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<?php |
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/** |
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* Grouped Calendars Feed |
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* |
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* @package SimpleCalendar/Feeds |
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*/ |
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namespace SimpleCalendar\Feeds; |
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use SimpleCalendar\Abstracts\Calendar; |
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use SimpleCalendar\Abstracts\Feed; |
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use SimpleCalendar\Feeds\Admin\Grouped_Calendars_Admin; |
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if ( ! defined( 'ABSPATH' ) ) { |
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exit; |
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} |
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/** |
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* Grouped calendars feed. |
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* |
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* Feed made of multiple calendar feeds combined together. |
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* |
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* @since 3.0.0 |
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*/ |
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class Grouped_Calendars extends Feed { |
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/** |
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* Feed ids to get events from. |
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* |
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* @access public |
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* @var array |
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*/ |
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public $calendars_ids = array(); |
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/** |
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* Set properties. |
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* |
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* @since 3.0.0 |
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* |
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* @param string|Calendar $calendar |
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*/ |
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public function __construct( $calendar = '' ) { |
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parent::__construct( $calendar ); |
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$this->type = 'grouped-calendars'; |
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$this->name = __( 'Grouped Calendar', 'google-calendar-events' ); |
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if ( $this->post_id > 0 ) { |
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$this->set_source(); |
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if ( ! is_admin() || defined( 'DOING_AJAX' ) ) { |
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$this->events = $this->get_events(); |
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} |
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} |
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if ( is_admin() && ! defined( 'DOING_AJAX' ) ) { |
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new Grouped_Calendars_Admin( $this ); |
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} |
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} |
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/** |
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* Set source. |
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* |
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* @since 3.0.0 |
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* |
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* @param array $ids Array of calendar ids. |
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*/ |
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public function set_source( $ids = array() ) { |
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$source = get_post_meta( $this->post_id, '_grouped_calendars_source', true ); |
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if ( 'ids' == $source ) { |
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if ( empty( $ids ) ) { |
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$ids = get_post_meta( $this->post_id, '_grouped_calendars_ids', true ); |
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} |
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$this->calendars_ids = ! empty( $ids ) && is_array( $ids ) ? array_map( 'absint', $ids ) : array(); |
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} elseif ( 'category' == $source ) { |
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$categories = get_post_meta( $this->post_id, '_grouped_calendars_category', true ); |
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if ( $categories && is_array( $categories ) ) { |
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$tax_query = array( |
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'taxonomy' => 'calendar_category', |
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'field' => 'term_id', |
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'terms' => array_map( 'absint', $categories ), |
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); |
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$calendars = get_posts( array( |
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'post_type' => 'calendar', |
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'tax_query' => array( $tax_query ), |
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'nopaging' => true, |
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'fields' => 'ids', |
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) ); |
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$this->calendars_ids = ! empty( $calendars ) && is_array( $calendars ) ? $calendars : array(); |
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} |
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} |
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} |
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/** |
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* Get events from multiple calendars. |
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* |
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* @since 3.0.0 |
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* |
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* @return array |
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*/ |
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public function get_events() { |
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$ids = $this->calendars_ids; |
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$events = get_transient( '_simple-calendar_feed_id_' . strval( $this->post_id ) . '_' . $this->type ); |
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if ( empty( $events ) && ! empty( $ids ) && is_array( $ids ) ) { |
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$events = array(); |
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foreach ( $ids as $cal_id ) { |
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$calendar = simcal_get_calendar( intval( $cal_id ) ); |
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simcal_delete_feed_transients( $cal_id ); |
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if ( $calendar instanceof Calendar ) { |
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// Sometimes the calendars might have events at the same time from different calendars |
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// When merging the arrays together some of the events will be lost because the keys are the same and one will overwrite the other |
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// This snippet checks if the key already exists in the master events array and if it does it subtracts 1 from it to make the key unique and then unsets the original key. |
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foreach( $calendar->events as $k => $v ) { |
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if ( array_key_exists( $k, $events ) ) { |
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$calendar->events[ $k - 1 ] = $v; |
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unset( $k ); |
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} |
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} |
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$events = is_array( $calendar->events ) ? $events + $calendar->events : $events; |
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} |
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} |
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if ( ! empty( $events ) ) { |
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// Trim events to set the earliest one as specified in feed settings. |
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$earliest_event = intval( $this->time_min ); |
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if ( $earliest_event > 0 ) { |
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$events = $this->array_filter_key( $events, array( $this, 'filter_events_before' ) ); |
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} |
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// Trim events to set the latest one as specified in feed settings. |
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$latest_event = intval( $this->time_max ); |
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if ( $latest_event > 0 ) { |
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$events = $this->array_filter_key( $events, array( $this, 'filter_events_after' ) ); |
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} |
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set_transient( |
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'_simple-calendar_feed_id_' . strval( $this->post_id ) . '_' . $this->type, |
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$events, |
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absint( $this->cache ) |
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); |
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} |
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} |
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// Sort events by start time before returning |
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uasort( $events, array( $this, 'sort_by_start_time' ) ); |
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return $events; |
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} |
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/** |
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* uasort helper to sort events by start time. |
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* |
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* @since 3.0.13 |
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* @access private |
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*/ |
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private function sort_by_start_time( $a, $b ) { |
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if ( $a == $b ) { |
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return 0; |
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} |
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return ( $a[0]->start < $b[0]->start ) ? -1 : 1; |
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} |
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/** |
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* Array filter key. |
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* |
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* `array_filter` does not allow to parse an associative array keys before PHP 5.6. |
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* |
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* @since 3.0.0 |
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* @access private |
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* |
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* @param array $array |
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* @param array|string $callback |
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* |
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* @return array |
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*/ |
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private function array_filter_key( array $array, $callback ) { |
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$matched_keys = array_filter( array_keys( $array ), $callback ); |
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return array_intersect_key( $array, array_flip( $matched_keys ) ); |
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} |
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/** |
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* Array filter callback. |
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* |
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* @since 3.0.0 |
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* @access private |
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* |
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* @param int $event Timestamp. |
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* |
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* @return bool |
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*/ |
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private function filter_events_before( $event ) { |
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if ( $this->time_min !== 0 ) { |
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return intval( $event ) > intval( $this->time_min ); |
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} |
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return true; |
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} |
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/** |
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* Array filter callback. |
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* |
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* @since 3.0.0 |
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* @access private |
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* |
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* @param int $event Timestamp. |
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* |
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* @return bool |
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*/ |
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private function filter_events_after( $event ) { |
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if ( $this->time_max !== 0 ) { |
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return intval( $event ) < intval( $this->time_max ); |
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} |
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return true; |
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} |
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} |
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moonstonemedia /
Simple-Calendar
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