#!/usr/bin/env python3
"""
Unit tests for SessionNotifier class
"""

import pytest
import os
import asyncio
from unittest.mock import patch, MagicMock

# Add the parent directory to the path
import sys
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

from session_notifier import SessionNotifier

@pytest.fixture
def email_credentials():
    return {
        "from": "test@example.com",
        "to": "recipient@example.com",
        "password": "password123"
    }

@pytest.fixture
def telegram_credentials():
    return {
        "token": "telegram_token",
        "chat_id": "123456789"
    }

@pytest.fixture
def session_notifier(email_credentials, telegram_credentials):
    return SessionNotifier(
        email_credentials=email_credentials,
        telegram_credentials=telegram_credentials,
        enable_email=True,
        enable_telegram=True
    )

@pytest.mark.asyncio
async def test_notify_session_booking(session_notifier, email_credentials, telegram_credentials):
    """Test session booking notification with both email and Telegram enabled"""
    # Mock the email and Telegram notification methods
    with patch.object(session_notifier, 'send_email_notification') as mock_email, \
         patch.object(session_notifier, 'send_telegram_notification', new=MagicMock()) as mock_telegram:

        # Set up the mock for the async method
        mock_telegram.return_value = asyncio.Future()
        mock_telegram.return_value.set_result(None)

        # Call the method to test
        await session_notifier.notify_session_booking("Test session")

        # Verify both notification methods were called
        mock_email.assert_called_once_with("Session booked: Test session")
        mock_telegram.assert_called_once_with("Session booked: Test session")

@pytest.mark.asyncio
async def test_notify_session_booking_email_only(session_notifier, email_credentials):
    """Test session booking notification with only email enabled"""
    # Disable Telegram notifications
    session_notifier.enable_telegram = False

    # Mock the email notification method
    with patch.object(session_notifier, 'send_email_notification') as mock_email, \
         patch.object(session_notifier, 'send_telegram_notification') as mock_telegram:

        # Call the method to test
        await session_notifier.notify_session_booking("Test session")

        # Verify only email notification was called
        mock_email.assert_called_once_with("Session booked: Test session")
        mock_telegram.assert_not_called()

@pytest.mark.asyncio
async def test_notify_session_booking_telegram_only(session_notifier, telegram_credentials):
    """Test session booking notification with only Telegram enabled"""
    # Disable email notifications
    session_notifier.enable_email = False

    # Mock the Telegram notification method
    with patch.object(session_notifier, 'send_telegram_notification', new=MagicMock()) as mock_telegram:

        # Set up the mock for the async method
        mock_telegram.return_value = asyncio.Future()
        mock_telegram.return_value.set_result(None)

        # Call the method to test
        await session_notifier.notify_session_booking("Test session")

        # Verify only Telegram notification was called
        mock_telegram.assert_called_once_with("Session booked: Test session")

@pytest.mark.asyncio
async def test_notify_upcoming_session(session_notifier, email_credentials, telegram_credentials):
    """Test upcoming session notification with both email and Telegram enabled"""
    # Mock the email and Telegram notification methods
    with patch.object(session_notifier, 'send_email_notification') as mock_email, \
         patch.object(session_notifier, 'send_telegram_notification', new=MagicMock()) as mock_telegram:

        # Set up the mock for the async method
        mock_telegram.return_value = asyncio.Future()
        mock_telegram.return_value.set_result(None)

        # Call the method to test
        await session_notifier.notify_upcoming_session("Test session", 3)

        # Verify both notification methods were called
        mock_email.assert_called_once_with("Session available soon: Test session (in 3 days)")
        mock_telegram.assert_called_once_with("Session available soon: Test session (in 3 days)")

@pytest.mark.asyncio
async def test_notify_impossible_booking_enabled(session_notifier, email_credentials, telegram_credentials):
    """Test impossible booking notification when notifications are enabled"""
    # Set the notify_impossible attribute to True
    session_notifier.notify_impossible = True

    # Mock the email and Telegram notification methods
    with patch.object(session_notifier, 'send_email_notification') as mock_email, \
         patch.object(session_notifier, 'send_telegram_notification', new=MagicMock()) as mock_telegram:

        # Set up the mock for the async method
        mock_telegram.return_value = asyncio.Future()
        mock_telegram.return_value.set_result(None)

        # Call the method to test
        await session_notifier.notify_impossible_booking("Test session")

        # Verify both notification methods were called
        mock_email.assert_called_once_with("Failed to book session: Test session")
        mock_telegram.assert_called_once_with("Failed to book session: Test session")

@pytest.mark.asyncio
async def test_notify_impossible_booking_disabled(session_notifier, email_credentials, telegram_credentials):
    """Test impossible booking notification when notifications are disabled"""
    # Mock the email and Telegram notification methods
    with patch.object(session_notifier, 'send_email_notification') as mock_email, \
         patch.object(session_notifier, 'send_telegram_notification', new=MagicMock()) as mock_telegram:

        # Set up the mock for the async method
        mock_telegram.return_value = asyncio.Future()
        mock_telegram.return_value.set_result(None)

        # Call the method to test with notify_if_impossible=False
        await session_notifier.notify_impossible_booking("Test session", notify_if_impossible=False)

        # Verify neither notification method was called
        mock_email.assert_not_called()
        mock_telegram.assert_not_called()

@pytest.mark.asyncio
async def test_send_email_notification_success(session_notifier, email_credentials):
    """Test successful email notification"""
    # Mock the smtplib.SMTP_SSL class
    with patch('smtplib.SMTP_SSL') as mock_smtp:
        # Set up the mock to return a context manager
        mock_smtp_instance = MagicMock()
        mock_smtp.return_value.__enter__.return_value = mock_smtp_instance

        # Set up environment variable for SMTP server
        with patch.dict(os.environ, {"SMTP_SERVER": "smtp.example.com"}):
            # Call the method to test
            session_notifier.send_email_notification("Test email")

            # Verify SMTP methods were called
            mock_smtp.assert_called_once_with("smtp.example.com", 465)
            mock_smtp_instance.login.assert_called_once_with(
                email_credentials["from"],
                email_credentials["password"]
            )
            mock_smtp_instance.send_message.assert_called_once()

@pytest.mark.asyncio
async def test_send_email_notification_failure(session_notifier, email_credentials):
    """Test email notification failure"""
    # Mock the smtplib.SMTP_SSL class to raise an exception
    with patch('smtplib.SMTP_SSL', side_effect=Exception("SMTP error")):
        # Set up environment variable for SMTP server
        with patch.dict(os.environ, {"SMTP_SERVER": "smtp.example.com"}):
            # Verify the method raises an exception
            with pytest.raises(Exception):
                session_notifier.send_email_notification("Test email")

if __name__ == "__main__":
    pytest.main([__file__, "-v"])