package commands

import "strings"

type CommandHandler func(ctx *CommandContext)

var (
	commandMap = make(map[string]*CommandHolder)
)

func Register(prefix string, f CommandHandler) {
	h := parseCommandUsage(prefix)
	h.Handler = f
	commandMap[h.Name] = h
}

func Find(prefix, name, full string) *CommandHolder {
	if strings.Index(name, prefix) == 0 {
		name = name[len(prefix):]

		if holder := Handler(name); holder != nil {
			return holder
		}
	}

	return nil
}

func Handler(name string) *CommandHolder {
	if holder, ok := commandMap[name]; ok {
		return holder
	}

	return nil
}