"""
QuantDinger Python API entrypoint.
"""
import os
import sys

# Ensure UTF-8 console output on Windows to avoid UnicodeEncodeError in logs.
# (PowerShell default encoding may be GBK/CP936.)
try:
    if hasattr(sys.stdout, "reconfigure"):
        sys.stdout.reconfigure(encoding="utf-8", errors="replace")
    if hasattr(sys.stderr, "reconfigure"):
        sys.stderr.reconfigure(encoding="utf-8", errors="replace")
except Exception:
    pass

# Load local .env early so config classes can read from os.environ.
# This keeps local deployment simple: edit one file and run.
try:
    from dotenv import load_dotenv
    this_dir = os.path.dirname(os.path.abspath(__file__))
    # Primary: backend_api_python/.env (same dir as run.py)
    load_dotenv(os.path.join(this_dir, ".env"), override=False)
    # Fallback: repo-root/.env (one level up) for users who place .env at workspace root.
    parent_dir = os.path.dirname(this_dir)
    load_dotenv(os.path.join(parent_dir, ".env"), override=False)
except Exception:
    # python-dotenv is optional; environment variables can still be provided by the OS.
    pass

# Optional: disable tqdm progress bars (some data providers like akshare may emit them),
# keeping console logs clean in local mode.
os.environ.setdefault("TQDM_DISABLE", "1")

# Optional: normalize outbound proxy settings for the whole process.
# This makes requests/yfinance/finnhub/tiingo/GoogleSearch etc work behind a local proxy.
def _apply_proxy_env():
    def _set_if_blank(key: str, value: str) -> None:
        """
        Set env var if it is missing OR present but empty.
        (`os.environ.setdefault` does not override empty strings.)
        """
        cur = os.getenv(key)
        if cur is None or str(cur).strip() == "":
            os.environ[key] = value

    # If user provided explicit proxy URL, honor it.
    proxy_url = (os.getenv('PROXY_URL') or '').strip()

    # If user only provided port, build a URL (common local proxy setups).
    if not proxy_url:
        port = (os.getenv('PROXY_PORT') or '').strip()
        if port:
            host = (os.getenv('PROXY_HOST') or '127.0.0.1').strip()
            scheme = (os.getenv('PROXY_SCHEME') or 'socks5h').strip()
            proxy_url = f"{scheme}://{host}:{port}"

    if not proxy_url:
        return

    # Standard env vars used by requests and many libraries.
    _set_if_blank('ALL_PROXY', proxy_url)
    _set_if_blank('HTTP_PROXY', proxy_url)
    _set_if_blank('HTTPS_PROXY', proxy_url)

    # CCXT config uses CCXT_PROXY in our codebase.
    _set_if_blank('CCXT_PROXY', proxy_url)

_apply_proxy_env()

# Add project root to Python path
sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))

from app import create_app
from app.config.settings import Config

# Create app instance (for gunicorn use)
# gunicorn -c gunicorn_config.py "run:app"
app = create_app()


def main():
    """启动应用"""
    # Keep startup messages ASCII-only and short.
    print("QuantDinger Python API v2.0.0")
    
    # Check demo mode status for debugging
    demo_status = os.getenv('IS_DEMO_MODE', 'false').lower()
    print(f"Status Check: IS_DEMO_MODE={demo_status}")
    if demo_status == 'true':
        print("!!! RUNNING IN DEMO MODE (READ-ONLY) !!!")
    else:
        print("Running in FULL ACCESS mode")
        
    print(f"Service starting at: http://{Config.HOST}:{Config.PORT}")
    
    # Flask dev server is for local development only.
    app.run(
        host=Config.HOST,
        port=Config.PORT,
        debug=Config.DEBUG,
        threaded=True
    )


if __name__ == '__main__':
    main()