# ABOUTME: Tests for current user detection and avatar loading.
# ABOUTME: Verifies user info retrieval from the system.

import os
from pathlib import Path
from unittest.mock import patch

from moonlock.users import get_current_user, get_avatar_path, User


class TestGetCurrentUser:
    """Tests for current user detection."""

    @patch("moonlock.users.os.getlogin", return_value="testuser")
    @patch("moonlock.users.pwd.getpwnam")
    def test_returns_user_with_correct_username(self, mock_pwd, mock_login):
        mock_pwd.return_value.pw_name = "testuser"
        mock_pwd.return_value.pw_gecos = "Test User"
        mock_pwd.return_value.pw_dir = "/home/testuser"
        mock_pwd.return_value.pw_uid = 1000
        user = get_current_user()
        assert user.username == "testuser"
        assert user.display_name == "Test User"
        assert user.home == Path("/home/testuser")

    @patch("moonlock.users.os.getlogin", return_value="testuser")
    @patch("moonlock.users.pwd.getpwnam")
    def test_empty_gecos_falls_back_to_username(self, mock_pwd, mock_login):
        mock_pwd.return_value.pw_name = "testuser"
        mock_pwd.return_value.pw_gecos = ""
        mock_pwd.return_value.pw_dir = "/home/testuser"
        mock_pwd.return_value.pw_uid = 1000
        user = get_current_user()
        assert user.display_name == "testuser"

    @patch("moonlock.users.os.getlogin", return_value="testuser")
    @patch("moonlock.users.pwd.getpwnam")
    def test_gecos_with_commas_uses_first_field(self, mock_pwd, mock_login):
        mock_pwd.return_value.pw_name = "testuser"
        mock_pwd.return_value.pw_gecos = "Test User,,,Room 42"
        mock_pwd.return_value.pw_dir = "/home/testuser"
        mock_pwd.return_value.pw_uid = 1000
        user = get_current_user()
        assert user.display_name == "Test User"


class TestGetAvatarPath:
    """Tests for avatar path resolution."""

    def test_returns_face_file_if_exists(self, tmp_path: Path):
        face = tmp_path / ".face"
        face.write_text("fake image")
        path = get_avatar_path(tmp_path)
        assert path == face

    def test_returns_accountsservice_icon_if_exists(self, tmp_path: Path):
        username = "testuser"
        icons_dir = tmp_path / "icons"
        icons_dir.mkdir()
        icon = icons_dir / username
        icon.write_text("fake image")
        path = get_avatar_path(
            tmp_path, username=username, accountsservice_dir=icons_dir
        )
        assert path == icon

    def test_face_file_takes_priority_over_accountsservice(self, tmp_path: Path):
        face = tmp_path / ".face"
        face.write_text("fake image")
        icons_dir = tmp_path / "icons"
        icons_dir.mkdir()
        icon = icons_dir / "testuser"
        icon.write_text("fake image")
        path = get_avatar_path(
            tmp_path, username="testuser", accountsservice_dir=icons_dir
        )
        assert path == face

    def test_returns_none_when_no_avatar(self, tmp_path: Path):
        path = get_avatar_path(tmp_path)
        assert path is None