app.py

"""
HuggingFace Spaces entry point for ChatCal.ai
Minimal changes - uses JWT sessions instead of Redis
"""
import os
import sys
import uvicorn
from datetime import datetime

# Add the current directory to Python path for imports
sys.path.insert(0, '/app')

# Set HF-specific environment variables
os.environ.setdefault("SESSION_BACKEND", "jwt")
os.environ.setdefault("APP_ENV", "production")
os.environ.setdefault("APP_PORT", "7860")  # HF Spaces default port

# Import after setting up the path
from app.api.main import app

if __name__ == "__main__":
    # Setup enhanced dual logging (stdout + file)
    from app.core.logging_config import setup_enhanced_logging, setup_breakpoint_debugging

    # Enable DEBUG level for comprehensive logging
    log_level = os.environ.get("LOG_LEVEL", "DEBUG")
    log_file = setup_enhanced_logging(log_level=log_level, log_file="/tmp/app.log")
    setup_breakpoint_debugging()

    import logging
    logger = logging.getLogger("app.startup")

    port = int(os.environ.get("PORT", os.environ.get("APP_PORT", 7860)))

    logger.info(f"🚀 Starting ChatCal.ai VoiceCal-ai-v1 on port {port}")
    logger.info(f"🔧 Session Backend: {os.environ.get('SESSION_BACKEND', 'unknown')}")
    logger.info(f"🌍 Environment: {os.environ.get('APP_ENV', 'unknown')}")
    logger.info(f"📁 Log file: {log_file}")
    logger.info(f"🐛 SSH debugging available via Dev Mode")

    # Additional startup diagnostics
    logger.debug("🔍 Environment check:")
    required_vars = ["GROQ_API_KEY", "GOOGLE_CLIENT_ID", "GOOGLE_CLIENT_SECRET", "SECRET_KEY"]
    for var in required_vars:
        value = os.environ.get(var, "NOT_SET")
        masked = value[:10] + "..." if len(value) > 10 and value != "NOT_SET" else value
        logger.debug(f"   {var}: {masked}")

    try:
        # Add startup delay to prevent rapid restart loops
        import time
        time.sleep(2)  # Give HF Spaces time to stabilize

        uvicorn.run(
            app,
            host="0.0.0.0",
            port=port,
            log_level="warning",  # Reduce uvicorn noise, our dual logger handles app logs
            access_log=False,     # Reduce access log spam
            reload=False,         # Never use reload in production
            workers=1             # Single worker for HF Spaces
        )
    except Exception as e:
        logger.critical(f"💥 Application startup failed: {e}")
        raise