import asyncio
from types import SimpleNamespace
from pathlib import Path
import sys

sys.path.insert(0, str(Path(__file__).resolve().parents[1]))

from app.services.tryout_json_import import preview_tryout_json_import


class DummyScalarResult:
    def __init__(self, value):
        self._value = value

    def scalar_one_or_none(self):
        return self._value


class DummyScalars:
    def __init__(self, values):
        self._values = values

    def all(self):
        return self._values


class DummyListResult:
    def __init__(self, values):
        self._values = values

    def scalars(self):
        return DummyScalars(self._values)


class DummySession:
    def __init__(self, responses):
        self._responses = list(responses)

    async def execute(self, _query):
        return self._responses.pop(0)


def test_preview_tryout_json_import_classifies_new_updated_and_removed_questions():
    payload = {
        "export_info": {
            "exported_at": "2026-04-02 09:12:59",
            "exported_by": "Admin",
            "tryout_id": 1038,
        },
        "tryouts": {
            "tryout_1038": {
                "info": {
                    "id": 1038,
                    "title": "Tryout PPDS Obgyn",
                    "permalink": "https://member.example.com/tryout/1038",
                },
                "questions": [
                    {
                        "id": 269,
                        "title": "Question A",
                        "question": "<p>Question A body</p>",
                        "options": [
                            {"increment": "A", "label": "", "value": "0"},
                            {"increment": "B", "label": "", "value": "1"},
                        ],
                        "answer": "B",
                        "explanation": "<p>Because.</p>",
                    },
                    {
                        "id": 270,
                        "title": "Question B new",
                        "question": "<p>Question B body</p>",
                        "options": [
                            {"increment": "A", "label": "", "value": "1"},
                            {"increment": "B", "label": "", "value": "0"},
                        ],
                        "answer": "A",
                        "explanation": "<p>New item.</p>",
                    },
                ],
                "results": [],
            }
        },
    }

    existing_question = SimpleNamespace(
        source_question_id="269",
        content_checksum="old-checksum",
        is_active=True,
    )
    removed_question = SimpleNamespace(
        source_question_id="999",
        content_checksum="removed-checksum",
        is_active=True,
    )
    db = DummySession(
        [
            DummyScalarResult(SimpleNamespace(id=1)),
            DummyListResult([existing_question, removed_question]),
        ]
    )

    preview = asyncio.run(preview_tryout_json_import(payload, website_id=1, db=db))

    assert preview["tryout_count"] == 1
    assert preview["totals"]["new_questions"] == 1
    assert preview["totals"]["updated_questions"] == 1
    assert preview["totals"]["removed_questions"] == 1
    assert preview["totals"]["missing_option_labels"] == 2
    assert "read-only reference data" not in str(preview)