Gazelle/sections/api/userhistory/post_history.php

<?php
#declare(strict_types=1);

# todo: Go through line by line
function error_out($reason = '')
{
    $error = array('status' => 'failure');
    if ($reason !== '') {
        $error['reason'] = $reason;
    }
    echo $error;
    error();
}

if (!empty($LoggedUser['DisableForums'])) {
    error_out('You do not have access to the forums!');
}

$UserID = empty($_GET['userid']) ? $LoggedUser['ID'] : $_GET['userid'];
if (!is_number($UserID)) {
    error_out('User does not exist!');
}

if (isset($LoggedUser['PostsPerPage'])) {
    $PerPage = $LoggedUser['PostsPerPage'];
} else {
    $PerPage = POSTS_PER_PAGE;
}

list($Page, $Limit) = Format::page_limit($PerPage);

$UserInfo = Users::user_info($UserID);
extract(array_intersect_key($UserInfo, array_flip(array('Username', 'Enabled', 'Title', 'Avatar', 'Donor', 'Warned'))));

$ViewingOwn = ($UserID === $LoggedUser['ID']);
$ShowUnread = ($ViewingOwn && (!isset($_GET['showunread']) || !!$_GET['showunread']));
$ShowGrouped = ($ViewingOwn && (!isset($_GET['group']) || !!$_GET['group']));
if ($ShowGrouped) {
    $SQL = '
    SELECT
      SQL_CALC_FOUND_ROWS
      MAX(p.ID) AS ID
    FROM forums_posts AS p
      LEFT JOIN forums_topics AS t ON t.ID = p.TopicID';
    if ($ShowUnread) {
        $SQL .= '
      LEFT JOIN forums_last_read_topics AS l ON l.TopicID = t.ID AND l.UserID = '.$LoggedUser['ID'];
    }
    $SQL .= '
      LEFT JOIN forums AS f ON f.ID = t.ForumID
    WHERE p.AuthorID = '.$UserID.'
      AND ' . Forums::user_forums_sql();
    if ($ShowUnread) {
        $SQL .= '
      AND ((t.IsLocked = \'0\' OR t.IsSticky = \'1\')
      AND (l.PostID < t.LastPostID OR l.PostID IS NULL))';
    }
    $SQL .= "
    GROUP BY t.ID
    ORDER BY p.ID DESC
    LIMIT $Limit";
    $PostIDs = $DB->query($SQL);
    $DB->query('SELECT FOUND_ROWS()');
    list($Results) = $DB->next_record();

    if ($Results > $PerPage * ($Page - 1)) {
        $DB->set_query_id($PostIDs);
        $PostIDs = $DB->collect('ID');
        $SQL = "
      SELECT
        p.ID,
        p.AddedTime,
        p.Body,
        p.EditedUserID,
        p.EditedTime,
        ed.Username,
        p.TopicID,
        t.Title,
        t.LastPostID,
        l.PostID AS LastRead,
        t.IsLocked,
        t.IsSticky
      FROM forums_posts AS p
        LEFT JOIN users_main AS um ON um.ID = p.AuthorID
        LEFT JOIN users_info AS ui ON ui.UserID = p.AuthorID
        LEFT JOIN users_main AS ed ON ed.ID = p.EditedUserID
        JOIN forums_topics AS t ON t.ID = p.TopicID
        JOIN forums AS f ON f.ID = t.ForumID
        LEFT JOIN forums_last_read_topics AS l ON l.UserID = $UserID AND l.TopicID = t.ID
      WHERE p.ID IN (".implode(',', $PostIDs).')
      ORDER BY p.ID DESC';
        $Posts = $DB->query($SQL);
    }
} else {
    $SQL = '
    SELECT
      SQL_CALC_FOUND_ROWS';
    if ($ShowGrouped) {
        $SQL .= '
      *
    FROM (
      SELECT';
    }
    $SQL .= '
        p.ID,
        p.AddedTime,
        p.Body,
        p.EditedUserID,
        p.EditedTime,
        ed.Username,
        p.TopicID,
        t.Title,
        t.LastPostID,';
    if ($UserID === $LoggedUser['ID']) {
        $SQL .= '
        l.PostID AS LastRead,';
    }
    $SQL .= "
        t.IsLocked,
        t.IsSticky
      FROM forums_posts AS p
        LEFT JOIN users_main AS um ON um.ID = p.AuthorID
        LEFT JOIN users_info AS ui ON ui.UserID = p.AuthorID
        LEFT JOIN users_main AS ed ON ed.ID = p.EditedUserID
        JOIN forums_topics AS t ON t.ID = p.TopicID
        JOIN forums AS f ON f.ID = t.ForumID
        LEFT JOIN forums_last_read_topics AS l ON l.UserID = $UserID AND l.TopicID = t.ID
      WHERE p.AuthorID = $UserID
        AND " . Forums::user_forums_sql();

    if ($ShowUnread) {
        $SQL .= '
        AND ((t.IsLocked = \'0\' OR t.IsSticky = \'1\')
          AND (l.PostID < t.LastPostID OR l.PostID IS NULL)
        ) ';
    }

    $SQL .= '
      ORDER BY p.ID DESC';

    if ($ShowGrouped) {
        $SQL .= '
    ) AS sub
    GROUP BY TopicID
    ORDER BY ID DESC';
    }

    $SQL .= "
    LIMIT $Limit";
    $Posts = $DB->query($SQL);

    $DB->query('SELECT FOUND_ROWS()');
    list($Results) = $DB->next_record();

    $DB->set_query_id($Posts);
}

$JsonResults = [];
while (list($PostID, $AddedTime, $Body, $EditedUserID, $EditedTime, $EditedUsername, $TopicID, $ThreadTitle, $LastPostID, $LastRead, $Locked, $Sticky) = $DB->next_record()) {
    $JsonResults[] = array(
    'postId' => (int)$PostID,
    'topicId' => (int)$TopicID,
    'threadTitle' => $ThreadTitle,
    'lastPostId' => (int)$LastPostID,
    'lastRead' => (int)$LastRead,
    'locked' => $Locked === '1',
    'sticky' => $Sticky === '1',
    'addedTime' => $AddedTime,
    'body' => Text::full_format($Body),
    'bbbody' => $Body,
    'editedUserId' => (int)$EditedUserID,
    'editedTime' => $EditedTime,
    'editedUsername' => $EditedUsername
    );
}

echo json_encode(
    array(
    'status' => 'success',
    'response' => array(
      'currentPage' => (int)$Page,
      'pages' => ceil($Results / $PerPage),
      'threads' => $JsonResults
      )
    )
);