# Copyright 2021-2022 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# -----------------------------------------------------------------------------
# Imports
# -----------------------------------------------------------------------------
import logging

from .common import Transport, AsyncPipeSink
from ..link import RemoteLink
from ..controller import Controller

# -----------------------------------------------------------------------------
# Logging
# -----------------------------------------------------------------------------
logger = logging.getLogger(__name__)


# -----------------------------------------------------------------------------
async def open_transport(name):
    '''
    Open a transport by name.
    The name must be <type>:<parameters>
    Where <parameters> depend on the type (and may be empty for some types).
    The supported types are: serial,udp,tcp,pty,usb
    '''
    scheme, *spec = name.split(':', 1)
    if scheme == 'serial' and spec:
        from .serial import open_serial_transport
        return await open_serial_transport(spec[0])
    elif scheme == 'udp' and spec:
        from .udp import open_udp_transport
        return await open_udp_transport(spec[0])
    elif scheme == 'tcp-client' and spec:
        from .tcp_client import open_tcp_client_transport
        return await open_tcp_client_transport(spec[0])
    elif scheme == 'tcp-server' and spec:
        from .tcp_server import open_tcp_server_transport
        return await open_tcp_server_transport(spec[0])
    elif scheme == 'ws-client' and spec:
        from .ws_client import open_ws_client_transport
        return await open_ws_client_transport(spec[0])
    elif scheme == 'ws-server' and spec:
        from .ws_server import open_ws_server_transport
        return await open_ws_server_transport(spec[0])
    elif scheme == 'pty':
        from .pty import open_pty_transport
        return await open_pty_transport(spec[0] if spec else None)
    elif scheme == 'file':
        from .file import open_file_transport
        return await open_file_transport(spec[0] if spec else None)
    elif scheme == 'vhci':
        from .vhci import open_vhci_transport
        return await open_vhci_transport(spec[0] if spec else None)
    elif scheme == 'hci-socket':
        from .hci_socket import open_hci_socket_transport
        return await open_hci_socket_transport(spec[0] if spec else None)
    elif scheme == 'usb':
        from .usb import open_usb_transport
        return await open_usb_transport(spec[0] if spec else None)
    elif scheme == 'pyusb':
        from .pyusb import open_pyusb_transport
        return await open_pyusb_transport(spec[0] if spec else None)
    elif scheme == 'android-emulator':
        from .android_emulator import open_android_emulator_transport
        return await open_android_emulator_transport(spec[0] if spec else None)
    else:
        raise ValueError('unknown transport scheme')


# -----------------------------------------------------------------------------
async def open_transport_or_link(name):
    if name.startswith('link-relay:'):
        link = RemoteLink(name[11:])
        await link.wait_until_connected()
        controller = Controller('remote', link = link)

        class LinkTransport(Transport):
            async def close(self):
                link.close()

        return LinkTransport(controller, AsyncPipeSink(controller))
    else:
        return await open_transport(name)