"""Pytest configuration and fixtures for the test suite."""

import os
import sqlite3
import sys
from unittest.mock import MagicMock

import pytest

# Import pytest marker configuration
try:
    from . import conftest_markers  # noqa: F401
except ImportError:
    import conftest_markers  # noqa: F401

# ── Stub heavy optional dependencies so unit tests run without them ────────────
# Only stub truly optional packages that may not be installed.
# agno is a core dependency (always installed) — do NOT stub it, or its
# internal import chains break under xdist parallel workers.
for _mod in [
    "mcp",
    "mcp.client",
    "mcp.client.stdio",
    "mcp.registry",
    "telegram",
    "telegram.ext",
    "discord",
    "discord.ext",
    "discord.ext.commands",
    "pyzbar",
    "pyzbar.pyzbar",
    "pyttsx3",
    "sentence_transformers",
    "swarm",
    "swarm.event_log",
]:
    sys.modules.setdefault(_mod, MagicMock())

# agno.tools.mcp requires the real mcp package; stub the sub-module so
# patch("agno.tools.mcp.MCPTools") resolves without installing mcp.
if "agno.tools.mcp" not in sys.modules:
    _agno_mcp_stub = MagicMock()
    sys.modules["agno.tools.mcp"] = _agno_mcp_stub

# mcp.registry needs a tool_registry with get_handler (used by timmy.agents.base)
_mcp_reg = sys.modules.get("mcp.registry")
if _mcp_reg is not None and not hasattr(_mcp_reg, "tool_registry"):
    _mock_tool_reg = MagicMock()
    _mock_tool_reg.get_handler.return_value = None
    _mcp_reg.tool_registry = _mock_tool_reg

# ── Test mode setup ──────────────────────────────────────────────────────────
os.environ["TIMMY_TEST_MODE"] = "1"
os.environ["TIMMY_DISABLE_CSRF"] = "1"
os.environ["TIMMY_SKIP_EMBEDDINGS"] = "1"


@pytest.fixture(autouse=True)
def reset_message_log(tmp_path):
    """Redirect chat DB to temp dir and clear before/after every test."""
    import dashboard.store as _store_mod

    original_db_path = _store_mod.DB_PATH
    tmp_chat_db = tmp_path / "chat.db"
    _store_mod.DB_PATH = tmp_chat_db

    # Close existing singleton connection and point it at tmp DB
    _store_mod.message_log.close()
    _store_mod.message_log._db_path = tmp_chat_db
    _store_mod.message_log._conn = None

    _store_mod.message_log.clear()
    yield
    _store_mod.message_log.clear()
    _store_mod.message_log.close()

    _store_mod.DB_PATH = original_db_path
    _store_mod.message_log._db_path = original_db_path
    _store_mod.message_log._conn = None


@pytest.fixture(autouse=True)
def clean_database(tmp_path):
    """Clean up database tables between tests for isolation.

    Redirects every module-level DB_PATH to the per-test temp directory.
    """
    tmp_swarm_db = tmp_path / "swarm.db"
    tmp_spark_db = tmp_path / "spark.db"
    tmp_self_coding_db = tmp_path / "self_coding.db"
    tmp_tasks_db = tmp_path / "tasks.db"
    tmp_work_orders_db = tmp_path / "work_orders.db"

    _swarm_db_modules = [
        "infrastructure.models.registry",
    ]
    _memory_db_modules = [
        "timmy.memory_system",  # Canonical location
        "timmy.memory.unified",  # Backward compat
    ]
    _spark_db_modules = [
        "spark.memory",
        "spark.eidos",
    ]
    _self_coding_db_modules = []

    tmp_memory_db = tmp_path / "memory.db"

    originals = {}
    for mod_name in _swarm_db_modules:
        try:
            mod = __import__(mod_name, fromlist=["DB_PATH"])
            attr = "DB_PATH"
            originals[(mod_name, attr)] = getattr(mod, attr)
            setattr(mod, attr, tmp_swarm_db)
        except Exception:
            pass

    for mod_name in _memory_db_modules:
        try:
            mod = __import__(mod_name, fromlist=["DB_PATH"])
            originals[(mod_name, "DB_PATH")] = mod.DB_PATH
            mod.DB_PATH = tmp_memory_db
        except Exception:
            pass

    # Note: semantic_memory now re-exports from memory_system,
    # so DB_PATH is already patched via _memory_db_modules above

    for mod_name in _spark_db_modules:
        try:
            mod = __import__(mod_name, fromlist=["DB_PATH"])
            originals[(mod_name, "DB_PATH")] = mod.DB_PATH
            mod.DB_PATH = tmp_spark_db
        except Exception:
            pass

    for mod_name in _self_coding_db_modules:
        try:
            mod = __import__(mod_name, fromlist=["DEFAULT_DB_PATH"])
            originals[(mod_name, "DEFAULT_DB_PATH")] = mod.DEFAULT_DB_PATH
            mod.DEFAULT_DB_PATH = tmp_self_coding_db
        except Exception:
            pass

    # Redirect task queue and work orders DBs to temp dir.
    # IMPORTANT: swarm.task_queue.models also has a DB_PATH that writes to
    # tasks.db — it MUST be patched too, or error_capture.capture_error()
    # will write test data to the production database.
    tmp_sovereignty_db = tmp_path / "sovereignty_metrics.db"
    for mod_name, tmp_db in [
        ("dashboard.routes.tasks", tmp_tasks_db),
        ("dashboard.routes.work_orders", tmp_work_orders_db),
        ("swarm.task_queue.models", tmp_tasks_db),
        ("infrastructure.sovereignty_metrics", tmp_sovereignty_db),
    ]:
        try:
            mod = __import__(mod_name, fromlist=["DB_PATH"])
            originals[(mod_name, "DB_PATH")] = mod.DB_PATH
            mod.DB_PATH = tmp_db
        except Exception:
            pass

    yield

    for (mod_name, attr), original in originals.items():
        try:
            mod = __import__(mod_name, fromlist=[attr])
            setattr(mod, attr, original)
        except Exception:
            pass


@pytest.fixture(autouse=True)
def cleanup_event_loops():
    """Clean up any leftover event loops after each test."""
    import asyncio
    import warnings

    yield
    try:
        try:
            loop = asyncio.get_running_loop()
            return
        except RuntimeError:
            pass
        with warnings.catch_warnings():
            warnings.simplefilter("ignore", DeprecationWarning)
            loop = asyncio.get_event_loop_policy().get_event_loop()
        if loop and not loop.is_closed():
            loop.close()
    except RuntimeError:
        pass


@pytest.fixture
def client():
    """FastAPI test client with fresh app instance."""
    from fastapi.testclient import TestClient

    from dashboard.app import app

    with TestClient(app) as c:
        yield c


@pytest.fixture
def db_connection():
    """Provide a fresh in-memory SQLite connection for tests."""
    conn = sqlite3.connect(":memory:")
    conn.row_factory = sqlite3.Row
    conn.executescript("""
        CREATE TABLE IF NOT EXISTS agents (
            id TEXT PRIMARY KEY,
            name TEXT NOT NULL,
            status TEXT NOT NULL DEFAULT 'idle',
            capabilities TEXT DEFAULT '',
            registered_at TEXT NOT NULL,
            last_seen TEXT NOT NULL
        );
        CREATE TABLE IF NOT EXISTS tasks (
            id TEXT PRIMARY KEY,
            description TEXT NOT NULL,
            status TEXT NOT NULL DEFAULT 'pending',
            assigned_agent TEXT,
            result TEXT,
            created_at TEXT NOT NULL,
            completed_at TEXT
        );
    """)
    conn.commit()
    yield conn
    conn.close()


@pytest.fixture
def mock_ollama_client():
    """Provide a mock Ollama client for unit tests."""
    client = MagicMock()
    client.generate = MagicMock(return_value={"response": "Test response"})
    client.chat = MagicMock(return_value={"message": {"content": "Test chat response"}})
    client.list = MagicMock(return_value={"models": [{"name": "llama3.2"}]})
    return client


@pytest.fixture
def mock_timmy_agent():
    """Provide a mock Timmy agent for testing."""
    agent = MagicMock()
    agent.name = "Timmy"
    agent.run = MagicMock(return_value="Test response from Timmy")
    agent.chat = MagicMock(return_value="Test chat response")
    return agent