"""Environment driven configuration values."""
from __future__ import annotations

import os
import re
from pathlib import Path

from dotenv import load_dotenv

from .utils import normalize_recipients

load_dotenv()

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

SECRET_KEY = os.getenv("FLASK_SECRET_KEY", "dev")
SENTRY_DSN = os.getenv("SENTRY_DSN")
SENTRY_TRACES_SAMPLE_RATE = float(
    os.getenv("SENTRY_TRACES_SAMPLE_RATE", "0.0"))
ENABLE_REQUEST_LOGS = os.getenv("ENABLE_REQUEST_LOGS", "true").lower() in {
    "1", "true", "yes"}
ENABLE_JSON_LOGS = os.getenv("ENABLE_JSON_LOGS", "false").lower() in {
    "1", "true", "yes"}

DATABASE_URL = os.getenv("DATABASE_URL")
POSTGRES_URL = os.getenv("POSTGRES_URL")


def resolve_sqlite_path() -> Path:
    """Resolve the configured SQLite path honoring DATABASE_URL."""
    if DATABASE_URL:
        if DATABASE_URL.startswith("sqlite:"):
            match = re.match(r"sqlite:(?:////?|)(.+)", DATABASE_URL)
            if match:
                return Path(match.group(1))
            return Path("data/forms.db")
        return Path(DATABASE_URL)
    return BASE_DIR / "data" / "forms.db"


SQLITE_DB_PATH = resolve_sqlite_path()

RATE_LIMIT_MAX = int(os.getenv("RATE_LIMIT_MAX", "10"))
RATE_LIMIT_WINDOW = int(os.getenv("RATE_LIMIT_WINDOW", "60"))
REDIS_URL = os.getenv("REDIS_URL")

STRICT_ORIGIN_CHECK = os.getenv("STRICT_ORIGIN_CHECK", "false").lower() in {
    "1", "true", "yes"}
ALLOWED_ORIGIN = os.getenv("ALLOWED_ORIGIN")

SMTP_SETTINGS = {
    "host": os.getenv("SMTP_HOST"),
    "port": int(os.getenv("SMTP_PORT", "587")),
    "username": os.getenv("SMTP_USERNAME"),
    "password": os.getenv("SMTP_PASSWORD"),
    "sender": os.getenv("SMTP_SENDER"),
    "use_tls": os.getenv("SMTP_USE_TLS", "true").lower() in {"1", "true", "yes"},
    "recipients": normalize_recipients(os.getenv("SMTP_RECIPIENTS")),
}

if not SMTP_SETTINGS["sender"] and SMTP_SETTINGS["username"]:
    SMTP_SETTINGS["sender"] = SMTP_SETTINGS["username"]

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