import itertools
import os

from datetime import datetime, time
import tzlocal

import pytest
from model_bakery import baker

from aircox import models
from aircox_streamer import controllers
from aircox_streamer.connector import Connector


local_tz = tzlocal.get_localzone()


working_dir = os.path.join(os.path.dirname(__file__), "working_dir")


class FakeSocket:
    FAILING_ADDRESS = -1
    """Connect with this address fails."""

    family, type, address = None, None, None
    sent_data = None
    """List of data that have been `send[all]`"""
    recv_data = None
    """Response data to return on recv."""

    def __init__(self, family, type):
        self.family = family
        self.type = type
        self.sent_data = []
        self.recv_data = ""

    def connect(self, address):
        if address == self.FAILING_ADDRESS:
            raise RuntimeError("invalid connection")
        self.address = address

    def close(self):
        pass

    def sendall(self, data):
        self.sent_data.append(data.decode())

    def recv(self, count):
        if isinstance(self.recv_data, list):
            if len(self.recv_data):
                data, self.recv_data = self.recv_data[0], self.recv_data[1:]
            else:
                data = ""
        else:
            data = self.recv_data
            self.recv_data = self.recv_data[count:]
        data = data[:count]
        return (data.encode("utf-8") if isinstance(data, str) else data) or b"\nEND"

    def is_sent(self, data):
        """Return True if provided data have been sent."""
        # use [:-1] because connector add "\n" at sent data
        return any(r for r in self.sent_data if r == data or r[:-1] == data)


# -- models
@pytest.fixture
def station():
    station = models.Station(name="test", path=working_dir, default=True, active=True)
    station.save()
    return station


@pytest.fixture
def stations(station):
    objs = [
        models.Station(
            name=f"test-{i}",
            slug=f"test-{i}",
            path=working_dir,
            default=(i == 0),
            active=True,
        )
        for i in range(0, 3)
    ]
    models.Station.objects.bulk_create(objs)
    return [station] + objs


@pytest.fixture
def station_ports(station):
    return _stations_ports(station)


@pytest.fixture
def stations_ports(stations):
    return _stations_ports(*stations)


def _stations_ports(*stations):
    items = list(
        itertools.chain(
            *[
                (
                    models.Port(
                        station=station,
                        direction=models.Port.DIRECTION_INPUT,
                        type=models.Port.TYPE_HTTP,
                        active=True,
                    ),
                    models.Port(
                        station=station,
                        direction=models.Port.DIRECTION_OUTPUT,
                        type=models.Port.TYPE_FILE,
                        active=True,
                    ),
                )
                for station in stations
            ]
        )
    )
    models.Port.objects.bulk_create(items)
    return items


@pytest.fixture
def program(station):
    program = models.Program(title="test", station=station)
    program.save()
    return program


@pytest.fixture
def stream(program):
    stream = models.Stream(program=program, begin=time(10, 12), end=time(12, 13))
    stream.save()
    return stream


@pytest.fixture
def episode(program):
    return baker.make(models.Episode, title="test episode", program=program)


@pytest.fixture
def sound(program, episode):
    sound = models.Sound(
        program=program,
        episode=episode,
        name="sound",
        type=models.Sound.TYPE_ARCHIVE,
        position=0,
        file="sound.mp3",
    )
    sound.save(check=False)
    return sound


@pytest.fixture
def sounds(program):
    items = [
        models.Sound(
            name=f"sound {i}",
            program=program,
            type=models.Sound.TYPE_ARCHIVE,
            position=i,
            file=f"sound-{i}.mp3",
        )
        for i in range(0, 3)
    ]
    models.Sound.objects.bulk_create(items)
    return items


# -- connectors
@pytest.fixture
def connector():
    obj = Connector(os.path.join(working_dir, "test.sock"))
    obj.socket_class = FakeSocket
    yield obj
    obj.close()


@pytest.fixture
def fail_connector():
    obj = Connector(FakeSocket.FAILING_ADDRESS)
    obj.socket_class = FakeSocket
    yield obj
    obj.close()


@pytest.fixture
def controller(station, connector):
    connector.open()
    return controllers.Streamer(station, connector)


@pytest.fixture
def socket(controller):
    return controller.connector.socket


# -- metadata
@pytest.fixture
def metadata(controller):
    return controllers.Metadata(controller, 1)


@pytest.fixture
def metadata_data_air_time():
    return local_tz.localize(datetime(2023, 5, 1, 12, 10, 5))


@pytest.fixture
def metadata_data(metadata_data_air_time):
    return {
        "rid": 1,
        "initial_uri": "request_uri",
        "on_air": metadata_data_air_time.strftime("%Y/%m/%d %H:%M:%S"),
        "status": "playing",
    }


@pytest.fixture
def metadata_string(metadata_data):
    return "\n".join(f"{key}={value}" for key, value in metadata_data.items()) + "\nEND"


# -- streamers
class FakeStreamer(controllers.Streamer):
    calls = {}
    is_ready = False

    def __init__(self, **kwargs):
        self.__dict__.update(**kwargs)

    def fetch(self):
        self.calls["fetch"] = True


class FakeSource(controllers.Source):
    def __init__(self, id, *args, **kwargs):
        self.id = id
        self.args = args
        self.kwargs = kwargs
        self.calls = {}

    def fetch(self):
        self.calls["sync"] = True

    def sync(self):
        self.calls["sync"] = True

    def push(self, *path):
        self.calls["push"] = path
        return path

    def skip(self):
        self.calls["skip"] = True

    def restart(self):
        self.calls["restart"] = True

    def seek(self, c):
        self.calls["seek"] = c


class FakePlaylist(FakeSource, controllers.PlaylistSource):
    pass


class FakeQueueSource(FakeSource, controllers.QueueSource):
    pass


@pytest.fixture
def streamer(station, station_ports):
    streamer = FakeStreamer(station=station)
    streamer.sources = [FakePlaylist(i, uri=f"source-{i}") for i in range(0, 3)]
    streamer.dealer = FakeQueueSource(len(streamer.sources))
    streamer.sources.append(streamer.dealer)
    return streamer


@pytest.fixture
def streamers(stations, stations_ports):
    streamers = controllers.Streamers(streamer_class=FakeStreamer)
    # avoid unecessary db calls
    streamers.streamers = {station.pk: FakeStreamer(station=station) for station in stations}
    for j, streamer in enumerate(streamers.values()):
        streamer.sources = [FakePlaylist(i, uri=f"source-{j}-{i}") for i in range(0, 3)]
        streamer.sources.append(FakeQueueSource(len(streamer.sources)))
    return streamers