realtime api fetching and storing curl.php

website/curl.php

@@ -3,6 +3,15 @@
 // The api key from Scooty's app/account: iPtAHWdOVLEtgkaymXoMHVVg
 // Below is the static html to generate the map, it can also be done more dynamically using https://github.com/LuminFire/leaflet-php  but that might be overkill
 
+//debugging, enable all error reporting
+// ini_set('display_errors', 1);
+// ini_set('display_startup_errors', 1);
+// error_reporting(E_ALL);
+//measure script execution time
+$start_time = microtime(true); 
+$a=1; 
+
+
 
 // array of scooters, artist, title, description
 global $scooters;
@@ -21,14 +30,17 @@ $scooters = array(
 
 // for each scooter in array get the json (TODO, for each, safe to file/database?) $scooters is a multidimensional array: $scooter[0][0] = the first data (api url) of the first scooter,  $scooter[1][0] = the first data (api url) of the second scooter,  $scooter[0][1] = the artist name of the first scooter etcetc.
 
-$id = 0; //get the first scooter for now
+//$id = 0; //get the first scooter for now
 
 
+function saveLatestJSON(){
+global $scooters; //"import" the global variable into the function's scope
     
-
+    //TODO if latestData.json = older than ..2 minutes...call the API again
-function makeMarker(int $id){
+    $id = 0; //start id
-    global $scooters; //"import" the global variable into the function's scope
+    foreach($scooters as $item) {
         $getJSON = callAPI($scooters[$id][0]); //abstract callAPI for neater reuse
+        // GET RID OF JSON DECODE!
         $arr = json_decode($getJSON, true); // decode JSON data to PHP associative array
         // access values from the associative array
         $lat = $arr["data"]["attributes"]["lat"];  // get lattitude
@@ -42,6 +54,56 @@ function makeMarker(int $id){
         $tit = $scooters[$id][2]; // get the works title
         $des = $scooters[$id][3]; // get the works description
 
+        //construct json with latest data
+        $latestData[] = array( "ID" => $id,
+                            "lastPos" => $pos,
+                            "lastLocationUpdate" => $lst,
+                            "isRentable" => $rnt,
+                            "state" => $act,
+                            "name" => $nam,
+                            "title" => $tit,
+                            "desc" => $des);
+        $id++;
+    }
+
+    return $latestData; //return array
+
+}
+    
+// THIS ONLY NEEDS TO RUN EVERY 1 or 2 minutes, possibly in the background, als this should construct historical json as per tom martins post here: https://stackoverflow.com/questions/7895335/append-data-to-a-json-file-with-php/7895384
+$arrayToEcho = saveLatestJSON();
+    $latestData = json_encode($arrayToEcho, JSON_FORCE_OBJECT); // force object accepts 0 as a key for the array and not NULL
+    
+   $file = './latestData.json';
+    file_put_contents($file, $latestData, LOCK_EX);
+
+
+//TODO make historical json file..
+//see: https://stackoverflow.com/questions/7895335/append-data-to-a-json-file-with-php/7895384
+    //add something like:
+//     $inp = file_get_contents('./latestData.json');
+// $tempArray = json_decode($inp);
+// $tempArray[] .= $latestData;
+// $jsonData = json_encode($tempArray);
+// file_put_contents('./latestData.json', $jsonData);
+   
+
+function makeMarker(int $id){ // generate appropriate markers based on latest JSON
+
+    $readJSON = file_get_contents('./latestData.json'); //read latest data
+    $arr = json_decode($readJSON, true);
+
+    $pos = $arr[$id]["lastPos"];  // get last known position
+    $lst = $arr[$id]["lastLocationUpdate"];   // get time of last position
+    $rnt = $arr[$id]["isRentable"];  // check if scooter is rentable,  
+    $act = $arr[$id]["state"]; // check if scooter is ACTIVE or MAINTAINANCE
+    // access values from the multidimensional $scooters array
+    $nam = $arr[$id]["name"];  // get the artist name
+    $tit = $arr[$id]["title"];  // get the works title
+    $des = $arr[$id]["desc"];  // get the works description
+
+
+
     //check scooter status and construct marker with corresponding icon
 
     //check if scooter is rentable
@@ -64,14 +126,20 @@ function makeMarker(int $id){
     };        
 
     return $marker;
+
+
 }
 
 
+
+
+
 //// make date time file------
 
 
 
-// TODO save json to file?...mmm one big one? seperate ones, timestamped ones?
+
+///..mmm one big one? seperate ones, timestamped ones?
 // 60 second update interval
 
 // make timestamp file like original python one! to check for updates
@@ -100,9 +168,7 @@ function checkModified($file, $expiration){ //check if file is older than expira
 
 }
 
-function parseJSON(){
 
-}
 
 function callAPI($url){
         $curl = curl_init($url);
@@ -124,6 +190,7 @@ function callAPI($url){
 }
 
 
+
 ?>
 
 
@@ -196,6 +263,7 @@ function callAPI($url){
         $id = 0; //start id
             foreach($scooters as $item) {
                
+               // echo makeMarker($id);
                 echo makeMarker($id);
 
                 $id++;
@@ -219,3 +287,10 @@ function callAPI($url){
 </body>
 </html>
 
+<?php //end of measuring script execution time
+//end clock time in seconds 
+$end_time = microtime(true); 
+//calculate script execution time 
+$execution_time = ($end_time - $start_time); 
+echo " Execution time of script = ".$execution_time." sec"; 
+?>

website/latestData.json

@@ -0,0 +1 @@
+{"0":{"ID":0,"lastPos":"52.58619, 13.358061","lastLocationUpdate":"2020-10-09T08:00:29Z","isRentable":true,"state":"ACTIVE","name":"artist name 0","title":"title 0","desc":"desciption 0"},"1":{"ID":1,"lastPos":"52.58619, 13.358061","lastLocationUpdate":"2020-10-09T08:00:29Z","isRentable":true,"state":"ACTIVE","name":"artist name 1","title":"title 1","desc":"desciption 1"},"2":{"ID":2,"lastPos":"52.53619, 13.358061","lastLocationUpdate":"2020-10-09T08:00:29Z","isRentable":true,"state":"ACTIVE","name":"artist name 2","title":"title 2","desc":"desciption 2"}}