"""Minimal vector memory module to fix import errors."""

from __future__ import annotations

from typing import Any, Dict, List, Optional


class VectorMemory:
    """Simple in-memory vector store for testing."""

    def __init__(self, db: Optional[Any] = None) -> None:
        """Initialize vector memory.

        Args:
            db: Optional database connection
        """
        self.db = db
        self._memories: List[Dict[str, Any]] = []

    async def add(self, content: str, **metadata: Any) -> str:
        """Add content to memory."""
        memory_id = str(len(self._memories))
        self._memories.append({"id": memory_id, "content": content, **metadata})
        return memory_id

    async def search(self, query: str, limit: int = 5) -> List[Dict[str, Any]]:
        """Search memories."""
        # Simple substring search
        results = []
        for memory in self._memories:
            if query.lower() in memory["content"].lower():
                results.append(memory)
                if len(results) >= limit:
                    break
        return results

    async def clear(self) -> None:
        """Clear all memories."""
        self._memories.clear()


class PostgresVectorMemory:
    """PostgreSQL-backed vector memory (minimal implementation)."""

    def __init__(self, agent_id: str, database_url: Optional[str] = None) -> None:
        """Initialize PostgreSQL vector memory.

        Args:
            agent_id: Unique agent identifier
            database_url: Optional database URL
        """
        self.agent_id = agent_id
        self.database_url = database_url
        self._fallback = VectorMemory()

    async def add(self, content: str, **metadata: Any) -> str:
        """Add content to memory."""
        # Fallback to in-memory for now
        return await self._fallback.add(content, **metadata)

    async def search(self, query: str, limit: int = 5) -> List[Dict[str, Any]]:
        """Search memories."""
        # Fallback to in-memory for now
        return await self._fallback.search(query, limit)

    async def clear(self) -> None:
        """Clear all memories."""
        await self._fallback.clear()

    async def close(self) -> None:
        """Close database connection."""
