"""
Extended tests for globals - Global state management.

Tests cover:
- Global variable initialization
- get_globals() function
- Active research tracking
- Socket subscriptions management
- Termination flags management
- Thread safety considerations
"""


class TestGlobalVariableInitialization:
    """Tests for global variable initialization."""

    def test_active_research_initialized_as_dict(self):
        """active_research should be initialized as empty dict."""
        active_research = {}
        assert isinstance(active_research, dict)
        assert len(active_research) == 0

    def test_socket_subscriptions_initialized_as_dict(self):
        """socket_subscriptions should be initialized as empty dict."""
        socket_subscriptions = {}
        assert isinstance(socket_subscriptions, dict)
        assert len(socket_subscriptions) == 0

    def test_termination_flags_initialized_as_dict(self):
        """termination_flags should be initialized as empty dict."""
        termination_flags = {}
        assert isinstance(termination_flags, dict)
        assert len(termination_flags) == 0


class TestGetGlobals:
    """Tests for get_globals function."""

    def test_returns_dict(self):
        """get_globals should return a dict."""
        active_research = {}
        socket_subscriptions = {}
        termination_flags = {}

        globals_dict = {
            "active_research": active_research,
            "socket_subscriptions": socket_subscriptions,
            "termination_flags": termination_flags,
        }

        assert isinstance(globals_dict, dict)

    def test_contains_active_research_key(self):
        """Globals dict should contain active_research key."""
        globals_dict = {
            "active_research": {},
            "socket_subscriptions": {},
            "termination_flags": {},
        }

        assert "active_research" in globals_dict

    def test_contains_socket_subscriptions_key(self):
        """Globals dict should contain socket_subscriptions key."""
        globals_dict = {
            "active_research": {},
            "socket_subscriptions": {},
            "termination_flags": {},
        }

        assert "socket_subscriptions" in globals_dict

    def test_contains_termination_flags_key(self):
        """Globals dict should contain termination_flags key."""
        globals_dict = {
            "active_research": {},
            "socket_subscriptions": {},
            "termination_flags": {},
        }

        assert "termination_flags" in globals_dict

    def test_values_are_references(self):
        """Values should be references to global dicts."""
        active_research = {}
        globals_dict = {"active_research": active_research}

        # Modifying through globals should affect original
        globals_dict["active_research"]["test"] = "value"
        assert active_research.get("test") == "value"


class TestActiveResearchTracking:
    """Tests for active research tracking."""

    def test_add_active_research(self):
        """Should be able to add active research."""
        active_research = {}
        research_id = "test-123"

        active_research[research_id] = {
            "status": "in_progress",
            "query": "Test query",
        }

        assert research_id in active_research

    def test_get_active_research(self):
        """Should be able to get active research."""
        active_research = {
            "test-123": {"status": "in_progress", "query": "Test query"}
        }

        result = active_research.get("test-123")
        assert result is not None
        assert result["status"] == "in_progress"

    def test_remove_active_research(self):
        """Should be able to remove active research."""
        active_research = {"test-123": {"status": "completed"}}

        del active_research["test-123"]
        assert "test-123" not in active_research

    def test_check_research_exists(self):
        """Should be able to check if research exists."""
        active_research = {"test-123": {}}

        exists = "test-123" in active_research
        assert exists is True

        not_exists = "test-456" in active_research
        assert not_exists is False

    def test_list_active_research_ids(self):
        """Should be able to list all active research IDs."""
        active_research = {
            "test-123": {},
            "test-456": {},
            "test-789": {},
        }

        ids = list(active_research.keys())
        assert len(ids) == 3
        assert "test-123" in ids

    def test_active_research_count(self):
        """Should be able to count active research."""
        active_research = {
            "test-123": {},
            "test-456": {},
        }

        count = len(active_research)
        assert count == 2

    def test_update_active_research_status(self):
        """Should be able to update research status."""
        active_research = {"test-123": {"status": "in_progress"}}

        active_research["test-123"]["status"] = "completed"
        assert active_research["test-123"]["status"] == "completed"


class TestSocketSubscriptionsManagement:
    """Tests for socket subscriptions management."""

    def test_add_subscription(self):
        """Should be able to add subscription."""
        socket_subscriptions = {}
        research_id = "test-123"
        socket_id = "socket-abc"

        if research_id not in socket_subscriptions:
            socket_subscriptions[research_id] = set()
        socket_subscriptions[research_id].add(socket_id)

        assert socket_id in socket_subscriptions[research_id]

    def test_remove_subscription(self):
        """Should be able to remove subscription."""
        socket_subscriptions = {"test-123": {"socket-abc", "socket-def"}}

        socket_subscriptions["test-123"].discard("socket-abc")
        assert "socket-abc" not in socket_subscriptions["test-123"]
        assert "socket-def" in socket_subscriptions["test-123"]

    def test_get_subscribers(self):
        """Should be able to get subscribers for research."""
        socket_subscriptions = {"test-123": {"socket-abc", "socket-def"}}

        subscribers = socket_subscriptions.get("test-123", set())
        assert len(subscribers) == 2

    def test_no_subscribers_returns_empty(self):
        """No subscribers should return empty set."""
        socket_subscriptions = {}

        subscribers = socket_subscriptions.get("test-123", set())
        assert len(subscribers) == 0

    def test_multiple_research_subscriptions(self):
        """Should track subscriptions for multiple research."""
        socket_subscriptions = {
            "research-1": {"socket-1", "socket-2"},
            "research-2": {"socket-3"},
        }

        assert len(socket_subscriptions["research-1"]) == 2
        assert len(socket_subscriptions["research-2"]) == 1

    def test_same_socket_multiple_research(self):
        """Same socket can subscribe to multiple research."""
        socket_subscriptions = {
            "research-1": {"socket-1"},
            "research-2": {"socket-1"},
        }

        assert "socket-1" in socket_subscriptions["research-1"]
        assert "socket-1" in socket_subscriptions["research-2"]

    def test_cleanup_empty_subscription_set(self):
        """Should cleanup empty subscription sets."""
        socket_subscriptions = {"test-123": {"socket-abc"}}

        socket_subscriptions["test-123"].discard("socket-abc")
        if not socket_subscriptions["test-123"]:
            del socket_subscriptions["test-123"]

        assert "test-123" not in socket_subscriptions


class TestTerminationFlagsManagement:
    """Tests for termination flags management."""

    def test_set_termination_flag(self):
        """Should be able to set termination flag."""
        termination_flags = {}
        research_id = "test-123"

        termination_flags[research_id] = True
        assert termination_flags[research_id] is True

    def test_check_termination_flag(self):
        """Should be able to check termination flag."""
        termination_flags = {
            "test-123": True,
            "test-456": False,
        }

        assert termination_flags.get("test-123", False) is True
        assert termination_flags.get("test-456", False) is False
        assert termination_flags.get("test-789", False) is False

    def test_clear_termination_flag(self):
        """Should be able to clear termination flag."""
        termination_flags = {"test-123": True}

        del termination_flags["test-123"]
        assert "test-123" not in termination_flags

    def test_default_termination_false(self):
        """Default termination flag should be False."""
        termination_flags = {}

        is_terminated = termination_flags.get("nonexistent", False)
        assert is_terminated is False

    def test_multiple_termination_flags(self):
        """Should track multiple termination flags."""
        termination_flags = {
            "test-123": True,
            "test-456": True,
            "test-789": False,
        }

        terminated = [k for k, v in termination_flags.items() if v]
        assert len(terminated) == 2


class TestConcurrentAccess:
    """Tests for concurrent access patterns."""

    def test_dict_supports_concurrent_reads(self):
        """Dict should support concurrent reads."""
        active_research = {"test-123": {"status": "in_progress"}}

        # Multiple reads should be safe
        result1 = active_research.get("test-123")
        result2 = active_research.get("test-123")

        assert result1 == result2

    def test_dict_copy_for_iteration(self):
        """Should copy dict keys for safe iteration."""
        active_research = {
            "test-123": {},
            "test-456": {},
        }

        # Copy keys before iteration to avoid modification during iteration
        keys = list(active_research.keys())
        assert len(keys) == 2

    def test_atomic_key_check_and_set(self):
        """Key check and set should be atomic."""
        active_research = {}
        research_id = "test-123"

        # Use setdefault for atomic check-and-set
        active_research.setdefault(research_id, {})
        active_research[research_id]["status"] = "in_progress"

        assert active_research[research_id]["status"] == "in_progress"


class TestGlobalStateIsolation:
    """Tests for global state isolation."""

    def test_active_research_independent_of_subscriptions(self):
        """active_research should be independent of socket_subscriptions."""
        active_research = {"test-123": {}}
        socket_subscriptions = {"test-456": set()}

        assert "test-123" not in socket_subscriptions
        assert "test-456" not in active_research

    def test_termination_flags_independent(self):
        """termination_flags should be independent."""
        active_research = {"test-123": {}}
        termination_flags = {}

        # Terminating doesn't automatically remove from active
        termination_flags["test-123"] = True
        assert "test-123" in active_research
        assert termination_flags["test-123"] is True

    def test_globals_dict_is_snapshot(self):
        """get_globals returns references, not copies."""
        active_research = {}
        socket_subscriptions = {}
        termination_flags = {}

        globals_dict = {
            "active_research": active_research,
            "socket_subscriptions": socket_subscriptions,
            "termination_flags": termination_flags,
        }

        # References should be same object
        assert globals_dict["active_research"] is active_research


class TestEdgeCases:
    """Tests for edge cases."""

    def test_empty_research_id(self):
        """Should handle empty research ID."""
        active_research = {}
        research_id = ""

        active_research[research_id] = {}
        assert "" in active_research

    def test_special_characters_in_id(self):
        """Should handle special characters in ID."""
        active_research = {}
        research_id = "test-123_abc.def"

        active_research[research_id] = {}
        assert research_id in active_research

    def test_uuid_format_id(self):
        """Should handle UUID format ID."""
        active_research = {}
        research_id = "550e8400-e29b-41d4-a716-446655440000"

        active_research[research_id] = {}
        assert research_id in active_research

    def test_none_value_in_research(self):
        """Should handle None values in research data."""
        active_research = {"test-123": {"status": None, "query": "Test"}}

        assert active_research["test-123"]["status"] is None

    def test_nested_data_in_research(self):
        """Should handle nested data in research."""
        active_research = {
            "test-123": {
                "status": "in_progress",
                "metadata": {
                    "iterations": 3,
                    "sources": ["a", "b", "c"],
                },
            }
        }

        assert active_research["test-123"]["metadata"]["iterations"] == 3
        assert len(active_research["test-123"]["metadata"]["sources"]) == 3
