from __future__ import annotations

import asyncio
from unittest.mock import AsyncMock

import pytest

from yuxi.channels.adapters.twitch.eventsub_client import EventSubListener
from yuxi.channels.adapters.twitch.helix import HelixClient
from yuxi.channels.models import (
    ChatType,
    EventType,
    MessageType,
)


def _make_listener():
    helix = HelixClient("dummy_id", "dummy_token")
    return EventSubListener(
        helix=helix,
        app_access_token="app_token",
        broadcaster_ids=["12345"],
    )


class TestEventSubNormalize:
    def setup_method(self):
        self.listener = _make_listener()

    def test_normalize_follow(self):
        event = {
            "id": "follow-001",
            "broadcaster_user_id": "12345",
            "user_id": "678",
            "user_name": "Follower1",
        }
        msg = self.listener._normalize_follow(event, "12345")
        assert msg is not None
        assert msg.event_type == EventType.SYSTEM_EVENT
        assert "followed" in msg.content
        assert msg.metadata["event"] == "follow"
        assert msg.identity.channel_user_id == "678"

    def test_normalize_subscription(self):
        event = {
            "id": "sub-001",
            "broadcaster_user_id": "12345",
            "user_id": "678",
            "user_name": "Subscriber1",
            "tier": "1000",
        }
        msg = EventSubListener._normalize_subscription(event, "12345")
        assert msg is not None
        assert "subscribed" in msg.content
        assert msg.metadata["event"] == "subscription"
        assert msg.metadata["tier"] == "1000"

    def test_normalize_subscription_message(self):
        event = {
            "id": "resub-001",
            "broadcaster_user_id": "12345",
            "user_id": "678",
            "user_name": "Resubber1",
            "tier": "2000",
            "cumulative_months": 12,
            "message": {"text": "I love this channel!"},
        }
        msg = EventSubListener._normalize_subscription_message(event, "12345")
        assert msg is not None
        assert "resubscribed" in msg.content
        assert msg.metadata["cumulative_months"] == 12
        assert msg.metadata["tier"] == "2000"

    def test_normalize_subscription_gift(self):
        event = {
            "id": "gift-001",
            "broadcaster_user_id": "12345",
            "user_id": "678",
            "user_name": "Gifter1",
            "total": 5,
            "tier": "1000",
        }
        msg = EventSubListener._normalize_subscription_gift(event, "12345")
        assert msg is not None
        assert "gifted" in msg.content
        assert msg.metadata["total"] == 5

    def test_normalize_cheer(self):
        event = {
            "id": "cheer-001",
            "broadcaster_user_id": "12345",
            "user_id": "678",
            "user_name": "Cheerer1",
            "bits": 1000,
            "message": "Go team!",
        }
        msg = EventSubListener._normalize_cheer(event, "12345")
        assert msg is not None
        assert "cheered" in msg.content
        assert msg.metadata["bits"] == 1000

    def test_normalize_raid(self):
        event = {
            "id": "raid-001",
            "broadcaster_user_id": "12345",
            "from_broadcaster_user_id": "999",
            "from_broadcaster_user_name": "RaiderChannel",
            "viewers": 50,
        }
        msg = EventSubListener._normalize_raid(event, "12345")
        assert msg is not None
        assert "raided" in msg.content
        assert msg.metadata["viewers"] == 50
        assert msg.metadata["from_broadcaster_name"] == "RaiderChannel"

    def test_normalize_channel_points(self):
        event = {
            "id": "cp-001",
            "broadcaster_user_id": "12345",
            "user_id": "678",
            "user_name": "Viewer1",
            "user_input": "Hello!",
            "reward": {"title": "Shoutout", "cost": 500, "id": "reward-1"},
            "status": "unfulfilled",
        }
        msg = EventSubListener._normalize_channel_points(event, "12345")
        assert msg is not None
        assert msg.content == "Hello!"
        assert msg.metadata["reward_title"] == "Shoutout"

    def test_normalize_hype_train(self):
        event = {
            "id": "ht-001",
            "broadcaster_user_id": "12345",
            "level": 3,
            "progress": 200,
            "goal": 500,
            "total": 150,
            "top_contributions": [],
        }
        msg = EventSubListener._normalize_hype_train(event, "12345")
        assert msg is not None
        assert "Hype Train" in msg.content
        assert msg.metadata["level"] == 3

    def test_normalize_event_routing_follow(self):
        event_data = {
            "subscription": {"type": "channel.follow"},
            "event": {
                "id": "f-1",
                "broadcaster_user_id": "12345",
                "user_id": "678",
                "user_name": "Follower1",
            },
        }
        msg = self.listener._normalize_event(event_data)
        assert msg is not None
        assert "followed" in msg.content

    def test_normalize_event_routing_raid(self):
        event_data = {
            "subscription": {"type": "channel.raid"},
            "event": {
                "id": "r-1",
                "broadcaster_user_id": "12345",
                "from_broadcaster_user_id": "999",
                "from_broadcaster_user_name": "Raider",
                "viewers": 10,
            },
        }
        msg = self.listener._normalize_event(event_data)
        assert msg is not None
        assert "raided" in msg.content

    def test_normalize_event_unknown_type(self):
        event_data = {
            "subscription": {"type": "unknown.event"},
            "event": {"id": "x-1", "broadcaster_user_id": "12345"},
        }
        msg = self.listener._normalize_event(event_data)
        assert msg is None

    def test_normalize_event_with_subscription_message(self):
        event_data = {
            "subscription": {"type": "channel.subscription.message"},
            "event": {
                "id": "rm-1",
                "broadcaster_user_id": "12345",
                "user_id": "678",
                "user_name": "Resubber",
                "tier": "3000",
                "cumulative_months": 24,
                "message": {"text": "Best channel ever!"},
            },
        }
        msg = self.listener._normalize_event(event_data)
        assert msg is not None
        assert msg.metadata["event"] == "resubscription"


class TestEventSubConstants:
    def test_has_follow_subscription(self):
        types = EventSubListener.SUBSCRIPTION_TYPES
        type_names = [t["type"] for t in types]
        assert "channel.follow" in type_names

    def test_has_raid_subscription(self):
        types = EventSubListener.SUBSCRIPTION_TYPES
        type_names = [t["type"] for t in types]
        assert "channel.raid" in type_names

    def test_has_subscription_message(self):
        types = EventSubListener.SUBSCRIPTION_TYPES
        type_names = [t["type"] for t in types]
        assert "channel.subscription.message" in type_names

    def test_keepalive_timeout_reasonable(self):
        assert 10 <= EventSubListener.KEEPALIVE_TIMEOUT <= 30

    def test_max_reconnect_delay_reasonable(self):
        assert EventSubListener.MAX_RECONNECT_DELAY >= 60


class TestEventSubMessageLoopExceptions:
    @pytest.mark.asyncio
    async def test_cancelled_error_propagates(self):
        helix = HelixClient(client_id="test_id", access_token="test_token")
        listener = EventSubListener(helix, "test_app_token", ["12345"])
        listener._ws = AsyncMock()
        listener._ws.receive_json = AsyncMock(
            side_effect=asyncio.CancelledError()
        )
        listener._ws.close = AsyncMock()
        listener._running = True

        with pytest.raises(asyncio.CancelledError):
            await listener._message_loop()

    @pytest.mark.asyncio
    async def test_general_exception_breaks_loop(self):
        helix = HelixClient(client_id="test_id", access_token="test_token")
        listener = EventSubListener(helix, "test_app_token", ["12345"])
        listener._ws = AsyncMock()
        listener._ws.receive_json = AsyncMock(side_effect=RuntimeError("test error"))
        listener._ws.close = AsyncMock()
        listener._running = True

        await listener._message_loop()
        assert listener._running is True