'''
  ____    _    ____      _    
 / ___|  / \  |  _ \    / \   
 \___ \ / _ \ | |_) |  / _ \  
  ___) / ___ \|  _ <  / ___ \ 
 |____/_/   \_\_| \_\/_/   \_\
                              
Script that starts at the boot of the RPI (with cron)

@reboot sleep 30 && /usr/bin/python3 /var/www/moduleair_pro_4g/SARA/reboot/start.py >> /var/www/moduleair_pro_4g/logs/app.log 2>&1

/usr/bin/python3 /var/www/moduleair_pro_4g/SARA/reboot/start.py

'''
import serial
import time
import sys
import json
import re
import sqlite3

# database connection
conn = sqlite3.connect("/var/www/nebuleair_pro_4g/sqlite/sensors.db")
cursor = conn.cursor()

#get config data from SQLite table
def load_config_sqlite():
    """
    Load configuration data from SQLite config table
    
    Returns:
        dict: Configuration data with proper type conversion
    """
    try:

        # Query the config table
        cursor.execute("SELECT key, value, type FROM config_table")
        rows = cursor.fetchall()
        
        # Create config dictionary
        config_data = {}
        for key, value, type_name in rows:
            # Convert value based on its type
            if type_name == 'bool':
                config_data[key] = value == '1' or value == 'true'
            elif type_name == 'int':
                config_data[key] = int(value)
            elif type_name == 'float':
                config_data[key] = float(value)
            else:
                config_data[key] = value
        
        return config_data
        
    except Exception as e:
        print(f"Error loading config from SQLite: {e}")
        return {}

def update_sqlite_config(key, value):
    """
    Updates a specific key in the SQLite config_table with a new value.

    :param key: The key to update in the config_table.
    :param value: The new value to assign to the key.
    """
    try:

        # Check if the key exists and get its type
        cursor.execute("SELECT type FROM config_table WHERE key = ?", (key,))
        result = cursor.fetchone()
        
        if result is None:
            print(f"Key '{key}' not found in the config_table.")
            conn.close()
            return
        
        # Get the type of the value from the database
        value_type = result[0]
        
        # Convert the value to the appropriate string representation based on its type
        if value_type == 'bool':
            # Convert Python boolean or string 'true'/'false' to '1'/'0'
            if isinstance(value, bool):
                str_value = '1' if value else '0'
            else:
                str_value = '1' if str(value).lower() in ('true', '1', 'yes', 'y') else '0'
        elif value_type == 'int':
            str_value = str(int(value))
        elif value_type == 'float':
            str_value = str(float(value))
        else:
            str_value = str(value)
        
        # Update the value in the database
        cursor.execute("UPDATE config_table SET value = ? WHERE key = ?", (str_value, key))
        
        # Commit the changes and close the connection
        conn.commit()
   
        print(f"💾 Updated '{key}' to '{value}' in database.")
    except Exception as e:
        print(f"Error updating the SQLite database: {e}")

#Load config
config = load_config_sqlite()
#config
baudrate = config.get('SaraR4_baudrate', 115200)       #baudrate du sara R4
device_id = config.get('deviceID', '').upper()         #device ID en maj
sara_r5_DPD_setup = False

ser_sara = serial.Serial(
    port='/dev/ttyAMA2',
    baudrate=baudrate, #115200 ou 9600
    parity=serial.PARITY_NONE, #PARITY_NONE, PARITY_EVEN or PARITY_ODD
    stopbits=serial.STOPBITS_ONE,
    bytesize=serial.EIGHTBITS,
    timeout = 2
)

def read_complete_response(serial_connection, timeout=2, end_of_response_timeout=2, wait_for_lines=None, debug=True):
    '''
    Fonction très importante !!!
    Reads the complete response from a serial connection and waits for specific lines.
    '''
    if wait_for_lines is None:
        wait_for_lines = []  # Default to an empty list if not provided

    response = bytearray()
    serial_connection.timeout = timeout
    end_time = time.time() + end_of_response_timeout
    start_time = time.time()

    while True:
        elapsed_time = time.time() - start_time  # Time since function start
        if serial_connection.in_waiting > 0:
            data = serial_connection.read(serial_connection.in_waiting)
            response.extend(data)
            end_time = time.time() + end_of_response_timeout  # Reset timeout on new data

            # Decode and check for any target line
            decoded_response = response.decode('utf-8', errors='replace')
            for target_line in wait_for_lines:
                if target_line in decoded_response:
                    if debug:
                        print(f"[DEBUG] 🔎 Found target line: {target_line} (in {elapsed_time:.2f}s)")
                    return decoded_response  # Return response immediately if a target line is found
        elif time.time() > end_time:
            if debug:
                print(f"[DEBUG] Timeout reached. No more data received.")
            break
        time.sleep(0.1)  # Short sleep to prevent busy waiting

    # Final response and debug output
    total_elapsed_time = time.time() - start_time
    if debug:
        print(f"[DEBUG] ⏱️ elapsed time: {total_elapsed_time:.2f}s. ⏱️")
    # Check if the elapsed time exceeded 10 seconds
    if total_elapsed_time > 10 and debug:
        print(f"[ALERT] 🚨 The operation took too long 🚨")
        print(f'<span style="color: red;font-weight: bold;">[ALERT] ⚠️{total_elapsed_time:.2f}s⚠️</span>')

    return response.decode('utf-8', errors='replace')  # Return the full response if no target line is found



try:
    print('<h3>Start reboot python script</h3>')

    #check modem status
    #Attention:
        # SARA R4 response: Manufacturer: u-blox Model: SARA-R410M-02B
        # SArA R5 response: SARA-R500S-01B-00    
    print("⚙️Check SARA Status")
    command = f'ATI\r'
    ser_sara.write(command.encode('utf-8'))
    response_SARA_ATI = read_complete_response(ser_sara, wait_for_lines=["IMEI"])
    print(response_SARA_ATI)

    # Check for SARA model with more robust regex
    model = "Unknown"
    if "SARA-R410M" in response_SARA_ATI:
        model = "SARA-R410M"
        print("📱 Detected SARA R4 modem")
    elif "SARA-R500" in response_SARA_ATI:
        model = "SARA-R500"
        print("📱 Detected SARA R5 modem")
        sara_r5_DPD_setup = True
    else:
        # Fallback to regex match if direct string match fails
        match = re.search(r"Model:\s*([A-Za-z0-9\-]+)", response_SARA_ATI)
        if match:
            model = match.group(1).strip()
        else:
            model = "Unknown"
            print("⚠️ Could not identify modem model")

    print(f"🔍 Model: {model}")
    update_sqlite_config("modem_version", model)
    time.sleep(1)
    
    '''
    AIRCARTO
    '''

    # 1. Set AIRCARTO URL
    print('➡️Set aircarto URL')
    aircarto_profile_id = 0
    aircarto_url="data.nebuleair.fr"
    command = f'AT+UHTTP={aircarto_profile_id},1,"{aircarto_url}"\r'
    ser_sara.write(command.encode('utf-8'))
    response_SARA_1 = read_complete_response(ser_sara, wait_for_lines=["OK"])
    print(response_SARA_1)
    time.sleep(1)

    '''
    uSpot
    '''

    #2. Set uSpot URL
    print('➡️Set uSpot URL')
    uSpot_profile_id = 1
    uSpot_url="api-prod.uspot.probesys.net"
    command = f'AT+UHTTP={uSpot_profile_id},1,"{uSpot_url}"\r'
    ser_sara.write(command.encode('utf-8'))
    response_SARA_2 = read_complete_response(ser_sara, wait_for_lines=["OK"])
    print(response_SARA_2)
    time.sleep(1)

    print("set port 81")
    command = f'AT+UHTTP={uSpot_profile_id},5,81\r'
    ser_sara.write((command + '\r').encode('utf-8'))
    response_SARA_55 = read_complete_response(ser_sara, wait_for_lines=["OK"])
    print(response_SARA_55)
    time.sleep(1)

    #3. Get localisation (CellLocate)
    mode = 2
    sensor = 2 
    response_type = 0
    timeout_s = 2
    accuracy_m = 1
    command = f'AT+ULOC={mode},{sensor},{response_type},{timeout_s},{accuracy_m}\r'
    ser_sara.write((command + '\r').encode('utf-8'))
    response_SARA_3 = read_complete_response(ser_sara, wait_for_lines=["+UULOC"])
    print(response_SARA_3)

    match = re.search(r"\+UULOC: \d{2}/\d{2}/\d{4},\d{2}:\d{2}:\d{2}\.\d{3},([-+]?\d+\.\d+),([-+]?\d+\.\d+)", response_SARA_3)
    if match:
        latitude = match.group(1)
        longitude = match.group(2)
        print(f"📍 Latitude: {latitude}, Longitude: {longitude}")
    else:
        print("❌ Failed to extract coordinates.")

    #update sqlite table
    update_sqlite_config("latitude_raw", float(latitude))
    update_sqlite_config("longitude_raw", float(longitude))

    time.sleep(1)

except Exception as e:
    print("An error occurred:", e)
    traceback.print_exc()  # This prints the full traceback