package engine

import (
	"fmt"

	"robotfs/store/redis_lua"
	"robotfs/utils"
)

type Engine struct {
	metadataManager *MetaDataManager
	storageManager  *StorageManager
}

func NewEngine() *Engine {
	return &Engine{}
}

func (e *Engine) Start() error {
	store := redis_lua.NewRedisLuaStore()
	if err := store.Initialize(utils.GetViper(), "redis."); err != nil {
		return fmt.Errorf("failed to initialize meta store: %v", err)
	}
	metadata, err := NewMetaDataManager(store)
	if err != nil {
		return fmt.Errorf("failed to create metadata manager: %v", err)
	}
	e.metadataManager = metadata

	s3Config, err := Initialize(utils.GetViper(), "s3.")
	if err != nil {
		return fmt.Errorf("failed to initialize s3 config: %v", err)
	}
	storageManager, err := NewStorageManager(s3Config)
	if err != nil {
		return fmt.Errorf("failed to create storage manager: %v", err)
	}
	e.storageManager = storageManager

	return nil
}

func (e *Engine) Stop() {
	if e.metadataManager != nil {
		e.metadataManager.Shutdown()
	}
}