300 lines
12 KiB
PHP
300 lines
12 KiB
PHP
<?php
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defined( 'ABSPATH' ) or die( 'No script kiddies please!' );
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// we may need a http proxy for the fetch. Should be set from the admin page.
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// define ('http_proxy', 'http://example.org:8080');
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// we'll set this as category => proxy, link => link, active => 0;
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// in the admin page, all entries will be displayed with a checkbox for activating, deactivating, deleting.
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require_once dirname ( __FILE__ ) . "/gcal-import-geocode.php";
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/**
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* The worker gets called by the WP scheduler.
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*
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* @since 0.1.0
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*
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*/
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function gcal_import_worker() {
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/*
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* retrieve the proxy from the db, and if it exists, construct a context.
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* TODO: USER:PASS in DB.
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*
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* http://www.pirob.com/2013/06/php-using-getheaders-and-filegetcontents-functions-behind-proxy.html
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*/
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$options = get_option('gcal_options');
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$terms = get_terms( array(
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'taxonomy' => 'termine_type',
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'hide_empty' => false, )
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);
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foreach($terms as $term){
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$unique_id = 'gcal_feed_' . $term->name;
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if ( empty ( $options[$unique_id] ) || $options[$unique_id] == '' ) {
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error_log ( "INFO: link for event category $term->name is not known; next");
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continue;
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}
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/*
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The update and delete logic goes as follows:
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- before we start updating, we mark all entries from this event category with recent = false. (i.e. outdated).
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- when we scan the ICS feed,
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- if an entry with the same UID exists and was not updated in the meantime: do nothing.
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- if it was updated in the meantime, we update our entry and set recent to true
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- if no such entry exists, we insert a new one and set recent to true
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- when we're finished, we delete all entries from this event category which still have recent set to false.
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Apparently, they were deleted on the remote end.
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*/
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// so we look for all published event posts in the GCal event category
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$args = array (
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'post_type' => 'termine',
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'post_status' => 'publish',
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'meta_key' => '_gcal_category',
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'meta_value' => $term->name,
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);
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$post_ids = get_posts( $args );
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// and set their recent flag to false.
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if(is_array($post_ids)) {
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foreach( $post_ids as $post_id ) {
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$id = $post_id->ID;
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update_post_meta( $id, '_gcal_recent', 'false' );
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}
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}
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// now we process the current feed.
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$link = $options[$unique_id];
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error_log ("INFO: now importing event cat $term->name, link $link");
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gcal_import_do_import($term->name, $link);
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// look if there are any published event posts in the current event category which were not posted anew or updated (ie recent == false)
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$args = array (
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'post_type' => 'termine',
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'post_status' => 'publish',
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'meta_query' => array(
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array(
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'key' => '_gcal_category',
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'value' => $term->name,
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),
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array(
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'key' => '_gcal_recent',
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'value' => 'false',
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),
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)
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);
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$post_ids = get_posts( $args );
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// and trash them.
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if(is_array($post_ids)) {
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foreach( $post_ids as $post_id ) {
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$id = $post_id->ID;
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wp_trash_post( $id );
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error_log ("Event post $id gelöscht.");
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}
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}
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}
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}
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add_action( 'gcal_import_worker_hook', 'gcal_import_worker' );
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require_once dirname (__FILE__) . '/icalparser/src/IcalParser.php';
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require_once dirname (__FILE__) . '/icalparser/src/Recurrence.php';
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require_once dirname (__FILE__) . '/icalparser/src/Freq.php';
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require_once dirname (__FILE__) . '/icalparser/src/WindowsTimezones.php';
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function gcal_import_do_import($category, $link) {
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$cal = new \om\IcalParser();
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$results = $cal->parseFile($link);
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// TODO: Fehlerbehandlung, wenn der Link kaputt ist. Muss graceful passieren.
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// icalparser nutzt intern file_get_contents, und da kommt man nicht ohne weiteres ran. Evtl. ändern auf curl?
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// oder abfangen mit @file...
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// we must set a current user because we may not be logged in.
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$user_id = 1;
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$user = get_user_by( 'id', $user_id );
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if( $user ) {
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wp_set_current_user( $user_id, $user->user_login );
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wp_set_auth_cookie( $user_id );
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}
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foreach ($cal->getSortedEvents() as $r) {
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// if DTEND lies in the past, this event has expired. Ignore.
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$now = new DateTime();
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// $dtend = new DateTime($r['DTEND']);
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$summary = $r['SUMMARY'];
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$dtstart = $r['DTSTART']->format('d.m.Y H:i');
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if ($r['DTEND'] < $now) {
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continue;
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} else {
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error_log ("INFO: processing $summary on $dtstart");
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}
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// The zeitstempel. No idea what it's for, but kal3000 seems to use it.
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$wpc_from = $r['DTSTART']->format('d.m.Y H:i');
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// code borrowed from kal3000_termine_save_postdata which will not be invoked.
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$zeitstempel = strftime( strToTime( $wpc_from ) );
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if(!$zeitstempel) {
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// strftime doesn't seem to work, so let's get creative
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preg_match("/([0-9]{1,2}).\s(\w{1,})\s([0-9]{4})\s([0-9]{2}):([0-9]{2})/", $wpc_from, $zeitstempel);
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$month_number = "";
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for($i=1;$i<=12;$i++){
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if(strtolower(date_i18n("F", mktime(0, 0, 0, $i, 1, 0))) == strtolower($zeitstempel[2])){
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$month_number = $i;
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break;
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}
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}
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$zeit = mktime($zeitstempel[4], $zeitstempel[5], 0, $month_number, $zeitstempel[1], $zeitstempel[3]);
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$zeitstempel = date_i18n('U', $zeit);
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}
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// geocoden
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$location = urldecode ($r['LOCATION']);
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$my_latlon = gcal_import_geocode($location);
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// create a default form
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// $post = get_default_post_to_edit ('termine', false);
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$post_type = 'termine';
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// why can't I simply call get_default_post_to_edit? This gives an undefined function error!
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$post = new stdClass;
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$post->ID = 0;
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$post->post_author = '';
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$post->post_date = '';
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$post->post_date_gmt = '';
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$post->post_password = '';
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$post->post_name = '';
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$post->post_type = $post_type;
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$post->post_status = 'draft';
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$post->to_ping = '';
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$post->pinged = '';
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$post->comment_status = get_default_comment_status( $post_type );
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$post->ping_status = get_default_comment_status( $post_type, 'pingback' );
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$post->post_pingback = get_option( 'default_pingback_flag' );
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$post->post_category = get_option( 'default_category' );
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$post->page_template = 'default';
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$post->post_parent = 0;
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$post->menu_order = 0;
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$post = new WP_Post( $post );
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$post->post_content = apply_filters( 'default_content', $post_content, $post );
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$post->post_title = apply_filters( 'default_title', $post_title, $post );
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$post->post_excerpt = apply_filters( 'default_excerpt', $post_excerpt, $post );
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// TODO:
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if ( isset($r['ATTACH']) ) {
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// create image attachment and associate with new post
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$attach = $r['ATTACH'];
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$summary = $r['SUMMARY'];
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error_log ("INFO: found attachment $attach for $summary");
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}
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// and fill in the post form
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$post->post_author = '1';
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$post->post_content = $r['DESCRIPTION'];
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$post->post_title = $r['SUMMARY'];
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// create an excerpt for the overview page ([wpcalendar kat=...])
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if (strlen ($r['DESCRIPTION']) > 160) {
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$post->post_excerpt = substr ($r['DESCRIPTION'], 0, 160) . ' ...'; // first 160 chars of DESCRIPTION plus ' ...'
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} else {
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$post->post_excerpt = $r['DESCRIPTION'];
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}
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$post->post_status = 'publish';
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$post->post_category = array ($category,);
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// sanitized title. We will add a timestamp to enable recurring events
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// this is not handled properly by wp_insert_post - recurring events would all have the same post_name.
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// $post->post_name = $r['DTSTART']->format('Y-m-d-H-i') . '-' . strtolower( urlencode($r['SUMMARY']) ) ;
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$post->visibility = 'public';
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// now the wpcalendar metas.
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$post->meta_input = array(
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'_wpcal_from' => $r['DTSTART']->format('d.m.Y H:i'),
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'_bis' => $r['DTEND']->format('d.m.Y H:i'),
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'_geostadt' => gcal_import_geocity($r['LOCATION']),
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'_geoshow' => gcal_import_geoshow($r['LOCATION']),
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'_lat' => $my_latlon[0],
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'_lon' => $my_latlon[1],
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'_zoom' => '10',
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'_veranstalter' => '',
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'_veranstalterlnk' => '',
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'_zeitstempel' => $zeitstempel,
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'_gcal_uid' => $r['UID'],
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'_gcal_recent' => 'true',
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'_gcal_created' => $r['LAST-MODIFIED']->format('U'),
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'_gcal_category' => $category,
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'_secretevent' => false,
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);
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// so we have the new posts's attributes. Now we need to decide what to do with it.
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// first, we try to find a published post with the same UID and zeitstempel. (due to recurring events having the same UID)
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// Alas, this will lead to events that were shifted to be trashed and posted anew. We cannot tell shifted events from recurring events.
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$args = array (
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'post_type' => 'termine',
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'post_status' => 'publish',
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'meta_query' => array(
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array(
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'key' => '_gcal_uid',
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'value' => $r['UID'],
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),
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array(
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'key' => '_zeitstempel',
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'value' => $zeitstempel,
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),
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)
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);
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$post_ids = get_posts( $args );
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// did we find one? (It should really be only one!)
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if ( is_array ( $post_ids ) ) {
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if ( empty ( $post_ids ) ) {
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// ok, none found, so we insert the new one
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$post_id = wp_insert_post( $post );
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if ( is_wp_error( $post_id ) ) {
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$message = $post_id->get_error_message();
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error_log ( "WARN: $message" );
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} else {
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update_post_meta( $post_id, '_edit_last', $user_id );
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$now = time();
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$lock = "$now:$user_id";
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update_post_meta( $post_id, '_edit_lock', $lock );
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// and assign the taxonomy type and event category.
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wp_set_object_terms( $post_id, $category, 'termine_type' );
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error_log ("INFO: posted new post $post_id");
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}
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} else {
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// good, the post exists already.
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$id = $post_ids[0]->ID;
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$created = get_post_meta( $id, '_gcal_created', true );
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$lastmodified = $r['LAST-MODIFIED']->format('U');
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// was it updated on the remote calendar? (was if modified after it was created remotely?)
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if ( $lastmodified > $created ) {
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// yes, so we update the existing post. We don't care _what_ changed.
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$post->ID = $id ;
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$post_id = wp_update_post( $post, false );
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// and update the _created field
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update_post_meta ( $id, '_gcal_created', $lastmodified );
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error_log ("INFO: updated post $post_id");
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} elseif ( $lastmodified == $created ) {
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// it was not modified after we created it, so we only update the recent tag.
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} elseif ( $lastmodified < $created ) {
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// iiiiek! A time reversal or a secret time machine! That should not happen!
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error_log ("WARN: post $id last-modified : created $lastmodified < $created ");
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}
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// and set the event to recent = true no matter what.
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update_post_meta ( $id, '_gcal_recent', 'true' );
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}
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} else {
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$file = dirname (__FILE__) . '/get_posts-' . $post->post_name . '.txt';
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error_log ("WARN: hmmm, get_posts() did not return an array. Logging to $file");
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file_put_contents ($file, var_export ($post_ids, TRUE));
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}
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// and on the next entry.
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}
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// foreach end. we're finished.
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}
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