"""
Save fact handler.

Handles requests to save new facts to factual memory.
"""
import json
from core.logger import setup_logger

logger = setup_logger('save_fact_handler', service_name='memory_service')


class SaveFactHandler:
    """Handles save fact requests"""

    def __init__(self, facts_ops):
        self.facts_ops = facts_ops

    async def handle(self, msg) -> None:
        """Handle save_fact requests - store new fact"""
        try:
            payload = json.loads(msg.data.decode())

            content = payload.get('content')
            if not content:
                raise ValueError("content is required")

            category = payload.get('category', 'general')
            identities = payload.get('identities', [])
            mutable = payload.get('mutable', True)
            metadata = payload.get('metadata', {})

            step_exec_id = metadata.get('step_exec_id', 'unknown')

            logger.info(f"[μ] [{step_exec_id}] Saving fact: category={category}, content='{content[:50]}...'")

            fact_id = self.facts_ops.create(
                content=content,
                category=category,
                identities=identities,
                mutable=mutable,
                metadata=metadata
            )

            logger.info(f"[μ] [{step_exec_id}] ✅ Created fact {fact_id[:8]}...: category={category}, content='{content[:50]}...'")

            response = {
                "status": "success",
                "fact_id": fact_id,
                "message": "Fact saved successfully"
            }
            await msg.respond(json.dumps(response).encode())

        except Exception as e:
            logger.exception(f"[μ] Failed to save fact: {e}")
            error_response = {"status": "error", "error": str(e)}
            await msg.respond(json.dumps(error_response).encode())