package service

import (
	"fmt"
	"git.bvbej.com/bvbej/base-golang/pkg/websocket/codec"
	"git.bvbej.com/bvbej/base-golang/pkg/websocket/util"
	"reflect"
	"strings"
)

type Handler struct {
	Receiver reflect.Value  // 值
	Method   reflect.Method // 方法
	Type     reflect.Type   // 类型
	IsRawArg bool           // 数据是否需要序列化
}

func RegisterHandler(components ...interface{}) map[string]*Handler {
	methods := make(map[string]*Handler)
	for _, component := range components {
		rt := reflect.TypeOf(component)
		rv := reflect.ValueOf(component)

		typeName := reflect.Indirect(rv).Type().Name()
		if typeName == "" {
			continue
		}
		if !util.IsExported(typeName) {
			continue
		}

		for m := 0; m < rt.NumMethod(); m++ {
			method := rt.Method(m)
			mt := method.Type
			mn := method.Name
			if isHandlerMethod(method) {
				raw := false
				if mt.In(2) == typeOfBytes {
					raw = true
				}
				router := fmt.Sprintf("%s.%s", strings.ToLower(typeName), strings.ToLower(mn))
				methods[router] = &Handler{
					Receiver: rv,
					Method:   method,
					Type:     mt.In(2),
					IsRawArg: raw,
				}
			}
		}
	}

	for router, handler := range methods {
		codec.RegisterMessage(router, handler.Type)
	}

	return methods
}