refactor(hardware): clean up arduino code

hardware/logistech/logistech.ino

@@ -0,0 +1,139 @@
+#include <ESP8266WiFi.h>    // for WiFi
+#include <Wiegand.h>
+#include <WiFiClient.h>
+#include <ESP8266HTTPClient.h>
+#include <SoftwareSerial.h> // for gps
+
+#define WIEGAND_DATA_0 D3 // Wiegand line pins
+#define WIEGAND_DATA_1 D4
+#define MAX_CODES 100   // Maximum number of codes to store
+
+// Define the pins used for the GPS module
+const int gps_rx_pin = 8;   // GPS module TX pin to Node MCU D8 pin
+const int gps_tx_pin = 7;   // GPS module RX pin to Node MCU D7 pin
+
+// Create a SoftwareSerial object for the GPS module
+SoftwareSerial gp_SS(gps_rx_pin, gps_tx_pin);
+
+static const uint32_t BAUD_RATE = 9600;
+
+// connecting to wifi
+const char* ssid = "PLDTHOMEFIBR0dae0";
+const char* password = "PLDTWIFI44ffx";
+
+WIEGAND wg;
+
+const String SERVER_NAME = "http://192.168.1.9:5001/api/v1";
+const String GPS_API_PATH = "/product-item/gps";
+
+uint32_t codes[MAX_CODES];   // Array to store previous codes
+int num_codes = 0;   // Number of codes currently stored
+
+void setup() {
+  Serial.begin(BAUD_RATE);
+
+  // setting up connection with the wifi
+  WiFi.begin(ssid, password);
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(1000);
+    Serial.println("Connecting to WiFi...");
+
+    switch(WiFi.status()) {
+      case 6:
+        Serial.println("WRONG PASSWORD"); break;
+      case WL_DISCONNECTED:
+        Serial.println("DISCONNECTED"); break;
+      case WL_CONNECT_FAILED:
+        Serial.println("CONNECTION FAILED"); break;
+      case WL_IDLE_STATUS:
+        Serial.println("CHANGING STATUS"); break;
+      case WL_NO_SSID_AVAIL:
+        Serial.println("WIFI CANNOT BE REACHED"); break;
+    }
+  }
+  Serial.println("Connected to WiFi");
+  Serial.println(WiFi.localIP());
+
+
+  // once there is an internet connection.. set-up RFID reading
+  // default Wiegand Pin 3 and Pin 4 see image on README.md
+  // for non UNO board, use wg.begin(pinD0, pinD1) whokmijmijmere pinD0 and pinD1
+  // are the pins connected to D0 and D1 of wiegand reader respectively.
+  // wg.begin(WIEGAND_DATA_0, WIEGAND_DATA_1, true, false);
+  pinMode(WIEGAND_DATA_0, INPUT_PULLUP);
+  pinMode(WIEGAND_DATA_1, INPUT_PULLUP);
+  wg.begin(WIEGAND_DATA_0, WIEGAND_DATA_1);
+
+  // after setting-up RFID reader, set-up GPS module
+  gp_SS.begin(BAUD_RATE); // for gps
+}
+
+void loop() {
+  if (wg.available()) {
+    uint32_t new_code = wg.getCode();   // Get the new Wiegand code
+
+    // Check if the new code is unique
+    bool is_unique = is_code_unique(codes, new_code, num_codes);
+
+    // Check WiFi connection status
+    if (WiFi.status() == WL_CONNECTED) {
+      // If the new code is unique, print it and store it in the codes array
+      if (is_unique) {
+        codes[num_codes++] = new_code;
+        send_post_request("{\"longitude\": 48.2082, \"latitude\": 16.3738, \"productItemId\": \"" + String (codes[num_codes]) + "\"}", GPS_API_PATH);
+      }
+
+      Serial.print("New unique code: ");
+      Serial.println(new_code, HEX);
+      Serial.print("Total unique codes: ");
+      Serial.println(num_codes);
+    } else {
+      Serial.println("WiFi Disconnected");
+    }
+  }
+
+  // For GPS
+  if (gp_SS.available() > 0) {
+    char c = gp_SS.read(); // while acquiring signal, read the incoming byte
+
+    static char buffer[80];
+    static int i = 0;
+    buffer[i++] = c;   // generating string
+    bool end_of_string = c == '\n';
+    if (end_of_string) {
+      send_post_request("{\"longitude\": 48.2082, \"latitude\": 16.3738, \"productItemId\": \"" + String(buffer) + "\"}", GPS_API_PATH);
+    }
+  }
+}
+
+bool is_code_unique(u_int32_t unique_codes[], u_int32_t new_code, int num_codes) {
+  for (int i = 0; i < num_codes; i++) {
+    if (new_code == unique_codes[i]) {
+        return false;
+    }
+  }
+
+  return true;
+}
+
+void send_post_request(String request_payload, String api_path) {
+  WiFiClient client;
+  HTTPClient http;
+
+  http.begin(client, SERVER_NAME + api_path);
+  http.addHeader("Content-Type", "application/json");
+
+  int http_response_status_code = http.POST(request_payload);
+
+  Serial.print("HTTP response status code: ");
+  Serial.println(http_response_status_code);
+
+  if (http_response_status_code > 0) {
+    String response = http.getString();
+    Serial.print("Response: ");
+    Serial.println(response);
+  }
+
+  // Free resources
+  http.end();
+}