import pytest
from flask import json

from app.models import EMAIL_TYPE, SMS_TYPE, TEMPLATE_TYPES
from app.utils import DATETIME_FORMAT
from tests import create_service_authorization_header
from tests.app.db import create_template

valid_version_params = [None, 1]


@pytest.mark.parametrize(
    "tmp_type, expected_name, expected_subject",
    [
        (SMS_TYPE, "sms Template Name", None),
        (EMAIL_TYPE, "email Template Name", "Template subject"),
    ],
)
@pytest.mark.parametrize("version", valid_version_params)
def test_get_template_by_id_returns_200(
    client, sample_service, tmp_type, expected_name, expected_subject, version
):
    template = create_template(sample_service, template_type=tmp_type)
    auth_header = create_service_authorization_header(service_id=sample_service.id)

    version_path = "/version/{}".format(version) if version else ""

    response = client.get(
        path="/v2/template/{}{}".format(template.id, version_path),
        headers=[("Content-Type", "application/json"), auth_header],
    )

    assert response.status_code == 200
    assert response.headers["Content-type"] == "application/json"

    json_response = json.loads(response.get_data(as_text=True))

    expected_response = {
        "id": "{}".format(template.id),
        "type": "{}".format(template.template_type),
        "created_at": template.created_at.strftime(DATETIME_FORMAT),
        "updated_at": None,
        "version": template.version,
        "created_by": template.created_by.email_address,
        "body": template.content,
        "subject": expected_subject,
        "name": expected_name,
        "personalisation": {},
    }

    assert json_response == expected_response


@pytest.mark.parametrize(
    "create_template_args, expected_personalisation",
    [
        (
            {
                "template_type": SMS_TYPE,
                "content": "Hello ((placeholder)) ((conditional??yes))",
            },
            {
                "placeholder": {"required": True},
                "conditional": {"required": True},
            },
        ),
        (
            {
                "template_type": EMAIL_TYPE,
                "subject": "((subject))",
                "content": "((content))",
            },
            {
                "subject": {"required": True},
                "content": {"required": True},
            },
        ),
    ],
)
@pytest.mark.parametrize("version", valid_version_params)
def test_get_template_by_id_returns_placeholders(
    client,
    sample_service,
    version,
    create_template_args,
    expected_personalisation,
):
    template = create_template(sample_service, **create_template_args)
    auth_header = create_service_authorization_header(service_id=sample_service.id)

    version_path = "/version/{}".format(version) if version else ""

    response = client.get(
        path="/v2/template/{}{}".format(template.id, version_path),
        headers=[("Content-Type", "application/json"), auth_header],
    )

    json_response = json.loads(response.get_data(as_text=True))
    assert json_response["personalisation"] == expected_personalisation


def test_get_template_with_non_existent_template_id_returns_404(
    client, fake_uuid, sample_service
):
    auth_header = create_service_authorization_header(service_id=sample_service.id)

    response = client.get(
        path="/v2/template/{}".format(fake_uuid),
        headers=[("Content-Type", "application/json"), auth_header],
    )

    assert response.status_code == 404
    assert response.headers["Content-type"] == "application/json"

    json_response = json.loads(response.get_data(as_text=True))

    assert json_response == {
        "errors": [{"error": "NoResultFound", "message": "No result found"}],
        "status_code": 404,
    }


@pytest.mark.parametrize("tmp_type", TEMPLATE_TYPES)
def test_get_template_with_non_existent_version_returns_404(
    client, sample_service, tmp_type
):
    template = create_template(sample_service, template_type=tmp_type)

    auth_header = create_service_authorization_header(service_id=sample_service.id)

    invalid_version = template.version + 1

    response = client.get(
        path="/v2/template/{}/version/{}".format(template.id, invalid_version),
        headers=[("Content-Type", "application/json"), auth_header],
    )

    assert response.status_code == 404
    assert response.headers["Content-type"] == "application/json"

    json_response = json.loads(response.get_data(as_text=True))

    assert json_response == {
        "errors": [{"error": "NoResultFound", "message": "No result found"}],
        "status_code": 404,
    }