package adapters

import (
	"context"

	"github.com/memohai/memoh/internal/mcp"
)

// Provider is the unified interface for memory systems. Each provider type
// (builtin, mem0, openviking, etc.) implements this independently with its
// own storage, retrieval, and tool logic.
type Provider interface {
	// Type returns the provider type identifier (e.g. "builtin", "mem0").
	Type() string

	// --- Conversation Hooks ---

	OnBeforeChat(ctx context.Context, req BeforeChatRequest) (*BeforeChatResult, error)
	OnAfterChat(ctx context.Context, req AfterChatRequest) error

	// --- MCP Tools ---

	ListTools(ctx context.Context, session mcp.ToolSessionContext) ([]mcp.ToolDescriptor, error)
	CallTool(ctx context.Context, session mcp.ToolSessionContext, toolName string, arguments map[string]any) (map[string]any, error)

	// --- CRUD ---

	Add(ctx context.Context, req AddRequest) (SearchResponse, error)
	Search(ctx context.Context, req SearchRequest) (SearchResponse, error)
	GetAll(ctx context.Context, req GetAllRequest) (SearchResponse, error)
	Update(ctx context.Context, req UpdateRequest) (MemoryItem, error)
	Delete(ctx context.Context, memoryID string) (DeleteResponse, error)
	DeleteBatch(ctx context.Context, memoryIDs []string) (DeleteResponse, error)
	DeleteAll(ctx context.Context, req DeleteAllRequest) (DeleteResponse, error)

	// --- Lifecycle ---

	Compact(ctx context.Context, filters map[string]any, ratio float64, decayDays int) (CompactResult, error)
	Usage(ctx context.Context, filters map[string]any) (UsageResponse, error)
}

// SourceSyncProvider is implemented by providers that can report runtime status
// and rebuild derived storage from a canonical source of truth.
type SourceSyncProvider interface {
	Status(ctx context.Context, botID string) (MemoryStatusResponse, error)
	Rebuild(ctx context.Context, botID string) (RebuildResult, error)
}