"""Tests for the service credential tester (CT-101..CT-113, CT-119)."""

from __future__ import annotations

from types import SimpleNamespace
from unittest.mock import MagicMock, patch

import requests

from media_library_viewer_api.integrations.alertmanager import test_connection as am_test
from media_library_viewer_api.integrations.authentik import test_connection as ak_test
from media_library_viewer_api.integrations.base import translate_connection_error
from media_library_viewer_api.integrations.jellyfin import test_connection as jf_test
from media_library_viewer_api.integrations.nextcloud import test_connection as nc_test
from media_library_viewer_api.integrations.prometheus import test_connection as prom_test
from media_library_viewer_api.integrations.qbittorrent import test_connection as qbit_test
from media_library_viewer_api.integrations.remote_machine import test_connection as ssh_test

# ---------------------------------------------------------------------------
# translate_connection_error (CT-119)
# ---------------------------------------------------------------------------


class TestTranslateConnectionError:
    def test_http_401_maps_to_auth_message(self) -> None:
        resp = SimpleNamespace(status_code=401)
        exc = requests.HTTPError(response=resp)
        result = translate_connection_error(exc)
        assert not result.ok
        assert "Authentication failed" in result.detail

    def test_http_403_maps_to_auth_message(self) -> None:
        resp = SimpleNamespace(status_code=403)
        exc = requests.HTTPError(response=resp)
        result = translate_connection_error(exc)
        assert not result.ok
        assert "Authentication failed" in result.detail

    def test_connection_error_dns_maps_to_host_not_found(self) -> None:
        exc = requests.ConnectionError("getaddrinfo failed")
        result = translate_connection_error(exc)
        assert not result.ok
        assert "Host not found" in result.detail

    def test_timeout_maps_to_timed_out(self) -> None:
        exc = requests.Timeout("timed out")
        result = translate_connection_error(exc)
        assert not result.ok
        assert "timed out" in result.detail.lower()

    def test_generic_fallback_includes_context(self) -> None:
        exc = ValueError("something weird happened")
        result = translate_connection_error(exc, context="qBittorrent")
        assert not result.ok
        assert "qBittorrent" in result.detail
        assert "something weird happened" in result.detail


# ---------------------------------------------------------------------------
# qbittorrent (CT-104)
# ---------------------------------------------------------------------------


class TestQbittorrentTestConnection:
    def test_success_returns_version(self) -> None:
        mock_client = MagicMock()
        mock_client.maindata.return_value = {"server_state": {"qbittorrent_version": "v4.6.0"}}
        with patch("media_library_viewer_api.integrations.qbittorrent.QbittorrentClient", return_value=mock_client):
            result = qbit_test(
                {"base_url": "http://qb:8080", "timeout_seconds": 5},
                {"username": "u", "password": "p"},
                MagicMock(),
            )
        assert result.ok
        assert result.evidence == "v4.6.0"

    def test_login_failed_translates_to_auth_message(self) -> None:
        mock_client = MagicMock()
        # Mirrors the real _login auth-failure message for a "Fails." body.
        mock_client.maindata.side_effect = RuntimeError(
            "qBittorrent login failed (HTTP 200): invalid username or password"
        )
        with patch("media_library_viewer_api.integrations.qbittorrent.QbittorrentClient", return_value=mock_client):
            result = qbit_test({"base_url": "http://qb:8080"}, {"username": "u", "password": "p"}, MagicMock())
        assert not result.ok
        assert "Authentication failed" in result.detail

    def test_gateway_error_does_not_masquerade_as_auth_failure(self) -> None:
        mock_client = MagicMock()
        # A 504 from the reverse proxy must NOT be reported as "Authentication
        # failed" — that misled users into re-entering correct credentials.
        mock_client.maindata.side_effect = RuntimeError(
            "qBittorrent is unreachable: reverse proxy returned HTTP 504 for http://qb:8080/api/v2/auth/login."
        )
        with patch("media_library_viewer_api.integrations.qbittorrent.QbittorrentClient", return_value=mock_client):
            result = qbit_test({"base_url": "http://qb:8080"}, {"username": "u", "password": "p"}, MagicMock())
        assert not result.ok
        assert "Authentication failed" not in result.detail
        assert "504" in result.detail

    def test_connection_error_translates(self) -> None:
        mock_client = MagicMock()
        mock_client.maindata.side_effect = requests.ConnectionError("Connection refused")
        with patch("media_library_viewer_api.integrations.qbittorrent.QbittorrentClient", return_value=mock_client):
            result = qbit_test({"base_url": "http://qb:8080"}, {"username": "u", "password": "p"}, MagicMock())
        assert not result.ok
        assert "Connection refused" in result.detail


# ---------------------------------------------------------------------------
# prometheus (CT-105)
# ---------------------------------------------------------------------------


class TestPrometheusTestConnection:
    def test_success_returns_gateway_evidence(self) -> None:
        payload = SimpleNamespace(raise_for_status=lambda: None, json=lambda: {"results": {}})
        with patch("media_library_viewer_api.integrations.prometheus.requests.post", return_value=payload):
            result = prom_test(
                {"grafana_url": "http://grafana:3000", "datasource_uid": "prometheus"},
                {"grafana_api_key": "tok"},
                MagicMock(),
            )
        assert result.ok
        assert "Gateway" in (result.evidence or "")

    def test_missing_url_returns_error_without_network(self) -> None:
        result = prom_test({}, {"grafana_api_key": "tok"}, MagicMock())
        assert not result.ok
        assert "URL" in result.detail

    def test_missing_api_key_returns_error_without_network(self) -> None:
        result = prom_test({"grafana_url": "http://grafana:3000"}, {}, MagicMock())
        assert not result.ok
        assert "API key" in result.detail

    def test_http_401_translates_to_auth(self) -> None:
        exc = requests.HTTPError(response=SimpleNamespace(status_code=401))
        payload = SimpleNamespace(raise_for_status=MagicMock(side_effect=exc))
        with patch("media_library_viewer_api.integrations.prometheus.requests.post", return_value=payload):
            result = prom_test(
                {"grafana_url": "http://grafana:3000"},
                {"grafana_api_key": "wrong"},
                MagicMock(),
            )
        assert not result.ok
        assert "Authentication failed" in result.detail


# ---------------------------------------------------------------------------
# alertmanager (CT-106)
# ---------------------------------------------------------------------------


class TestAlertmanagerTestConnection:
    def test_success_returns_version(self) -> None:
        payload = SimpleNamespace(
            raise_for_status=lambda: None,
            json=lambda: {"versionInfo": {"version": "0.27.0"}},
        )
        with patch("media_library_viewer_api.integrations.alertmanager.requests.get", return_value=payload):
            result = am_test({"base_url": "http://am:9093"}, {}, MagicMock())
        assert result.ok
        assert result.evidence == "0.27.0"

    def test_connection_refused_translates(self) -> None:
        with patch(
            "media_library_viewer_api.integrations.alertmanager.requests.get",
            side_effect=requests.ConnectionError("refused"),
        ):
            result = am_test({"base_url": "http://am:9093"}, {}, MagicMock())
        assert not result.ok
        assert "Connection refused" in result.detail


# ---------------------------------------------------------------------------
# jellyfin (CT-107)
# ---------------------------------------------------------------------------


class TestJellyfinTestConnection:
    def test_success_returns_user_count(self) -> None:
        mock_client = MagicMock()
        mock_client.users.return_value = [{"Name": "a"}, {"Name": "b"}]
        with patch("media_library_viewer_api.integrations.jellyfin.JellyfinClient", return_value=mock_client):
            result = jf_test({"base_url": "http://jf:8096"}, {"api_key": "k"}, MagicMock())
        assert result.ok
        assert "2 users" == result.evidence

    def test_http_401_translates_to_auth(self) -> None:
        mock_client = MagicMock()
        mock_client.users.side_effect = requests.HTTPError(response=SimpleNamespace(status_code=401))
        with patch("media_library_viewer_api.integrations.jellyfin.JellyfinClient", return_value=mock_client):
            result = jf_test({"base_url": "http://jf:8096"}, {"api_key": "wrong"}, MagicMock())
        assert not result.ok
        assert "Authentication failed" in result.detail


# ---------------------------------------------------------------------------
# authentik (CT-108)
# ---------------------------------------------------------------------------


class TestAuthentikTestConnection:
    def test_success_returns_user_count(self) -> None:
        mock_client = MagicMock()
        mock_client.users.return_value = {"total": 5, "items": []}
        with patch("media_library_viewer_api.integrations.authentik.AuthentikClient", return_value=mock_client):
            result = ak_test({"base_url": "http://ak:9000"}, {"api_token": "tok"}, MagicMock())
        assert result.ok
        assert "5 users" == result.evidence

    def test_connection_error_translates(self) -> None:
        mock_client = MagicMock()
        mock_client.users.side_effect = requests.ConnectionError("refused")
        with patch("media_library_viewer_api.integrations.authentik.AuthentikClient", return_value=mock_client):
            result = ak_test({"base_url": "http://ak:9000"}, {"api_token": "tok"}, MagicMock())
        assert not result.ok
        assert "Connection refused" in result.detail


# ---------------------------------------------------------------------------
# ssh_tasks (CT-109)
# ---------------------------------------------------------------------------


class TestSshTasksTestConnection:
    def test_success_returns_connected_evidence(self) -> None:
        mock_client = MagicMock()
        with patch("media_library_viewer_api.services.task_runner.build_ssh_client", return_value=mock_client):
            result = ssh_test({"host": "srv", "port": 22, "username": "u"}, {"passphrase": ""}, MagicMock())
        assert result.ok
        assert "Connected to srv:22" == result.evidence

    def test_auth_failed_translates_to_ssh_auth_message(self) -> None:
        mock_client = MagicMock()
        mock_client.connect.side_effect = Exception("SSH authentication failed")
        with patch("media_library_viewer_api.services.task_runner.build_ssh_client", return_value=mock_client):
            result = ssh_test({"host": "srv", "port": 22, "username": "u"}, {}, MagicMock())
        assert not result.ok
        assert "SSH authentication failed" in result.detail

    def test_protocol_banner_translates(self) -> None:
        mock_client = MagicMock()
        mock_client.connect.side_effect = Exception("protocol banner error")
        with patch("media_library_viewer_api.services.task_runner.build_ssh_client", return_value=mock_client):
            result = ssh_test({"host": "srv", "port": 22, "username": "u"}, {}, MagicMock())
        assert not result.ok
        assert "SSH banner" in result.detail

    def test_missing_host_returns_value_error(self) -> None:
        result = ssh_test({"host": "", "username": "u"}, {}, MagicMock())
        assert not result.ok


# ---------------------------------------------------------------------------
# nextcloud (CT-110)
# ---------------------------------------------------------------------------


class TestNextcloudTestConnection:
    def test_success_returns_version(self) -> None:
        payload = SimpleNamespace(raise_for_status=lambda: None, json=lambda: {"version": "29.0.0"})
        with patch("media_library_viewer_api.integrations.nextcloud.requests.get", return_value=payload):
            result = nc_test({"base_url": "http://nc:80"}, {}, MagicMock())
        assert result.ok
        assert result.evidence == "29.0.0"

    def test_connection_error_translates(self) -> None:
        with patch(
            "media_library_viewer_api.integrations.nextcloud.requests.get",
            side_effect=requests.ConnectionError("refused"),
        ):
            result = nc_test({"base_url": "http://nc:80"}, {}, MagicMock())
        assert not result.ok
        assert "Connection refused" in result.detail