#!/usr/bin/env python3
import RPi.GPIO as GPIO
import time
import smtplib
from email.mime.text import MIMEText

# ---------------------------
# Configuration and Setup
# ---------------------------
# GPIO Pin Configuration
SENSOR_PIN = 17  # GPIO pin connected to the sensor signal wire
BUZZER_PIN = 18  # GPIO pin connected to the buzzer

# GPIO Setup
GPIO.setmode(GPIO.BCM)
GPIO.setup(SENSOR_PIN, GPIO.IN)  # (If needed, add a pull-up or pull-down here)
GPIO.setup(BUZZER_PIN, GPIO.OUT)

# Buzzer Setup with PWM
buzzer_freq = 1000  # Frequency in Hz
pwm = GPIO.PWM(BUZZER_PIN, buzzer_freq)
pwm.start(0)

# Startup Grace Period: no alerts during the first 15 minutes after power-up
startup_time = time.time()
startup_grace_period = 15 * 60  # 15 minutes in seconds

# Cooldown between alerts: only one alert every 5 minutes
cooldown_period = 5 * 60  # 5 minutes in seconds
last_alert_time = 0

# Inactivity threshold: 30 minutes without detected movement
inactivity_threshold = 30 * 60  # 30 minutes in seconds
# Initialize last movement time to the time the script starts
last_movement_time = time.time()

# Email Configuration (Using Gmail SMTP)
smtp_server = "smtp.gmail.com"
smtp_port = 587
sender_email = "sales@pixelprint.la"      # Your sender email address
sender_password = "zeespitpjcbzwsjk"         # Your Gmail app password
recipient_email = "6304792364@vtext.com"       # Recipient's SMS gateway address

# ---------------------------
# Function Definitions
# ---------------------------
def trigger_buzzer(duration=3):
    """Activate the buzzer for the specified duration (in seconds)."""
    print("Buzzer activated!")
    pwm.ChangeDutyCycle(50)  # Turn buzzer on (50% duty cycle)
    time.sleep(duration)
    pwm.ChangeDutyCycle(0)   # Turn buzzer off

def send_email_alert():
    """Send an email alert for inactivity."""
    subject = "Inactivity Alert!"
    body = "No movement detected on the press for 30 minutes."
    msg = MIMEText(body)
    msg["Subject"] = subject
    msg["From"] = sender_email
    msg["To"] = recipient_email

    try:
        server = smtplib.SMTP(smtp_server, smtp_port)
        server.starttls()
        server.login(sender_email, sender_password)
        server.sendmail(sender_email, recipient_email, msg.as_string())
        print("Email alert sent!")
    except Exception as e:
        print(f"Failed to send email: {e}")
    finally:
        server.quit()

# ---------------------------
# Main Loop
# ---------------------------
try:
    print("Monitoring inactivity...")
    while True:
        current_time = time.time()

        # --- Startup Grace Period ---
        if current_time - startup_time < startup_grace_period:
            # During startup, update last_movement_time if movement is detected, but don't send alerts.
            if GPIO.input(SENSOR_PIN) == GPIO.LOW:  # Assuming sensor LOW indicates movement
                last_movement_time = current_time
                print("Startup period: Movement detected, timer reset.")
            else:
                print("Startup period: No movement.")
            time.sleep(1)
            continue  # Skip alert check until grace period is over

        # --- Normal Operation ---
        # Debug: Print sensor state and timing info
        print(f"Sensor state: {GPIO.input(SENSOR_PIN)}")
        print(f"Current time: {current_time}, Last movement time: {last_movement_time}")
        print(f"Time since last movement: {(current_time - last_movement_time) / 60:.2f} minutes")

        # Update last_movement_time if movement is detected.
        if GPIO.input(SENSOR_PIN) == GPIO.LOW:  # (Adjust if your sensor logic is reversed)
            last_movement_time = current_time
            print("Movement detected. Timer reset.")

        # Check for inactivity: if no movement for the inactivity threshold, send an alert.
        if current_time - last_movement_time >= inactivity_threshold:
            # Only send an alert if sufficient time has passed since the last alert.
            if current_time - last_alert_time >= cooldown_period:
                print("Inactivity threshold reached. Triggering alert...")
                trigger_buzzer(3)
                send_email_alert()
                last_alert_time = current_time  # Update last alert time
                last_movement_time = current_time  # Reset timer to avoid repeated alerts

        time.sleep(1)  # Check every second

except KeyboardInterrupt:
    print("Exiting program...")

finally:
    GPIO.cleanup()