delete entries in statistic

app/public/delete_statistics.php

@@ -0,0 +1,21 @@
+<?php
+    session_start();
+    include("../scripts/connection.php");
+    include("../scripts/functions.php");
+    $user_data = check_login($con);
+
+    if($_SERVER['REQUEST_METHOD'] == "POST") {
+        try {
+            $stmt = $con->prepare("DELETE FROM Punkte WHERE m_id = ? AND s_id = ?");
+            $stmt->bindParam(1, $_POST["m_id"], PDO::PARAM_INT);
+            $stmt->bindParam(2, $_POST["s_id"], PDO::PARAM_INT);
+            $stmt->execute();
+        } catch(PDOException $e) {
+            handle_pdo_exception($e);
+        }
+    }
+
+    $con = null;
+    header("Location: statistik.php");
+    die;
+?>

app/public/js/edit_table.js

@@ -16,6 +16,7 @@ function init() {
     team_edit_button();
     team_delete_button();
     station_delete_button();
+    statistic_delete_button();
 }
 
 var selected = null;
@@ -124,4 +125,18 @@ function station_delete_button() {
             }
         }
     }
+}
+
+function statistic_delete_button() {
+    var button = document.getElementById('delete_statistic');
+    if(button != null) {
+        button.onclick = function() {
+            var row = document.getElementsByClassName('row selected')[0];
+            document.getElementById('m_id_delete').value = row.id;
+            let confirmAction = confirm("Wirklich löschen?");
+            if (confirmAction) {
+                this.form.submit();
+            }
+        }
+    }
 }

app/public/statistik.php

@@ -48,6 +48,7 @@
     </div>
     <?php
         if ($session != "total-score") {
+            //add edit button
             echo "<div>
                 <form action=\"edit_statistics.php\" method=\"get\">
                     <input type=\"button\" id=\"edit_statistic\" value=\"Eintrag bearbeiten\" class=\"edit\" disabled=true/>
@@ -55,6 +56,14 @@
                     <input type=\"hidden\" id=\"station_id\" name=\"s_id\" value=\"". $session . "\"/>
                 </form>
             </div>";
+            //add delete button
+            echo "<div>
+                <form action=\"delete_statistics.php\" method=\"post\">
+                    <input type=\"button\" id=\"delete_statistic\" value=\"Löschen\" class=\"edit\" disabled=\"true\"/>
+                    <input type=\"hidden\" id=\"m_id_delete\" name=\"m_id\"/>
+                    <input type=\"hidden\" id=\"s_id_delete\" name=\"s_id\" value=\"" . $session . "\"/>
+                </form>
+            </div>";
     } ?>
     <div class="table-div">
         <table id="table">