"""
Tests for email functionality.
"""
import pytest
from unittest.mock import patch, MagicMock
from flask_mail import Message
from app import send_resume_email


class TestEmailSending:
    """Tests for email sending functionality."""

    def test_send_resume_email_success(self, app):
        """Test successfully sending a resume email."""
        with patch('app.mail.send') as mock_send:
            result = send_resume_email('test@example.com', 'test-session-123', 'Software Developer')

            assert result is True
            assert mock_send.called

    def test_send_resume_email_failure(self, app):
        """Test handling email sending failure."""
        with patch('app.mail.send') as mock_send:
            mock_send.side_effect = Exception('SMTP error')

            result = send_resume_email('test@example.com', 'test-session-123', 'Test Job')

            assert result is False

    def test_resume_email_content(self, app):
        """Test that resume email contains correct content."""
        with patch('app.mail.send') as mock_send:
            send_resume_email('applicant@example.com', 'abc-123', 'Marketing Manager')

            # Get the Message object that was passed to send()
            assert mock_send.called
            call_args = mock_send.call_args
            message = call_args[0][0] if call_args[0] else None

            if message:
                assert isinstance(message, Message)
                assert 'applicant@example.com' in message.recipients
                assert 'Bewerbung' in message.subject or 'Marketing Manager' in message.subject

    def test_resume_link_in_email(self, app):
        """Test that resume link is included in email body."""
        with patch('app.mail.send') as mock_send:
            send_resume_email('test@example.com', 'session-xyz', 'Test Position')

            if mock_send.called:
                call_args = mock_send.call_args
                message = call_args[0][0] if call_args[0] else None

                if message and hasattr(message, 'body'):
                    assert 'session-xyz' in message.body or '/resume/' in message.body


class TestEmailIntegration:
    """Tests for email integration with application workflow."""

    def test_email_sent_on_initial_submission(self, client, app):
        """Test that email is sent when user submits their email address."""
        with patch('app.mail.send') as mock_send:
            response = client.post('/apply/submit-email', data={
                'email': 'newuser@example.com',
                'job_name': 'Junior Developer'
            }, follow_redirects=True)

            assert response.status_code == 200
            # Email should be sent
            assert mock_send.called or app.config.get('MAIL_SUPPRESS_SEND') is True

    def test_email_suppressed_in_testing(self, app):
        """Test that email is suppressed during testing."""
        assert app.config['TESTING'] is True
        assert app.config.get('MAIL_SUPPRESS_SEND') is True


class TestEmailConfiguration:
    """Tests for email configuration."""

    def test_email_config_exists(self, app):
        """Test that email configuration is set."""
        assert 'MAIL_SERVER' in app.config
        assert 'MAIL_PORT' in app.config
        assert 'MAIL_USE_TLS' in app.config

    def test_mail_suppress_send_in_testing(self, app):
        """Test that email sending is suppressed in test mode."""
        assert app.config['TESTING'] is True
        assert app.config['MAIL_SUPPRESS_SEND'] is True