import json
import os
import logging

logger = logging.getLogger(__name__)

DEFAULT_TIME_RANGE_OPTIONS = [
    {"label": "🕐 Last 1 Hour", "value": "1h"},
    {"label": "🕐 Last 4 Hours", "value": "4h"},
    {"label": "🕐 Last 6 Hours", "value": "6h"},
    {"label": "🕐 Last 12 Hours", "value": "12h"},
    {"label": "📅 Last 1 Day", "value": "1d"},
    {"label": "📅 Last 3 Days", "value": "3d"},
    {"label": "📅 Last 7 Days", "value": "7d"},
    {"label": "📅 Last 30 Days", "value": "30d"},
    {"label": "📅 Custom Range", "value": "custom"},
    {"label": "🔴 Real-time", "value": "realtime"}
]

def load_time_range_options():
    """Loads time range options from a JSON file.

    Returns:
        list: A list of dictionaries, each representing a time range option.
    """
    try:
        # Construct path relative to the workspace root
        # Assuming utils is at TCPDashboard/utils
        # and config/options is at TCPDashboard/config/options
        base_dir = os.path.abspath(os.path.join(os.path.dirname(__file__), '..'))
        file_path = os.path.join(base_dir, 'config/options/time_range_options.json')

        with open(file_path, 'r', encoding='utf-8') as f:
            return json.load(f)
    except FileNotFoundError:
        logger.error(f"Time range options file not found at {file_path}. Using default.")
        return DEFAULT_TIME_RANGE_OPTIONS
    except json.JSONDecodeError:
        logger.error(f"Error decoding JSON from {file_path}. Using default.")
        return DEFAULT_TIME_RANGE_OPTIONS
    except Exception as e:
        logger.error(f"An unexpected error occurred while loading time range options: {e}. Using default.")
        return DEFAULT_TIME_RANGE_OPTIONS