import pytest
from app import create_app
from unittest.mock import patch, MagicMock
import tempfile
import os

@pytest.fixture
def app():
    """Create application for testing."""
    app = create_app('development')
    app.config['TESTING'] = True
    # Use simple session for testing
    app.config['SECRET_KEY'] = 'test-secret-key'
    app.config['SESSION_TYPE'] = 'null'  # Disable server-side sessions for testing
    return app

@pytest.fixture
def client(app):
    """Create test client with session support."""
    with app.test_client() as client:
        with client.session_transaction() as sess:
            # Initialize session
            pass
        yield client

def test_login_missing_credentials(client):
    """Test login with missing credentials."""
    response = client.post('/api/auth/login', json={})
    assert response.status_code == 400
    data = response.get_json()
    assert 'error' in data

def test_login_empty_credentials(client):
    """Test login with empty credentials."""
    response = client.post('/api/auth/login', json={'username': '', 'password': ''})
    assert response.status_code == 400
    data = response.get_json()
    assert 'error' in data

@patch('app.routes.auth.NextcloudClient')
def test_login_invalid_credentials(mock_nc_client, client):
    """Test login with invalid credentials."""
    # Mock NextcloudClient to return False for verify_credentials
    mock_instance = MagicMock()
    mock_instance.verify_credentials.return_value = False
    mock_nc_client.return_value = mock_instance
    
    response = client.post('/api/auth/login', json={'username': 'testuser', 'password': 'wrongpass'})
    assert response.status_code == 401
    data = response.get_json()
    assert 'error' in data

@patch('app.routes.auth.NextcloudClient')
def test_login_success(mock_nc_client, client):
    """Test successful login."""
    # Mock NextcloudClient to return True for verify_credentials
    mock_instance = MagicMock()
    mock_instance.verify_credentials.return_value = True
    mock_instance.check_admin.return_value = False
    mock_nc_client.return_value = mock_instance
    
    response = client.post('/api/auth/login', json={'username': 'testuser', 'password': 'testpass'})
    assert response.status_code == 200
    data = response.get_json()
    assert data['success'] is True
    assert data['username'] == 'testuser'
    assert data['is_admin'] is False

@patch('app.routes.auth.NextcloudClient')
def test_login_admin_user(mock_nc_client, client):
    """Test login with admin user."""
    mock_instance = MagicMock()
    mock_instance.verify_credentials.return_value = True
    mock_instance.check_admin.return_value = True
    mock_nc_client.return_value = mock_instance
    
    response = client.post('/api/auth/login', json={'username': 'admin', 'password': 'adminpass'})
    assert response.status_code == 200
    data = response.get_json()
    assert data['success'] is True
    assert data['is_admin'] is True

def test_status_not_authenticated(client):
    """Test status endpoint when not authenticated."""
    response = client.get('/api/auth/status')
    assert response.status_code == 200
    data = response.get_json()
    assert data['authenticated'] is False

@patch('app.routes.auth.NextcloudClient')
def test_status_authenticated(mock_nc_client, client):
    """Test status endpoint when authenticated."""
    # First login
    mock_instance = MagicMock()
    mock_instance.verify_credentials.return_value = True
    mock_instance.check_admin.return_value = False
    mock_nc_client.return_value = mock_instance
    
    client.post('/api/auth/login', json={'username': 'testuser', 'password': 'testpass'})
    
    # Check status
    response = client.get('/api/auth/status')
    assert response.status_code == 200
    data = response.get_json()
    assert data['authenticated'] is True
    assert data['username'] == 'testuser'

@patch('app.routes.auth.NextcloudClient')
def test_logout(mock_nc_client, client):
    """Test logout functionality."""
    # First login
    mock_instance = MagicMock()
    mock_instance.verify_credentials.return_value = True
    mock_instance.check_admin.return_value = False
    mock_nc_client.return_value = mock_instance
    
    client.post('/api/auth/login', json={'username': 'testuser', 'password': 'testpass'})
    
    # Verify logged in
    response = client.get('/api/auth/status')
    data = response.get_json()
    assert data['authenticated'] is True
    
    # Logout
    response = client.post('/api/auth/logout')
    assert response.status_code == 200
    data = response.get_json()
    assert data['success'] is True
    
    # Verify logged out
    response = client.get('/api/auth/status')
    data = response.get_json()
    assert data['authenticated'] is False