package protocol

import (
	"git.noahlan.cn/noahlan/nnet/core"
	"git.noahlan.cn/noahlan/nnet/entity"
	"git.noahlan.cn/noahlan/nnet/middleware"
	"git.noahlan.cn/noahlan/nnet/packet"
	"git.noahlan.cn/noahlan/ntools-go/core/nlog"
	"time"
)

type (
	NNetConfig struct {
		HeartbeatInterval  time.Duration
		HandshakeValidator HandshakeValidatorFunc
	}

	HandshakeReq struct {
		Version      string `json:"version"`      // 客户端版本，服务器以此判断是否合适与客户端通信
		Type         string `json:"type"`         // 客户端类型，与客户端版本号一起来确定客户端是否合适
		ClientId     string `json:"clientId"`     // 客户端ID，服务器以此取值
		ClientSecret string `json:"clientSecret"` // 客户端密钥，服务器以此判定客户端是否可用

		// 透传信息
		Payload interface{} `json:"payload,optional,omitempty"`
	}

	HandshakeResp struct {
		// 心跳间隔，单位秒 0表示不需要心跳
		Heartbeat int64 `json:"heartbeat"`

		*RouteMap

		// 透传信息
		Payload interface{} `json:"payload,optional,omitempty"`
	}
)

func WithNNetClientProtocol(onReady OnReadyFunc) []core.RunOption {
	router := NewNNetRouter().(*nNetRouter)
	packer := NewNNetPacker(router.routeMap)
	opts := []core.RunOption{
		WithNNetClientPipeline(onReady, packer),
		core.WithRouter(router),
		core.WithPacker(func() packet.Packer { return NewNNetPacker(router.routeMap) }),
	}

	return opts
}

func WithNNetProtocol(config NNetConfig) []core.RunOption {
	if config.HandshakeValidator == nil {
		config.HandshakeValidator = func(data *HandshakeReq) error {
			return nil
		}
	}
	router := NewNNetRouter().(*nNetRouter)
	handshakeAckData := &HandshakeResp{
		Heartbeat: int64(config.HeartbeatInterval.Seconds()),
		RouteMap:  router.routeMap,
	}
	router.routeMap.Routes["hahah"] = 222

	packer := NewNNetPacker(router.routeMap)

	opts := []core.RunOption{
		WithNNetPipeline(handshakeAckData, config.HandshakeValidator, packer),
		core.WithRouter(router),
		core.WithPacker(func() packet.Packer { return NewNNetPacker(router.routeMap) }),
	}

	if config.HeartbeatInterval.Seconds() > 0 {
		hbd, err := packer.Pack(Heartbeat, nil)
		nlog.Must(err)

		opts = append(opts, middleware.WithHeartbeat(config.HeartbeatInterval, func(_ entity.NetworkEntity) []byte {
			return hbd
		}))
	}

	return opts
}