import pytest
from flask import url_for
from unittest.mock import patch
from app.models import User, Folder, ProcessedEmail, db
from app import create_app
from app.imap_service import IMAPService


class TestProcessedEmailsRoutes:
    def test_get_pending_emails_success(self, app, mock_user, authenticated_client):
        """Test get_pending_emails endpoint successfully."""
        with app.app_context():
            # Create a folder
            folder = Folder(
                user_id=mock_user.id,
                name='Test Folder',
                rule_text='Test rule'
            )
            db.session.add(folder)
            db.session.commit()
            
            # Create some pending email records
            pending_emails = [
                ProcessedEmail(
                    user_id=mock_user.id,
                    folder_id=folder.id,
                    folder_name='Test Folder',
                    email_uid='123',
                    is_processed=False
                ),
                ProcessedEmail(
                    user_id=mock_user.id,
                    folder_id=folder.id,
                    folder_name='Test Folder',
                    email_uid='456',
                    is_processed=False
                )
            ]
            db.session.bulk_save_objects(pending_emails)
            db.session.commit()
            
            # Mock IMAP service to return email headers
            with patch('app.routes.IMAPService') as mock_imap_service:
                mock_imap_instance = mock_imap_service.return_value
                mock_imap_instance.get_email_headers.side_effect = [
                    {
                        'subject': 'Test Subject 1',
                        'date': '2023-01-01T12:00:00',
                        'from': 'sender1@example.com',
                        'to': 'recipient@example.com',
                        'message_id': '<msg1@example.com>'
                    },
                    {
                        'subject': 'Test Subject 2',
                        'date': '2023-01-02T12:00:00',
                        'from': 'sender2@example.com',
                        'to': 'recipient@example.com',
                        'message_id': '<msg2@example.com>'
                    }
                ]
                
                response = authenticated_client.get(f'/api/folders/{folder.id}/pending-emails')
                
                assert response.status_code == 200
                # The response should be HTML with the pending emails dialog
                assert 'Test Subject 1' in response.get_data(as_text=True)
                assert 'Test Subject 2' in response.get_data(as_text=True)
    
    def test_get_pending_emails_folder_not_found(self, app, mock_user, authenticated_client):
        """Test get_pending_emails endpoint with non-existent folder."""
        with app.app_context():
            response = authenticated_client.get('/api/folders/999/pending-emails')
            
            assert response.status_code == 404
            assert 'Folder not found' in response.get_json()['error']
    
    def test_mark_email_processed_success(self, app, mock_user, authenticated_client):
        """Test mark_email_processed endpoint successfully."""
        with app.app_context():
            # Create a folder
            folder = Folder(
                user_id=mock_user.id,
                name='Test Folder',
                rule_text='Test rule'
            )
            db.session.add(folder)
            db.session.commit()
            
            # Create a pending email record
            pending_email = ProcessedEmail(
                user_id=mock_user.id,
                folder_id=folder.id,
                folder_name='Test Folder',
                email_uid='123',
                is_processed=False
            )
            db.session.add(pending_email)
            db.session.commit()
            
            response = authenticated_client.post(f'/api/folders/{folder.id}/emails/123/process')
            
            assert response.status_code == 200
            # The response should be HTML with the updated dialog
            assert 'has been marked as processed successfully' in response.get_data(as_text=True)
            
            # Verify the email is marked as processed
            updated_email = ProcessedEmail.query.filter_by(
                user_id=mock_user.id,
                folder_name='Test Folder',
                email_uid='123'
            ).first()
            assert updated_email.is_processed is True
    
    def test_mark_email_processed_folder_not_found(self, app, mock_user, authenticated_client):
        """Test mark_email_processed endpoint with non-existent folder."""
        with app.app_context():
            # Login and make request
            login_response = response = authenticated_client.post('/api/folders/999/emails/123/process')
            
            assert response.status_code == 404
            assert 'Folder not found' in response.get_json()['error']
    
    def test_sync_folder_emails_success(self, app, mock_user, authenticated_client):
        """Test sync_folder_emails endpoint successfully."""
        with app.app_context():
            # Create a folder
            folder = Folder(
                user_id=mock_user.id,
                name='Test Folder',
                rule_text='Test rule'
            )
            db.session.add(folder)
            db.session.commit()
            
            # Mock IMAP service to return email UIDs
            with patch('app.routes.IMAPService') as mock_imap_service:
                mock_imap_instance = mock_imap_service.return_value
                mock_imap_instance.get_folder_email_uids.return_value = ['123', '456', '789']
                
                # Login and make request
                response = authenticated_client.post(f'/api/folders/{folder.id}/sync-emails')
                
                assert response.status_code == 200
                data = response.get_json()
                assert data['success'] is True
                assert 'Synced 3 new emails' in data['message']
                assert data['pending_count'] == 3
                assert data['total_count'] == 3
                
                # Verify records were created
                records = ProcessedEmail.query.filter_by(
                    user_id=mock_user.id,
                    folder_name='Test Folder'
                ).all()
                assert len(records) == 3
    
    def test_sync_folder_emails_no_emails(self, app, mock_user, authenticated_client):
        """Test sync_folder_emails endpoint with no emails found."""
        with app.app_context():
            # Create a folder
            folder = Folder(
                user_id=mock_user.id,
                name='Test Folder',
                rule_text='Test rule'
            )
            db.session.add(folder)
            db.session.commit()
            
            # Mock IMAP service to return no email UIDs
            with patch('app.routes.IMAPService') as mock_imap_service:
                mock_imap_instance = mock_imap_service.return_value
                mock_imap_instance.get_folder_email_uids.return_value = []
                
                # Login and make request
                response = authenticated_client.post(f'/api/folders/{folder.id}/sync-emails')
                
                assert response.status_code == 404
                assert 'No emails found in folder' in response.get_json()['error']
    
    def test_sync_folder_emails_folder_not_found(self, app, mock_user, authenticated_client):
        """Test sync_folder_emails endpoint with non-existent folder."""
        with app.app_context():
            # Login and make request
            login_response = response = authenticated_client.post('/api/folders/999/sync-emails')
            
            assert response.status_code == 404
            assert 'Folder not found' in response.get_json()['error']
    
    def test_process_folder_emails_success(self, app, mock_user, authenticated_client):
        """Test process_folder_emails endpoint successfully."""
        with app.app_context():
            # Create a folder
            folder = Folder(
                user_id=mock_user.id,
                name='Test Folder',
                rule_text='Test rule'
            )
            db.session.add(folder)
            db.session.commit()
            
            # Create some pending email records
            pending_emails = [
                ProcessedEmail(
                    user_id=mock_user.id,
                    folder_id=folder.id,
                    folder_name='Test Folder',
                    email_uid='123',
                    is_processed=False
                ),
                ProcessedEmail(
                    user_id=mock_user.id,
                    folder_id=folder.id,
                    folder_name='Test Folder',
                    email_uid='456',
                    is_processed=False
                )
            ]
            db.session.bulk_save_objects(pending_emails)
            db.session.commit()
            
            # Login and make request
            login_response = response = authenticated_client.post(f'/api/folders/{folder.id}/process-emails', data={
                'email_uids': ['123', '456']
            })
            
            assert response.status_code == 200
            data = response.get_json()
            assert data['success'] is True
            assert 'Processed 2 emails' in data['message']
            assert data['pending_count'] == 0
            
            # Verify emails are marked as processed
            processed_emails = ProcessedEmail.query.filter_by(
                user_id=mock_user.id,
                folder_name='Test Folder',
                is_processed=True
            ).all()
            assert len(processed_emails) == 2
    
    def test_process_folder_emails_no_uids(self, app, mock_user, authenticated_client):
        """Test process_folder_emails endpoint with no email UIDs provided."""
        with app.app_context():
            # Create a folder
            folder = Folder(
                user_id=mock_user.id,
                name='Test Folder',
                rule_text='Test rule'
            )
            db.session.add(folder)
            db.session.commit()
            
            # Login and make request
            login_response = response = authenticated_client.post(f'/api/folders/{folder.id}/process-emails', data={})
            
            assert response.status_code == 400
            assert 'No email UIDs provided' in response.get_json()['error']
    
    def test_process_folder_emails_folder_not_found(self, app, mock_user, authenticated_client):
        """Test process_folder_emails endpoint with non-existent folder."""
        with app.app_context():
            # Login and make request
            login_response = response = authenticated_client.post('/api/folders/999/process-emails', data={
                'email_uids': ['123', '456']
            })
            
            assert response.status_code == 404
            assert 'Folder not found' in response.get_json()['error']