"""PostgreSQL connection settings for the development sample service."""
import json
import os
from pathlib import Path

import psycopg
from psycopg.rows import dict_row

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


def database_url():
    configured = os.environ.get("DATABASE_URL")
    if configured:
        return configured
    local = ROOT / ".local" / "database.json"
    if local.exists():
        return json.loads(local.read_text(encoding="utf-8-sig"))["url"]
    raise RuntimeError("Database is not configured. Run mockups/setup-database.ps1 or set DATABASE_URL.")


def connect():
    return psycopg.connect(database_url(), row_factory=dict_row, connect_timeout=5,
                           options="-c search_path=analytics,public -c timezone=UTC -c statement_timeout=15000")