server modify and arduino sketch editting

src/arduino/card_scanner.ino

@@ -1,2 +1,36 @@
-void setup(){}
-void loop(){}
+// imports 
+#include <SPI.h>
+#include <MFRC522.h>
+
+
+// Pin Setting
+#define RST_PIN1 9
+#define SS_PIN1 10
+
+#define RST_PIN2 5
+#define SS_PIN2 6
+
+#define RST_PIN3 2
+#define SS_PIN3 3
+
+// RFID-Module Instances
+MFRC522 mfrc522_1(SS_PIN1, RST_PIN1);
+MFRC522 mfrc522_2(SS_PIN2, RST_PIN2);
+MFRC522 mfrc522_3(SS_PIN3, RST_PIN3);
+
+// Setup
+void setup() {
+    // Serial Begin
+  Serial.begin(9600);
+  // SPI start
+  SPI.begin();
+
+  // Initialisation of Modules
+  mfrc522_1.PCD_Init();
+  mfrc522_2.PCD_Init();
+  mfrc522_3.PCD_Init();
+}
+
+void loop() {
+  // reading of triple signal
+}

src/server/server.js

@@ -3,22 +3,81 @@ const express = require('express');
 const http = require('http');
 const schedule = require('node-schedule');
 const axios = require('axios');
+const { SerialPort } = require('serialport');
+const { ReadlineParser } = require('@serialport/parser-readline');
+const fs = require('fs');
+const cors = require('cors');
+
+
+// Start Express and define port
 const app = express();
+const serverPort = 3000;
 
-// Shedule Format (* * * * *) (Sec(0-59), Min(0-59), Hours(0-23), Day (1-31), Month (0-11))
+// Set Cors Policy
+app.use(cors());
+app.use(express.json());
+app.use(express.static('public'));
 
+// Setting of Port of Arduino
+const arduinoPort = new SerialPort({
+  path: 'COM3',
+  baudRate: 9600
+});
 
-const job = schedule.scheduleJob('*/15 * * * *', () => {
-    const clientURL = 'http://localhost:80';
+// Server and Client information
+const clientURL = 'http://localhost:80';
 
-axios.get(clientURL)
-  .then((response) => {
-  })
-  .catch((error) => {
-  });
+// fetching data from Serialport: Getting Card Information which is in the middle
+function waitForData() {
+  return new Promise((resolve) => {
+    const parser = arduinoPort.pipe(new ReadlineParser({ delimiter: '\r\n' }));
+    parser.once('data', (data) => {
+      resolve(data);
+    });
   });
+}
+
+// fetching data from Serialport: Getting Hand Information of the Player
+function waitForData(playerid) {
+  return "coming soon!"
+}
+
+// Get Request for Playerhand
+app.get('/cardinmyhand/:playerid', async (req, res) => {
+  try {
+    const playerid = req.params.playerid;
+    const data = await waitForData(playerid); // Warte auf Daten von der seriellen Schnittstelle
+    res.send(data); // Sende die Daten an den Client
+  } catch (error) {
+    res.status(500).send('Fehler beim Lesen der Daten');
+  }
+});
+
+// Get Request for Card in the middle
+app.get('/cardinthemiddle', async (req, res) => {
+  try {
+    const data = await waitForData(); // Warte auf Daten von der seriellen Schnittstelle
+    res.send(data); // Sende die Daten an den Client
+  } catch (error) {
+    res.status(500).send('Fehler beim Lesen der Daten');
+  }
+});
+
+
+
+
+// // Shedule Format (* * * * *) (Sec(0-59), Min(0-59), Hours(0-23), Day (1-31), Month (0-11))
+// const job = schedule.scheduleJob('*/15 * * * *', () => {
+    
+
+// axios.get(clientURL)
+//   .then((response) => {
+//   })
+//   .catch((error) => {
+//   });
+//   });
 
 // Port Definition
-app.listen(3000, () => {
-  console.log('Backend-Server running on port 3000...');
+app.listen(serverPort, () => {
+  console.log(`Server läuft auf http://localhost:${serverPort}`);
 });