import os
import unittest
from unittest.mock import AsyncMock, patch

os.environ.setdefault("DEBUG", "false")

from app.core.settings import settings
from app.services.integrations.providers import BrevoEmailProvider


class _FakeResponse:
    def __init__(self, *, status_code: int = 201, payload: dict | None = None, text: str = "") -> None:
        self.status_code = status_code
        self._payload = payload or {}
        self.text = text

    def json(self) -> dict:
        return self._payload


class BrevoEmailProviderTests(unittest.IsolatedAsyncioTestCase):
    async def test_send_email_applies_provider_config_to_payload(self):
        response = _FakeResponse(payload={"messageId": "brevo-123"}, text='{"messageId":"brevo-123"}')
        post_mock = AsyncMock(return_value=response)
        fake_client = type("FakeClient", (), {"post": post_mock})()

        with patch.object(settings, "brevo_api_key", "brevo-key"), patch.object(
            settings,
            "brevo_sender_email",
            "sender@empresa.com",
        ), patch.object(settings, "brevo_sender_name", "Orquestrador"), patch(
            "app.services.integrations.providers.httpx.AsyncClient"
        ) as client_cls:
            client_cls.return_value.__aenter__ = AsyncMock(return_value=fake_client)
            client_cls.return_value.__aexit__ = AsyncMock(return_value=None)
            provider = BrevoEmailProvider()
            result = await provider.send_email(
                to_email="destinatario@empresa.com",
                to_name="Operacoes",
                subject="Pedido criado",
                body="Pedido PED-1 criado com sucesso.",
                tags=["order.created"],
                provider_config={
                    "sender": {"email": "noreply@empresa.com", "name": "Operacoes"},
                    "reply_to": {"email": "atendimento@empresa.com", "name": "Atendimento"},
                    "cc": ["financeiro@empresa.com", {"email": "gestor@empresa.com", "name": "Gestor"}],
                    "bcc": ["auditoria@empresa.com"],
                    "tags": ["ops", "order.created"],
                    "headers": {"X-Canal": "orquestrador"},
                    "html_content": "<strong>Pedido PED-1 criado com sucesso.</strong>",
                },
            )

        payload = post_mock.await_args.kwargs["json"]
        self.assertEqual(payload["sender"], {"email": "noreply@empresa.com", "name": "Operacoes"})
        self.assertEqual(payload["replyTo"], {"email": "atendimento@empresa.com", "name": "Atendimento"})
        self.assertEqual(
            payload["cc"],
            [
                {"email": "financeiro@empresa.com"},
                {"email": "gestor@empresa.com", "name": "Gestor"},
            ],
        )
        self.assertEqual(payload["bcc"], [{"email": "auditoria@empresa.com"}])
        self.assertEqual(payload["tags"], ["order.created", "ops"])
        self.assertEqual(payload["headers"], {"X-Canal": "orquestrador"})
        self.assertEqual(payload["htmlContent"], "<strong>Pedido PED-1 criado com sucesso.</strong>")
        self.assertEqual(result["message_id"], "brevo-123")

    async def test_send_email_accepts_route_sender_without_global_sender_email(self):
        response = _FakeResponse(payload={"messageId": "brevo-456"}, text='{"messageId":"brevo-456"}')
        post_mock = AsyncMock(return_value=response)
        fake_client = type("FakeClient", (), {"post": post_mock})()

        with patch.object(settings, "brevo_api_key", "brevo-key"), patch.object(
            settings,
            "brevo_sender_email",
            "",
        ), patch.object(settings, "brevo_sender_name", "Orquestrador"), patch(
            "app.services.integrations.providers.httpx.AsyncClient"
        ) as client_cls:
            client_cls.return_value.__aenter__ = AsyncMock(return_value=fake_client)
            client_cls.return_value.__aexit__ = AsyncMock(return_value=None)
            provider = BrevoEmailProvider()
            await provider.send_email(
                to_email="destinatario@empresa.com",
                to_name=None,
                subject="Pedido criado",
                body="Pedido PED-1 criado com sucesso.",
                provider_config={
                    "sender": {"email": "noreply@empresa.com", "name": "Operacoes"},
                },
            )

        payload = post_mock.await_args.kwargs["json"]
        self.assertEqual(payload["sender"], {"email": "noreply@empresa.com", "name": "Operacoes"})


if __name__ == "__main__":
    unittest.main()