package main

import (
	"fmt"
	"strings"
)

type room struct {
	users []*user
}

func createRoom() *room {
	return &room{
		users: make([]*user, 16),
	}
}

func (r *room) joinUser(u *user) {
	for _, usr := range r.users {
		if usr.nick == u.nick {

		}
	}
	r.users = append(r.users, u)
	u.online = true
}

func (r *room) sendToAll(msg string) {
	for _, u := range r.users {
		if u.online {
			u.write(msg)
		}
	}
}

func (r *room) sendToRest(msg string, skip *user) {
	for _, u := range r.users {
		if u.online && u != skip {
			u.write(msg)
		}
	}
}

func (r *room) connected() (nicks []string) {
	for _, u := range r.users {
		if u.online {
			nicks = append(nicks, u.nick)
		}
	}
	return nicks
}

func (r *room) joinMsg(u *user) string {
	return fmt.Sprintf("* %s has joined the channel", u.nick)
}

func (r *room) connectMsg() string {
	return fmt.Sprintf("* The room contains: %s", strings.Join(r.connected(), ", "))
}