You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: command.go
    path of file: ./repos/yao/neo/command
    
    the code of the file until where you have to start completion: package command

import (
	"fmt"
	"regexp"
	"strings"

	"github.com/yaoapp/gou/connector"
	"github.com/yaoapp/yao/aigc"
	"github.com/yaoapp/yao/neo/command/driver"
	"github.com/yaoapp/yao/neo/command/query"
	"github.com/yaoapp/yao/openai"
)

// DefaultStore the default store driver
var DefaultStore Store
var recmd, _ = regexp.Compile(`^\/([a-zA-Z]+) +`)
var reCmdOnly, _ = regexp.Compile(`^\/([a-zA-Z]+)$`)

// SetStore the driver interface
func SetStore(store Store) {
	DefaultStore = store
}

// Match the command from the content
func Match(sid string, query query.Param, input string) (string
    
func Match(sid string, query query.Param, input string) (string, error) {

	if DefaultStore == nil {
		return "", fmt.Errorf("command store is not set")
	}

	// Check the command from the store
	if id, cid, has := DefaultStore.GetRequest(sid); has {
		fmt.Println("Match Requst:", id)
		return cid, nil
	}

	// Match the command use the command ID
	match := reCmdOnly.FindSubmatch([]byte(strings.TrimSpace(input)))
	if match == nil {
		match = recmd.FindSubmatch([]byte(strings.TrimSpace(input)))
	}
	if match != nil {
		key := fmt.Sprintf("[Index]%s", match[1])
		fmt.Println("Match Index:", key)

		if cmd, ok := DefaultStore.Get(key); ok {
			fmt.Println("Match Command:", cmd.ID)
			return cmd.ID, nil
		}
	}

	return DefaultStore.Match(query, input)
}