"""中控 AI 配置（读 hub .env，与实例同名 AI 变量）。"""
from __future__ import annotations

import os

HUB_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

SUMMARY_TEMPERATURE = 0.15
CHAT_TEMPERATURE = 0.5
CHAT_MAX_HISTORY_TURNS = 40
CHAT_MAX_OUTPUT_TOKENS = 2048
CHAT_CONTEXT_MAX_CHARS = 128_000
CHAT_SUMMARY_EXCERPT_MAX_CHARS = 8000
SUMMARY_RETENTION_DAYS = 90
CHAT_SESSION_RETENTION_DAYS = 60
FUND_HISTORY_DAYS = 180
CHAT_MAX_ATTACHMENTS = 3
CHAT_MAX_IMAGE_BYTES = 4 * 1024 * 1024
CHAT_MAX_TEXT_FILE_BYTES = 200 * 1024


def trading_day_reset_hour() -> int:
    try:
        return int(os.getenv("TRADING_DAY_RESET_HOUR", "8") or "8")
    except ValueError:
        return 8


def hub_flask_timeout() -> float:
    try:
        return float(os.getenv("HUB_FLASK_TIMEOUT", "10") or "10")
    except ValueError:
        return 10.0


def hub_agent_timeout() -> float:
    try:
        return float(os.getenv("HUB_AGENT_TIMEOUT", "8") or "8")
    except ValueError:
        return 8.0