package websocket

import (
	"context"
	netHttp "net/http"
	"time"
)

// MessageHandler 业务消息处理函数
type MessageHandler func(ctx context.Context, conn *WsConnection, payload interface{})

// WsMessage 通用入站消息
type WsMessage struct {
	Type    string      `json:"type"`
	Payload interface{} `json:"payload,omitempty"`
}

// WsPushMsg 通用出站推送消息（业务可自行扩展字段）
type WsPushMsg struct {
	Type    string      `json:"type"`
	Message string      `json:"message,omitempty"`
	Data    interface{} `json:"data,omitempty"`
	Error   string      `json:"error,omitempty"`
}

// ServerOptions 服务配置
type ServerOptions struct {
	readTimeout       time.Duration
	writeTimeout      time.Duration
	heartbeatInterval time.Duration
	workerPoolSize    int
	maxConnections    int
	connKeyPrefix     string
	checkOrigin       func(r *netHttp.Request) bool
}

// ServerOption 配置函数
type ServerOption func(*ServerOptions)

func WithReadTimeout(d time.Duration) ServerOption {
	return func(o *ServerOptions) { o.readTimeout = d }
}
func WithWriteTimeout(d time.Duration) ServerOption {
	return func(o *ServerOptions) { o.writeTimeout = d }
}
func WithHeartbeatInterval(d time.Duration) ServerOption {
	return func(o *ServerOptions) { o.heartbeatInterval = d }
}
func WithWorkerPoolSize(n int) ServerOption {
	return func(o *ServerOptions) { o.workerPoolSize = n }
}
func WithMaxConnections(n int) ServerOption {
	return func(o *ServerOptions) { o.maxConnections = n }
}
func WithConnKeyPrefix(p string) ServerOption {
	return func(o *ServerOptions) { o.connKeyPrefix = p }
}
func WithCheckOrigin(fn func(r *netHttp.Request) bool) ServerOption {
	return func(o *ServerOptions) { o.checkOrigin = fn }
}

func defaultOptions() ServerOptions {
	return ServerOptions{
		readTimeout:       DefaultReadTimeout,
		writeTimeout:      DefaultWriteTimeout,
		heartbeatInterval: DefaultHeartbeatInterval,
		workerPoolSize:    DefaultWorkerPoolSize,
		maxConnections:    DefaultMaxConnections,
		connKeyPrefix:     DefaultConnKeyPrefix,
		checkOrigin:       func(r *netHttp.Request) bool { return true },
	}
}