feature: 公众号客服消息增加「小程序卡片消息」类型；添加 GetCustomerMessageManager (#320)

* fix officialaccount customer_message

* fix golint comment

Co-authored-by: huangxiang <huangxiang@didichuxing.com>

officialaccount/message/customer_message.go

@@ -73,6 +73,20 @@ func NewCustomerVoiceMessage(toUser, mediaID string) *CustomerMessage {
 	}
 }
 
+//NewCustomerMiniprogrampageMessage 小程序卡片消息的构造方法
+func NewCustomerMiniprogrampageMessage(toUser, title, appID, pagePath, thumbMediaID string) *CustomerMessage {
+	return &CustomerMessage{
+		ToUser:  toUser,
+		Msgtype: MsgTypeMiniprogrampage,
+		Miniprogrampage: &MediaMiniprogrampage{
+			Title:        title,
+			AppID:        appID,
+			Pagepath:     pagePath,
+			ThumbMediaID: thumbMediaID,
+		},
+	}
+}
+
 //MediaText 文本消息的文字
 type MediaText struct {
 	Content string `json:"content"`
@@ -134,7 +148,7 @@ type MediaWxcard struct {
 //MediaMiniprogrampage 小程序消息
 type MediaMiniprogrampage struct {
 	Title        string `json:"title"`
-	Appid        string `json:"appid"`
+	AppID        string `json:"appid"`
 	Pagepath     string `json:"pagepath"`
 	ThumbMediaID string `json:"thumb_media_id"`
 }

officialaccount/message/message.go

@@ -24,6 +24,8 @@ const (
 	MsgTypeVoice = "voice"
 	//MsgTypeVideo 表示视频消息
 	MsgTypeVideo = "video"
+	//MsgTypeMiniprogrampage 表示小程序卡片消息
+	MsgTypeMiniprogrampage = "miniprogrampage"
 	//MsgTypeShortVideo 表示短视频消息[限接收]
 	MsgTypeShortVideo = "shortvideo"
 	//MsgTypeLocation 表示坐标消息[限接收]

officialaccount/officialaccount.go

@@ -93,6 +93,11 @@ func (officialAccount *OfficialAccount) GetTemplate() *message.Template {
 	return message.NewTemplate(officialAccount.ctx)
 }
 
+// GetCustomerMessageManager 客服消息接口
+func (officialAccount *OfficialAccount) GetCustomerMessageManager() *message.Manager {
+	return message.NewMessageManager(officialAccount.ctx)
+}
+
 // GetDevice 获取智能设备的实例
 func (officialAccount *OfficialAccount) GetDevice() *device.Device {
 	return device.NewDevice(officialAccount.ctx)