"""Tests for notifications API endpoints."""
from datetime import datetime

import pytest
from fastapi.testclient import TestClient
from sqlalchemy.orm import Session

from app.models.notification import Notification
from app.models.user import User


@pytest.fixture
def test_notification(db: Session, test_user: User) -> Notification:
    """Create test notification."""
    notification = Notification(
        user_id=test_user.id,
        type="booking_created",
        title="Test Notification",
        message="This is a test notification",
        is_read=False,
        created_at=datetime.utcnow(),
    )
    db.add(notification)
    db.commit()
    db.refresh(notification)
    return notification


@pytest.fixture
def test_read_notification(db: Session, test_user: User) -> Notification:
    """Create read test notification."""
    notification = Notification(
        user_id=test_user.id,
        type="booking_approved",
        title="Read Notification",
        message="This notification has been read",
        is_read=True,
        created_at=datetime.utcnow(),
    )
    db.add(notification)
    db.commit()
    db.refresh(notification)
    return notification


@pytest.fixture
def other_user_notification(db: Session, test_admin: User) -> Notification:
    """Create notification for another user."""
    notification = Notification(
        user_id=test_admin.id,
        type="booking_created",
        title="Admin Notification",
        message="This belongs to admin",
        is_read=False,
        created_at=datetime.utcnow(),
    )
    db.add(notification)
    db.commit()
    db.refresh(notification)
    return notification


def test_get_notifications_for_user(
    client: TestClient,
    auth_headers: dict[str, str],
    test_notification: Notification,
    test_read_notification: Notification,
    other_user_notification: Notification,
) -> None:
    """Test getting all notifications for current user."""
    response = client.get("/api/notifications", headers=auth_headers)

    assert response.status_code == 200
    data = response.json()

    # Should only return notifications for current user
    assert len(data) == 2

    # Should be ordered by created_at DESC (most recent first)
    notification_ids = [n["id"] for n in data]
    assert test_notification.id in notification_ids
    assert test_read_notification.id in notification_ids
    assert other_user_notification.id not in notification_ids


def test_filter_unread_notifications(
    client: TestClient,
    auth_headers: dict[str, str],
    test_notification: Notification,
    test_read_notification: Notification,
) -> None:
    """Test filtering notifications by is_read status."""
    # Get only unread notifications
    response = client.get(
        "/api/notifications",
        headers=auth_headers,
        params={"is_read": False},
    )

    assert response.status_code == 200
    data = response.json()

    assert len(data) == 1
    assert data[0]["id"] == test_notification.id
    assert data[0]["is_read"] is False

    # Get only read notifications
    response = client.get(
        "/api/notifications",
        headers=auth_headers,
        params={"is_read": True},
    )

    assert response.status_code == 200
    data = response.json()

    assert len(data) == 1
    assert data[0]["id"] == test_read_notification.id
    assert data[0]["is_read"] is True


def test_mark_notification_as_read(
    client: TestClient,
    auth_headers: dict[str, str],
    test_notification: Notification,
) -> None:
    """Test marking a notification as read."""
    response = client.put(
        f"/api/notifications/{test_notification.id}/read",
        headers=auth_headers,
    )

    assert response.status_code == 200
    data = response.json()

    assert data["id"] == test_notification.id
    assert data["is_read"] is True
    assert data["title"] == "Test Notification"
    assert data["message"] == "This is a test notification"


def test_cannot_mark_others_notification(
    client: TestClient,
    auth_headers: dict[str, str],
    other_user_notification: Notification,
) -> None:
    """Test that users cannot mark other users' notifications as read."""
    response = client.put(
        f"/api/notifications/{other_user_notification.id}/read",
        headers=auth_headers,
    )

    assert response.status_code == 403
    data = response.json()
    assert "own notifications" in data["detail"].lower()


def test_mark_nonexistent_notification(
    client: TestClient,
    auth_headers: dict[str, str],
) -> None:
    """Test marking a non-existent notification as read."""
    response = client.put(
        "/api/notifications/99999/read",
        headers=auth_headers,
    )

    assert response.status_code == 404
    data = response.json()
    assert "not found" in data["detail"].lower()


def test_get_notifications_without_auth(client: TestClient) -> None:
    """Test that authentication is required for notifications endpoints."""
    response = client.get("/api/notifications")
    assert response.status_code == 403

    response = client.put("/api/notifications/1/read")
    assert response.status_code == 403