from dataclasses import dataclass
import hci_packets as hci
import link_layer_packets as ll
import unittest
from hci_packets import ErrorCode
from py.bluetooth import Address
from py.controller import ControllerTest


class Test(ControllerTest):

    # Verify that the controller can establish a connection if the remote device
    # is initiating a connection at the same time. The local device responds to he
    # page events and accepts the connection. The local connection attempt is
    # abandoned and a Connection Complete event with status Connection Already
    # Exists is sent to the Host.
    async def test(self):
        # Test parameters.
        controller = self.controller
        acl_connection_handle = 0xefe
        peer_address = Address('11:22:33:44:55:66')

        controller.send_cmd(hci.WriteScanEnable(scan_enable=hci.ScanEnable.PAGE_SCAN_ONLY))

        await self.expect_evt(hci.WriteScanEnableComplete(status=ErrorCode.SUCCESS, num_hci_command_packets=1))

        controller.send_cmd(
            hci.CreateConnection(
                bd_addr=peer_address,
                packet_type=0,
                page_scan_repetition_mode=hci.PageScanRepetitionMode.R1,
                allow_role_switch=hci.CreateConnectionRoleSwitch.REMAIN_CENTRAL,
            ))

        await self.expect_evt(hci.CreateConnectionStatus(status=ErrorCode.SUCCESS, num_hci_command_packets=1))

        await self.expect_ll(
            ll.Page(source_address=controller.address, destination_address=peer_address, allow_role_switch=False))

        controller.send_ll(
            ll.Page(source_address=peer_address, destination_address=controller.address, allow_role_switch=False))

        await self.expect_evt(hci.ConnectionRequest(bd_addr=peer_address, link_type=hci.ConnectionRequestLinkType.ACL))

        controller.send_cmd(
            hci.AcceptConnectionRequest(bd_addr=peer_address, role=hci.AcceptConnectionRequestRole.REMAIN_PERIPHERAL))

        await self.expect_evt(hci.AcceptConnectionRequestStatus(status=ErrorCode.SUCCESS, num_hci_command_packets=1))

        await self.expect_ll(
            ll.PageResponse(source_address=controller.address, destination_address=peer_address, try_role_switch=False))

        await self.expect_evt(
            hci.ConnectionComplete(status=ErrorCode.SUCCESS,
                                   connection_handle=acl_connection_handle,
                                   bd_addr=peer_address,
                                   link_type=hci.LinkType.ACL,
                                   encryption_enabled=hci.Enable.DISABLED))