package command

import (
	"dcg/game/pb"
	"strings"
)

type HandlerFunc func(cmd string, user *pb.User)

type Manager struct {
	handlers map[string]HandlerFunc
}

func NewManager() *Manager {
	return &Manager{
		handlers: make(map[string]HandlerFunc),
	}
}

func (m *Manager) Register(cmd string, h HandlerFunc) {
	if _, ok := m.handlers[cmd]; ok {
		return
	}
	m.handlers[cmd] = h
}

func (m *Manager) Handle(cmd string, user *pb.User) {
	if len(cmd) < 0 {
		return
	}
	fChar := cmd[0]
	c := strings.ToLower(string(fChar))
	if h, ok := m.handlers[c]; ok {
		h(cmd, user)
	}
}