BanGUI/backend/app/services/protocols.py

"""Service interface protocols for dependency injection.

These structural protocols define the public contract that routers and higher
layers depend on, without binding them to concrete module implementations.
"""

from __future__ import annotations

from typing import TYPE_CHECKING, Protocol, runtime_checkable

if TYPE_CHECKING:
    from collections.abc import Awaitable, Callable

    import aiohttp
    import aiosqlite

    from app.models.auth import Session
    from app.models.ban import BanOrigin, JailBannedIpsResponse, TimeRange
    from app.models.blocklist import (
        BlocklistSource,
        ImportLogListResponse,
        ImportRunResult,
        ImportSourceResult,
        PreviewResponse,
        ScheduleConfig,
        ScheduleInfo,
    )
    from app.models.config import (
        AddLogPathRequest,
        GlobalConfigResponse,
        GlobalConfigUpdate,
        JailConfigListResponse,
        JailConfigResponse,
        JailConfigUpdate,
        LogPreviewRequest,
        LogPreviewResponse,
        MapColorThresholdsResponse,
        MapColorThresholdsUpdate,
        RegexTestResponse,
    )
    from app.models.geo import GeoEnricher, GeoInfo
    from app.models.history import HistoryListResponse, IpDetailResponse
    from app.models.jail import JailDetailResponse, JailListResponse
    from app.models.server import ServerSettingsResponse, ServerSettingsUpdate, ServerStatus
    from app.services.geo_cache import GeoCache


class AuthService(Protocol):
    """Protocol for authentication service operations."""

    async def login(
        self,
        db: aiosqlite.Connection,
        password: str,
        session_duration_minutes: int,
        session_secret: str,
        session_repo: object | None = None,
    ) -> tuple[str, str]:
        ...

    async def validate_session(
        self,
        db: aiosqlite.Connection,
        token: str,
        session_secret: str | None = None,
        session_repo: object | None = None,
    ) -> Session:
        ...

    async def logout(
        self,
        db: aiosqlite.Connection,
        token: str,
        session_secret: str | None = None,
        session_repo: object | None = None,
    ) -> str | None:
        ...


class JailService(Protocol):
    """Protocol for jail management service operations."""

    async def list_jails(self, socket_path: str) -> JailListResponse:
        ...

    async def get_jail(self, socket_path: str, name: str) -> JailDetailResponse:
        ...

    async def reload_all(self, socket_path: str) -> None:
        ...

    async def start_jail(self, socket_path: str, name: str) -> None:
        ...

    async def stop_jail(self, socket_path: str, name: str) -> None:
        ...

    async def set_idle(self, socket_path: str, name: str, *, on: bool) -> None:
        ...

    async def reload_jail(self, socket_path: str, name: str) -> None:
        ...

    async def get_ignore_list(self, socket_path: str, name: str) -> list[str]:
        ...

    async def add_ignore_ip(self, socket_path: str, name: str, ip: str) -> None:
        ...

    async def del_ignore_ip(self, socket_path: str, name: str, ip: str) -> None:
        ...

    async def set_ignore_self(self, socket_path: str, name: str, *, on: bool) -> None:
        ...

    async def get_jail_banned_ips(
        self,
        socket_path: str,
        jail_name: str,
        page: int,
        page_size: int,
        search: str | None = None,
        *,
        geo_batch_lookup: object,
        http_session: object,
        app_db: aiosqlite.Connection,
    ) -> JailBannedIpsResponse:
        ...

    async def lookup_ip(
        self,
        socket_path: str,
        ip: str,
        geo_enricher: object,
    ) -> object:
        ...


@runtime_checkable
class BlocklistService(Protocol):
    async def list_sources(self, db: aiosqlite.Connection) -> list[BlocklistSource]:
        ...

    async def get_source(
        self,
        db: aiosqlite.Connection,
        source_id: int,
    ) -> BlocklistSource | None:
        ...

    async def create_source(
        self,
        db: aiosqlite.Connection,
        name: str,
        url: str,
        *,
        enabled: bool = True,
    ) -> BlocklistSource:
        ...

    async def update_source(
        self,
        db: aiosqlite.Connection,
        source_id: int,
        *,
        name: str | None = None,
        url: str | None = None,
        enabled: bool | None = None,
    ) -> BlocklistSource | None:
        ...

    async def delete_source(self, db: aiosqlite.Connection, source_id: int) -> bool:
        ...

    async def preview_source(
        self,
        url: str,
        http_session: aiohttp.ClientSession,
        *,
        sample_lines: int = ...,
    ) -> PreviewResponse:
        ...

    async def import_source(
        self,
        source: BlocklistSource,
        http_session: aiohttp.ClientSession,
        socket_path: str,
        db: aiosqlite.Connection,
        *,
        geo_is_cached: Callable[[str], bool] | None = None,
        geo_cache: GeoCache | None = None,
        ban_ip: Callable[[str, str, str], Awaitable[None]],
    ) -> ImportSourceResult:
        ...

    async def import_all(
        self,
        db: aiosqlite.Connection,
        http_session: aiohttp.ClientSession,
        socket_path: str,
        *,
        ban_ip: Callable[[str, str, str], Awaitable[None]],
        geo_is_cached: Callable[[str], bool] | None = None,
        geo_cache: GeoCache | None = None,
    ) -> ImportRunResult:
        ...

    async def get_schedule(self, db: aiosqlite.Connection) -> ScheduleConfig:
        ...

    async def set_schedule(self, db: aiosqlite.Connection, update: ScheduleConfig) -> None:
        ...

    async def get_schedule_info(
        self,
        db: aiosqlite.Connection,
        next_run_at: str | None,
    ) -> ScheduleInfo:
        ...

    async def list_import_logs(
        self,
        db: aiosqlite.Connection,
        *,
        source_id: int | None = None,
        page: int = 1,
        page_size: int = 50,
    ) -> ImportLogListResponse:
        ...


@runtime_checkable
class ConfigService(Protocol):
    async def get_jail_config(self, socket_path: str, name: str) -> JailConfigResponse:
        ...

    async def list_jail_configs(self, socket_path: str) -> JailConfigListResponse:
        ...

    async def update_jail_config(
        self,
        socket_path: str,
        name: str,
        update: JailConfigUpdate,
    ) -> None:
        ...

    async def get_global_config(self, socket_path: str) -> GlobalConfigResponse:
        ...

    async def update_global_config(
        self,
        socket_path: str,
        update: GlobalConfigUpdate,
    ) -> None:
        ...

    def test_regex(self, request: object) -> RegexTestResponse:
        ...

    async def add_log_path(
        self,
        socket_path: str,
        jail: str,
        req: AddLogPathRequest,
    ) -> None:
        ...

    async def delete_log_path(self, socket_path: str, jail: str, log_path: str) -> None:
        ...

    async def preview_log(
        self,
        req: LogPreviewRequest,
        preview_fn: Callable[[LogPreviewRequest], Awaitable[LogPreviewResponse]] | None = None,
    ) -> LogPreviewResponse:
        ...

    async def get_map_color_thresholds(self, db: aiosqlite.Connection) -> MapColorThresholdsResponse:
        ...

    async def update_map_color_thresholds(
        self,
        db: aiosqlite.Connection,
        update: MapColorThresholdsUpdate,
    ) -> None:
        ...


@runtime_checkable
class HistoryService(Protocol):
    async def list_history(
        self,
        socket_path: str,
        *,
        range_: TimeRange | None = None,
        jail: str | None = None,
        ip_filter: str | None = None,
        origin: BanOrigin | None = None,
        source: str = "fail2ban",
        page: int = 1,
        page_size: int = 100,
        http_session: aiohttp.ClientSession | None = None,
        geo_enricher: GeoEnricher | None = None,
        db: aiosqlite.Connection | None = None,
    ) -> HistoryListResponse:
        ...

    async def get_ip_detail(
        self,
        socket_path: str,
        ip: str,
        *,
        http_session: aiohttp.ClientSession | None = None,
        geo_enricher: GeoEnricher | None = None,
    ) -> IpDetailResponse | None:
        ...


@runtime_checkable
class GeoService(Protocol):
    def clear_cache(self) -> None:
        ...

    def clear_neg_cache(self) -> None:
        ...

    def is_cached(self, ip: str) -> bool:
        ...

    def init_geoip(self, mmdb_path: str | None) -> None:
        ...

    async def cache_stats(self, db: aiosqlite.Connection) -> dict[str, int]:
        ...

    async def count_unresolved(self, db: aiosqlite.Connection) -> int:
        ...

    async def get_unresolved_ips(self, db: aiosqlite.Connection) -> list[str]:
        ...

    async def load_cache_from_db(self, db: aiosqlite.Connection) -> None:
        ...

    async def lookup(
        self,
        ip: str,
        http_session: aiohttp.ClientSession,
    ) -> GeoInfo | None:
        ...

    async def lookup_batch(
        self,
        ips: list[str],
        http_session: aiohttp.ClientSession,
        db: aiosqlite.Connection | None = None,
    ) -> dict[str, GeoInfo]:
        ...

    def lookup_cached_only(self, ip: str) -> GeoInfo | None:
        ...

    async def flush_dirty(self, db: aiosqlite.Connection) -> int:
        ...


@runtime_checkable
class HealthService(Protocol):
    async def probe(self, socket_path: str, timeout: float = ...) -> ServerStatus:
        ...


@runtime_checkable
class Fail2BanMetadataService(Protocol):
    """Protocol for fail2ban runtime metadata resolution and caching."""

    async def get_db_path(self, socket_path: str, *, force_refresh: bool = False) -> str:
        ...

    def invalidate_db_path(self, socket_path: str) -> None:
        ...


@runtime_checkable
class HealthProbe(Protocol):
    """Protocol for health probing functions that check fail2ban availability."""

    async def __call__(self, socket_path: str) -> ServerStatus:
        ...


@runtime_checkable
class ServerService(Protocol):
    async def get_settings(self, socket_path: str) -> ServerSettingsResponse:
        ...

    async def update_settings(
        self,
        socket_path: str,
        update: ServerSettingsUpdate,
    ) -> None:
        ...

    async def flush_logs(self, socket_path: str) -> str:
        ...