New plugin to add location data for posts that only contain latitude and longitude.

geocoordinates/geocoordinates.php

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+<?php
+/**
+ * Name: Geocoordinates
+ * Description: Use the OpenCage Geocoder http://geocoder.opencagedata.com to resolve nearest populated location for given latitude, longitude. Derived from "geonames"
+ * Version: 0.1
+ * Author: Michael Vogel <https://pirati.ca/profile/heluecht>
+ */
+
+function geocoordinates_install() {
+	register_hook('post_local', 'addon/geocoordinates/geocoordinates.php', 'geocoordinates_post_hook');
+	register_hook('post_remote', 'addon/geocoordinates/geocoordinates.php', 'geocoordinates_post_hook');
+}
+
+
+function geocoordinates_uninstall() {
+	unregister_hook('post_local',    'addon/geocoordinates/geocoordinates.php', 'geocoordinates_post_hook');
+	unregister_hook('post_remote',    'addon/geocoordinates/geocoordinates.php', 'geocoordinates_post_hook');
+}
+
+function geocoordinates_resolve_item(&$item) {
+	if((!$item["coord"]) || ($item["location"]))
+		return;
+
+	$key = get_config("geocoordinates", "api_key");
+	if ($key == "")
+		return;
+
+	$language = get_config("geocoordinates", "language");
+	if ($language == "")
+		$language = "de";
+
+	$result = Cache::get("geocoordinates:".$language.":".$item["coord"]);
+	if (!is_null($result)) {
+		$item["location"] = $result;
+		return;
+	}
+
+	$coords = explode(' ',$item["coord"]);
+
+	$s = fetch_url("https://api.opencagedata.com/geocode/v1/json?q=".$coords[0].",".$coords[1]."&key=".$key."&language=".$language);
+
+	if (!$s) {
+		logger("API could not be queried", LOGGER_DEBUG);
+		return;
+	}
+
+	$data = json_decode($s);
+
+	if ($data->status->code != "200") {
+		logger("API returned error ".$data->status->code." ".$data->status->message, LOGGER_DEBUG);
+		return;
+	}
+
+	if (($data->total_results == 0) OR (count($data->results) == 0)) {
+		logger("No results found", LOGGER_DEBUG);
+		return;
+	}
+
+	$item["location"] = $data->results[0]->formatted;
+
+	logger("Got location for coordinates ".$item["coord"].": ".$item["location"], LOGGER_DEBUG);
+
+	if ($item["location"] != "")
+		Cache::set("geocoordinates:".$language.":".$item["coord"], $item["location"]);
+}
+
+function geocoordinates_post_hook($a, &$item) {
+	geocoordinates_resolve_item($item);
+}
+
+function geocoordinates_plugin_admin(&$a,&$o) {
+
+	$t = get_markup_template("admin.tpl", "addon/geocoordinates/");
+
+	$o = replace_macros($t, array(
+		'$submit' => t('Save Settings'),
+		'$api_key' => array('api_key', t('API Key'),  get_config('geocoordinates', 'api_key' ), ''),
+		'$language' => array('language', t('Language code (IETF format)'),  get_config('geocoordinates', 'language' ), ''),
+	));
+}
+
+function geocoordinates_plugin_admin_post(&$a) {
+	$api_key  = ((x($_POST,'api_key')) ? notags(trim($_POST['api_key']))   : '');
+	set_config('geocoordinates','api_key',$api_key);
+
+	$language  = ((x($_POST,'language')) ? notags(trim($_POST['language']))   : '');
+	set_config('geocoordinates','language',$language);
+	info(t('Settings updated.'). EOL);
+}

geocoordinates/templates/admin.tpl

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+{{include file="field_input.tpl" field=$api_key}}
+{{include file="field_input.tpl" field=$language}}
+<div class="submit"><input type="submit" name="page_site" value="{{$submit}}" /></div>

geocoordinates/test.php

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+<?php
+
+require_once("boot.php");
+
+if(@is_null($a)) {
+	$a = new App;
+}
+
+if(is_null($db)) {
+	@include(".htconfig.php");
+	require_once("dba.php");
+	$db = new dba($db_host, $db_user, $db_pass, $db_data);
+	unset($db_host, $db_user, $db_pass, $db_data);
+};
+
+$a->set_baseurl(get_config('system','url'));
+
+require_once("addon/geocoordinates/geocoordinates.php");
+
+function geocoordinates_resolve_item2(&$item) {
+	if((!$item["coord"]) || ($item["location"]))
+                return;
+
+	$key = get_config("geocoordinates", "api_key");
+	if ($key == "")
+		return;
+
+	$language = get_config("geocoordinates", "language");
+	if ($language == "")
+		$language = "de";
+
+        $result = Cache::get("geocoordinates:".$language.":".$item["coord"]);
+        if (!is_null($result)) {
+		$item["location"] = $result;
+		return;
+        }
+
+        $coords = explode(' ',$item["coord"]);
+
+        $s = fetch_url("https://api.opencagedata.com/geocode/v1/json?q=".$coords[0].",".$coords[1]."&key=".$key."&language=".$language);
+
+	if (!$s) {
+		logger("API could not be queried", LOGGER_DEBUG);
+		return;
+	}
+
+	$data = json_decode($s);
+
+	if ($data->status->code != "200") {
+		logger("API returned error ".$data->status->code." ".$data->status->message, LOGGER_DEBUG);
+		return;
+	}
+
+	if (($data->total_results == 0) OR (count($data->results) == 0)) {
+		logger("No results found", LOGGER_DEBUG);
+		return;
+	}
+
+	$item["location"] = $data->results[0]->formatted;
+
+        Cache::set("geocoordinates:".$language.":".$item["coord"], $item["location"]);
+
+}
+
+$r = q("SELECT coord, location FROM item WHERE guid='stat1721635584fdaf31b19541063667' LIMIT 1");
+$item = $r[0];
+geocoordinates_resolve_item2($item);
+print_r($item);
+?>