"""
Error handlers with memory awareness for production deployment.
"""

import logging

from flask import Flask, jsonify

from src.llm.llm_configuration_error import LLMConfigurationError
from src.utils.memory_utils import get_memory_usage, optimize_memory

logger = logging.getLogger(__name__)


def register_error_handlers(app: Flask):
    """Register memory-aware error handlers."""

    @app.errorhandler(500)
    def handle_internal_error(error):
        """Handle internal server errors with memory optimization."""
        memory_mb = get_memory_usage()
        logger.error(f"Internal server error (Memory: {memory_mb:.1f}MB): {error}")

        # If memory is high, try to optimize
        if memory_mb > 400:
            logger.warning("High memory usage detected, optimizing...")
            optimize_memory()

        return (
            jsonify(
                {
                    "status": "error",
                    "message": "Internal server error",
                    "memory_mb": round(memory_mb, 1),
                }
            ),
            500,
        )

    @app.errorhandler(503)
    def handle_service_unavailable(error):
        """Handle service unavailable errors."""
        memory_mb = get_memory_usage()
        logger.error(f"Service unavailable (Memory: {memory_mb:.1f}MB): {error}")

        return (
            jsonify(
                {
                    "status": "error",
                    "message": "Service temporarily unavailable",
                    "memory_mb": round(memory_mb, 1),
                }
            ),
            503,
        )

    @app.errorhandler(LLMConfigurationError)
    def handle_llm_configuration_error(error):
        """Handle LLM configuration errors with consistent JSON response."""
        memory_mb = get_memory_usage()
        logger.error(f"LLM configuration error (Memory: {memory_mb:.1f}MB): {error}")

        return (
            jsonify(
                {
                    "status": "error",
                    "message": f"LLM service configuration error: {str(error)}",
                    "details": ("Please ensure OPENROUTER_API_KEY or GROQ_API_KEY " "environment variables are set"),
                }
            ),
            503,
        )