
     *
     * @param  array  $data
     * @param  string $filename
     * @return array|null
     *
     * @throws ParseException If there is an error parsing the JSON data
     */
    protected function parse($data = null, $filename = null)
    {
        if (\json_last_error() !== \JSON_ERROR_NONE) {
            $error_message = 'Syntax error';
            if (\function_exists('json_last_error_msg')) {
                $error_message = \json_last_error_msg();
            }
            $error = ['message' => $error_message, 'type' => \json_last_error(), 'file' => $filename];
            throw new ParseException($error);
        }
        return $data;
    }
    /**
     * {@inheritDoc}
     */
    public static function getSupportedExtensions()
    {
        return ['json'];
    }
}
