"""Tests for setup_service and settings_repo."""

from __future__ import annotations

import asyncio
import inspect
from pathlib import Path
from unittest.mock import AsyncMock

import aiosqlite
import pytest

from app.db import init_db
from app.repositories import settings_repo
from app.services import settings_service, setup_service


@pytest.fixture
async def db(tmp_path: Path) -> aiosqlite.Connection:  # type: ignore[misc]
    """Provide an initialised aiosqlite connection for service-level tests."""
    conn: aiosqlite.Connection = await aiosqlite.connect(str(tmp_path / "test.db"))
    conn.row_factory = aiosqlite.Row
    await init_db(conn)
    yield conn
    await conn.close()


class TestIsSetupComplete:
    async def test_returns_false_on_fresh_db(
        self, db: aiosqlite.Connection
    ) -> None:
        """Setup is not complete on a fresh database."""
        assert await setup_service.is_setup_complete(db) is False

    async def test_returns_true_after_run_setup(
        self, db: aiosqlite.Connection, tmp_path: Path
    ) -> None:
        """Setup is marked complete after run_setup() succeeds."""
        await setup_service.run_setup(
            db,
            master_password="mypassword1",
            database_path=str(tmp_path / "test.db"),
            fail2ban_socket="/var/run/fail2ban/fail2ban.sock",
            timezone="UTC",
            session_duration_minutes=60,
        )
        assert await setup_service.is_setup_complete(db) is True


class TestRunSetup:
    async def test_persists_all_settings(
        self, db: aiosqlite.Connection, tmp_path: Path
    ) -> None:
        """run_setup() stores every provided setting when runtime DB equals the bootstrap DB."""
        await setup_service.run_setup(
            db,
            master_password="mypassword1",
            database_path=str(tmp_path / "test.db"),
            fail2ban_socket="/tmp/f2b.sock",
            timezone="Europe/Berlin",
            session_duration_minutes=120,
        )
        all_settings = await settings_repo.get_all_settings(db)
        assert all_settings["database_path"] == str(tmp_path / "test.db")
        assert all_settings["fail2ban_socket"] == "/tmp/f2b.sock"
        assert all_settings["timezone"] == "Europe/Berlin"
        assert all_settings["session_duration_minutes"] == "120"

    async def test_runs_setup_into_separate_runtime_database(
        self, db: aiosqlite.Connection, tmp_path: Path
    ) -> None:
        """run_setup() stores runtime configuration in the runtime DB only."""
        runtime_db_path = str(tmp_path / "runtime.db")
        await setup_service.run_setup(
            db,
            master_password="mypassword1",
            database_path=runtime_db_path,
            fail2ban_socket="/tmp/f2b.sock",
            timezone="Europe/Berlin",
            session_duration_minutes=120,
        )

        bootstrap_settings = await settings_repo.get_all_settings(db)
        assert bootstrap_settings["database_path"] == runtime_db_path
        assert bootstrap_settings["setup_completed"] == "1"
        assert "fail2ban_socket" not in bootstrap_settings
        assert "timezone" not in bootstrap_settings
        assert "session_duration_minutes" not in bootstrap_settings

        runtime_db = await aiosqlite.connect(runtime_db_path)
        runtime_db.row_factory = aiosqlite.Row
        try:
            runtime_settings = await settings_repo.get_all_settings(runtime_db)
        finally:
            await runtime_db.close()

        assert runtime_settings["fail2ban_socket"] == "/tmp/f2b.sock"
        assert runtime_settings["timezone"] == "Europe/Berlin"
        assert runtime_settings["session_duration_minutes"] == "120"
        assert runtime_settings["master_password_hash"] != "mypassword1"

    async def test_password_stored_as_bcrypt_hash(
        self, db: aiosqlite.Connection, tmp_path: Path
    ) -> None:
        """The master password is stored as a bcrypt hash, not plain text."""
        import bcrypt

        await setup_service.run_setup(
            db,
            master_password="mypassword1",
            database_path=str(tmp_path / "test.db"),
            fail2ban_socket="/var/run/fail2ban/fail2ban.sock",
            timezone="UTC",
            session_duration_minutes=60,
        )
        stored = await setup_service.get_password_hash(db)
        assert stored is not None
        assert stored != "mypassword1"
        # Verify it is a valid bcrypt hash.
        assert bcrypt.checkpw(b"mypassword1", stored.encode())

    async def test_raises_if_setup_already_complete(
        self, db: aiosqlite.Connection, tmp_path: Path
    ) -> None:
        """run_setup() raises RuntimeError if called a second time."""
        kwargs = {
            "master_password": "mypassword1",
            "database_path": str(tmp_path / "test.db"),
            "fail2ban_socket": "/var/run/fail2ban/fail2ban.sock",
            "timezone": "UTC",
            "session_duration_minutes": 60,
        }
        await setup_service.run_setup(db, **kwargs)  # type: ignore[arg-type]
        with pytest.raises(RuntimeError, match="already been completed"):
            await setup_service.run_setup(db, **kwargs)  # type: ignore[arg-type]

    async def test_does_not_mark_setup_complete_on_runtime_db_failure(
        self, db: aiosqlite.Connection, tmp_path: Path, monkeypatch: pytest.MonkeyPatch
    ) -> None:
        """run_setup() must not mark setup complete when runtime DB init fails."""
        monkeypatch.setattr(
            setup_service,
            "_ensure_database_initialized",
            AsyncMock(return_value=False),
        )

        with pytest.raises(RuntimeError, match="Runtime database could not be initialized"):
            await setup_service.run_setup(
                db,
                master_password="mypassword1",
                database_path=str(tmp_path / "runtime.db"),
                fail2ban_socket="/var/run/fail2ban/fail2ban.sock",
                timezone="UTC",
                session_duration_minutes=60,
            )

        assert await setup_service.is_setup_complete(db) is False
        bootstrap_settings = await settings_repo.get_all_settings(db)
        assert "setup_completed" not in bootstrap_settings
        assert not (tmp_path / "runtime.db").exists()

    async def test_initializes_map_color_thresholds_with_defaults(
        self, db: aiosqlite.Connection, tmp_path: Path
    ) -> None:
        """run_setup() initializes map color thresholds with default values."""
        await setup_service.run_setup(
            db,
            master_password="mypassword1",
            database_path=str(tmp_path / "test.db"),
            fail2ban_socket="/var/run/fail2ban/fail2ban.sock",
            timezone="UTC",
            session_duration_minutes=60,
        )
        high, medium, low = await settings_service.get_map_color_thresholds(db)
        assert high == 100
        assert medium == 50
        assert low == 20


class TestGetTimezone:
    async def test_returns_utc_on_fresh_db(self, db: aiosqlite.Connection) -> None:
        """get_timezone() returns 'UTC' before setup is run."""
        assert await setup_service.get_timezone(db) == "UTC"

    async def test_returns_configured_timezone(
        self, db: aiosqlite.Connection, tmp_path: Path
    ) -> None:
        """get_timezone() returns the value set during setup."""
        await setup_service.run_setup(
            db,
            master_password="mypassword1",
            database_path=str(tmp_path / "test.db"),
            fail2ban_socket="/var/run/fail2ban/fail2ban.sock",
            timezone="America/New_York",
            session_duration_minutes=60,
        )
        assert await setup_service.get_timezone(db) == "America/New_York"


class TestRunSetupAsync:
    """Verify the async/non-blocking bcrypt behavior of run_setup."""

    async def test_run_setup_is_coroutine_function(self) -> None:
        """run_setup must be declared as an async function."""
        assert inspect.iscoroutinefunction(setup_service.run_setup)

    async def test_password_hash_does_not_block_event_loop(
        self, db: aiosqlite.Connection, tmp_path: Path
    ) -> None:
        """run_setup completes without blocking; other coroutines can interleave."""

        async def noop() -> str:
            """A trivial coroutine that should run concurrently with setup."""
            await asyncio.sleep(0)
            return "ok"

        setup_coro = setup_service.run_setup(
            db,
            master_password="mypassword1",
            database_path=str(tmp_path / "test.db"),
            fail2ban_socket="/var/run/fail2ban/fail2ban.sock",
            timezone="UTC",
            session_duration_minutes=60,
        )
        # Both tasks should finish without error.
        results = await asyncio.gather(setup_coro, noop())
        assert results[1] == "ok"
        assert await setup_service.is_setup_complete(db) is True
