import os
import pathlib
import socket
import sys

import click
import pyansi
from pydantic import BaseModel
from pydantic import TypeAdapter

kex_algorithms = [
    "diffie-hellman-group14-sha1",
    "diffie-hellman-group1-sha1",
    "diffie-hellman-group-exchange-sha1",
    "diffie-hellman-group-exchange-sha256",
    "ecdh-sha2-nistp256",
]

ciphers = [
    "aes256-cbc",
    "aes192-cbc",
    "3des-cbc",
    "aes128-cbc",
    "aes256-ctr",
    "aes192-ctr",
    "aes128-ctr",
]

macs = [
    "hmac-md5",
    "hmac-sha1",
    "hmac-sha2-256-etm@openssh.com",
    "hmac-sha2-512-etm@openssh.com",
    "hmac-sha2-256",
    "hmac-sha2-512",
]

options = [
    ("Ciphers", f"{','.join(ciphers)}"),
    ("ControlMaster", "no"),
    ("ControlPath", "none"),
    ("ForwardX11", "no"),
    ("ForwardX11Trusted", "no"),
    ("HostKeyAlgorithms", "+ssh-rsa"),
    ("KexAlgorithms", f"{','.join(kex_algorithms)}"),
    ("MACs", f"{','.join(macs)}"),
    ("PubkeyAcceptedKeyTypes", "+ssh-rsa"),
]


class Entry(BaseModel):
    name: str
    type: str
    comment: str
    address: str
    port: int
    username: str
    manufacturer: str
    model: str
    part_number: str


Config = TypeAdapter(dict[str, Entry])


@click.command()
@click.option("--ssh-command", default="ssh")
@click.option("--telnet-command", default="telnet")
@click.option("--config", type=click.Path(exists=True, path_type=pathlib.Path))
def main(
    ssh_command: str,
    telnet_command: str,
    config: pathlib.Path,
):
    entry = Entry.model_validate_json(config.read_bytes())

    a = pyansi.ANSI()
    sys.stdout.write(a.Title(text=f"{entry.name} - {entry.address}"))
    sys.stdout.flush()

    # if 'SSH_AUTH_SOCK' in os.environ:
    #     journal.send('Removing SSH_AUTH_SOCK from environment')
    #     del os.environ['SSH_AUTH_SOCK']

    command = []

    match entry.type:
        case "ssh":
            command = [
                ssh_command,
                "ssh",
                # "-v",
                "-y",
            ]

            if socket.gethostname() != "pc60929":
                command += ["-o", "ProxyJump=jcollie@pc60929"]

            command += [
                "-i",
                "~/.ssh/id_dmacc_rsa",
            ]

            for k, v in options:
                command += ["-o", f"{k}={v}"]

            command += [
                "-o",
                f"User={entry.username}",
                entry.address,
            ]

        case "telnet":
            command = [telnet_command, "telnet"]

            if socket.gethostname() != "pc60929":
                command = [ssh_command, "ssh", "-t", "ssh://jcollie@pc60929", "telnet"]

            command += [entry.address]

    os.execlp(*command)


if __name__ == "__main__":
    main()