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// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
package api4
import (
"net/http"
"github.com/mattermost/mattermost-server/model"
)
func (api *API) InitReaction() {
api.BaseRoutes.Reactions.Handle("", api.ApiSessionRequired(saveReaction)).Methods("POST")
api.BaseRoutes.Post.Handle("/reactions", api.ApiSessionRequired(getReactions)).Methods("GET")
api.BaseRoutes.ReactionByNameForPostForUser.Handle("", api.ApiSessionRequired(deleteReaction)).Methods("DELETE")
}
func saveReaction(c *Context, w http.ResponseWriter, r *http.Request) {
reaction := model.ReactionFromJson(r.Body)
if reaction == nil {
c.SetInvalidParam("reaction")
return
}
if len(reaction.UserId) != 26 || len(reaction.PostId) != 26 || len(reaction.EmojiName) == 0 || len(reaction.EmojiName) > model.EMOJI_NAME_MAX_LENGTH {
c.Err = model.NewAppError("saveReaction", "api.reaction.save_reaction.invalid.app_error", nil, "", http.StatusBadRequest)
return
}
if reaction.UserId != c.Session.UserId {
c.Err = model.NewAppError("saveReaction", "api.reaction.save_reaction.user_id.app_error", nil, "", http.StatusForbidden)
return
}
if !c.App.SessionHasPermissionToChannelByPost(c.Session, reaction.PostId, model.PERMISSION_ADD_REACTION) {
c.SetPermissionError(model.PERMISSION_ADD_REACTION)
return
}
reaction, err := c.App.SaveReactionForPost(reaction)
if err != nil {
c.Err = err
return
}
w.Write([]byte(reaction.ToJson()))
}
func getReactions(c *Context, w http.ResponseWriter, r *http.Request) {
c.RequirePostId()
if c.Err != nil {
return
}
if !c.App.SessionHasPermissionToChannelByPost(c.Session, c.Params.PostId, model.PERMISSION_READ_CHANNEL) {
c.SetPermissionError(model.PERMISSION_READ_CHANNEL)
return
}
reactions, err := c.App.GetReactionsForPost(c.Params.PostId)
if err != nil {
c.Err = err
return
}
w.Write([]byte(model.ReactionsToJson(reactions)))
}
func deleteReaction(c *Context, w http.ResponseWriter, r *http.Request) {
c.RequireUserId()
if c.Err != nil {
return
}
c.RequirePostId()
if c.Err != nil {
return
}
c.RequireEmojiName()
if c.Err != nil {
return
}
if !c.App.SessionHasPermissionToChannelByPost(c.Session, c.Params.PostId, model.PERMISSION_REMOVE_REACTION) {
c.SetPermissionError(model.PERMISSION_REMOVE_REACTION)
return
}
if c.Params.UserId != c.Session.UserId && !c.App.SessionHasPermissionTo(c.Session, model.PERMISSION_REMOVE_OTHERS_REACTIONS) {
c.SetPermissionError(model.PERMISSION_REMOVE_OTHERS_REACTIONS)
return
}
reaction := &model.Reaction{
UserId: c.Params.UserId,
PostId: c.Params.PostId,
EmojiName: c.Params.EmojiName,
}
err := c.App.DeleteReactionForPost(reaction)
if err != nil {
c.Err = err
return
}
ReturnStatusOK(w)
}
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