"""
Tests for the FormDefinition creation endpoint.

Endpoint: POST /wp-json/reservations/v1/form-definition
Body:     { "name": str, "definition": object }

Run:
    pytest tests/Forms/test_form_definition.py -v

Override the WordPress base URL:
    WP_BASE_URL=http://mysite.local pytest tests/Forms/test_form_definition.py -v
"""

import os
import requests

BASE_URL = os.environ.get("WP_BASE_URL", "http://localhost/wordpress")
ENDPOINT = f"{BASE_URL}/wp-json/reservations/v1/form-definition"

VALID_DEFINITION = {
    "email_key": "email",
    "elements": [
        {"type": "text", "name": "name", "label": "Your name", "required": False},
        {"type": "text", "name": "email", "label": "Your email", "required": True},
    ]
}


def post_definition(payload: dict) -> requests.Response:
    return requests.post(ENDPOINT, json=payload)


class TestFormDefinitionCreation:
    def test_can_create_form_definition(self):
        r = post_definition({"name": "Contact form", "definition": VALID_DEFINITION})
        assert r.status_code == 201
        body = r.json()
        assert "id" in body
        assert isinstance(body["id"], int)
        assert body["id"] > 0

    def test_response_content_type_is_json(self):
        r = post_definition({"name": "Contact form", "definition": VALID_DEFINITION})
        assert r.headers["Content-Type"].startswith("application/json")

    def test_each_creation_returns_a_new_id(self):
        r1 = post_definition({"name": "Form A", "definition": VALID_DEFINITION})
        r2 = post_definition({"name": "Form B", "definition": VALID_DEFINITION})
        assert r1.status_code == 201
        assert r2.status_code == 201
        assert r1.json()["id"] != r2.json()["id"]


class TestFormDefinitionValidation:
    def test_missing_name_returns_400(self):
        r = post_definition({"definition": VALID_DEFINITION})
        assert r.status_code == 400

    def test_empty_name_returns_400(self):
        r = post_definition({"name": "", "definition": VALID_DEFINITION})
        assert r.status_code == 400

    def test_missing_definition_returns_400(self):
        r = post_definition({"name": "Contact form"})
        assert r.status_code == 400

    def test_definition_must_be_object_not_string(self):
        r = post_definition({"name": "Contact form", "definition": "not-an-object"})
        assert r.status_code == 400

    def test_missing_both_fields_returns_400(self):
        r = post_definition({})
        assert r.status_code == 400

    def test_definition_with_no_elements_is_accepted(self):
        r = post_definition({"name": "Empty form", "definition": {}})
        assert r.status_code == 201

    def test_definition_with_empty_elements_list_is_accepted(self):
        r = post_definition({"name": "Empty elements form", "definition": {"elements": []}})
        assert r.status_code == 201