import pytest

from io import BytesIO
from flask import url_for
from unittest.mock import ANY

template_types = ['email', 'sms']


@pytest.mark.parametrize("template_type", template_types)
def test_choose_template(
    template_type,
    app_,
    api_user_active,
    mock_login,
    mock_get_user,
    mock_get_service,
    mock_check_verify_code,
    mock_get_service_templates,
    mock_get_jobs,
    mock_has_permissions
):
    with app_.test_request_context():
        with app_.test_client() as client:
            client.login(api_user_active)
            response = client.get(url_for('main.choose_template', template_type=template_type, service_id=12345))

        assert response.status_code == 200
        content = response.get_data(as_text=True)
        assert '{}_template_one'.format(template_type) in content
        assert '{} template one content'.format(template_type) in content
        assert '{}_template_two'.format(template_type) in content
        assert '{} template two content'.format(template_type) in content


def test_upload_empty_csvfile_returns_to_upload_page(
    app_,
    api_user_active,
    mock_login,
    mock_get_user,
    mock_get_service,
    mock_get_service_templates,
    mock_check_verify_code,
    mock_get_service_template,
    mock_has_permissions
):
    with app_.test_request_context():
        with app_.test_client() as client:
            client.login(api_user_active)
            upload_data = {'file': (BytesIO(''.encode('utf-8')), 'emtpy.csv')}
            response = client.post(
                url_for('main.send_messages', service_id=12345, template_id=54321),
                data=upload_data,
                follow_redirects=True
            )

        assert response.status_code == 200
        content = response.get_data(as_text=True)
        assert 'The file emtpy.csv contained no data' in content


def test_upload_csvfile_with_invalid_phone_shows_check_page_with_errors(
    app_,
    api_user_active,
    mocker,
    mock_login,
    mock_get_service,
    mock_get_service_template,
    mock_s3_upload,
    mock_has_permissions
):

    contents = 'phone number,name\n+44 123,test1\n+44 456,test2'
    file_data = (BytesIO(contents.encode('utf-8')), 'invalid.csv')
    mocker.patch('app.main.views.send.s3download', return_value=contents)

    with app_.test_request_context():
        with app_.test_client() as client:
            client.login(api_user_active)
            upload_data = {'file': file_data}
            response = client.post(
                url_for('main.send_messages', service_id=12345, template_id=54321),
                data=upload_data,
                follow_redirects=True
            )
        assert response.status_code == 200
        content = response.get_data(as_text=True)
        assert 'Your CSV file contained missing or invalid data' in content
        assert '+44 123' in content
        assert '+44 456' in content
        assert 'Upload a CSV file' in content


def test_upload_csvfile_removes_empty_lines_and_trailing_commas(
    app_,
    api_user_active,
    mocker,
    mock_login,
    mock_get_service,
    mock_get_service_template,
    mock_s3_upload,
    mock_has_permissions
):

    contents = 'phone number,name,,,\n++44 7700 900981,test1,,,\n+44 7700 900981,test2,,,\n ,,, \n ,,, \t \t \n'
    file_data = (BytesIO(contents.encode('utf-8')), 'invalid.csv')

    expected_data = {'data': ['phone number,name', '++44 7700 900981,test1', '+44 7700 900981,test2'],
                     'file_name': 'invalid.csv'}

    mocker.patch('app.main.views.send.s3download',
                 return_value='phone number,name\n++44 7700 900981,test1\n+44 7700 900981,test2')

    with app_.test_request_context():
        with app_.test_client() as client:
            client.login(api_user_active)
            upload_data = {'file': file_data}
            response = client.post(
                url_for('main.send_messages', service_id=12345, template_id=54321),
                data=upload_data,
                follow_redirects=True
            )
        assert response.status_code == 200
        mock_s3_upload.assert_called_with(ANY, '12345', expected_data, 'eu-west-1')


def test_send_test_message_to_self(
    app_,
    mocker,
    api_user_active,
    mock_login,
    mock_get_service,
    mock_get_service_template,
    mock_s3_upload,
    mock_has_permissions
):

    expected_data = {'data': ['phone number', '+4412341234'], 'file_name': 'Test run'}
    mocker.patch('app.main.views.send.s3download', return_value='phone number\r\n+4412341234')

    with app_.test_request_context():
        with app_.test_client() as client:
            client.login(api_user_active)
            response = client.get(
                url_for('main.send_message_to_self', service_id=12345, template_id=54321),
                follow_redirects=True
            )
        assert response.status_code == 200
        mock_s3_upload.assert_called_with(ANY, '12345', expected_data, 'eu-west-1')


def test_send_test_message_to_self(
    app_,
    mocker,
    api_user_active,
    mock_login,
    mock_get_service,
    mock_get_service_email_template,
    mock_s3_upload,
    mock_has_permissions
):

    expected_data = {'data': ['email address', 'test@user.gov.uk'], 'file_name': 'Test run'}
    mocker.patch('app.main.views.send.s3download', return_value='email address\r\ntest@user.gov.uk')

    with app_.test_request_context():
        with app_.test_client() as client:
            client.login(api_user_active)
            response = client.get(
                url_for('main.send_message_to_self', service_id=12345, template_id=54321),
                follow_redirects=True
            )
        assert response.status_code == 200
        mock_s3_upload.assert_called_with(ANY, '12345', expected_data, 'eu-west-1')


def test_download_example_csv(
    app_,
    mocker,
    api_user_active,
    mock_login,
    mock_get_service,
    mock_get_service_template,
    mock_has_permissions
):

    with app_.test_request_context():
        with app_.test_client() as client:
            client.login(api_user_active)
            response = client.get(
                url_for('main.get_example_csv', service_id=12345, template_id=54321),
                follow_redirects=True
            )
        assert response.status_code == 200
        assert response.get_data(as_text=True) == 'phone number\r\n+4412341234\r\n'
        assert 'text/csv' in response.headers['Content-Type']


def test_upload_csvfile_with_valid_phone_shows_all_numbers(
    app_,
    mocker,
    api_user_active,
    mock_login,
    mock_get_service,
    mock_get_service_template,
    mock_s3_upload,
    mock_has_permissions
):

    contents = 'phone number\n+44 7700 900981\n+44 7700 900982\n+44 7700 900983\n+44 7700 900984\n+44 7700 900985\n+44 7700 900986'  # noqa
    file_data = (BytesIO(contents.encode('utf-8')), 'valid.csv')
    mocker.patch('app.main.views.send.s3download', return_value=contents)

    with app_.test_request_context():
        with app_.test_client() as client:
            client.login(api_user_active)
            upload_data = {'file': file_data}
            response = client.post(url_for('main.send_messages', service_id=12345, template_id=54321),
                                   data=upload_data,
                                   follow_redirects=True)
            with client.session_transaction() as sess:
                assert int(sess['upload_data']['template_id']) == 54321
                assert sess['upload_data']['original_file_name'] == 'valid.csv'
                assert sess['upload_data']['notification_count'] == 6

            content = response.get_data(as_text=True)

            assert response.status_code == 200
            assert '+44 7700 900981' in content
            assert '+44 7700 900982' in content
            assert '+44 7700 900983' in content
            assert '+44 7700 900984' in content
            assert '+44 7700 900985' in content
            assert '+44 7700 900986' in content


def test_create_job_should_call_api(
    app_,
    service_one,
    api_user_active,
    mock_login,
    job_data,
    mock_create_job,
    mock_get_job,
    mock_get_notifications,
    mock_get_service,
    mock_get_service_template,
    mock_has_permissions
):

    service_id = service_one['id']
    job_id = job_data['id']
    original_file_name = job_data['original_file_name']
    template_id = job_data['template']
    notification_count = job_data['notification_count']

    with app_.test_request_context():
        with app_.test_client() as client:
            client.login(api_user_active)
            with client.session_transaction() as session:
                session['upload_data'] = {'original_file_name': original_file_name,
                                          'template_id': template_id,
                                          'notification_count': notification_count}
            url = url_for('main.check_messages', service_id=service_one['id'], upload_id=job_id)
            response = client.post(url, data=job_data, follow_redirects=True)

        assert response.status_code == 200
        assert 'We’ve started sending your messages' in response.get_data(as_text=True)
        mock_create_job.assert_called_with(job_id, service_id, template_id, original_file_name, notification_count)