import csv
import paramiko
from cube_activate_ssh import activate_ssh
from dotenv import load_dotenv
import os
import re
import sys

def resource_path(relative_path):
    """ Get absolute path to resource, works for dev and for PyInstaller """
    try:
        # PyInstaller creates a temp folder and stores path in _MEIPASS
        base_path = sys._MEIPASS
    except Exception:
        base_path = os.path.abspath(".")

    return os.path.join(base_path, relative_path)

dotenv_path = resource_path('.env')
load_dotenv(dotenv_path=dotenv_path)

ip_address_prefix = "10.84.195."
ssh_command = "hostname"

csv_filename = "ANTWERP_01.csv"

ENV_SSH = {
    "DEFAULT_CUBE_LINUX_ADMIN_USER": os.getenv("DEFAULT_CUBE_LINUX_ADMIN_USER"),
    "DEFAULT_CUBE_LINUX_ADMIN_PASSWORD": os.getenv("DEFAULT_CUBE_LINUX_ADMIN_PASSWORD")
}

ssh_username = ENV_SSH["DEFAULT_CUBE_LINUX_ADMIN_USER"]
ssh_password = ENV_SSH["DEFAULT_CUBE_LINUX_ADMIN_PASSWORD"]

def execute_ssh_command(ip, command):
    client = paramiko.SSHClient()
    client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    try:
        client.connect(ip, port=11022, username=ssh_username, password=ssh_password, allow_agent=False, look_for_keys=False)
        stdin, stdout, stderr = client.exec_command(command)
        result = stdout.read().decode().lower().strip()
        return result
    except Exception as e:
        print(f"SSH Error: {str(e)}")
        raise
    finally:
        client.close()

def update_cloud_config(ip, new_content):
    client = paramiko.SSHClient()
    client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    try:
        client.connect(ip, port=11022, username=ssh_username, password=ssh_password, allow_agent=False, look_for_keys=False)
        stdin, stdout, stderr = client.exec_command(f'sudo -S bash -c \'cat > /etc/cube/config-azure.properties << EOF\n{new_content}\nEOF\'\n')
        stdin.write(ssh_password + "\n")
        stdin.flush()
        stdoutput = [line for line in stdout]
        stderroutput = [line for line in stderr]
        for output in stdoutput:
            print(output.strip())
    except Exception as e:
        print(f"SSH Error: {str(e)}")
        raise
    finally:
        client.close()

def restart_cloudagent(ip):
    client = paramiko.SSHClient()
    client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    try:
        client.connect(ip, port=11022, username=ssh_username, password=ssh_password, allow_agent=False, look_for_keys=False)
        stdin, stdout, stderr = client.exec_command(f'sudo -S bash -c \'systemctl restart cube-web-cloudagent << EOF\n\nEOF\'\n')
        stdin.write(ssh_password + "\n")
        stdin.flush()
        stdoutput = [line for line in stdout]
        stderroutput = [line for line in stderr]
        for output in stdoutput:
            print(output.strip())
    except Exception as e:
        print(f"SSH Error: {str(e)}")
        raise
    finally:
        client.close()

def main():

    print("Starting...")
    #print(f"{ssh_username} {ssh_password}")

    with open(csv_filename, mode="w", newline="") as file:
        writer = csv.writer(file)
        writer.writerow(["Number", "IP address", "Cube ID", "Environment", "Correct configuration"])

        numbers = range(129, 139)
        for i in numbers:
            ip_address = f"{ip_address_prefix}{i}"
            print(f"Activating SSH for {ip_address}:", end=" ")
            
            try:
                activate_ssh(ip_address)
            except Exception as e:
                print(f"Failed! {e}")
                writer.writerow([i, ip_address, "UNREACHABLE", "NA", "NA"])
                file.flush()
                continue

            print("Activated!")

            print(f"Executing {ssh_command} for {ip_address}:", end=" ")
            try:
                cube_id = execute_ssh_command(ip_address, ssh_command)
            except Exception as e:
                print(f"Failed! {e}")
                writer.writerow([i, ip_address, "UNREACHABLE", "NA", "NA"])
                file.flush()
                continue
            print(cube_id)

            print(f"Getting configured Connection String")
            try:
                connection_string = execute_ssh_command(ip_address, "grep \"connection-string\" /etc/cube/config-azure.properties")
                if connection_string == "":
                    raise Exception("No Connection String extracted!")

                iothub_match = re.search(r"hostname\\=(.*?);", connection_string, re.IGNORECASE)
                iothub = iothub_match.group(1) if iothub_match else None
                if iothub.lower() == "IotHub-CUBE-PROD.azure-devices.net".lower():
                    migration = "SAFT"
                elif iothub.lower() == "iot-ingest-ess-prod.azure-devices.net".lower():
                    migration = "INOX"
                else:
                    migration = "NONE"

                device_id_match =  re.search(r"deviceid\\=(.*?);", connection_string, re.IGNORECASE)
                cloud_cube_id = device_id_match.group(1) if device_id_match else None
                if cloud_cube_id.lower() == cube_id.lower():
                    status = "CORRECT"
                else:
                    status = "INCORRECT"

            except Exception as e:
                print(e)
                migration = "NONE"
                status = "INCORRECT"

            try:
                print(f"restarting cloud agent on {ip_address}")
                restart_cloudagent(ip_address)
            except Exception as e:
                print(e)

            writer.writerow([i, ip_address, cube_id, migration, status])
            file.flush()

if __name__ == "__main__":
    main()