"""Tests for GatewayRunner._resolve_profile_home_for_source — profile resolution logic."""

import logging
from pathlib import Path
from unittest.mock import AsyncMock, MagicMock, patch

import pytest

from gateway.session import SessionSource, build_session_key
from gateway.run import GatewayRunner
from gateway.profile_routing import ProfileRoute
from gateway.config import GatewayConfig, Platform
from gateway.platforms.base import BasePlatformAdapter


@pytest.fixture
def mock_runner():
    """Create a minimal mock GatewayRunner with the methods we need."""
    runner = MagicMock(spec=GatewayRunner)
    runner.config = MagicMock(profile_routes=[])
    # Bind the actual methods to the mock
    runner._profile_name_for_source = GatewayRunner._profile_name_for_source.__get__(runner)
    runner._resolve_profile_home_for_source = GatewayRunner._resolve_profile_home_for_source.__get__(runner)
    return runner


@pytest.fixture
def discord_source():
    """Create a basic Discord SessionSource for testing."""
    return SessionSource(
        platform=MagicMock(value="discord"),
        chat_id="123456",
        guild_id="789",
        thread_id=None,
        parent_chat_id=None,
    )


@pytest.fixture
def telegram_source():
    """Create a basic Telegram SessionSource for testing.

    Telegram (like Slack/Feishu/etc.) has no ``guild_id`` — only ``chat_id``.
    Used to prove profile routing is platform-generic, not Discord-only.
    """
    return SessionSource(
        platform=MagicMock(value="telegram"),
        chat_id="-1001234567890",
        guild_id=None,
        thread_id=None,
        parent_chat_id=None,
    )


class TestResolutionOrder:
    """Tests that profile resolution follows the correct priority order."""
    
    def test_source_profile_wins_over_routing(self, mock_runner, discord_source):
        """source.profile should be used even if routing would match."""
        discord_source.profile = "from-source"
        
        with patch("hermes_cli.profiles.get_active_profile_name", return_value="active"):
            with patch("hermes_cli.profiles.get_profile_dir") as mock_get_dir:
                with patch("hermes_cli.profiles.profile_exists", return_value=True):
                    mock_get_dir.return_value = Path("/hermes/profiles/from-source")
                    result = mock_runner._resolve_profile_home_for_source(discord_source)
                    
                    assert result == Path("/hermes/profiles/from-source")
                    mock_get_dir.assert_called_once_with("from-source")
    
    
    


class TestMissingProfileWarning:
    """Tests for warning when a profile doesn't exist on disk."""
    
    def test_nonexistent_profile_warning(self, mock_runner, discord_source, caplog):
        """When source.profile points to a nonexistent profile, log a WARNING."""
        discord_source.profile = "nonexistent"
        
        with patch("hermes_cli.profiles.get_active_profile_name", return_value="active"):
            with patch("hermes_cli.profiles.get_profile_dir") as mock_get_dir:
                mock_get_dir.return_value = Path("/hermes/profiles/nonexistent")
                with patch("hermes_cli.profiles.profile_exists", return_value=False):
                    with patch("hermes_constants.get_hermes_home", return_value=Path("/hermes")):
                        with caplog.at_level(logging.WARNING):
                            result = mock_runner._resolve_profile_home_for_source(discord_source)
                            
                            # Should fall back to global HERMES_HOME
                            assert result == Path("/hermes")
                            
                            # Should have logged a warning
                            assert len(caplog.records) == 1
                            assert caplog.records[0].levelname == "WARNING"
                            assert "nonexistent" in caplog.records[0].message
                            assert "does not exist" in caplog.records[0].message
                            assert "discord" in caplog.records[0].message
                            assert "123456" in caplog.records[0].message
    
    
    


class TestExceptionHandling:
    """Tests for exception handling in profile resolution."""
    
    def test_get_profile_dir_exception_logs_warning(self, mock_runner, discord_source, caplog):
        """When get_profile_dir raises an exception, log a WARNING with context."""
        discord_source.profile = "bad-profile"
        
        with patch("hermes_cli.profiles.get_active_profile_name", return_value="active"):
            with patch("hermes_cli.profiles.get_profile_dir", side_effect=ValueError("Invalid profile name")):
                with patch("hermes_constants.get_hermes_home", return_value=Path("/hermes")):
                    with caplog.at_level(logging.WARNING):
                        result = mock_runner._resolve_profile_home_for_source(discord_source)
                        
                        # Should fall back to global HERMES_HOME
                        assert result == Path("/hermes")
                        
                        # Should have logged a warning with exception info
                        assert len(caplog.records) == 1
                        assert caplog.records[0].levelname == "WARNING"
                        assert "bad-profile" in caplog.records[0].message
                        assert "Failed to resolve profile directory" in caplog.records[0].message
    


class TestRoutingConsultation:
    """Tests that _profile_name_for_source is consulted when source.profile is empty."""
    
    def test_routing_consulted_when_source_profile_empty(self, mock_runner, discord_source):
        """_profile_name_for_source should be called when source.profile is empty."""
        discord_source.profile = None
        
        with patch("hermes_cli.profiles.get_active_profile_name", return_value="active"):
            with patch("hermes_cli.profiles.get_profile_dir") as mock_get_dir:
                mock_get_dir.return_value = Path("/hermes/profiles/routed")
                
                mock_runner._profile_name_for_source = MagicMock(return_value="routed")
                
                mock_runner._resolve_profile_home_for_source(discord_source)
                
                # Should have called routing
                mock_runner._profile_name_for_source.assert_called_once_with(discord_source)
    


class TestNonDiscordProfileRouting:
    """Profile routing must be platform-generic, not Discord-only.

    Regression coverage for the ``gateway_runner`` injection gap: previously
    only Discord's adapter pre-declared ``gateway_runner``, so only Discord
    ever had ``build_source`` call ``_profile_name_for_source``. Telegram /
    Feishu / Slack / etc. silently fell through to the default profile. These
    tests pin the resolution half for a non-Discord platform (Telegram).
    """

    def test_telegram_route_resolves(self, mock_runner, telegram_source):
        """A configured Telegram route resolves to its profile via the real
        ``_profile_name_for_source`` (bound onto the mock runner)."""
        mock_runner.config.profile_routes = [
            ProfileRoute(name="tg", platform="telegram", profile="tg-profile",
                         chat_id="-1001234567890"),
        ]
        telegram_source.profile = None

        assert mock_runner._profile_name_for_source(telegram_source) == "tg-profile"


class TestGatewayRunnerInjection:
    """``BasePlatformAdapter`` declares ``gateway_runner`` so the gateway's
    unconditional injection reaches every platform adapter — the foundation
    that makes the routing in TestNonDiscordProfileRouting reachable at runtime.
    """

    def test_base_adapter_declares_gateway_runner(self):
        from gateway.platforms.base import BasePlatformAdapter

        # Class-level attribute exists and defaults to None.
        assert hasattr(BasePlatformAdapter, "gateway_runner")
        assert BasePlatformAdapter.gateway_runner is None


# A concrete adapter we can instantiate without the full platform stack.
# ``build_source`` only reads ``self.platform`` and ``self.gateway_runner``, so a
# bare instance with those two attrs exercises the real BasePlatformAdapter
# method end-to-end. Clearing ``__abstractmethods__`` lets ``__new__`` bypass
# the ABC instantiation guard without stubbing connect/send/get_chat_info/…
class _StubAdapter(BasePlatformAdapter):
    pass


_StubAdapter.__abstractmethods__ = frozenset()  # type: ignore[attr-defined]


def _stub_adapter(platform: Platform, runner) -> "_StubAdapter":
    a = _StubAdapter.__new__(_StubAdapter)
    a.platform = platform
    a.gateway_runner = runner
    return a


class TestAdapterToSessionKeyIntegration:
    """Adapter -> ``source.profile`` -> session-key integration coverage.

    The review asked for integration coverage for Discord AND a non-Discord
    platform. These drive a concrete adapter's real ``build_source``
    (BasePlatformAdapter) with an injected ``gateway_runner``, assert the
    matched route's profile is stamped on the source, and that the resulting
    session key is profile-scoped (``agent:<profile>:...`` rather than the
    shared ``agent:main:...``). The Telegram case is the bug-#2 regression:
    pre-fix it never received ``gateway_runner`` and fell through to default.
    """

    @staticmethod
    def _routes():
        return [
            ProfileRoute(name="dc", platform="discord", profile="coder",
                         guild_id="111", chat_id="222"),
            ProfileRoute(name="tg", platform="telegram", profile="ops",
                         chat_id="-1001234567890"),
        ]

    def test_discord_adapter_stamps_profile_and_scopes_key(self, mock_runner):
        mock_runner.config.profile_routes = self._routes()
        adapter = _stub_adapter(Platform.DISCORD, mock_runner)

        source = adapter.build_source(
            chat_id="222", chat_type="group", guild_id="111", user_id="u1",
        )
        assert source.profile == "coder"

        key = build_session_key(source, profile=source.profile)
        assert key.startswith("agent:coder:"), key
        # A default-profile key would land in agent:main — must differ.
        assert key != build_session_key(source, profile=None)


class TestMultiplexGate:
    """``profile_routes`` only activates under ``gateway.multiplex_profiles``.

    Routing stamps ``source.profile``, which namespaces session/batch keys —
    but the profile-scoped agent run (``_profile_runtime_scope``) only engages
    when multiplexing is on. Without the gate, a configured route with
    multiplexing off would split batch/session keys into ``agent:<profile>``
    while the agent still served the turn from ``agent:main``'s home.
    """

    def test_routes_ignored_when_multiplex_off(self, mock_runner, discord_source):
        mock_runner.config.multiplex_profiles = False
        mock_runner.config.profile_routes = [
            ProfileRoute(name="dc", platform="discord", profile="coder",
                         guild_id="789", chat_id="123456"),
        ]
        discord_source.profile = None

        assert mock_runner._profile_name_for_source(discord_source) is None