package client

import (
	"fmt"
	"sync/atomic"
)

type ClientHandler interface {
	GetName() string
	GetConnector() Connector

	ClientCtx() ClientCtx

	Init(clientCtx ClientCtx) error
	OnStart(clientCtx ClientCtx) error
	OnStop(clientCtx ClientCtx)
	Destroy(clientCtx ClientCtx)

	Validate() error
}

type ClientHandlers struct {
	Name      string    `json:"name,omitempty"`
	Connector Connector `json:"-"`

	validated atomic.Value
}

func (ch *ClientHandlers) ClientCtx() ClientCtx {
	return NewClientCtx(nil)
}

func (ch *ClientHandlers) Init(clientCtx ClientCtx) error {
	return nil
}

func (ch *ClientHandlers) OnStart(clientCtx ClientCtx) error {
	return nil
}

func (ch *ClientHandlers) OnStop(clientCtx ClientCtx) {

}

func (ch *ClientHandlers) Destroy(clientCtx ClientCtx) {

}

func (ch *ClientHandlers) GetName() string {
	return ch.Name
}

func (ch *ClientHandlers) GetConnector() Connector {
	return ch.Connector
}

func (ch *ClientHandlers) Validate() error {
	if nil != ch.validated.Load() {
		return nil
	}
	ch.validated.Store(true)

	if nil == ch.Connector {
		return fmt.Errorf("Connector is not valid")
	}

	if err := ch.Connector.Validate(); nil != err {
		return err
	}

	return nil
}