implement POST /emoji for apiV4 (#5868)

api4/emoji.go

@@ -0,0 +1,72 @@
+// Copyright (c) 2017 Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package api4
+
+import (
+	"net/http"
+	"strings"
+
+	l4g "github.com/alecthomas/log4go"
+
+	"github.com/mattermost/platform/app"
+	"github.com/mattermost/platform/einterfaces"
+	"github.com/mattermost/platform/model"
+	"github.com/mattermost/platform/utils"
+)
+
+func InitEmoji() {
+	l4g.Debug(utils.T("api.emoji.init.debug"))
+
+	BaseRoutes.Emojis.Handle("", ApiSessionRequired(createEmoji)).Methods("POST")
+}
+
+func createEmoji(c *Context, w http.ResponseWriter, r *http.Request) {
+	if !*utils.Cfg.ServiceSettings.EnableCustomEmoji {
+		c.Err = model.NewLocAppError("createEmoji", "api.emoji.disabled.app_error", nil, "")
+		c.Err.StatusCode = http.StatusNotImplemented
+		return
+	}
+
+	if emojiInterface := einterfaces.GetEmojiInterface(); emojiInterface != nil &&
+		!emojiInterface.CanUserCreateEmoji(c.Session.Roles, c.Session.TeamMembers) {
+		c.Err = model.NewLocAppError("createEmoji", "api.emoji.create.permissions.app_error", nil, "user_id="+c.Session.UserId)
+		c.Err.StatusCode = http.StatusUnauthorized
+		return
+	}
+
+	if len(utils.Cfg.FileSettings.DriverName) == 0 {
+		c.Err = model.NewLocAppError("createEmoji", "api.emoji.storage.app_error", nil, "")
+		c.Err.StatusCode = http.StatusNotImplemented
+		return
+	}
+
+	if r.ContentLength > app.MaxEmojiFileSize {
+		c.Err = model.NewLocAppError("createEmoji", "api.emoji.create.too_large.app_error", nil, "")
+		c.Err.StatusCode = http.StatusRequestEntityTooLarge
+		return
+	}
+
+	if err := r.ParseMultipartForm(app.MaxEmojiFileSize); err != nil {
+		c.Err = model.NewLocAppError("createEmoji", "api.emoji.create.parse.app_error", nil, err.Error())
+		c.Err.StatusCode = http.StatusBadRequest
+		return
+	}
+
+	m := r.MultipartForm
+	props := m.Value
+
+	emoji := model.EmojiFromJson(strings.NewReader(props["emoji"][0]))
+	if emoji == nil {
+		c.SetInvalidParam("createEmoji")
+		return
+	}
+
+	newEmoji, err := app.CreateEmoji(c.Session.UserId, emoji, m)
+	if err != nil {
+		c.Err = err
+		return
+	} else {
+		w.Write([]byte(newEmoji.ToJson()))
+	}
+}