import pytest
from fastapi import status


def test_create_group(client, auth_headers):
    """Test creating a new group."""
    group_data = {"name": "New Test Group"}

    response = client.post("/groups/", json=group_data, headers=auth_headers)
    assert response.status_code == 200

    data = response.json()
    assert data["name"] == "New Test Group"
    assert "id" in data


def test_create_duplicate_group(client, auth_headers, test_group):
    """Test creating a group with a duplicate name."""
    group_data = {"name": test_group.name}

    response = client.post("/groups/", json=group_data, headers=auth_headers)
    # This should fail due to unique constraint
    assert response.status_code == 422  # Validation error


def test_get_groups(client, auth_headers, test_group):
    """Test retrieving all groups."""
    response = client.get("/groups/", headers=auth_headers)
    assert response.status_code == 200

    groups = response.json()
    assert len(groups) >= 1

    group_names = [group["name"] for group in groups]
    assert test_group.name in group_names


def test_delete_group(client, auth_headers, test_group):
    """Test deleting a group."""
    response = client.delete(f"/groups/{test_group.id}", headers=auth_headers)
    assert response.status_code == 200
    assert "deleted successfully" in response.json()["message"].lower()

    # Verify group is deleted
    response = client.get("/groups/", headers=auth_headers)
    groups = response.json()
    assert not any(group["id"] == test_group.id for group in groups)


def test_delete_nonexistent_group(client, auth_headers):
    """Test deleting a non-existent group."""
    response = client.delete("/groups/99999", headers=auth_headers)
    assert response.status_code == 404


def test_group_operations_by_non_admin(client, user_auth_headers):
    """Test that non-admin users cannot perform group operations."""
    # Try to create a group
    response = client.post(
        "/groups/", 
        json={"name": "test"}, 
        headers=user_auth_headers
    )
    assert response.status_code == 403

    # Try to get groups
    response = client.get("/groups/", headers=user_auth_headers)
    assert response.status_code == 403