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radar-wp/includes/squat-radar-formatter.php
ekes 65db102f6f Tidied up code comments pre-release.
2019-05-12 15:37:07 +02:00

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PHP
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<?php
/**
* Squat Radar Events Formatter.
*
* Provides filters to format the output of Squat Radar Events.
*
* 'squat_radar_format_event' allows the whole event to be formatted.
* Default filter Squat_Radar_Formatter::format_event().
*
* 'squat_radar_field_html' formats individual fields.
* Basic implementation Squat_Radar_Formatter::field_html().
*
* @package squat-radar
* @since 2.0.0
*/
// Exit if accessed directly.
defined( 'ABSPATH' ) || exit;
class Squat_Radar_Formatter {
/**
* Register filters with Wordpress.
*/
static public function register() {
// Filter to go through fields and then call filters to turn these into HTML.
add_filter('squat_radar_format_event', [__CLASS__, 'format_event'], 10, 3);
// Filters to turn each individual field into HTML.
//
// $value is the data from the field and can be an array or string.
//
// These filters extract data from arrays based on the field structure.
// If you make a change it is a requirement to sanitize
// anything that will be output.
add_filter('squat_radar_field_html', [__CLASS__, 'field_date_html'], 5, 4);
add_filter('squat_radar_field_html', [__CLASS__, 'field_location_html'], 5, 4);
add_filter('squat_radar_field_html', [__CLASS__, 'field_link_html'], 5, 4);
add_filter('squat_radar_field_html', [__CLASS__, 'field_summary_html'], 5, 4);
// Field 'url' was already turned into a <a> link, by field_link_html.
// The field_image_html is an example of an override with more specificity.
add_filter('squat_radar_field_html', [__CLASS__, 'field_image_html'], 7, 4);
// If $value is an array it is flattened into a string here.
// If $value != $original it will _not_ be sanitized, assumption is that it has been already.
add_filter('squat_radar_field_html', [__CLASS__, 'field_html'], 10, 4);
// $value is always a string from this point.
// These filters just add additional wrapper markup.
add_filter('squat_radar_field_html', [__CLASS__, 'field_title_html'], 15, 4);
}
/**
* Implementation of 'squat_radar_format_event'.
*
* Formats an API event array into HTML.
*
* @param array $event
* The event array from the API. Nested field names with values.
* @param array $fields
* The field names required for display. Colons used to denote nesting.
* @param array $context
*
* @return string
* HTML.
*/
static public function format_event($event, $fields, $context) {
$context['event'] = $event;
$output = [];
$event_status = self::getValue( $event, ['event_status'] );
$output[] = '<div class="squat-radar radar-event radar-event-' . $event_status . '">';
foreach ($fields as $field) {
$field_tree = explode(':', $field);
$value = self::getValue($event, $field_tree);
$field_tree = array_reverse($field_tree);
$output[] = apply_filters('squat_radar_field_html', $value, $value, $field_tree, $context);
}
$output[] = '</div>';
return $output;
}
/**
* Basic implementation of 'squat_radar_field_html' filter.
*
* Put the output into HTML.
*
* @param array|string $value
* The field value being manipulated to become HTML to be displayed.
* @param array|string $original
* The original value of the field before any changes by filters.
* @param array $field
* The field tree. $field[0] being the name of the present field. $field[1]
* being any parent etc.
* @param array $context
*
* @return string
* Flattend array with additional default classes.
*/
static public function field_html($value, $original, $field, $context) {
if ($value != $original) {
return $value;
}
if (is_array($value)) {
if ( ! empty($value['value']) ) {
$value = $value['value'];
}
elseif ( ! empty($value['title']) ) {
$value = $value['title'];
}
elseif ( ! empty($value['name']) ) {
$value = $value['name'];
}
elseif ( ! empty($value[0]['value']) ) {
foreach ($value as $row) {
$values[] = $row['value'];
}
$value = $values;
}
elseif ( ! empty($value[0]['title']) ) {
foreach ($value as $row) {
$titles[] = $row['title'];
}
$value = $titles;
}
elseif ( ! empty($value[0]['name']) ) {
foreach ($value as $row) {
$names[] = $row['name'];
}
$value = $names;
}
}
if (is_array($value)) {
$output = '<ul class="squat-radar-' . sanitize_html_class($field[0]) . ' squat-radar-list">';
foreach ($value as $row) {
$output .= '<li class="squat-radar-item-' . sanitize_html_class($field[0]) . '">' . sanitize_text_field( $row ) . '</li>';
}
$output .= '</ul>';
return $output;
}
else {
$value = '<span class="squat-radar-' . sanitize_html_class($field[0]) . '">' . wp_kses_post( $value ) . '</span>';
}
return $value;
}
/**
* Date field formatting implementation of 'squat_radar_field_html' filter.
*/
static public function field_date_html($value, $original, $field, $context) {
switch ($field[0]) {
case 'created':
case 'updated':
$output = '';
if ($value) {
$output = date_i18n( get_option( 'date_format' ), $value );
$placeholder = ($field[0] == 'created') ? __('Created: %s', 'squat-radar') : __('Updated: %s', 'squat-radar');
$output = '<span class="squat-radar-meta-data squat-radar-' . $field[0] . '">' . sprintf($placeholder, $output) . '</span>';
}
return $output;
// "date_time": [
// {
// "value": "1556442000",
// "value2": "1556442000",
// "duration": 0,
// "time_start": "2019-04-28T11:00:00+02:00",
// "time_end": "2019-04-28T11:00:00+02:00",
// "rrule": null
// }
// ],
case 'date_time':
$output = '';
// There can only be one date. With repeat etc. but just one.
// Repeating events will appear as a new item for each repeat in the feed.
$value = $value[0];
$output = '<span class="squat-radar-event-start-end">';
$output .= self::field_date_format( $value['time_start'], 'start' );
if ($value['time_start'] != $value['time_end']) {
$time_only = ( substr($value['time_start'], 0, 10) == substr($value['time_end'], 0, 10) );
$output .= ' - ' . self::field_date_format( $value['time_end'], 'end', $time_only );
}
$output .= '</span>';
return $output;
case 'time_start':
$value = $value[0];
$output = '<span class="squat-radar-event-start">';
$output .= self::field_date_format($value, 'start');
$output .= '</span>';
return $output;
case 'time_end':
$value = $value[0];
$output = '<span class="squat-radar-event-end">';
$output .= self::field_date_format($value, 'end');
$output .= '</span>';
return $output;
}
return $value;
}
private static function field_date_format($time, $start_end, $time_only = FALSE) {
$date_format = get_option('squat_radar_date_format', 'j M Y');
$time_format = get_option('squat_radar_time_format', 'H:i');
// Remove offset to stop time being converted to UTC.
$time = substr($time, 0, -6);
$output = '<span class="squat-radar-datetime squat-radar-datetime-' . $start_end .'">';
if ( ! $time_only ) {
$output .= '<span class="squat-radar-date">';
$output .= date_i18n($date_format, strtotime($time));
$output .= '</span> ';
}
$output .= '<span class="squat-radar-time">';
$output .= date_i18n($time_format, strtotime($time));
$output .= '</span></span>';
return $output;
}
/**
* Location field implementation of 'squat_radar_field_html' filter.
*
* "offline": [
* {
* "uri": "https://radar.squat.net/api/1.2/location/b5786379-da49-4026-8c4e-bcc1a1563284",
* "id": "b5786379-da49-4026-8c4e-bcc1a1563284",
* "resource": "location",
* "title": "Yorck-Kino Yorckstr. 86 Berlin Deutschland",
* "map": {
* "geom": "POINT (13.3853499 52.4930248)",
* "geo_type": "point",
* "lat": "52.493024800000",
* "lon": "13.385349900000",
* "left": "13.385349900000",
* "top": "52.493024800000",
* "right": "13.385349900000",
* "bottom": "52.493024800000",
* "srid": null,
* "latlon": "52.493024800000,13.385349900000",
* "schemaorg_shape": ""
* }
* }
* ]
*/
static public function field_location_html($value, $original, $field, $context) {
switch ($field[0]) {
case 'map':
$output = [];
foreach ($value as $map) {
if ( is_array($map) && ! empty($map['lat']) && $map['lat'] !== NULL && $map['lon'] !== NULL ) {
$this_output = '<span class="squat-radar-location squat-radar-location-map-link">';
$lat = $map['lat'];
$lon = $map['lon'];
$this_output .= "<a href=\"https://www.openstreetmap.org/?mlat=$lat&mlon=$lon#map=14/$lat/$lon\" target=\"_blank\">";
$this_output .= __('[Map]', 'squat-radar');
$this_output .= '</a></span>';
$output[] = $this_output;
}
}
return implode(', ', $output);
case 'address':
$output = [];
foreach ($value as $address) {
if ( is_array($address) ) {
$this_address = [];
foreach (['name_line', 'thoroughfare', 'locality', 'postal_code', 'country'] as $field_name) {
if (! empty($address[$field_name])) {
$this_line = '<span class="squat-radar-location-' . $field_name . '">';
$this_line .= sanitize_text_field($address[$field_name]);
$this_line .= '</span>';
$this_address[] = $this_line;
}
}
$this_output = '<span class="squat-radar-location squat-radar-location-address">';
$this_output .= implode(', ', $this_address);
$this_output .= '</span>';
$output[] = $this_output;
}
}
return implode('; ', $output);
}
return $value;
}
/**
* Item Radar links implementation of 'squat_radar_field_html' filter.
*/
static public function field_link_html($value, $original, $field, $context) {
if ( ($field[0] == 'title' || $field[0] == 'title_field') && ! empty($context['event']['url'])) {
return '<a href="' . esc_url($context['event']['url']) . '" class="squat-radar-url squat-radar-url-title">' . sanitize_text_field( $value ) . '</a>';
}
if ($field[0] == 'url' && count($field) == 1) {
return '<a href="' . esc_url_raw($value) . '" class="squat-radar-url squat-radar-url-more">' . __('more…', 'squat-radar') . '</a>';
}
elseif ($field[0] == 'url') {
$title = esc_url($value);
array_shift($field);
if (is_array($field)) {
$field_tree = array_reverse($field);
$sibling_fields = self::getValue($context['event'], $field_tree);
$class = 'squat-radar-url-link';
if (! empty($sibling_fields['title']) ) {
$title = sanitize_text_field( $sibling_fields['title']);
$class = 'squat-radar-url-title';
}
elseif ( ! empty($sibling_fields['name']) ) {
$title = sanitize_text_field( $sibling_fields['name']);
$class = 'squat-radar-url-name';
}
}
return '<a href="' . esc_url_raw($value) . '" class="squat-radar-url ' . $class . '">' . $title . '</a>';
}
if ($field[0] == 'link') {
return '<a href="' . esc_url_raw($value['url']) . '" class="squat-radar-url squat-radar-url-link">' . esc_url($value['url']) . '</a>';
}
return $value;
}
/**
* Item Radar summary implementation of 'squat_radar_field_html' filter.
*/
static public function field_summary_html($value, $original, $field, $context) {
if ( $field[0] == 'summary' ) {
// Summary is only populated if there is an explict summary.
if ( empty( trim($value) ) ) {
array_shift($field);
if (is_array($field)) {
$field_tree = array_reverse($field);
$sibling_fields = self::getValue($context['event'], $field_tree);
$value = print_r($context['event'], true);
if (! empty( $sibling_fields['value'] ) ) {
$value = wp_trim_words( $sibling_fields['value'], 30 );
}
}
}
if ( ! empty($value) ) {
$value = '<span class="squat-radar-body-summary">' . wp_kses_post( $value ) . '</span>';
}
}
return $value;
}
/**
* Format image implementation of 'squat_radar_field_html' filter.
*
* Intentionally run after field_link_html. Showing how to override an existing filter.
* image:file:url
*/
static public function field_image_html($value, $original, $field, $context) {
if ($field[0] == 'url' && $field[1] == 'file' && $field[2] == 'image') {
return '<img src="'. esc_url_raw($original) .'" class="squat-radar-image" \>';
}
return $value;
}
/**
* Title field HTML implementation of 'squat_radar_field_html' filter.
*/
static public function field_title_html($value, $original, $field, $context) {
if (($field[0] == 'title' || $field[0] == 'title_field') && count($field) == 1) {
$value = '<h3 class="squat-radar-title">' . $value . '</h3>';
}
return $value;
}
/**
* Retrieves a value from a nested array with variable depth.
*
* Handles on level of multiple[] values on a key.
* It will work for deeper multiples, but return the top match.
*
* @param array $array
* The array from which to get the value.
* @param array $parents
* An array of parent keys of the value, starting with the outermost key.
* @param bool $key_exists
* (optional) If given, an already defined variable that is altered by
* reference.
*
* @return mixed
* The requested nested value. Possibly NULL if the value is NULL or not all
* nested parent keys exist. $key_exists is altered by reference and is a
* Boolean that indicates whether all nested parent keys exist (TRUE) or not
* (FALSE). This allows to distinguish between the two possibilities when
* NULL is returned.
*/
public static function &getValue(array &$array, array $parents, &$key_exists = NULL) {
$ref =& $array;
while ($parent = array_shift($parents)) {
if (is_array($ref) && array_key_exists($parent, $ref)) {
$ref =& $ref[$parent];
}
elseif (is_array($ref) && isset($ref[0])) {
$multiple = [];
array_unshift($parents, $parent);
foreach ($ref as &$value) {
$multiple[] = self::getValue($value, $parents, $key_exists);
}
if (!empty($multiple) ) {
return $multiple;
}
else {
$key_exists = FALSE;
$null = NULL;
return $null;
}
}
else {
$key_exists = FALSE;
$null = NULL;
return $null;
}
}
$key_exists = TRUE;
return $ref;
}
}
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