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refactor all functions into classes + methods

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Martin Schütte 2014-05-19 19:16:38 +02:00 committed by info@mschuette.name
parent 94c6027fa3
commit 5d5f3d07eb
1 changed files with 320 additions and 228 deletions
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288
freifunkmeta.php
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@ -1,9 +1,9 @@
<?php
/*
/**
Plugin Name: Freifunk Metadata Shortcodes
Plugin URI: http://mschuette.name/
Description: Defines shortcodes to display Freifunk metadata
Version: 0.2
Version: 0.3
Author: Martin Schuette
Author URI: http://mschuette.name/
*/
@ -12,88 +12,141 @@ define('FF_META_DEFAULT_CACHETIME', 15);
define('FF_META_DEFAULT_DIR', 'https://raw.githubusercontent.com/freifunk/directory.api.freifunk.net/master/directory.json');
define('FF_META_DEFAULT_CITY', 'hamburg');
/**
* class to fetch and cache data from external URLs
*/
class FF_Meta_Externaldata
{
public function get($url) {
/* gets metadata from URL, handles caching */
function ff_meta_getmetadata ($url) {
$url_hash = hash('crc32', $url);
$cachekey = 'ff_metadata_'.hash('crc32', $url);
$cachetime = get_option('ff_meta_cachetime', FF_META_DEFAULT_CACHETIME) * MINUTE_IN_SECONDS;
// Caching
if ( false === ( $metajson = get_transient( "ff_metadata_${url_hash}" ) ) ) {
$metajson = wp_remote_retrieve_body( wp_remote_get($url) );
$cachetime = get_option( 'ff_meta_cachetime', FF_META_DEFAULT_CACHETIME) * MINUTE_IN_SECONDS;
set_transient( "ff_metadata_${url_hash}", $metajson, $cachetime );
if ( false === ( $data = get_transient($cachekey) ) ) {
$json = wp_remote_retrieve_body(wp_remote_get($url));
$data = json_decode ($json, $assoc = true);
set_transient( $cachekey, $data, $cachetime );
}
return $data;
}
$metadata = json_decode ( $metajson, $assoc = true );
return $metadata;
}
if ( ! shortcode_exists( 'ff_state' ) ) {
add_shortcode( 'ff_state', 'ff_meta_shortcode_handler');
/**
* holds the community directory
*/
class FF_Directory
{
private $directory;
function __construct() {
$this->directory = FF_Meta_Externaldata::get(FF_META_DEFAULT_DIR);
}
if ( ! shortcode_exists( 'ff_services' ) ) {
add_shortcode( 'ff_services', 'ff_meta_shortcode_handler');
}
if ( ! shortcode_exists( 'ff_contact' ) ) {
add_shortcode( 'ff_contact', 'ff_meta_shortcode_handler');
}
if ( ! shortcode_exists( 'ff_location' ) ) {
add_shortcode( 'ff_location', 'ff_meta_shortcode_handler');
}
// Example:
// [ff_state]
// [ff_state hamburg]
function ff_meta_shortcode_handler( $atts, $content, $name ) {
// $atts[0] holds the city name, if given
if (empty($atts[0])) {
$city = get_option( 'ff_meta_city', FF_META_DEFAULT_CITY );
function get_url_by_city($city) {
$val = $this->directory[$city];
if (empty($val)) {
return false;
} else {
$city = $atts[0];
return $val;
}
}
}
if (false === ($directory = ff_meta_getmetadata ( FF_META_DEFAULT_DIR ))
|| empty($directory[$city])) {
/**
* OO interface to handle a single community/city
*/
class FF_Community
{
public $name;
public $street;
public $zip;
public $city;
public $lon;
public $lat;
/**
* Default constructor from metadata
*/
function __construct($metadata) {
$loc = $metadata['location'];
$this->name = (isset($loc['address']) && isset($loc['address']['Name'])) ? $loc['address']['Name'] : '';
$this->street = (isset($loc['address']) && isset($loc['address']['Street'])) ? $loc['address']['Street'] : '';
$this->zip = (isset($loc['address']) && isset($loc['address']['Zipcode'])) ? $loc['address']['Zipcode'] : '';
$this->city = isset($loc['city']) ? $loc['city'] : '';
$this->lon = isset($loc['lon']) ? $loc['lon'] : '';
$this->lat = isset($loc['lat']) ? $loc['lat'] : '';
}
/**
* Alternative constructor from city name
*/
static function make_from_city($city) {
// TODO: test
if (false === ($url = $this->dir->get_url_by_city($city))) {
return "<!-- FF Meta Error: cannot get directory.json, or no URL for '$city' -->\n";
}
$url = $directory[$city];
if (false === ($metadata = ff_meta_getmetadata ($url))) {
if (false === ($metadata = FF_Meta_Externaldata::get($url))) {
return "<!-- FF Meta Error: cannot get metadata from $url -->\n";
}
$outstr = "<div class=\"ff $name\">";
switch ($name) {
case 'ff_state':
$state = $metadata['state'];
$outstr .= sprintf('%s', $state['nodes']);
break;
case 'ff_location':
// normal per-city code
$loc = $metadata['location'];
$loc_name = (isset($loc['address']) && isset($loc['address']['Name'])) ? $loc['address']['Name'] : '';
$loc_street = (isset($loc['address']) && isset($loc['address']['Street'])) ? $loc['address']['Street'] : '';
$loc_zip = (isset($loc['address']) && isset($loc['address']['Zipcode'])) ? $loc['address']['Zipcode'] : '';
$loc_city = isset($loc['city']) ? $loc['city'] : '';
$loc_lon = isset($loc['lon']) ? $loc['lon'] : '';
$loc_lat = isset($loc['lat']) ? $loc['lat'] : '';
if (empty($loc_name) || empty($loc_street) || empty($loc_zip)) {
return '';
return new FF_Community($metadata);
}
function format_address() {
if (empty($this->name) || empty($this->street) || empty($this->zip)) {
return '';
}
// TODO: style address + map as single box
// TODO: once it is "ready" package openlayers.js into the plugin (cf. http://docs.openlayers.org/library/deploying.html)
// TODO: handle missing values (i.e. only name & city)
$outstr .= '<p>';
$outstr .= sprintf('%s<br/>%s<br/>%s %s',
$loc_name, $loc_street, $loc_zip, $loc_city);
$outstr .= '</p>';
return '<p>' . sprintf('%s<br/>%s<br/>%s %s', $this->name, $this->street, $this->zip, $this->city) . '</p>';
}
}
/**
* main class for whole plugin
*/
class FF_Meta
{
private $dir;
function __construct() {
$this->dir = new FF_Directory();
}
function register_stuff() {
if ( ! shortcode_exists('ff_state') ) {
add_shortcode('ff_state', array($this, 'shortcode_handler'));
}
if ( ! shortcode_exists('ff_services') ) {
add_shortcode('ff_services', array($this, 'shortcode_handler'));
}
if ( ! shortcode_exists('ff_contact') ) {
add_shortcode('ff_contact', array($this, 'shortcode_handler'));
}
if ( ! shortcode_exists('ff_location') ) {
add_shortcode('ff_location', array($this, 'shortcode_handler'));
}
add_action('admin_menu', array($this, 'admin_menu'));
add_action('admin_init', array($this, 'admin_init'));
register_uninstall_hook( __FILE__, array('ff_meta', 'uninstall_hook'));
}
function output_ff_state($citydata) {
$state = $citydata['state'];
return sprintf('%s', $state['nodes']);
}
function aux_get_all_locations() {
// gather all location data
if ( false === ( $json_locs = get_transient( "ff_metadata_json_locs" ) ) ) {
if (false === ( $json_locs = get_transient("FF_metadata_json_locs") )) {
$all_locs = array();
$arr_select = array('lat' => 1, 'lon' => 1);
foreach ($directory as $tmp_city => $url) {
foreach ($this->dir as $tmp_city => $url) {
try {
$tmp_meta = ff_meta_getmetadata($url);
$tmp_meta = FF_Meta_Externaldata::get($url);
if (!empty($tmp_meta['location'])) {
$tmp_loc = array_intersect_key($tmp_meta['location'], $arr_select);
$all_locs[$tmp_city] = $tmp_loc;
@ -103,9 +156,18 @@ function ff_meta_shortcode_handler( $atts, $content, $name ) {
}
}
$json_locs = json_encode($all_locs);
$cachetime = get_option( 'ff_meta_cachetime', FF_META_DEFAULT_CACHETIME) * MINUTE_IN_SECONDS;
set_transient( "ff_metadata_json_locs", $json_locs, $cachetime );
$cachetime = get_option('FF_meta_cachetime', FF_META_DEFAULT_CACHETIME) * MINUTE_IN_SECONDS;
set_transient("FF_metadata_json_locs", $json_locs, $cachetime);
}
return $json_locs;
}
function output_ff_location($citydata) {
// normal per-city code
$loc = new FF_Community($citydata);
$outstr = $loc->format_address();
$json_locs = $this->aux_get_all_locations();
if (!empty($loc_name) && !empty($loc_name)) {
$icon_url = plugin_dir_url(__FILE__) . "freifunk_marker.png";
@ -119,10 +181,10 @@ function ff_meta_shortcode_handler( $atts, $content, $name ) {
<script src="http://www.openlayers.org/api/OpenLayers.js"></script>
<script>
map = new OpenLayers.Map("mapdiv_$loc_city");
map = new OpenLayers.Map("mapdiv_$loc->city");
map.addLayer(new OpenLayers.Layer.OSM());
var lonLat = new OpenLayers.LonLat( $loc_lon, $loc_lat )
var lonLat = new OpenLayers.LonLat( $loc->lon, $loc->lat )
.transform(
new OpenLayers.Projection("EPSG:4326"), // transform from WGS 1984
map.getProjectionObject() // to Spherical Mercator Projection
@ -152,24 +214,24 @@ function ff_meta_shortcode_handler( $atts, $content, $name ) {
</script>
EOT;
}
break;
return $outstr;
}
case 'ff_services':
$outstr .= '<ul>';
if (isset($metadata['services'])) {
$services = $metadata['services'];
function output_ff_services($citydata) {
$outstr = '<ul>';
if (isset($citydata['services'])) {
$services = $citydata['services'];
foreach ($services as $service) {
$outstr .= sprintf('<li>%s (%s): <a href="%s">%s</a></li>',
$service['serviceName'], $service['serviceDescription'],
$service['internalUri'], $service['internalUri']);
$outstr .= sprintf('<li>%s (%s): <a href="%s">%s</a></li>', $service['serviceName'], $service['serviceDescription'], $service['internalUri'], $service['internalUri']);
}
}
$outstr .= '</ul>';
break;
return $outstr;
}
case 'ff_contact':
$outstr .= '<p>';
$contact = $metadata['contact'];
function output_ff_contact($citydata) {
$outstr = '<p>';
$contact = $citydata['contact'];
// Output -- rather ugly but the data is not uniform, some fields are URIs, some are usernames, ...
if (!empty($contact['email'])) {
$outstr .= sprintf("E-Mail: <a href=\"mailto:%s\">%s</a><br />\n", $contact['email'], $contact['email']);
@ -201,33 +263,59 @@ EOT;
$outstr .= sprintf("XMPP: <a href=\"xmpp:%s\">%s</a><br />\n", $contact['jabber'], $contact['jabber']);
}
$outstr .= '</p>';
break;
default:
return "";
break;
return $outstr;
}
// Output
function shortcode_handler($atts, $content, $shortcode) {
// $atts[0] holds the city name, if given
if (empty($atts[0])) {
$city = get_option('FF_meta_city', FF_META_DEFAULT_CITY);
} else {
$city = $atts[0];
}
if (false === ($cityurl = $this->dir->get_url_by_city($city))) {
return "<!-- FF Meta Error: cannot get directory.json, or no URL for '$city' -->\n";
}
if (false === ($metadata = FF_Meta_Externaldata::get($cityurl))) {
return "<!-- FF Meta Error: cannot get metadata from $cityurl -->\n";
}
$outstr = "<div class=\"ff $shortcode\">";
switch ($shortcode) {
case 'ff_state':
$outstr .= $this->output_ff_state($metadata);
break;
case 'ff_location':
$outstr .= $this->output_ff_location($metadata);
break;
case 'ff_services':
$outstr .= $this->output_ff_services($metadata);
break;
case 'ff_contact':
$outstr .= $this->output_ff_contact($metadata);
break;
default:
$outstr .= "";
break;
}
$outstr .= "</div>";
return $outstr;
}
function admin_menu() {
// Options Page:
add_action( 'admin_menu', 'ff_meta_admin_menu' );
function ff_meta_admin_menu() {
add_options_page(
'FF Meta Plugin', // page title
'FF Meta', // menu title
'manage_options', // req'd capability
'ff_meta_plugin', // menu slug
'ff_meta_options_page' // callback function
array ('FF_meta', 'options_page') // callback function
);
}
add_action( 'admin_init', 'ff_meta_admin_init' );
function ff_meta_admin_init() {
function admin_init() {
register_setting(
'ff_meta_settings-group', // group name
'ff_meta_cachetime' // option name
@ -239,13 +327,13 @@ function ff_meta_admin_init() {
add_settings_section(
'ff_meta_section-one', // ID
'Section One', // Title
'ff_meta_section_one_callback', // callback to fill
array ('FF_Meta', 'section_one_callback'), // callback to fill
'ff_meta_plugin' // page to display on
);
add_settings_field(
'ff_meta_city', // ID
'Default community', // Title
'ff_meta_city_callback', // callback to fill field
array ('FF_Meta', 'city_callback'), // callback to fill field
'ff_meta_plugin', // menu page=slug to display field on
'ff_meta_section-one', // section to display the field in
array('label_for' => 'ff_meta_city_id') // ID of input element
@ -253,25 +341,25 @@ function ff_meta_admin_init() {
add_settings_field(
'ff_meta_cachetime', // ID
'Cache time', // Title
'ff_meta_cachetime_callback', // callback to fill field
array ('FF_Meta', 'cachetime_callback'), // callback to fill field
'ff_meta_plugin', // menu page=slug to display field on
'ff_meta_section-one', // section to display the field in
array('label_for' => 'ff_meta_cachetime_id') // ID of input element
);
}
function ff_meta_section_one_callback() {
function section_one_callback() {
echo 'This Plugin provides shortcodes to display information from the Freifunk meta.json.';
}
function ff_meta_cachetime_callback() {
function cachetime_callback() {
$time = get_option( 'ff_meta_cachetime', FF_META_DEFAULT_CACHETIME );
echo "<input type='number' name='ff_meta_cachetime' id='ff_meta_cachetime_id' class='small-text code' value='$time' /> minutes"
."<p class='description'>Data from external URLs is cached for this number of minutes.</p>";
}
function ff_meta_city_callback() {
if (false === ($directory = ff_meta_getmetadata ( FF_META_DEFAULT_DIR ))) {
function city_callback() {
if (false === ($directory = FF_Meta_Externaldata::get ( FF_META_DEFAULT_DIR ))) {
// TODO: error handling
return;
}
@ -287,7 +375,7 @@ function ff_meta_city_callback() {
echo "<p class='description'>This is the default city parameter.</p>";
}
function ff_meta_options_page() {
function options_page() {
?>
<div class="wrap">
<h2>Freifunk Meta Plugin Options</h2>
@ -300,8 +388,12 @@ function ff_meta_options_page() {
<?php
}
register_uninstall_hook( __FILE__, 'ff_meta_uninstall_hook' );
function ff_meta_uninstall_hook() {
function uninstall_hook() {
delete_option( 'ff_meta_city' );
delete_option( 'ff_meta_cachetime' );
}
}
$ffmeta = new FF_Meta;
$ffmeta->register_stuff();