<?php

function array_replace_keys(array $array, array $keys, $filter=false)
{
    $newArray = array();
    foreach($array as $key => $value) {
        if (isset($keys[$key])) {
            $newArray[$keys[$key]] = $value;
        } elseif (!$filter) {
            $newArray[$key] = $value;
        }
    }
    return $newArray;
}

function decode_input(string $textFile, array $mfArray)
{
	$topArray = explode("\n\n", $textFile);
	$jsonArray = json_decode($topArray[0], true);
	$jsonArray["content"] = $topArray[1];
	$newArray = array();
	foreach ($jsonArray as $key => $value) {
		if (!is_array($value)) {
			$value = [$value];
		}
		$newArray[$key] = $value;
	}
	$newArray = array_replace_keys($newArray, $mfArray, false);
	return $newArray;
}

function recode_output(array $array, array $mfArray)
{
	$postArray = array();
	$singles = array("name", "published", "slug", "content");
	foreach ($array as $key => $value) {
		if (in_array($key, $singles)) {
			$value = $value[0];
		}
		$postArray[$key] = $value;
	}
	$postArray = array_replace_keys($postArray, $mfArray, false);
	return $postArray;
}

$mfArray = array(
	"date" => "published",
	"tags" => "category",
	"replyto" => "in-reply-to",
	"link" => "bookmark-of",
	"title" => "name"
);