<?php
/* For licensing terms, see /license.txt */

/**
 * This script manages the display of forum threads in flat view
 * @copyright Julio Montoya <gugli100@gmail.com> UI Improvements + lots of bugfixes
 * @package chamilo.forum
 */

// Delete attachment file
if ((isset($_GET['action']) &&
    $_GET['action'] == 'delete_attach') &&
    isset($_GET['id_attach'])
) {
    delete_attachment(0, $_GET['id_attach']);
}

$sessionId = api_get_session_id();
$_user = api_get_user_info();
$userId = api_get_user_id();
$groupId = api_get_group_id();

$sortDirection = isset($_GET['posts_order']) && $_GET['posts_order'] === 'desc' ? 'DESC' : 'ASC';

if (isset($current_thread['thread_id'])) {
    $rows = getPosts($current_thread['thread_id'], $sortDirection);
    $increment = 0;
    $clean_forum_id = intval($_GET['forum']);
    $clean_thread_id = intval($_GET['thread']);

    $locked = api_resource_is_locked_by_gradebook(
        $clean_thread_id,
        LINK_FORUM_THREAD
    );

    $closedPost = null;

    if (!empty($rows)) {
        foreach ($rows as $row) {
            if ($row['user_id'] == '0') {
                $name = prepare4display($row['poster_name']);
            } else {
                $name = api_get_person_name($row['firstname'], $row['lastname']);
            }

            $username = sprintf(get_lang('LoginX'), $row['username']);

            if (($current_forum_category && $current_forum_category['locked'] == 0) &&
                $current_forum['locked'] == 0 &&
                $current_thread['locked'] == 0 ||
                api_is_allowed_to_edit(false, true)
            ) {
                if ($_user['user_id'] || ($current_forum['allow_anonymous'] == 1 && !$_user['user_id'])) {
                    if (!api_is_anonymous() && api_is_allowed_to_session_edit(false, true)) {

                        $buttonReply = Display::tag(
                            'a',
                            '<i class="fa fa-reply"></i> ' . get_lang('ReplyToMessage'),
                            array(
                                'href' => 'reply.php?' . api_get_cidreq()
                                    . "&forum=$clean_forum_id&thread=$clean_thread_id&post="
                                    . "{$row['post_id']}&action=replymessage&origin=$origin",
                                'class' => 'btn btn-primary'
                            )
                        );

                        $buttonQuote = Display::tag(
                            'a',
                            '<i class="fa fa-quote-left"></i> ' . get_lang('QuoteMessage'),
                            array(
                                'href' => 'reply.php?' . api_get_cidreq()
                                    . "&forum=$clean_forum_id&thread=$clean_thread_id"
                                    . "&post={$row['post_id']}&action=quote&origin=$origin",
                                'class' => 'btn btn-success'
                            )
                        );
                    }
                }
            } else {

                if (($current_forum_category && $current_forum_category['locked'] == 1)) {
                    $closedPost = Display::tag(
                        'div',
                        '<i class="fa fa-exclamation-triangle"></i> ' . get_lang('ForumcategoryLocked'),
                        array('class' => 'alert alert-warning post-closed')
                    );
                }
                if ($current_forum['locked'] == 1) {
                    $closedPost = Display::tag(
                        'div',
                        '<i class="fa fa-exclamation-triangle"></i> ' . get_lang('ForumLocked'),
                        array('class' => 'alert alert-warning post-closed')
                    );
                }
                if ($current_thread['locked'] == 1) {
                    $closedPost = Display::tag(
                        'div',
                        '<i class="fa fa-exclamation-triangle"></i> ' . get_lang('ThreadLocked'),
                        array('class' => 'alert alert-warning post-closed')
                    );
                }
            }

            $html = '';
            $html .= '<div class="panel panel-default forum-post">';
            $html .= '<div class="panel-body">';
            $html .= '<div class="row">';

            $html .= '<div class="col-md-2">';

            if ($origin != 'learnpath') {
                if (api_get_course_setting('allow_user_image_forum')) {
                    $html .= '<div class="thumbnail">' . display_user_image($row['user_id'], $name) . '</div>';
                }
                $html .= Display::tag(
                    'h4',
                    display_user_link($row['user_id'], $name),
                    array('class' => 'title-username')
                );
            } else {
                $html .= Display::tag(
                    'span',
                    $name,
                    array(
                        'title' => api_htmlentities($username, ENT_QUOTES)
                    )
                );
            }

            $html .= Display::tag(
                'p',
                api_convert_and_format_date($row['post_date']),
                array('class' => 'post-date')
            );

            // get attach id
            $attachment_list = get_attachment($row['post_id']);
            $id_attach = !empty($attachment_list) ? $attachment_list['iid'] : '';
            $iconEdit = '';
            // The user who posted it can edit his thread only if the course admin allowed
            // this in the properties of the forum
            // The course admin him/herself can do this off course always
            if (
                GroupManager::is_tutor_of_group($userId, $groupId) ||
                ($current_forum['allow_edit'] == 1 && $row['user_id'] == $_user['user_id']) ||
                (
                api_is_allowed_to_edit(false, true) &&
                !(api_is_course_coach() && $current_forum['session_id'] != $sessionId)
                )
            ) {
                if (api_is_allowed_to_session_edit(false, true)) {
                    if ($locked == false) {
                        $iconEdit .= "<a href=\"editpost.php?" . api_get_cidreq() . "&forum=" . $clean_forum_id
                            . "&thread=" . $clean_thread_id . "&post=" . $row['post_id'] . "&origin="
                            . $origin . "&edit=edition&id_attach=" . $id_attach . "\">"
                            . Display::return_icon('edit.png', get_lang('Edit'), array(), ICON_SIZE_SMALL) . "</a>";
                    }
                }
            }

            if ($origin != 'learnpath') {
                if (GroupManager::is_tutor_of_group($userId, $groupId) ||
                    api_is_allowed_to_edit(false, true) &&
                    !(api_is_course_coach() && $current_forum['session_id'] != $sessionId)
                ) {

                    if ($locked == false) {
                        $iconEdit .= "<a href=\"" . api_get_self() . "?" . api_get_cidreq() . "&forum="
                            . $clean_forum_id . "&thread=" . $clean_thread_id
                            . "&action=delete&content=post&id=" . $row['post_id'] . "&origin="
                            . $origin . "\" onclick=\"javascript:if(!confirm('"
                            . addslashes(api_htmlentities(get_lang('DeletePost'), ENT_QUOTES))
                            . "')) return false;\">"
                            . Display::return_icon('delete.png', get_lang('Delete'), array(), ICON_SIZE_SMALL)
                            . "</a>";
                    }
                }
                if (
                    api_is_allowed_to_edit(false, true) &&
                    !(api_is_course_coach() && $current_forum['session_id'] != $sessionId)
                ) {
                    $iconEdit .= return_visible_invisible_icon(
                        'post', $row['post_id'], $row['visible'], array(
                        'forum' => $clean_forum_id,
                        'thread' => $clean_thread_id,
                        'origin' => $origin,
                        )
                    );
                    $iconEdit .= "";
                    if ($increment > 0) {
                        $iconEdit .= "<a href=\"viewthread.php?" . api_get_cidreq() . "&forum=" . $clean_forum_id
                            . "&thread=" . $clean_thread_id . "&action=move&post=" . $row['post_id']
                            . "&origin=" . $origin . "\">"
                            . Display::return_icon('move.png', get_lang('MovePost'), array(), ICON_SIZE_SMALL)
                            . "</a>";
                    }
                }
            }

            $user_status = api_get_status_of_user_in_course(
                $row['user_id'], api_get_course_int_id()
            );

            $current_qualify_thread = showQualify(
                '1', $row['poster_id'], $_GET['thread']
            );

            if (
                (
                    $current_thread['thread_peer_qualify'] == 1 ||
                    api_is_allowed_to_edit(null, true)
                ) &&
                $current_thread['thread_qualify_max'] > 0 && $origin != 'learnpath'
            ) {
                $my_forum_id = $clean_forum_id;
                if (isset($_GET['gradebook'])) {
                    $info_thread = get_thread_information($clean_thread_id);
                    $my_forum_id = $info_thread['forum_id'];
                }

                $userCanEdit = $current_thread['thread_peer_qualify'] == 1 && $row['poster_id'] != $userId;
                if (api_is_allowed_to_edit(null, true)) {
                    $userCanEdit = true;
                }
                if ($increment > 0 && $locked == false && $userCanEdit) {
                    $iconEdit .= "<a href=\"forumqualify.php?" . api_get_cidreq() . "&forum=" . $my_forum_id
                        . "&thread=" . $clean_thread_id . "&action=list&post=" . $row['post_id']
                        . "&user=" . $row['poster_id'] . "&user_id=" . $row['poster_id']
                        . "&origin=" . $origin . "&idtextqualify=" . $current_qualify_thread . "\" >"
                        . Display::return_icon('quiz.gif', get_lang('Qualify'))
                        . "</a> ";
                }
            }
            if ($iconEdit != '') {
                $html .= '<div class="tools-icons">' . $iconEdit . '</div>';
            }

            $html .= $closedPost;
            $html .= '</div>';

            $html .= '<div class="col-md-10">';

            $titlePost = Display::tag(
                'h3', $row['post_title'],
                array('class' => 'forum_post_title')
            );
            $html .= Display::tag(
                'div', $titlePost,
                array('class' => 'post-header')
            );

            // see comments inside forumfunction.inc.php to lower filtering and allow more visual changes

            $html .= Display::tag(
                'div', $row['post_text'],
                array('class' => 'post-body')
            );
            $html .= '</div>';
            $html .= '</div>';

            $html .= '<div class="row">';
            $html .= '<div class="col-md-7">';

            // prepare the notification icon
            if (
                isset(
                    $whatsnew_post_info[$current_forum['forum_id']][$current_thread['thread_id']][$row['post_id']]
                ) &&
                !empty(
                    $whatsnew_post_info[$current_forum['forum_id']][$current_thread['thread_id']][$row['post_id']]
                ) &&
                !empty($whatsnew_post_info[$_GET['forum']][$row['thread_id']])
            ) {
                $post_image = Display::return_icon('forumpostnew.gif');
            } else {
                $post_image = Display::return_icon('forumpost.gif');
            }

            if ($row['post_notification'] == '1' && $row['poster_id'] == $_user['user_id']) {
                $post_image .= Display::return_icon('forumnotification.gif', get_lang('YouWillBeNotified'));
            }
            // The post title
            // The check if there is an attachment

            $attachment_list = getAllAttachment($row['post_id']);
            if (!empty($attachment_list) && is_array($attachment_list)) {
                foreach ($attachment_list as $attachment) {

                    $realname = $attachment['path'];
                    $user_filename = $attachment['filename'];

                    $html .= Display::return_icon('attachment.gif', get_lang('Attachment'));
                    $html .= '<a href="download.php?file=' . $realname . '"> ' . $user_filename . ' </a>';

                    if (($current_forum['allow_edit'] == 1 && $row['user_id'] == $_user['user_id']) ||
                        (api_is_allowed_to_edit(false, true) && !(api_is_course_coach() && $current_forum['session_id'] != $sessionId))
                    ) {
                        $html .= '&nbsp;&nbsp;<a href="' . api_get_self() . '?' . api_get_cidreq() . '&origin='
                            . Security::remove_XSS($_GET['origin']) . '&action=delete_attach&id_attach='
                            . $attachment['iid'] . '&forum=' . $clean_forum_id . '&thread=' . $clean_thread_id
                            . '" onclick="javascript:if(!confirm(\''
                            . addslashes(api_htmlentities(get_lang('ConfirmYourChoice'), ENT_QUOTES))
                            . '\')) return false;">'
                            . Display::return_icon('delete.png', get_lang('Delete'), array(), ICON_SIZE_SMALL)
                            . '</a><br />';
                    }
                    $html .= '<span class="forum_attach_comment" >' . $attachment['comment'] . '</span>';
                }
            }

            $html .= '</div>';
            $html .= '<div class="col-md-5 text-right">';
            $html .= $buttonReply . ' ' . $buttonQuote;
            $html .= '</div>';
            $html .= '</div>';

            // The post has been displayed => it can be removed from the what's new array
            unset($whatsnew_post_info[$current_forum['forum_id']][$current_thread['thread_id']][$row['post_id']]);
            unset($whatsnew_post_info[$current_forum['forum_id']][$current_thread['thread_id']]);
            unset($_SESSION['whatsnew_post_info'][$current_forum['forum_id']][$current_thread['thread_id']][$row['post_id']]);
            unset($_SESSION['whatsnew_post_info'][$current_forum['forum_id']][$current_thread['thread_id']]);

            $increment++;

            $html .= '</div>';
            $html .= '</div>';
            echo $html;
        }
    }
}
