import pytest
from flask import json

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

valid_personalisation = {"personalisation": {"Name": "Jo"}}

valid_post = [
    (
        "Some subject",
        "Some content",
        None,
        "Some subject",
        "Some content",
        (
            '<p style="Margin: 0 0 20px 0; font-size: 19px; line-height: 25px; color: #0B0C0C;">'
            "Some content"
            "</p>"
        ),
    ),
    (
        "Some subject",
        "Dear ((Name)), Hello. Yours Truly, The Government.",
        valid_personalisation,
        "Some subject",
        "Dear Jo, Hello. Yours Truly, The Government.",
        (
            '<p style="Margin: 0 0 20px 0; font-size: 19px; line-height: 25px; color: #0B0C0C;">'
            "Dear Jo, Hello. Yours Truly, The Government."
            "</p>"
        ),
    ),
    (
        "Message for ((Name))",
        "Dear ((Name)), Hello. Yours Truly, The Government.",
        valid_personalisation,
        "Message for Jo",
        "Dear Jo, Hello. Yours Truly, The Government.",
        (
            '<p style="Margin: 0 0 20px 0; font-size: 19px; line-height: 25px; color: #0B0C0C;">'
            "Dear Jo, Hello. Yours Truly, The Government."
            "</p>"
        ),
    ),
    (
        "Message for ((Name))",
        "Some content",
        valid_personalisation,
        "Message for Jo",
        "Some content",
        (
            '<p style="Margin: 0 0 20px 0; font-size: 19px; line-height: 25px; color: #0B0C0C;">'
            "Some content"
            "</p>"
        ),
    ),
]


@pytest.mark.parametrize("tmp_type", TEMPLATE_TYPES)
@pytest.mark.parametrize(
    "subject,content,post_data,expected_subject,expected_content,expected_html",
    valid_post,
)
def test_valid_post_template_returns_200(
    client,
    sample_service,
    tmp_type,
    subject,
    content,
    post_data,
    expected_subject,
    expected_content,
    expected_html,
):
    template = create_template(
        sample_service, template_type=tmp_type, subject=subject, content=content
    )

    auth_header = create_service_authorization_header(service_id=sample_service.id)

    response = client.post(
        path="/v2/template/{}/preview".format(template.id),
        data=json.dumps(post_data),
        headers=[("Content-Type", "application/json"), auth_header],
    )

    assert response.status_code == 200

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

    assert resp_json["id"] == str(template.id)

    if tmp_type == EMAIL_TYPE:
        assert expected_subject in resp_json["subject"]
        assert resp_json["html"] == expected_html
    else:
        assert resp_json["html"] is None

    assert expected_content in resp_json["body"]


def test_email_templates_not_rendered_into_content(client, sample_service):
    template = create_template(
        sample_service,
        template_type=EMAIL_TYPE,
        subject="Test",
        content=("Hello\n" "\r\n" "\r\n" "\n" "# This is a heading\n" "\n" "Paragraph"),
    )

    auth_header = create_service_authorization_header(service_id=sample_service.id)

    response = client.post(
        path="/v2/template/{}/preview".format(template.id),
        data=json.dumps(None),
        headers=[("Content-Type", "application/json"), auth_header],
    )

    assert response.status_code == 200

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

    assert resp_json["body"] == template.content


@pytest.mark.parametrize("tmp_type", TEMPLATE_TYPES)
def test_invalid_post_template_returns_400(client, sample_service, tmp_type):
    template = create_template(
        sample_service,
        template_type=tmp_type,
        content="Dear ((Name)), Hello ((Missing)). Yours Truly, The Government.",
    )

    auth_header = create_service_authorization_header(service_id=sample_service.id)

    response = client.post(
        path="/v2/template/{}/preview".format(template.id),
        data=json.dumps(valid_personalisation),
        headers=[("Content-Type", "application/json"), auth_header],
    )

    assert response.status_code == 400

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

    assert resp_json["errors"][0]["error"] == "BadRequestError"
    assert "Missing personalisation: Missing" in resp_json["errors"][0]["message"]


def test_post_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.post(
        path="/v2/template/{}/preview".format(fake_uuid),
        data=json.dumps(valid_personalisation),
        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,
    }


def test_post_template_returns_200_without_personalisation(client, sample_template):
    response = client.post(
        path="/v2/template/{}/preview".format(sample_template.id),
        data=None,
        headers=[
            ("Content-Type", "application/json"),
            create_service_authorization_header(service_id=sample_template.service_id),
        ],
    )
    assert response.status_code == 200


def test_post_template_returns_200_without_personalisation_and_missing_content_header(
    client, sample_template
):
    response = client.post(
        path="/v2/template/{}/preview".format(sample_template.id),
        data=None,
        headers=[
            create_service_authorization_header(service_id=sample_template.service_id)
        ],
    )
    assert response.status_code == 200


def test_post_template_returns_200_without_personalisation_as_valid_json_and_missing_content_header(
    client, sample_template
):
    response = client.post(
        path="/v2/template/{}/preview".format(sample_template.id),
        data=json.dumps(None),
        headers=[
            create_service_authorization_header(service_id=sample_template.service_id)
        ],
    )
    assert response.status_code == 200


def test_post_template_returns_200_with_valid_json_and_missing_content_header(
    client, sample_template
):
    response = client.post(
        path="/v2/template/{}/preview".format(sample_template.id),
        data=json.dumps(valid_personalisation),
        headers=[
            create_service_authorization_header(service_id=sample_template.service_id)
        ],
    )
    assert response.status_code == 200