import csv
import paramiko
import time
from cube_activate_ssh_port import activate_ssh
from dotenv import load_dotenv
import os
import re
from azure.iot.hub import IoTHubRegistryManager
from azure.iot.hub.models import Twin, TwinProperties

load_dotenv(override=True)

ssh_username = os.getenv("DEFAULT_CUBE_LINUX_ADMIN_USER")
ssh_password = os.getenv("DEFAULT_CUBE_LINUX_ADMIN_PASSWORD")
CONNECTION_STRING = str(os.getenv("CONNECTION_STRING_INOX_PROD"))

def execute_ssh_command(ip, port, command):
    client = paramiko.SSHClient()
    client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    try:
        client.connect(ip, port=port, 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 main():

    SITE_NAME = "LIBERTY"

    ip_address = "192.168.15.158"

    https_start_port = 8080
    https_end_port = 8096
    https_port_range = list(range(https_start_port, https_end_port + 1))
    print(f"{https_port_range}")

    ssh_start_port = 8180
    ssh_start_end = 8196
    ssh_port_range = list(range(ssh_start_port, ssh_start_end + 1))
    print(f"{ssh_port_range}")


    print(f"Site: {SITE_NAME}")
    print(f"From {ip_address}:{str(https_start_port)} to {ip_address}:{str(https_end_port)}")

    file_numbering = 0

    while os.path.exists(SITE_NAME + "_" + str(file_numbering) + ".csv"):
        file_numbering = file_numbering + 1
    
    csv_filename = SITE_NAME + "_" + str(file_numbering) + ".csv"

    print(f"Logging results to {csv_filename}")

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

        registry_manager = IoTHubRegistryManager.from_connection_string(CONNECTION_STRING)

        results = []

        for i in [0]: # range(0, len(https_port_range)):
            ip_address = f"{ip_address}"
            print(f"Activating SSH for {ip_address}:{https_port_range[i]} ", end=" ")
            
            try:
                activate_ssh(ip_address, https_port_range[i])
            except Exception as e:
                writer.writerow([i, f"{ip_address}:{https_port_range[i]}", "UNREACHABLE", "NA", "NA"])
                file.flush()
                continue

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

            ssh_command = "grep \"connection-string\" /etc/cube/config-azure.properties"
            print(f"Getting configured Connection String for {ip_address}:", end=" ")
            try:
                connection_string = execute_ssh_command(ip_address, ssh_port_range[i], ssh_command)
                if connection_string == "":
                    raise Exception("No Connection String was 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"
            finally:
                print(f"{migration} {status}")
            
            writer.writerow([i, ip_address, cube_id, migration, status])
            file.flush()

if __name__ == "__main__":
    main()