From aebd249237f5765c1b899a368b329ea18db9736f Mon Sep 17 00:00:00 2001
From: William <William@willy.club>
Date: Wed, 30 Mar 2022 08:51:46 +0000
Subject: [PATCH] Commit

---
 app/lib/App/Core/App.php             |  2 +-
 app/view/pages/race/live-results.php | 25 ++++++++++++++----
 public/race/simulator.php            |  6 +++--
 public/race/stream.php               | 39 ----------------------------
 public/race/sync.php                 | 27 +++++++++++++++++++
 5 files changed, 52 insertions(+), 47 deletions(-)
 delete mode 100644 public/race/stream.php
 create mode 100644 public/race/sync.php

diff --git a/app/lib/App/Core/App.php b/app/lib/App/Core/App.php
index 8d30419..2cb8820 100644
--- a/app/lib/App/Core/App.php
+++ b/app/lib/App/Core/App.php
@@ -72,7 +72,7 @@ class App
     /**
      * Turn data array into json response
      */
-    public function api(array $data, int $status_code = 200): void
+    public function api($data, int $status_code = 200): void
     {
         // set headers
         http_response_code($status_code);
diff --git a/app/view/pages/race/live-results.php b/app/view/pages/race/live-results.php
index 158682e..40a6dfe 100644
--- a/app/view/pages/race/live-results.php
+++ b/app/view/pages/race/live-results.php
@@ -1,6 +1,6 @@
 <h1>Live resultater</h1>
 <br>
-<table>
+<table id ="table">
     <tr>
         <th>Some shit</th>
         <th>Some shit</th>
@@ -8,9 +8,24 @@
 </table>
 
 <script>
-var es = new EventSource('stream.php');
-es.onmessage = function(event)
+hash = 0;
+async function doTheThang()
 {
-    console.log("New message", event.data);
-};
+    response = await fetch("sync.php?hash=" + hash);
+
+    if (response.status === 204)
+    {
+        return;
+    }
+
+    json = await response.json();
+
+    hash = json.hash;
+    data = json.data;
+
+    document.getElementById("table").innerHTML = json.data;
+}
+
+setInterval(function() { doTheThang() }, 1000)
+doTheThang();
 </script>
\ No newline at end of file
diff --git a/public/race/simulator.php b/public/race/simulator.php
index 3b409ad..4174d0c 100644
--- a/public/race/simulator.php
+++ b/public/race/simulator.php
@@ -1,12 +1,14 @@
 <?php $app = require '../../app/inc.php';
 
+// uh oh.. stinky
+
 $cardreader = $app->model('Cardreader');
 
 if ($_SERVER['REQUEST_METHOD'] === 'POST')
 {
-    if (isset($_POST['cardnumber']) && strlen($_POST['cardnumber']) !== 0)
+    if (isset($_POST['cardnumber']) && strlen((string)$_POST['cardnumber']) !== 0)
     {
-        $cardnumber = $_POST['cardnumber'];
+        $cardnumber = (string)$_POST['cardnumber'];
 
         try {
             $code = $cardreader->receive($cardnumber, 5);
diff --git a/public/race/stream.php b/public/race/stream.php
deleted file mode 100644
index 108591d..0000000
--- a/public/race/stream.php
+++ /dev/null
@@ -1,39 +0,0 @@
-<?php $app = require '../../app/inc.php';
-
-use App\Teamtable\TeamMapper;
-use App\Timetable\TimeMapper;
-use App\SSE\EventLoop;
-use App\SSE\StopEventLoopException;
-
-$teamMapper = new TimeMapper($app->database->conn);
-$timeMapper = new TimeMapper($app->database->conn);
-
-/**
- * Send events to client with Server-Sent Events(SSE)
- */
-$sse = new EventLoop();
-$sse->interval = 1; 
-
-$persist_obj = new class {
-        public ?int $prev_last_insert = NULL;
-    };
-
-$sse->start(
-    function () use ($timeMapper, $teamMapper, &$persist_obj) {
-
-        $time = $timeMapper->getLatest();
-
-        if ($time)
-        {
-            $last_insert = $time->date->getTimestamp();
-
-            if ( $persist_obj->prev_last_insert == NULL
-                || $last_insert > $persist_obj->prev_last_insert
-            ) {
-                $persist_obj->prev_last_insert = $last_insert;
-
-                return($timeMapper->getAll());
-            }
-        }
-    }
-);
\ No newline at end of file
diff --git a/public/race/sync.php b/public/race/sync.php
new file mode 100644
index 0000000..1f2217c
--- /dev/null
+++ b/public/race/sync.php
@@ -0,0 +1,27 @@
+<?php $app = require '../../app/inc.php';
+/**
+ * We originally wanted to use SSE for this, but the hosting provider
+ * did not support that so we resorted to simple polling instead
+ */
+
+use App\Teamtable\TeamMapper;
+use App\Timetable\TimeMapper;
+
+$teamMapper = new TimeMapper($app->database->conn);
+$timeMapper = new TimeMapper($app->database->conn);
+
+$prev_hash = (int)filter_input(INPUT_GET, 'hash');
+
+$times = $timeMapper->getAll();
+
+$hash = crc32(serialize($timeMapper->getAll()));
+
+if ($prev_hash !== $hash)
+{
+    $app->api([
+            "hash" => $hash,
+            "data" => $times
+        ]);
+}
+// return nothing
+http_response_code(204);
\ No newline at end of file