package syseventhub

import (
	"time"

	"git.rosy.net.cn/jx-callback/business/jxutils/eventhub"
	"git.rosy.net.cn/jx-callback/globals/api"
)

const (
	EventCategory = "sys"

	EventTypeWXToken = "wxtoken"
)

type Hub struct {
	eventHub *eventhub.EventHub
}

type Criteria struct {
}

var (
	SysEventHub *Hub
)

func init() {
	SysEventHub = New()
}

func New() (hub *Hub) {
	hub = &Hub{
		eventHub: eventhub.New(),
	}
	hub.eventHub.RegisterProducer(EventCategory, hub)
	return hub
}

func (h *Hub) GetEvent(eventTypeList []string, criteria interface{}) (event *eventhub.EventInfo, err error) {
	for _, eventType := range eventTypeList {
		switch eventType {
		case EventTypeWXToken:
			return h.getWXToken(criteria)
		}
	}
	return event, err
}

func (h *Hub) getWXToken(criteria interface{}) (event *eventhub.EventInfo, err error) {
	criteriaToken := ""
	if criteria != nil {
		criteriaToken = criteria.(string)
	}
	token := api.WeixinAPI.CBGetToken()
	if token != criteriaToken {
		return &eventhub.EventInfo{
			Type: EventTypeWXToken,
			Data: token,
		}, nil
	}
	return nil, nil
}

func (h *Hub) IsCriteriaMatch(eventInfo *eventhub.EventInfo, criteria interface{}) bool {
	return true
}

func (h *Hub) OnNewWXToken(token string) {
	h.eventHub.PostNewEvent(EventCategory, &eventhub.EventInfo{
		Type: EventTypeWXToken,
		Data: token,
	})
}

func (h *Hub) GetWXToken(oldToken string, waitTime time.Duration) (token string) {
	eventInfo, err := h.eventHub.GetEvent(EventCategory, []string{EventTypeWXToken}, oldToken, waitTime)
	if err == nil && eventInfo != nil {
		token = eventInfo.Data.(string)
	}
	return token
}