from base64 import b64encode
from datetime import datetime
from unittest import mock

import pytest
from flask import json

from app.enums import ServicePermissionType
from app.models import InboundSms
from app.notifications.receive_notifications import (
    create_inbound_sms_object,
    fetch_potential_service,
    has_inbound_sms_permissions,
    unescape_string,
)
from tests.app.db import (
    create_inbound_number,
    create_service,
    create_service_with_inbound_number,
)
from tests.conftest import set_config


def sns_post(client, data, auth=True, password="testkey"):
    headers = [
        ("Content-Type", "application/json"),
    ]

    if auth:
        auth_value = b64encode(f"notify:{password}".encode())
        headers.append(("Authorization", f"Basic {auth_value}"))

    return client.post(
        path="/notifications/sms/receive/sns", data={"Message": data}, headers=headers
    )


@pytest.mark.skip(reason="Need to implement SNS tests. Body here mostly from MMG")
def test_receive_notification_returns_received_to_sns(
    client, mocker, sample_service_full_permissions
):
    mocked = mocker.patch(
        "app.notifications.receive_notifications.tasks.send_inbound_sms_to_service.apply_async"
    )
    prom_counter_labels_mock = mocker.patch(
        "app.notifications.receive_notifications.INBOUND_SMS_COUNTER.labels"
    )
    data = {
        "originationNumber": "+12028675309",
        "destinationNumber": sample_service_full_permissions.get_inbound_number(),
        "messageKeyword": "JOIN",
        "messageBody": "EXAMPLE",
        "inboundMessageId": "cae173d2-66b9-564c-8309-21f858e9fb84",
        "previousPublishedMessageId": "wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY",
    }
    response = sns_post(client, data)

    assert response.status_code == 200
    result = json.loads(response.get_data(as_text=True))
    assert result["result"] == "success"

    prom_counter_labels_mock.assert_called_once_with("sns")
    prom_counter_labels_mock.return_value.inc.assert_called_once_with()

    inbound_sms_id = InboundSms.query.all()[0].id
    mocked.assert_called_once_with(
        [str(inbound_sms_id), str(sample_service_full_permissions.id)],
        queue="notify-internal-tasks",
    )


# TODO: figure out why creating a service first causes a db error
@pytest.mark.parametrize(
    "permissions",
    [
        [ServicePermissionType.SMS],
        [ServicePermissionType.INBOUND_SMS],
    ],
)
def test_receive_notification_from_sns_without_permissions_does_not_persist(
    client, mocker, notify_db_session, permissions
):
    mocked = mocker.patch(
        "app.notifications.receive_notifications.tasks.send_inbound_sms_to_service.apply_async"
    )
    # create_service_with_inbound_number(inbound_number='12025550104', service_permissions=permissions)
    data = {
        "ID": "1234",
        "MSISDN": "12025550104",
        "Message": "Some message to notify",
        "Trigger": "Trigger?",
        "Number": "testing",
        "Channel": "SMS",
        "DateRecieved": "2012-06-27 12:33:00",
    }
    response = sns_post(client, data)
    assert response.status_code == 200

    parsed_response = json.loads(response.get_data(as_text=True))
    assert parsed_response["result"] == "success"

    assert InboundSms.query.count() == 0
    assert mocked.called is False


@pytest.mark.skip(reason="Need to implement inbound SNS tests. Body here from MMG")
def test_receive_notification_without_permissions_does_not_create_inbound_even_with_inbound_number_set(
    client, mocker, sample_service
):
    inbound_number = create_inbound_number(
        "1", service_id=sample_service.id, active=True
    )

    mocked_send_inbound_sms = mocker.patch(
        "app.notifications.receive_notifications.tasks.send_inbound_sms_to_service.apply_async"
    )
    mocked_has_permissions = mocker.patch(
        "app.notifications.receive_notifications.has_inbound_sms_permissions",
        return_value=False,
    )

    data = {
        "ID": "1234",
        "MSISDN": "447700900855",
        "Message": "Some message to notify",
        "Trigger": "Trigger?",
        "Number": inbound_number.number,
        "Channel": "SMS",
        "DateRecieved": "2012-06-27 12:33:00",
    }

    response = sns_post(client, data)

    assert response.status_code == 200
    assert len(InboundSms.query.all()) == 0
    assert mocked_has_permissions.called
    mocked_send_inbound_sms.assert_not_called()


@pytest.mark.parametrize(
    "permissions,expected_response",
    [
        ([ServicePermissionType.SMS, ServicePermissionType.INBOUND_SMS], True),
        ([ServicePermissionType.INBOUND_SMS], False),
        ([ServicePermissionType.SMS], False),
    ],
)
def test_check_permissions_for_inbound_sms(
    notify_db_session, permissions, expected_response
):
    service = create_service(service_permissions=permissions)
    assert has_inbound_sms_permissions(service.permissions) is expected_response


@pytest.mark.parametrize(
    "raw, expected",
    [
        (
            "😬",
            "😬",
        ),
        (
            "1\\n2",
            "1\n2",
        ),
        (
            "\\'\"\\'",
            "'\"'",
        ),
        (
            """

        """,
            """

        """,
        ),
        (
            "\x79 \\x79 \\\\x79",  # we should never see the middle one
            "y y \\x79",
        ),
    ],
)
def test_unescape_string(raw, expected):
    assert unescape_string(raw) == expected


@pytest.mark.skip(reason="Need to implement inbound SNS tests. Body here from MMG")
def test_create_inbound_sns_sms_object(sample_service_full_permissions):
    data = {
        "Message": "hello+there+%F0%9F%93%A9",
        "Number": sample_service_full_permissions.get_inbound_number(),
        "MSISDN": "07700 900 001",
        "DateRecieved": "2017-01-02+03%3A04%3A05",
        "ID": "bar",
    }

    inbound_sms = create_inbound_sms_object(
        sample_service_full_permissions,
        data["Message"],
        data["MSISDN"],
        data["ID"],
        data["DateRecieved"],
        "sns",
    )

    assert inbound_sms.service_id == sample_service_full_permissions.id
    assert (
        inbound_sms.notify_number
        == sample_service_full_permissions.get_inbound_number()
    )
    assert inbound_sms.user_number == "447700900001"
    assert inbound_sms.provider_date == datetime(2017, 1, 2, 3, 4, 5)
    assert inbound_sms.provider_reference == "bar"
    assert inbound_sms._content != "hello there 📩"
    assert inbound_sms.content == "hello there 📩"
    assert inbound_sms.provider == "sns"


@pytest.mark.skip(reason="Need to implement inbound SNS tests. Body here from MMG")
def test_create_inbound_sns_sms_object_uses_inbound_number_if_set(
    sample_service_full_permissions,
):
    sample_service_full_permissions.sms_sender = "foo"
    inbound_number = sample_service_full_permissions.get_inbound_number()

    data = {
        "Message": "hello+there+%F0%9F%93%A9",
        "Number": sample_service_full_permissions.get_inbound_number(),
        "MSISDN": "07700 900 001",
        "DateRecieved": "2017-01-02+03%3A04%3A05",
        "ID": "bar",
    }

    inbound_sms = create_inbound_sms_object(
        sample_service_full_permissions,
        data["Message"],
        data["MSISDN"],
        data["ID"],
        data["DateRecieved"],
        "sns",
    )

    assert inbound_sms.service_id == sample_service_full_permissions.id
    assert inbound_sms.notify_number == inbound_number


@pytest.mark.skip(reason="Need to implement inbound SNS tests. Body here from MMG")
@pytest.mark.parametrize(
    "notify_number",
    ["foo", "baz"],
    ids=["two_matching_services", "no_matching_services"],
)
def test_receive_notification_error_if_not_single_matching_service(
    client, notify_db_session, notify_number
):
    create_service_with_inbound_number(
        inbound_number="dog",
        service_name="a",
        service_permissions=[
            ServicePermissionType.EMAIL,
            ServicePermissionType.SMS,
            ServicePermissionType.INBOUND_SMS,
        ],
    )
    create_service_with_inbound_number(
        inbound_number="bar",
        service_name="b",
        service_permissions=[
            ServicePermissionType.EMAIL,
            ServicePermissionType.SMS,
            ServicePermissionType.INBOUND_SMS,
        ],
    )

    data = {
        "Message": "hello",
        "Number": notify_number,
        "MSISDN": "7700900001",
        "DateRecieved": "2017-01-02 03:04:05",
        "ID": "bar",
    }
    response = sns_post(client, data)

    # we still return 'RECEIVED' to MMG
    assert response.status_code == 200
    assert response.get_data(as_text=True) == "RECEIVED"
    assert InboundSms.query.count() == 0


@pytest.mark.skip(reason="Need to implement inbound SNS tests. Body here from MMG")
@pytest.mark.parametrize(
    "auth, keys, status_code",
    [
        ["testkey", ["testkey"], 200],
        ["", ["testkey"], 401],
        ["wrong", ["testkey"], 403],
        ["testkey1", ["testkey1", "testkey2"], 200],
        ["testkey2", ["testkey1", "testkey2"], 200],
        ["wrong", ["testkey1", "testkey2"], 403],
        ["", [], 401],
        ["testkey", [], 403],
    ],
)
def test_sns_inbound_sms_auth(
    notify_db_session, notify_api, client, mocker, auth, keys, status_code
):
    mocker.patch(
        "app.notifications.receive_notifications.tasks.send_inbound_sms_to_service.apply_async"
    )

    create_service_with_inbound_number(
        service_name="b",
        inbound_number="07111111111",
        service_permissions=[
            ServicePermissionType.EMAIL,
            ServicePermissionType.SMS,
            ServicePermissionType.INBOUND_SMS,
        ],
    )

    data = {
        "ID": "1234",
        "MSISDN": "07111111111",
        "Message": "Some message to notify",
        "Trigger": "Trigger?",
        "Number": "testing",
        "Channel": "SMS",
        "DateRecieved": "2012-06-27 12:33:00",
    }

    with set_config(notify_api, "MMG_INBOUND_SMS_AUTH", keys):
        response = sns_post(client, data, auth=bool(auth), password=auth)
        assert response.status_code == status_code


def test_create_inbound_sms_object_works_with_alphanumeric_sender(
    sample_service_full_permissions,
):
    data = {
        "Message": "hello",
        "Number": sample_service_full_permissions.get_inbound_number(),
        "MSISDN": "ALPHANUM3R1C",
        "DateRecieved": "2017-01-02+03%3A04%3A05",
        "ID": "bar",
    }

    inbound_sms = create_inbound_sms_object(
        service=sample_service_full_permissions,
        content=data["Message"],
        from_number="ALPHANUM3R1C",
        provider_ref="foo",
        date_received=None,
        provider_name="mmg",
    )

    assert inbound_sms.user_number == "ALPHANUM3R1C"


@mock.patch(
    "app.notifications.receive_notifications.dao_fetch_service_by_inbound_number"
)
def test_fetch_potential_service_cant_find_it(mock_dao):
    mock_dao.return_value = None
    found_service = fetch_potential_service(234, "sns")
    assert found_service is False

    # Permissions will not be set so it will still return false
    mock_dao.return_value = create_service()
    found_service = fetch_potential_service(234, "sns")
    assert found_service is False