from __future__ import annotations

import os
from pathlib import Path

# Set environment variables BEFORE importing the app or settings module.
# Use a fixed test workspace so every module that imports settings sees the
# same paths. The client fixture wipes the DB before each test.
TEST_DIR = Path(__file__).resolve().parent
TEST_DB = TEST_DIR / "test.sqlite"
TEST_MEDS = TEST_DIR / "fixtures" / "meds.yaml"
TEST_MESSAGES = TEST_DIR / "fixtures" / "messages.yaml"

os.environ["APP_PIN"] = "1234"
os.environ["JWT_SECRET"] = "test-secret-must-be-at-least-32-bytes-long-ok"
os.environ["AGENT_TOKEN"] = "agent-test-token-must-be-long-enough-for-secrets"
os.environ["VAPID_PRIVATE_KEY"] = ""
os.environ["VAPID_PUBLIC_KEY"] = ""
os.environ["OPENROUTER_API_KEY"] = ""
os.environ["DB_PATH"] = str(TEST_DB)
os.environ["MEDS_PATH"] = str(TEST_MEDS)
os.environ["MESSAGES_PATH"] = str(TEST_MESSAGES)

# Neutralize the background scheduler for tests — it binds to the asyncio loop
# and survives poorly across multiple TestClient lifecycles.
import server.scheduler

server.scheduler.start_scheduler = lambda: None  # type: ignore[assignment]

import pytest
from fastapi.testclient import TestClient

from server.app import app
from server.auth import create_token
from server.config_loader import reload_meds_config


def _write_fixtures() -> None:
    TEST_MEDS.parent.mkdir(parents=True, exist_ok=True)
    TEST_MEDS.write_text(
        "timezone: Europe/Berlin\n"
        "slots:\n"
        "  - id: morning\n"
        "    time: \"08:00\"\n"
        "    label: Morgens\n"
        "    meds:\n"
        "      - name: Elvanse\n"
        "        dose: 30mg\n"
        "    reminder_window_minutes: 90\n"
    )
    TEST_MESSAGES.write_text(
        "reminder: [\"Zeit für Medis.\"]\n"
        "success: [\"Genommen.\"]\n"
        "missed: [\"Verpasst.\"]\n"
        "snooze: [\"Snooze.\"]\n"
        "motivation_fallback: [\"Motivation.\"]\n"
        "roast_fallback: [\"Roast.\"]\n"
    )


_write_fixtures()
reload_meds_config()


@pytest.fixture(scope="function")
def client():
    if TEST_DB.exists():
        TEST_DB.unlink()
    with TestClient(app) as c:
        yield c


@pytest.fixture
def user_token() -> str:
    return create_token()


@pytest.fixture
def auth_headers(user_token: str):
    return {"Authorization": f"Bearer {user_token}"}


@pytest.fixture
def agent_headers():
    return {"Authorization": "Bearer agent-test-token-must-be-long-enough-for-secrets"}