<!--
Copyright (C) 2020 Yarmo Mackenbach

This program is free software: you can redistribute it and/or modify it under
the terms of the GNU Affero General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option)
any later version.

This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
details.

You should have received a copy of the GNU Affero General Public License along
with this program. If not, see <https://www.gnu.org/licenses/>.

Also add information on how to contact you by electronic and paper mail.

If your software can interact with users remotely through a computer network,
you should also make sure that it provides a way for users to get its source.
For example, if your program is a web application, its interface could display
a "Source" link that leads users to an archive of the code. There are many
ways you could offer source, and different solutions will be better for different
programs; see section 13 for the specific requirements.

You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary. For
more information on this, and how to apply and follow the GNU AGPL, see <https://www.gnu.org/licenses/>.
 -->
<?php

$fingerprint = urlencode($_GET["fp"]);
$user = urlencode($_GET["user"]);
$comment = urlencode($_GET["comment"]);

$url = "https://www.reddit.com/user/$user/comments/$comment.json";
$check = "\[Verifying my OpenPGP key: openpgp4fpr:$fingerprint";

$ch = curl_init();
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "GET");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_URL, $url);
$result = curl_exec($ch);
curl_close($ch);
$data = json_decode($result, true);

$response = array();
$response["verified"] = false;
$response["fingerprint"] = $fingerprint;
$response["user"] = $user;
$response["comment"] = $comment;

foreach ($data as $entry) {
    $entryData = $entry["data"]["children"];

    foreach ($entryData as $subEntry) {
        if (preg_match("/{$check}/i", $subEntry["data"]["selftext"])) {
            $response["verified"] = true;
        }
    }
}

echo json_encode($response);

?>