"""
💾 Haven Memory System
Conversation history and context management.
"""

import json
import os
from datetime import datetime


class MemoryJournal:
    def __init__(self, filepath="haven_memory.json"):
        self.filepath = filepath
        self._ensure_file()

    def _ensure_file(self):
        if not os.path.exists(self.filepath):
            with open(self.filepath, 'w') as f:
                json.dump([], f)

    def save_interaction(self, role, content, avatar=None):
        try:
            with open(self.filepath, 'r') as f:
                history = json.load(f)
        except:
            history = []
        
        entry = {
            "timestamp": datetime.now().isoformat(),
            "role": role,
            "content": content,
            "avatar": avatar
        }
        history.append(entry)
        
        # Keep last 50 entries
        if len(history) > 50:
            history = history[-50:]
            
        with open(self.filepath, 'w') as f:
            json.dump(history, f, indent=2)

    def load_history(self):
        try:
            with open(self.filepath, 'r') as f:
                return json.load(f)
        except:
            return []

    def get_context_string(self, limit=5):
        history = self.load_history()[-limit:]
        context = ""
        for msg in history:
            context += f"{msg['role'].upper()}: {msg['content']}\n"
        return context