added historical data capturing curl.php

website/curl.php

@@ -127,7 +127,46 @@ function makeMarker(int $id){ // generate appropriate markers based on latest JS
 }
 
 
+function appendJSON($filename, $data){ // create historical json data for documentation over time
 
+    // read the file if present
+    $handle = @fopen($filename, 'r+');
+
+    // create the file if needed
+    if ($handle === null)
+    {
+        $handle = fopen($filename, 'w+');
+    }
+
+    if ($handle)
+    {
+        // seek to the end
+        fseek($handle, 0, SEEK_END);
+
+        // are we at the end of is the file empty
+        if (ftell($handle) > 0)
+        {
+            // move back a byte
+            fseek($handle, -1, SEEK_END);
+
+            // add the trailing comma
+            fwrite($handle, ',', 1);
+
+            // add the new json string
+            fwrite($handle, json_encode($data) . ']');
+        }
+        else
+        {
+            // write the first event inside an array
+            fwrite($handle, json_encode(array($data)));
+        }
+
+            // close the handle on the file
+            fclose($handle);
+    }
+
+
+}
 
 
 //// make date time file------
@@ -249,14 +288,18 @@ function callAPI($url){
         map.addLayer(Stamen_Toner);
 
 
-        //for each scooter in $scooters array, request status and construct marker
+        //the magic: for each scooter in $scooters array, request status and construct marker
         <?php 
 
-        $filename = "./latestData.json";
+        $filename = "./latestData.json"; //latest locations, 1 entry per scooter
+        $filename_history = "./historicalData.json"; //historical locations
 
         // check how old the latest json is
-        if (time()-filemtime($filename) > 60) {
-          $arrayToEcho = saveLatestJSON();
+        if (time()-filemtime($filename) > 60) { //if older than 60 seconds
+            $arrayToEcho = saveLatestJSON();
+            //append to historical json
+            appendJSON($filename_history, $arrayToEcho);
+
             $latestData = json_encode($arrayToEcho, JSON_FORCE_OBJECT); // force object accepts 0 as a key for the array and not NULL
             file_put_contents($filename, $latestData, LOCK_EX);
 

website/historicalData.json

@@ -0,0 +1 @@
+[[{"ID":0,"lastPos":"52.57619, 13.358061","lastLocationUpdate":"2020-10-09T08:00:29Z","isRentable":true,"state":"ACTIVE","name":"artist name 0","title":"title 0","desc":"desciption 0"},{"ID":1,"lastPos":"52.55619, 13.358061","lastLocationUpdate":"2020-10-09T08:00:29Z","isRentable":true,"state":"ACTIVE","name":"artist name 1","title":"title 1","desc":"desciption 1"},{"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"}]]