from fastapi import FastAPI
from fastapi.testclient import TestClient

from api.endpoints import router


class StubMessageStorage:
    def __init__(self, updated=True):
        self.updated = updated
        self.calls = []

    def update_feedback_by_message_id(self, message_id, feedback, feedback_content=None):
        self.calls.append(
            {
                "message_id": message_id,
                "feedback": feedback,
                "feedback_content": feedback_content,
            }
        )
        return self.updated


def _build_client(monkeypatch, storage):
    app = FastAPI()
    app.include_router(router)
    monkeypatch.setattr("api.endpoints.get_message_storage", lambda: storage)
    return TestClient(app)


def test_feedback_endpoint_writes_like(monkeypatch):
    storage = StubMessageStorage(updated=True)
    client = _build_client(monkeypatch, storage)

    response = client.post(
        "/api/messages/feedback",
        json={"message_id": "mid-1", "feedback": "like"},
    )

    assert response.status_code == 200
    assert response.json() == {"ok": True, "message_id": "mid-1"}
    assert storage.calls[0] == {
        "message_id": "mid-1",
        "feedback": "like",
        "feedback_content": None,
    }


def test_feedback_endpoint_requires_feedback_content_for_dislike(monkeypatch):
    storage = StubMessageStorage(updated=True)
    client = _build_client(monkeypatch, storage)

    response = client.post(
        "/api/messages/feedback",
        json={"message_id": "mid-2", "feedback": "dislike"},
    )

    assert response.status_code == 422


def test_feedback_endpoint_returns_400_when_message_not_found(monkeypatch):
    storage = StubMessageStorage(updated=False)
    client = _build_client(monkeypatch, storage)

    response = client.post(
        "/api/messages/feedback",
        json={
            "message_id": "missing-mid",
            "feedback": "dislike",
            "feedback_content": "not useful",
        },
    )

    assert response.status_code == 400
    body = response.json()
    assert body["detail"]["code"] == "INVALID_REQUEST"
    assert body["detail"]["detail"]["field"] == "message_id"