package net

import (
	"net"

	"git.loafle.net/commons/server-go"
)

type ServerHandler interface {
	server.ServerHandler

	OnError(serverCtx server.ServerCtx, conn net.Conn, status int, reason error)

	RegisterServlet(servlet Servlet)
	Servlet() Servlet
}

type ServerHandlers struct {
	server.ServerHandlers

	servlet Servlet
}

func (sh *ServerHandlers) Init(serverCtx server.ServerCtx) error {
	if err := sh.ServerHandlers.Init(serverCtx); nil != err {
		return err
	}

	if nil != sh.servlet {
		if err := sh.servlet.Init(serverCtx); nil != err {
			return err
		}
	}

	return nil
}

func (sh *ServerHandlers) Destroy(serverCtx server.ServerCtx) {
	if nil != sh.servlet {
		sh.servlet.Destroy(serverCtx)
	}

	sh.ServerHandlers.Destroy(serverCtx)
}

func (sh *ServerHandlers) OnError(serverCtx server.ServerCtx, conn net.Conn, status int, reason error) {
}

func (sh *ServerHandlers) RegisterServlet(servlet Servlet) {
	sh.servlet = servlet
}

func (sh *ServerHandlers) Servlet() Servlet {
	return sh.servlet
}

func (sh *ServerHandlers) Validate() error {
	if err := sh.ServerHandlers.Validate(); nil != err {
		return err
	}

	if 0 >= sh.Concurrency {
		sh.Concurrency = 0
	}

	return nil
}