"""E2E test configuration.

These tests are SKIPPED by default unless a valid LLM provider is configured.
The repo's `.env` file is auto-loaded so the same settings used by the app
also drive the test run.

Provider별 통과 조건:
- openai  : `LLM_API_KEY` 필요 (LM Studio 등 OpenAI-호환 로컬 서버는 더미 키도 OK)
- ollama  : 별도 키 불필요 (로컬 데몬만 동작하면 됨)

To run:
    pytest tests/e2e -m e2e

LLM 호출이 실제로 일어남. OpenAI 클라우드는 비용 발생, 로컬 LLM은 무료.
"""

from __future__ import annotations

import os
import sys
from pathlib import Path

import pytest

REPO_ROOT = Path(__file__).resolve().parents[2]
for p in (REPO_ROOT, REPO_ROOT / "vendored" / "ontocast"):
    if str(p) not in sys.path:
        sys.path.insert(0, str(p))

# Auto-load .env so e2e tests pick up the same LLM settings as the app.
_env_path = REPO_ROOT / ".env"
if _env_path.exists():
    try:
        from dotenv import load_dotenv

        load_dotenv(_env_path, override=False)
    except ImportError:
        # python-dotenv가 없으면 직접 간단 파싱.
        for line in _env_path.read_text(encoding="utf-8").splitlines():
            line = line.strip()
            if not line or line.startswith("#") or "=" not in line:
                continue
            key, _, value = line.partition("=")
            os.environ.setdefault(key.strip(), value.strip())


def _llm_configured() -> bool:
    """Provider별로 e2e 실행 가능 여부 판단."""
    provider = (os.environ.get("LLM_PROVIDER") or "openai").lower()
    if provider == "ollama":
        # Ollama는 별도 API 키 불필요.
        return True
    # openai 또는 OpenAI-호환 로컬 서버 — 더미 키라도 들어 있어야 OK.
    return bool(os.environ.get("LLM_API_KEY"))


def pytest_collection_modifyitems(
    config: pytest.Config, items: list[pytest.Item]
) -> None:
    """Skip e2e tests unless the LLM provider is properly configured."""
    if _llm_configured():
        return
    provider = (os.environ.get("LLM_PROVIDER") or "openai").lower()
    skip_marker = pytest.mark.skip(
        reason=(
            f"E2E tests require LLM provider config. "
            f"Provider={provider!r}, LLM_API_KEY={'set' if os.environ.get('LLM_API_KEY') else 'missing'}."
        )
    )
    for item in items:
        if "tests/e2e" in str(item.fspath).replace("\\", "/"):
            item.add_marker(skip_marker)


def pytest_configure(config: pytest.Config) -> None:
    config.addinivalue_line(
        "markers",
        "e2e: end-to-end test that requires a real LLM and may cost money",
    )