"""
config.py – Configuration and secrets for CoinDesk API client.

- Defines API_KEY, BASE_URL, and optional TIMEZONE constants
- Loads environment variables securely (e.g., via python-dotenv)
- Configures default headers (Authorization, Content-Type)
"""

import os
from dotenv import load_dotenv

load_dotenv()

API_KEY = os.getenv("COINDESK_API_KEY")
BASE_URL = os.getenv("COINDESK_BASE_URL", "https://data-api.coindesk.com/").rstrip('/')
TIMEZONE = os.getenv("COINDESK_TIMEZONE", "UTC")

# Flexible parameters for data collection
MARKET = os.getenv("COINDESK_MARKET", "binance")
SYMBOL = os.getenv("COINDESK_SYMBOL", "BTC-USD")
INSTRUMENTS = os.getenv("COINDESK_INSTRUMENTS", "BTC-USD").split(",")
DAYS = int(os.getenv("COINDESK_DAYS_OLD", 7))
FUTURES_LIMIT = int(os.getenv("COINDESK_FUTURES_LIMIT", 50))
SENTIMENT_LIMIT = int(os.getenv("COINDESK_SENTIMENT_LIMIT", 50))
BLOCK_NUMBER = int(os.getenv("COINDESK_BLOCK_NUMBER", 100000))

HEADERS = {
    "Authorization": f"Bearer {API_KEY}",
    "Content-Type": "application/json"
}