// STM32 Blue Pill SPI LCD Example
// Simulation: https://wokwi.com/projects/374780854731040769

#include "SPI.h"
#include "Adafruit_GFX.h"
#include "Adafruit_ILI9341.h"

#define TFT_DC PB7
#define TFT_CS PB6
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);

#define BOUTON_Pin PA15

// Authorized RFID IDs
const int authorized_ids[] = {460208478, 2435355610, 987654321};

void setup() {
  Serial.begin(115200);
  Serial.println("Wokwi Blue Pill SPI Demo Starting...");

  tft.begin();

  // Clear the screen
  tft.fillScreen(ILI9341_BLACK);

  // Display static text
  tft.setCursor(36, 120);
  tft.setTextColor(ILI9341_CYAN);
  tft.setTextSize(3);
  tft.println("Blue Pill");

  tft.setCursor(60, 160);
  tft.setTextColor(ILI9341_GREEN);
  tft.setTextSize(4);
  tft.println("STM32");
}

void loop() {
  static bool buttonPressed = false;
  static unsigned long lastDebounceTime = 0;
  static unsigned long debounceDelay = 50; // Adjust as needed

  // Read the state of the button
  bool buttonState = digitalRead(BOUTON_Pin);

  // Check if the button state has changed
  if (buttonState != buttonPressed) {
    lastDebounceTime = millis(); // Reset the debounce timer
  }

  // Check if the button has been in the same state for longer than the debounce delay
  if ((millis() - lastDebounceTime) > debounceDelay) {
    // If the button state has stabilized, perform the action
    if (buttonState == LOW) {
      // Display RFID information
      int id_choisi = choisir_id_aleatoire();
      bool autorise = verifier_autorisation(id_choisi);

      tft.fillScreen(ILI9341_BLACK); // Clear the screen

      tft.setCursor(20, 60);
      tft.setTextColor(ILI9341_WHITE);
      tft.setTextSize(2);
      tft.print("RFID ID: ");
      tft.println(id_choisi);

      tft.setCursor(20, 100);
      if (autorise) {
        tft.setTextColor(ILI9341_GREEN);
        tft.println("Authorized");
      } else {
        tft.setTextColor(ILI9341_RED);
        tft.println("Not Authorized");
      }

      // Wait for a short time to prevent rapid button presses
      delay(1000);
    }
  }
  // Update the button state
  buttonPressed = buttonState;
}

// Fonction pour choisir un RFID aléatoire
int choisir_id_aleatoire() {
  const int list_ids[] = {123456789, 987654321, 135792468, 246813579, 460208478, 2435355610, 2235355610, 221314350};
  return list_ids[random(0, sizeof(list_ids) / sizeof(list_ids[0]))];
}

// Fonction pour vérifier si le RFID est autorisé
bool verifier_autorisation(int id_choisi) {
  for (int i = 0; i < sizeof(authorized_ids) / sizeof(authorized_ids[0]); i++) {
    if (id_choisi == authorized_ids[i]) {
      return true;
    }
  }
  return false;
}