#define BLYNK_TEMPLATE_ID "YourTemplateID"
#define BLYNK_TEMPLATE_NAME "DeliveryBot"
#define BLYNK_AUTH_TOKEN "YourAuthToken"

#include <WiFi.h>
#include <BlynkSimpleEsp32.h>

// WiFi credentials
char ssid[] = "ZTE_F19AAA";
char pass[] = "6EB62JA52P";

// Stepper motor pins
const int stepPins[4] = {2, 4, 6, 8};
const int dirPins[4]  = {3, 5, 7, 9};

// Constants
const int STEP_DELAY = 800;
const int CM_TO_STEPS = 1; // 1 cm = 1 rev = 1 step (as per your assumption)

// Blynk virtual pins
#define VROOM1_BTN V1
#define VROOM2_BTN V2
#define VROOM3_BTN V3
#define VRETURN_BTN V4
#define VLED1 V5
#define VLED2 V6
#define VLED3 V7

void setup() {
  Serial.begin(115200);
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);

  for (int i = 0; i < 4; i++) {
    pinMode(stepPins[i], OUTPUT);
    pinMode(dirPins[i], OUTPUT);
  }
}

// Set all motors' direction
void setDirection(bool fl, bool fr, bool bl, bool br) {
  digitalWrite(dirPins[0], fl);
  digitalWrite(dirPins[1], fr);
  digitalWrite(dirPins[2], bl);
  digitalWrite(dirPins[3], br);
}

// Step all motors
void stepMotors(int steps) {
  for (int i = 0; i < steps; i++) {
    for (int j = 0; j < 4; j++) digitalWrite(stepPins[j], HIGH);
    delayMicroseconds(STEP_DELAY);
    for (int j = 0; j < 4; j++) digitalWrite(stepPins[j], LOW);
    delayMicroseconds(STEP_DELAY);
  }
}

// Movements
void moveForward(int cm) {
  Serial.println("Forward");
  setDirection(HIGH, HIGH, HIGH, HIGH);
  stepMotors(cm * CM_TO_STEPS);
}

void moveBackward(int cm) {
  Serial.println("Backward");
  setDirection(LOW, LOW, LOW, LOW);
  stepMotors(cm * CM_TO_STEPS);
}

void turnRight(int steps) {
  Serial.println("Right");
  setDirection(HIGH, LOW, HIGH, LOW);
  stepMotors(steps);
}

void turnLeft(int steps) {
  Serial.println("Left");
  setDirection(LOW, HIGH, LOW, HIGH);
  stepMotors(steps);
}

// Blynk Button Actions
BLYNK_WRITE(VROOM1_BTN) {
  int pressed = param.asInt();
  if (pressed) {
    Blynk.virtualWrite(VLED1, 255);
    moveForward(100);
    turnRight(150);
    moveForward(30);
    delay(60000);
    moveBackward(30);
    turnRight(150);
    moveForward(100);
    Blynk.virtualWrite(VLED1, 0);
  }
}

BLYNK_WRITE(VROOM2_BTN) {
  int pressed = param.asInt();
  if (pressed) {
    Blynk.virtualWrite(VLED2, 255);
    moveForward(120);
    delay(60000);
    moveBackward(120);
    Blynk.virtualWrite(VLED2, 0);
  }
}

BLYNK_WRITE(VROOM3_BTN) {
  int pressed = param.asInt();
  if (pressed) {
    Blynk.virtualWrite(VLED3, 255);
    moveForward(100);
    turnLeft(150);
    moveForward(30);
    delay(60000);
    moveBackward(30);
    turnLeft(150);
    moveForward(100);
    Blynk.virtualWrite(VLED3, 0);
  }
}

BLYNK_WRITE(VRETURN_BTN) {
  int pressed = param.asInt();
  if (pressed) {
    Serial.println("Return to base triggered.");
    // You can set a default return logic or home position
    moveBackward(30);
    turnRight(150);
    moveForward(100);
  }
}

void loop() {
  Blynk.run();
}
"""

with open("/mnt/data/delivery_bot_blynk_esp32.ino", "w") as f:
    f.write(code)

"/mnt/data/delivery_bot_blynk_esp32.ino"