package server

import (
	"fmt"
	"net"
)

type ServerHandler interface {
	GetName() string
	GetMaxConnections() int

	ServerContext() ServerContext

	Init(serverCTX ServerContext) error
	OnStart(serverCTX ServerContext) error
	OnError(serverCTX ServerContext, conn net.Conn, status int, reason error)
	OnStop(serverCTX ServerContext)
	Destroy(serverCTX ServerContext)

	Listen(serverCTX ServerContext) (net.Listener, error)
	Servlet() Servlet

	Validate()
}

type ServerHandlers struct {
	ServerHandler

	Name           string
	MaxConnections int
}

func (sh *ServerHandlers) ServerContext() ServerContext {
	return nil
}

func (sh *ServerHandlers) Init(serverCTX ServerContext) error {
	return nil
}

func (sh *ServerHandlers) OnStart(serverCTX ServerContext) error {
	return nil
}

func (sh *ServerHandlers) OnError(serverCTX ServerContext, conn net.Conn, status int, reason error) {
}

func (sh *ServerHandlers) OnStop(serverCTX ServerContext) {

}

func (sh *ServerHandlers) Destroy(serverCTX ServerContext) {

}

func (sh *ServerHandlers) Listen(serverCTX ServerContext) (net.Listener, error) {
	return nil, fmt.Errorf("Server: Method[ServerHandler.Listen] is not implemented")
}

func (sh *ServerHandlers) Servlet() Servlet {
	return nil
}

func (sh *ServerHandlers) Validate() {
	if "" == sh.Name {
		sh.Name = "Server"
	}

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