"""Tests for matrix_hermes.kanban — kanban board monitoring and notifications."""

import sqlite3
import tempfile
import time
from pathlib import Path
from unittest.mock import AsyncMock, MagicMock, patch

import pytest

from matrix_hermes.kanban import (
    KanbanDB,
    KanbanEvent,
    KanbanMonitor,
    KanbanSubscription,
    KanbanTask,
    format_event,
)


# ---------------------------------------------------------------------------
# Fixtures
# ---------------------------------------------------------------------------


@pytest.fixture
def kanban_db_path():
    """Create a temporary kanban database with test schema and data."""
    with tempfile.NamedTemporaryFile(suffix=".db", delete=False) as f:
        db_path = f.name

    conn = sqlite3.connect(db_path)
    conn.executescript("""
        CREATE TABLE tasks (
            id TEXT PRIMARY KEY, title TEXT NOT NULL, assignee TEXT,
            status TEXT NOT NULL, priority INTEGER DEFAULT 0,
            created_by TEXT, created_at INTEGER NOT NULL
        );
        CREATE TABLE task_events (
            id INTEGER PRIMARY KEY AUTOINCREMENT,
            task_id TEXT NOT NULL, run_id INTEGER,
            kind TEXT NOT NULL, payload TEXT, created_at INTEGER NOT NULL
        );
        CREATE TABLE task_comments (
            id INTEGER PRIMARY KEY AUTOINCREMENT,
            task_id TEXT NOT NULL, author TEXT NOT NULL,
            body TEXT NOT NULL, created_at INTEGER NOT NULL
        );
        CREATE TABLE kanban_notify_subs (
            task_id TEXT NOT NULL, platform TEXT NOT NULL,
            chat_id TEXT NOT NULL, thread_id TEXT NOT NULL DEFAULT '',
            user_id TEXT, notifier_profile TEXT,
            created_at INTEGER NOT NULL,
            last_event_id INTEGER NOT NULL DEFAULT 0,
            PRIMARY KEY (task_id, platform, chat_id, thread_id)
        );

        -- Test tasks
        INSERT INTO tasks VALUES
            ('t_test1', 'Test task one', 'coder', 'running', 1, 'user', 1000),
            ('t_test2', 'Test task two', 'reviewer', 'todo', 0, 'user', 1000);

        -- Test events
        INSERT INTO task_events (task_id, kind, payload, created_at) VALUES
            ('t_test1', 'created', '{"assignee":"coder","status":"todo"}', 1000),
            ('t_test1', 'claimed', '{"lock":"coder:123"}', 1005),
            ('t_test1', 'spawned', '{"pid":42}', 1010),
            ('t_test2', 'created', '{"assignee":"reviewer"}', 1020);

        -- Test subscription
        INSERT INTO kanban_notify_subs VALUES
            ('t_test1', 'matrix', '!room1:example.org', '', '@bot:example.org', 'monitor', 2000, 1);
    """)
    conn.commit()
    conn.close()

    yield db_path

    # Cleanup
    Path(db_path).unlink(missing_ok=True)


@pytest.fixture
def mock_matrix_client():
    """Create a mock MatrixClient that is 'connected'."""
    client = MagicMock()
    client.connected = True
    client.user_id = "@bot:example.org"
    client.send_message = AsyncMock(return_value=MagicMock(success=True, event_id="$evt123"))
    client.get_joined_rooms = AsyncMock(return_value=["!room1:example.org"])
    client.join_room = AsyncMock(return_value=True)
    return client


# ---------------------------------------------------------------------------
# KanbanDB tests
# ---------------------------------------------------------------------------


class TestKanbanDB:
    """Tests for KanbanDB."""

    def test_connect_and_close(self, kanban_db_path):
        db = KanbanDB(kanban_db_path)
        db.connect()
        assert db._conn is not None
        db.close()
        assert db._conn is None

    def test_get_task(self, kanban_db_path):
        db = KanbanDB(kanban_db_path)
        task = db.get_task("t_test1")
        assert task is not None
        assert task.id == "t_test1"
        assert task.title == "Test task one"
        assert task.assignee == "coder"
        assert task.status == "running"
        db.close()

    def test_get_task_nonexistent(self, kanban_db_path):
        db = KanbanDB(kanban_db_path)
        task = db.get_task("t_nonexistent")
        assert task is None
        db.close()

    def test_get_events_since(self, kanban_db_path):
        db = KanbanDB(kanban_db_path)
        events = db.get_events_since(0)
        assert len(events) == 4
        assert events[0].kind == "created"
        assert events[0].task_id == "t_test1"

        # After first event
        events2 = db.get_events_since(events[0].id)
        assert len(events2) == 3
        assert events2[0].kind == "claimed"
        db.close()

    def test_get_events_since_limit(self, kanban_db_path):
        db = KanbanDB(kanban_db_path)
        events = db.get_events_since(0, limit=2)
        assert len(events) == 2
        db.close()

    def test_get_latest_event_id(self, kanban_db_path):
        db = KanbanDB(kanban_db_path)
        latest = db.get_latest_event_id()
        assert latest > 0
        db.close()

    def test_get_matrix_subscriptions(self, kanban_db_path):
        db = KanbanDB(kanban_db_path)
        subs = db.get_matrix_subscriptions()
        assert len(subs) == 1
        assert subs[0].task_id == "t_test1"
        assert subs[0].chat_id == "!room1:example.org"
        assert subs[0].platform == "matrix"
        db.close()

    def test_get_comments_since(self, kanban_db_path):
        # Add a comment
        conn = sqlite3.connect(kanban_db_path)
        conn.execute(
            "INSERT INTO task_comments (task_id, author, body, created_at) "
            "VALUES ('t_test1', 'user', 'Nice work!', 1050)"
        )
        conn.commit()
        conn.close()

        db = KanbanDB(kanban_db_path)
        comments = db.get_comments_since(0)
        assert len(comments) == 1
        assert comments[0]["author"] == "user"
        assert comments[0]["body"] == "Nice work!"
        db.close()

    def test_update_subscription_last_event(self, kanban_db_path):
        db = KanbanDB(kanban_db_path)
        db.update_subscription_last_event("t_test1", "!room1:example.org", 99)

        # Verify
        conn = sqlite3.connect(kanban_db_path)
        row = conn.execute(
            "SELECT last_event_id FROM kanban_notify_subs "
            "WHERE task_id = 't_test1' AND platform = 'matrix'"
        ).fetchone()
        conn.close()
        assert row[0] == 99

    def test_auto_connect(self, kanban_db_path):
        db = KanbanDB(kanban_db_path)
        # Don't call connect explicitly
        task = db.get_task("t_test1")
        assert task is not None
        db.close()


# ---------------------------------------------------------------------------
# format_event tests
# ---------------------------------------------------------------------------


class TestFormatEvent:
    """Tests for format_event."""

    def test_created(self):
        event = KanbanEvent(
            id=1, task_id="t_test1", kind="created",
            payload={"assignee": "coder", "status": "todo"},
            created_at=1000,
        )
        task = KanbanTask(id="t_test1", title="My Task")
        msg = format_event(event, task)
        assert "New task" in msg
        assert "My Task" in msg

    def test_claimed(self):
        event = KanbanEvent(
            id=2, task_id="t_test1", kind="claimed",
            payload={"lock": "coder:123"},
            created_at=1005,
        )
        msg = format_event(event)
        assert "Claimed" in msg
        assert "coder" in msg

    def test_spawned(self):
        event = KanbanEvent(
            id=3, task_id="t_test1", kind="spawned",
            payload={"pid": 42},
            created_at=1010,
        )
        msg = format_event(event)
        assert "spawned" in msg.lower()
        assert "42" in msg

    def test_completed_with_summary(self):
        event = KanbanEvent(
            id=4, task_id="t_test1", kind="completed",
            payload={"summary": "All done!"},
            created_at=2000,
        )
        msg = format_event(event)
        assert "Completed" in msg
        assert "All done!" in msg

    def test_blocked_with_reason(self):
        event = KanbanEvent(
            id=5, task_id="t_test1", kind="blocked",
            payload={"reason": "Need auth token"},
            created_at=2000,
        )
        msg = format_event(event)
        assert "Blocked" in msg
        assert "Need auth token" in msg

    def test_timed_out(self):
        event = KanbanEvent(
            id=6, task_id="t_test1", kind="timed_out",
            created_at=2000,
        )
        msg = format_event(event)
        assert "Timed out" in msg

    def test_released(self):
        event = KanbanEvent(
            id=7, task_id="t_test1", kind="released",
            created_at=2000,
        )
        msg = format_event(event)
        assert "Released" in msg

    def test_unknown_kind(self):
        event = KanbanEvent(
            id=8, task_id="t_test1", kind="weird_event",
            created_at=2000,
        )
        msg = format_event(event)
        assert "weird_event" in msg
        assert "t_test1" in msg

    def test_timestamp_iso(self):
        event = KanbanEvent(
            id=1, task_id="t_test1", kind="created",
            created_at=1000,
        )
        assert "1970-01-01" in event.timestamp_iso


# ---------------------------------------------------------------------------
# KanbanMonitor tests
# ---------------------------------------------------------------------------


class TestKanbanMonitor:
    """Tests for KanbanMonitor."""

    def test_init_requires_connected_client(self, kanban_db_path):
        client = MagicMock()
        client.connected = False
        db = KanbanDB(kanban_db_path)

        with pytest.raises(RuntimeError, match="connected"):
            KanbanMonitor(client, db)

    def test_init_success(self, kanban_db_path, mock_matrix_client):
        db = KanbanDB(kanban_db_path)
        monitor = KanbanMonitor(mock_matrix_client, db, poll_interval=1.0)
        assert monitor.events_processed == 0
        assert monitor.notifications_sent == 0

    @pytest.mark.asyncio
    async def test_start_and_stop(self, kanban_db_path, mock_matrix_client):
        db = KanbanDB(kanban_db_path)
        monitor = KanbanMonitor(mock_matrix_client, db, poll_interval=0.1)

        # Start
        await monitor.start()
        assert monitor._running

        # Let it poll a couple times
        await asyncio_sleep(0.3)

        # Stop
        await monitor.stop()
        assert not monitor._running

    @pytest.mark.asyncio
    async def test_event_handler_called(self, kanban_db_path, mock_matrix_client):
        db = KanbanDB(kanban_db_path)
        monitor = KanbanMonitor(mock_matrix_client, db, poll_interval=0.1)

        handler_events = []

        async def my_handler(event, task):
            handler_events.append(event.kind)

        monitor.on_event(my_handler)

        await monitor.start()
        # Let the poll loop initialize and capture baseline event ID
        await asyncio_sleep(0.2)

        # Insert a new event after the monitor has started
        conn = sqlite3.connect(kanban_db_path)
        conn.execute(
            "INSERT INTO task_events (task_id, kind, payload, created_at) "
            "VALUES ('t_test1', 'blocked', '{\"reason\":\"test\"}', 1200)"
        )
        conn.commit()
        conn.close()

        await asyncio_sleep(0.5)
        await monitor.stop()

        # Should have processed new event
        assert len(handler_events) > 0

    @pytest.mark.asyncio
    async def test_notifies_subscribers(self, kanban_db_path, mock_matrix_client):
        db = KanbanDB(kanban_db_path)
        monitor = KanbanMonitor(mock_matrix_client, db, poll_interval=0.1)

        await monitor.start()
        # Let the poll loop initialize and capture baseline event ID
        await asyncio_sleep(0.2)

        # Add a new event after starting the monitor
        conn = sqlite3.connect(kanban_db_path)
        conn.execute(
            "INSERT INTO task_events (task_id, kind, payload, created_at) "
            "VALUES ('t_test1', 'completed', '{\"summary\":\"Done!\"}', 1100)"
        )
        conn.commit()
        conn.close()

        await asyncio_sleep(0.5)
        await monitor.stop()

        # Should have sent at least one notification
        assert monitor.notifications_sent >= 1

        # Verify send_message was called
        assert mock_matrix_client.send_message.called

    @pytest.mark.asyncio
    async def test_no_subscriptions_no_notifications(self, kanban_db_path, mock_matrix_client):
        # Remove the subscription
        conn = sqlite3.connect(kanban_db_path)
        conn.execute("DELETE FROM kanban_notify_subs")
        conn.commit()
        conn.close()

        # Add a new event
        conn = sqlite3.connect(kanban_db_path)
        conn.execute(
            "INSERT INTO task_events (task_id, kind, payload, created_at) "
            "VALUES ('t_test1', 'completed', '{}', 1100)"
        )
        conn.commit()
        conn.close()

        db = KanbanDB(kanban_db_path)
        monitor = KanbanMonitor(mock_matrix_client, db, poll_interval=0.1)

        await monitor.start()
        await asyncio_sleep(0.3)
        await monitor.stop()

        # No notifications should be sent (no subscriptions)
        assert monitor.notifications_sent == 0


# ---------------------------------------------------------------------------
# KanbanSubscription tests
# ---------------------------------------------------------------------------


class TestKanbanSubscription:
    """Tests for KanbanSubscription dataclass."""

    def test_defaults(self):
        sub = KanbanSubscription(
            task_id="t_test", platform="matrix", chat_id="!room:example.org",
        )
        assert sub.thread_id == ""
        assert sub.user_id == ""
        assert sub.last_event_id == 0

    def test_full(self):
        sub = KanbanSubscription(
            task_id="t_test", platform="matrix", chat_id="!room:example.org",
            thread_id="$evt_thread", user_id="@bot:example.org", last_event_id=42,
        )
        assert sub.thread_id == "$evt_thread"
        assert sub.user_id == "@bot:example.org"
        assert sub.last_event_id == 42


# ---------------------------------------------------------------------------
# KanbanTask tests
# ---------------------------------------------------------------------------


class TestKanbanTask:
    """Tests for KanbanTask dataclass."""

    def test_minimal(self):
        task = KanbanTask(id="t123", title="Minimal task")
        assert task.id == "t123"
        assert task.title == "Minimal task"
        assert task.assignee == ""
        assert task.status == "todo"
        assert task.priority == 0

    def test_full(self):
        task = KanbanTask(
            id="t456", title="Full task", assignee="coder",
            status="running", priority=1, created_by="user",
        )
        assert task.assignee == "coder"
        assert task.status == "running"


# Helpers
import asyncio as _asyncio


def asyncio_sleep(seconds):
    """Helper that works in both sync and async contexts for test waiting."""
    try:
        loop = _asyncio.get_running_loop()
        return _asyncio.sleep(seconds)
    except RuntimeError:
        time.sleep(seconds)
        fut = _asyncio.Future()
        fut.set_result(None)
        return fut