import os
from pathlib import Path

BASE_DIR = Path(__file__).resolve().parent.parent

# Helper to read simple KEY=VALUE from .env without extra heavy dependencies
def load_env_file(filepath: Path):
    if not filepath.is_file():
        return
    with open(filepath, "r", encoding="utf-8") as f:
        for line in f:
            line = line.strip()
            if not line or line.startswith("#") or "=" not in line:
                continue
            key, val = line.split("=", 1)
            key = key.strip()
            val = val.strip().strip("\"'")
            if key not in os.environ:
                os.environ[key] = val

load_env_file(BASE_DIR / ".env")

HOST = os.getenv("HOST", "127.0.0.1")
PORT = int(os.getenv("PORT", "8002"))
DEBUG = os.getenv("DEBUG", "False").lower() in ("1", "true", "yes")

SECRET_KEY = os.getenv("SECRET_KEY", "default-dev-secret-key-please-change-in-production")
SESSION_COOKIE_NAME = os.getenv("SESSION_COOKIE_NAME", "notes_session")
SESSION_EXPIRE_DAYS = int(os.getenv("SESSION_EXPIRE_DAYS", "30"))
SESSION_MAX_AGE = SESSION_EXPIRE_DAYS * 86400


RATE_LIMIT_LOGIN_MAX = int(os.getenv("RATE_LIMIT_LOGIN_MAX", "5"))
RATE_LIMIT_LOGIN_WINDOW_SEC = int(os.getenv("RATE_LIMIT_LOGIN_WINDOW_SEC", "60"))

ADMIN_USERNAME = os.getenv("ADMIN_USERNAME", "admin")
ADMIN_PASSWORD = os.getenv("ADMIN_PASSWORD", "")

MYMEMORY_EMAIL = os.getenv("MYMEMORY_EMAIL", "admin@qpid.pro")

DB_PATH = Path(os.getenv("DB_PATH", str(BASE_DIR / "data" / "notes.db")))
DB_PATH.parent.mkdir(parents=True, exist_ok=True)

OLLAMA_BASE_URL = os.getenv("OLLAMA_BASE_URL", "http://127.0.0.1:11434").rstrip("/")
OLLAMA_MODEL = os.getenv("OLLAMA_MODEL", "qwen2.5:3b")