import os
import time
from datetime import datetime, date, timedelta
from urllib.parse import urlparse

# PARAMETERS
CONFIGS = {
    "SECRET_KEY": os.environ.get("SECRET_KEY", os.urandom(30).hex()), # Set the secret key for session authentication
    "PERMANENT_SESSION_LIFETIME": timedelta(minutes=60)
}

# PostgreSQL config - support both Railway and local Docker
DATABASE_URL = os.environ.get('DATABASE_URL')
if DATABASE_URL:
    # Railway provides DATABASE_URL
    url = urlparse(DATABASE_URL)
    SQL_CONFIG = dict(
        database=url.path[1:],
        user=url.username,
        host=url.hostname,
        port=url.port or 5432,
        password=url.password
    )
else:
    # Local Docker fallback
    SQL_CONFIG = dict(
        database="portfolio_platform",
        user="postgres",
        host="db",
        port="5432",
        password="thiispassword1qaz!QAZ"
    )

# Redis config - support both Railway and local Docker
REDIS_URL = os.environ.get('REDIS_URL')
if REDIS_URL:
    # Railway provides REDIS_URL
    CACHE_CONFIG = {
        'CACHE_TYPE': 'redis',
        'CACHE_REDIS_URL': REDIS_URL,
    }
else:
    # Local Docker fallback
    CACHE_CONFIG = {
        'CACHE_TYPE': 'redis',
        'CACHE_REDIS_HOST': 'redis',
        'CACHE_REDIS_PORT': 6379,
    }
role_map = dict(max_sharpe='最大化夏普比率',
                max_sortino='最大化索提諾比率', 
                min_volatility='最小化波動率', 
                quadratic_utility='最大化效用函數')