<?php

use mystic\forum\orm\Topic;
use mystic\forum\orm\TopicLogMessage;
use mystic\forum\orm\User;
use mystic\forum\orm\UserPermissions;
use mystic\forum\utils\RequestUtils;

$topicId = $_POST["topic"] ?? null;
if ($topicId === null) {
    http_response_code(400);
    msg_error(__("Missing topic id"));
    exit;
}
RequestUtils::setFormErrorDestination($dest = "./?_action=viewtopic&topic=" . urlencode($topicId));
$dest = "Location: $dest";

if (!$currentUser) {
    http_response_code(403);
    msg_error(__("You need to be logged in to lock topics!"));
    exit;
}

$formId = "locktopic";
$locked = RequestUtils::getRequiredField("locked", $formId);
if ($locked === "true") {
    $locked = true;
} elseif ($locked === "false") {
    $locked = false;
} else RequestUtils::triggerFormError("Invalid value", $formId);

$topic = new Topic();
$topic->id = $topicId;

if (!$db->fetch($topic)) {
    http_response_code(404);
    msg_error(__("No topic exists with this id"));
    exit;
}

$topicAuthor = new User();
$topicAuthor->id = $topic->createdBy;

if (!$db->fetch($topicAuthor))
    $topicAuthor = null;

$canEdit = ($currentUser->id === $topicAuthor?->id && $topicAuthor?->hasPermission(UserPermissions::EDIT_OWN_TOPIC))
        || ($currentUser->hasPermission(UserPermissions::EDIT_OTHER_TOPIC));

if (!$canEdit) {
    http_response_code(403);
    msg_error(__("You don't have permission to lock or unlock this topic"));
    exit;
}

$topic->isLocked = $locked;

$log = new TopicLogMessage();
$log->id = $db->generateId();
$log->topicId = $topic->id;
$log->authorId = $currentUser->id;
$log->params = [];
$log->type = $locked ? TopicLogMessage::LOCKED : TopicLogMessage::UNLOCKED;
$log->postDate = new \DateTimeImmutable();

$db->insert($log);

if (!$db->update($topic)) {
    http_response_code(500);
    msg_error(__("Failed to lock or unlock topic"));
    exit;
}

header($dest);