<?php
/**
 * Name: Impressum
 * Description: Addon to add contact information to the about page (/friendica)
 * Version: 1.3
 * Author: Tobias Diekershoff <https://f.diekershoff.de/profile/tobias>
 * License: 3-clause BSD license
 */

require_once('include/bbcode.php');
require_once('mod/proxy.php');

use Friendica\Core\Addon;
use Friendica\Core\Config;

function impressum_install() {
    Addon::registerHook('about_hook', 'addon/impressum/impressum.php', 'impressum_show');
    Addon::registerHook('page_end', 'addon/impressum/impressum.php', 'impressum_footer');
    logger("installed impressum Addon");
}

function impressum_uninstall() {
    Addon::unregisterHook('about_hook', 'addon/impressum/impressum.php', 'impressum_show');
    Addon::unregisterHook('page_end', 'addon/impressum/impressum.php', 'impressum_footer');
    logger("uninstalled impressum Addon");
}

function impressum_module() {
}
function impressum_content() {
    $a = get_app();
    goaway('friendica/');
}

function obfuscate_email ($s) {
    $s = str_replace('@','(at)',$s);
    $s = str_replace('.','(dot)',$s);
    return $s;
}
function impressum_footer($a, &$b) {
    $text = proxy_parse_html(bbcode(Config::get('impressum','footer_text'), true));
    if (! $text == '') {
        $a->page['htmlhead'] .= '<link rel="stylesheet" type="text/css" href="'.$a->get_baseurl().'/addon/impressum/impressum.css" media="all" />';
        $b .= '<div class="clear"></div>';
        $b .= '<div id="impressum_footer">'.$text.'</div>';
    }
}
function impressum_show($a,&$b) {
    $b .= '<h3>'.t('Impressum').'</h3>';
    $owner = Config::get('impressum', 'owner');
    $owner_profile = Config::get('impressum','ownerprofile');
    $postal = proxy_parse_html(bbcode(Config::get('impressum', 'postal'), true));
    $notes = proxy_parse_html(bbcode(Config::get('impressum', 'notes'), true));
    $email = obfuscate_email( Config::get('impressum','email') );
    if (strlen($owner)) {
        if (strlen($owner_profile)) {
            $tmp = '<a href="'.$owner_profile.'">'.$owner.'</a>';
        } else {
            $tmp = $owner;
        }
        if (strlen($email)) {
            $b .= '<p><strong>'.t('Site Owner').'</strong>: '. $tmp .'<br /><strong>'.t('Email Address').'</strong>: '.$email.'</p>';
        } else {
            $b .= '<p><strong>'.t('Site Owner').'</strong>: '. $tmp .'</p>';
        }
        if (strlen($postal)) {
            $b .= '<p><strong>'.t('Postal Address').'</strong><br />'. $postal .'</p>';
        }
        if (strlen($notes)) {
            $b .= '<p>'.$notes.'</p>';
        }
    } else {
        $b .= '<p>'.t('The impressum addon needs to be configured!<br />Please add at least the <tt>owner</tt> variable to your config file. For other variables please refer to the README file of the addon.').'</p>';
    }
}

function impressum_addon_admin_post (&$a) {
    $owner = ((x($_POST, 'owner')) ? notags(trim($_POST['owner'])) : '');
    $ownerprofile = ((x($_POST, 'ownerprofile')) ? notags(trim($_POST['ownerprofile'])) : '');
    $postal = ((x($_POST, 'postal')) ? (trim($_POST['postal'])) : '');
    $notes = ((x($_POST, 'notes')) ? (trim($_POST['notes'])) : '');
    $email = ((x($_POST, 'email')) ? notags(trim($_POST['email'])) : '');
    $footer_text = ((x($_POST, 'footer_text')) ? (trim($_POST['footer_text'])) : '');
    Config::set('impressum','owner',strip_tags($owner));
    Config::set('impressum','ownerprofile',strip_tags($ownerprofile));
    Config::set('impressum','postal',strip_tags($postal));
    Config::set('impressum','email',strip_tags($email));
    Config::set('impressum','notes',strip_tags($notes));
    Config::set('impressum','footer_text',strip_tags($footer_text));
    info( t('Settings updated.'). EOL );
}
function impressum_addon_admin (&$a, &$o) {
    $t = get_markup_template( "admin.tpl", "addon/impressum/" );
    $o = replace_macros($t, [
        '$submit' => t('Save Settings'),
        '$owner' => ['owner', t('Site Owner'), Config::get('impressum','owner'), t('The page operators name.')],
        '$ownerprofile' => ['ownerprofile', t('Site Owners Profile'), Config::get('impressum','ownerprofile'), t('Profile address of the operator.')],
        '$postal' => ['postal', t('Postal Address'), Config::get('impressum','postal'), t('How to contact the operator via snail mail. You can use BBCode here.')],
        '$notes' => ['notes', t('Notes'), Config::get('impressum','notes'), t('Additional notes that are displayed beneath the contact information. You can use BBCode here.')],
        '$email' => ['email', t('Email Address'), Config::get('impressum','email'), t('How to contact the operator via email. (will be displayed obfuscated)')],
        '$footer_text' => ['footer_text', t('Footer note'), Config::get('impressum','footer_text'), t('Text for the footer. You can use BBCode here.')],
    ]);
}