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"""Unit tests for admin user-management model functions."""
import pytest

from gn_auth.auth.db import sqlite3 as db
from gn_auth.auth.authorisation.users.admin.models import create_verified_user

# ---------------------------------------------------------------------------
# Helpers
# ---------------------------------------------------------------------------

def _credential_count(conn, user_id: str) -> int:
    with db.cursor(conn) as cursor:
        cursor.execute(
            "SELECT COUNT(*) AS cnt FROM user_credentials WHERE user_id=?",
            (user_id,))
        return cursor.fetchone()["cnt"]


@pytest.mark.unit_test
def test_create_verified_user_sets_verified_flag(conn_after_auth_migrations):
    """
    GIVEN: a database with migrations applied
    WHEN: create_verified_user is called with valid email, name and password
    THEN: the returned user has verified=True and the flag is persisted in the DB
    """
    conn = conn_after_auth_migrations
    user = create_verified_user(conn, "new@example.org", "New User", "s3cr3t")
    assert user.verified is True
    with db.cursor(conn) as cursor:
        cursor.execute(
            "SELECT verified FROM users WHERE user_id=?", (str(user.user_id),))
        row = cursor.fetchone()
    assert row is not None
    assert bool(row["verified"]) is True


@pytest.mark.unit_test
def test_create_verified_user_has_no_roles(conn_after_auth_migrations):
    """
    GIVEN: a database with migrations applied
    WHEN: create_verified_user is called with valid email, name and password
    THEN: the new user is assigned no roles
    """
    conn = conn_after_auth_migrations
    user = create_verified_user(conn, "noroles@example.org", "No Roles User", "s3cr3t")
    with db.cursor(conn) as cursor:
        cursor.execute(
            "SELECT COUNT(*) AS cnt FROM user_roles WHERE user_id=?",
            (str(user.user_id),))
        row = cursor.fetchone()
    assert row["cnt"] == 0


@pytest.mark.unit_test
def test_create_verified_user_stores_credentials(conn_after_auth_migrations):
    """
    GIVEN: a database with migrations applied
    WHEN: create_verified_user is called with valid email, name and password
    THEN: a password credential row is stored for the new user
    """
    conn = conn_after_auth_migrations
    user = create_verified_user(conn, "creds@example.org", "Creds User", "s3cr3t")
    assert _credential_count(conn, str(user.user_id)) == 1


@pytest.mark.unit_test
def test_create_verified_user_raises_on_duplicate_email(conn_after_auth_migrations):
    """
    GIVEN: a user already exists with a given email
    WHEN: create_verified_user is called with the same email
    THEN: an exception is raised
    """
    conn = conn_after_auth_migrations
    create_verified_user(conn, "dupe@example.org", "First User", "s3cr3t")
    with pytest.raises(Exception):
        create_verified_user(conn, "dupe@example.org", "Second User", "s3cr3t")