Use mattermost v5 module (#1192)

vendor/github.com/mattermost/mattermost-server/v5/model/websocket_request.go

@@ -0,0 +1,35 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+
+	goi18n "github.com/mattermost/go-i18n/i18n"
+)
+
+// WebSocketRequest represents a request made to the server through a websocket.
+type WebSocketRequest struct {
+	// Client-provided fields
+	Seq    int64                  `json:"seq"`    // A counter which is incremented for every request made.
+	Action string                 `json:"action"` // The action to perform for a request. For example: get_statuses, user_typing.
+	Data   map[string]interface{} `json:"data"`   // The metadata for an action.
+
+	// Server-provided fields
+	Session Session              `json:"-"`
+	T       goi18n.TranslateFunc `json:"-"`
+	Locale  string               `json:"-"`
+}
+
+func (o *WebSocketRequest) ToJson() string {
+	b, _ := json.Marshal(o)
+	return string(b)
+}
+
+func WebSocketRequestFromJson(data io.Reader) *WebSocketRequest {
+	var o *WebSocketRequest
+	json.NewDecoder(data).Decode(&o)
+	return o
+}