"""FTPS (explicit TLS) transport — inherits FTP transport behavior."""

from __future__ import annotations

import ftplib

from .ftp_transport import FTPTransport


class FTPSTransport(FTPTransport):
    TRANSPORT_SLUG = "ftps"
    _FTP_CLASS = ftplib.FTP_TLS

    def _connect(self):
        conn = self._FTP_CLASS(timeout=self.timeout)
        conn.connect(self.host, self.port or 21)
        conn.login(self.username or "", self.password or "")
        # Enable encryption on the data channel too (most servers require this)
        conn.prot_p()
        conn.sendcmd("TYPE I")
        return conn