from __future__ import annotations

from contextlib import contextmanager
from typing import Any

from flask import Flask, g, jsonify

from atlas_portal.routes import account_overview as overview


class DummyResult:
    def __init__(self, row: dict[str, Any] | None = None) -> None:
        self.row = row

    def fetchone(self) -> dict[str, Any] | None:
        return self.row


class DummyConn:
    def __init__(self, *, request_code: str = "alice~CODE", step_done: bool = True, fail: bool = False) -> None:
        self.request_code = request_code
        self.step_done = step_done
        self.fail = fail
        self.executed: list[tuple[str, object | None]] = []

    def execute(self, query: str, params: object | None = None) -> DummyResult:
        self.executed.append((query, params))
        if self.fail:
            raise RuntimeError("database failed")
        if "access_request_onboarding_steps" in query:
            return DummyResult({"exists": 1} if self.step_done else None)
        if "FROM access_requests" in query:
            return DummyResult({"request_code": self.request_code} if self.request_code else None)
        return DummyResult()


class DummyAdmin:
    def __init__(
        self,
        *,
        ready: bool = True,
        user: dict[str, Any] | None = None,
        full: dict[str, Any] | None = None,
        fail_find: bool = False,
    ) -> None:
        self._ready = ready
        self.user = user if user is not None else {"id": "user-1", "email": "alice@idp.dev", "attributes": {}}
        self.full = full if full is not None else {"email": "full@idp.dev", "attributes": {}}
        self.fail_find = fail_find

    def ready(self) -> bool:
        return self._ready

    def find_user(self, username: str) -> dict[str, Any] | None:
        if self.fail_find:
            raise RuntimeError("keycloak failed")
        return self.user

    def get_user(self, user_id: str) -> dict[str, Any]:
        return self.full


class DummyAriadne:
    def enabled(self) -> bool:
        return False


def make_client(
    monkeypatch,
    *,
    admin: DummyAdmin | None = None,
    conn: DummyConn | None = None,
    account_ok: bool = True,
    username: str = "alice",
    email: str = "",
):
    app = Flask(__name__)
    active_admin = admin or DummyAdmin()
    active_conn = conn or DummyConn()

    monkeypatch.setattr(overview, "require_auth", lambda fn: fn)
    monkeypatch.setattr(
        overview,
        "require_account_access",
        lambda: (True, None) if account_ok else (False, (jsonify({"error": "forbidden"}), 403)),
    )
    monkeypatch.setattr(overview, "admin_client", lambda: active_admin)
    monkeypatch.setattr(overview, "ariadne_client", DummyAriadne())
    monkeypatch.setattr(overview.settings, "MAILU_DOMAIN", "bstein.dev")
    monkeypatch.setattr(overview.settings, "PORTAL_DATABASE_URL", "postgres://portal")
    monkeypatch.setattr(overview.settings, "PORTAL_PUBLIC_BASE_URL", "https://portal.example.dev")
    monkeypatch.setattr(overview.settings, "JELLYFIN_LDAP_HOST", "ldap.example.dev")
    monkeypatch.setattr(overview.settings, "JELLYFIN_LDAP_PORT", 389)
    monkeypatch.setattr(overview.settings, "JELLYFIN_LDAP_CHECK_TIMEOUT_SEC", 1)

    @contextmanager
    def connect():
        yield active_conn

    monkeypatch.setattr(overview, "connect", connect)

    @app.before_request
    def set_user() -> None:
        g.keycloak_username = username
        g.keycloak_email = email
        g.keycloak_groups = ["dev"]

    overview.register_account_overview(app)
    return app.test_client(), active_conn


def full_attrs(prefix: str = "") -> dict[str, Any]:
    return {
        "mailu_email": f"{prefix}mail@example.dev",
        "mailu_app_password": f"{prefix}mail-pw",
        "nextcloud_mail_primary_email": f"{prefix}mail@example.dev",
        "nextcloud_mail_account_count": "2",
        "nextcloud_mail_synced_at": f"{prefix}synced",
        "wger_password": f"{prefix}wger-pw",
        "wger_password_updated_at": f"{prefix}wger-updated",
        "firefly_password": f"{prefix}firefly-pw",
        "firefly_password_updated_at": f"{prefix}firefly-updated",
        "vaultwarden_email": f"{prefix}vault@example.dev",
        "vaultwarden_status": f"{prefix}active",
        "vaultwarden_synced_at": f"{prefix}vault-synced",
        "vaultwarden_master_password_set_at": f"{prefix}vault-master",
    }


def list_attrs(attrs: dict[str, Any]) -> dict[str, list[str]]:
    return {key: [str(value)] for key, value in attrs.items()}


def test_tcp_check_paths(monkeypatch) -> None:
    class SocketContext:
        def __enter__(self):
            return self

        def __exit__(self, exc_type, exc, tb):
            return False

    monkeypatch.setattr(overview.socket, "create_connection", lambda *args, **kwargs: SocketContext())
    assert overview._tcp_check("host", 443, 1) is True
    assert overview._tcp_check("", 443, 1) is False
    assert overview._tcp_check("host", 0, 1) is False
    monkeypatch.setattr(overview.socket, "create_connection", lambda *args, **kwargs: (_ for _ in ()).throw(OSError()))
    assert overview._tcp_check("host", 443, 1) is False


def test_overview_preflight_and_admin_unavailable(monkeypatch) -> None:
    client, _conn = make_client(monkeypatch, account_ok=False)
    assert client.get("/api/account/overview").status_code == 403

    client, _conn = make_client(monkeypatch, admin=DummyAdmin(ready=False))
    data = client.get("/api/account/overview").get_json()
    assert data["mailu"]["status"] == "server not configured"
    assert data["jellyfin"]["sync_detail"] == "keycloak admin not configured"


def test_overview_reads_list_attributes_and_reports_ldap_ok(monkeypatch) -> None:
    attrs = list_attrs(full_attrs())
    user = {"id": "user-1", "email": "alice@idp.dev", "federationLink": "ldap", "attributes": attrs}
    client, _conn = make_client(monkeypatch, admin=DummyAdmin(user=user))
    monkeypatch.setattr(overview, "_tcp_check", lambda *args, **kwargs: True)

    data = client.get("/api/account/overview").get_json()

    assert data["user"] == {"username": "alice", "email": "alice@idp.dev", "groups": ["dev"]}
    assert data["mailu"]["app_password"] == "mail-pw"
    assert data["nextcloud_mail"]["status"] == "ready"
    assert data["wger"]["password"] == "wger-pw"
    assert data["firefly"]["password"] == "firefly-pw"
    assert data["vaultwarden"]["status"] == "ready"
    assert data["jellyfin"]["sync_status"] == "ok"


def test_overview_reads_string_attributes_and_database_confirmed_step(monkeypatch) -> None:
    attrs = full_attrs("str-")
    attrs["vaultwarden_master_password_set_at"] = ""
    attrs["vaultwarden_status"] = "invited"
    attrs["nextcloud_mail_account_count"] = "not-a-number"
    user = {"id": "user-1", "email": "alice@idp.dev", "attributes": attrs}
    client, _conn = make_client(monkeypatch, admin=DummyAdmin(user=user))
    monkeypatch.setattr(overview, "_tcp_check", lambda *args, **kwargs: False)

    data = client.get("/api/account/overview").get_json()

    assert data["nextcloud_mail"]["status"] == "needs sync"
    assert data["vaultwarden"]["status"] == "ready"
    assert data["jellyfin"]["sync_status"] == "degraded"
    assert data["jellyfin"]["sync_detail"] == "LDAP unreachable"
    assert data["onboarding_url"] == "https://portal.example.dev/onboarding?code=alice~CODE"


def test_overview_falls_back_to_full_user_list_attributes(monkeypatch) -> None:
    user = {"id": "user-1", "attributes": {}}
    full = {"email": "full@example.dev", "attributes": list_attrs(full_attrs("full-"))}
    client, _conn = make_client(monkeypatch, admin=DummyAdmin(user=user, full=full), email="")
    monkeypatch.setattr(overview, "_tcp_check", lambda *args, **kwargs: True)

    data = client.get("/api/account/overview").get_json()

    assert data["user"]["email"] == "full@example.dev"
    assert data["mailu"]["username"] == "full-mail@example.dev"
    assert data["nextcloud_mail"]["primary_email"] == "full-mail@example.dev"
    assert data["vaultwarden"]["username"] == "full-vault@example.dev"
    assert data["jellyfin"]["sync_status"] == "degraded"
    assert data["jellyfin"]["sync_detail"] == "Keycloak user is not LDAP-backed"


def test_overview_falls_back_to_full_user_string_attributes(monkeypatch) -> None:
    user = {"id": "user-1", "attributes": {}}
    full = {"email": "full@example.dev", "attributes": full_attrs("full-str-")}
    client, _conn = make_client(monkeypatch, admin=DummyAdmin(user=user, full=full), email="")
    monkeypatch.setattr(overview, "_tcp_check", lambda *args, **kwargs: True)

    data = client.get("/api/account/overview").get_json()

    assert data["mailu"]["app_password"] == "full-str-mail-pw"
    assert data["wger"]["password_updated_at"] == "full-str-wger-updated"
    assert data["firefly"]["password_updated_at"] == "full-str-firefly-updated"
    assert data["vaultwarden"]["synced_at"] == "full-str-vault-synced"


def test_overview_handles_keycloak_and_database_failures(monkeypatch) -> None:
    client, _conn = make_client(monkeypatch, admin=DummyAdmin(fail_find=True), conn=DummyConn(fail=True))
    data = client.get("/api/account/overview").get_json()

    assert data["mailu"]["status"] == "unavailable"
    assert data["nextcloud_mail"]["status"] == "unavailable"
    assert data["wger"]["status"] == "unavailable"
    assert data["firefly"]["status"] == "unavailable"
    assert data["vaultwarden"]["status"] == "unavailable"
    assert data["jellyfin"]["sync_detail"] == "unavailable"