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// Copyright (c) 2016 Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
package api
import (
"net/http"
l4g "github.com/alecthomas/log4go"
"github.com/gorilla/mux"
"github.com/mattermost/platform/app"
"github.com/mattermost/platform/model"
"github.com/mattermost/platform/utils"
)
func InitReaction() {
l4g.Debug(utils.T("api.reaction.init.debug"))
BaseRoutes.NeedPost.Handle("/reactions/save", ApiUserRequired(saveReaction)).Methods("POST")
BaseRoutes.NeedPost.Handle("/reactions/delete", ApiUserRequired(deleteReaction)).Methods("POST")
BaseRoutes.NeedPost.Handle("/reactions", ApiUserRequired(listReactions)).Methods("GET")
}
func saveReaction(c *Context, w http.ResponseWriter, r *http.Request) {
reaction := model.ReactionFromJson(r.Body)
if reaction == nil {
c.SetInvalidParam("saveReaction", "reaction")
return
}
if reaction.UserId != c.Session.UserId {
c.Err = model.NewLocAppError("saveReaction", "api.reaction.save_reaction.user_id.app_error", nil, "")
c.Err.StatusCode = http.StatusForbidden
return
}
params := mux.Vars(r)
channelId := params["channel_id"]
if len(channelId) != 26 {
c.SetInvalidParam("saveReaction", "channelId")
return
}
if !app.SessionHasPermissionToChannel(c.Session, channelId, model.PERMISSION_READ_CHANNEL) {
c.SetPermissionError(model.PERMISSION_READ_CHANNEL)
return
}
postId := params["post_id"]
if len(postId) != 26 || postId != reaction.PostId {
c.SetInvalidParam("saveReaction", "postId")
return
}
var post *model.Post
if result := <-app.Srv.Store.Post().Get(reaction.PostId); result.Err != nil {
c.Err = result.Err
return
} else if post = result.Data.(*model.PostList).Posts[postId]; post.ChannelId != channelId {
c.Err = model.NewLocAppError("saveReaction", "api.reaction.save_reaction.mismatched_channel_id.app_error",
nil, "channelId="+channelId+", post.ChannelId="+post.ChannelId+", postId="+postId)
c.Err.StatusCode = http.StatusBadRequest
return
}
if result := <-app.Srv.Store.Reaction().Save(reaction); result.Err != nil {
c.Err = result.Err
return
} else {
go sendReactionEvent(model.WEBSOCKET_EVENT_REACTION_ADDED, channelId, reaction, post)
reaction := result.Data.(*model.Reaction)
app.InvalidateCacheForReactions(reaction.PostId)
w.Write([]byte(reaction.ToJson()))
}
}
func deleteReaction(c *Context, w http.ResponseWriter, r *http.Request) {
reaction := model.ReactionFromJson(r.Body)
if reaction == nil {
c.SetInvalidParam("deleteReaction", "reaction")
return
}
if reaction.UserId != c.Session.UserId {
c.Err = model.NewLocAppError("deleteReaction", "api.reaction.delete_reaction.user_id.app_error", nil, "")
c.Err.StatusCode = http.StatusForbidden
return
}
params := mux.Vars(r)
channelId := params["channel_id"]
if len(channelId) != 26 {
c.SetInvalidParam("deleteReaction", "channelId")
return
}
if !app.SessionHasPermissionToChannel(c.Session, channelId, model.PERMISSION_READ_CHANNEL) {
c.SetPermissionError(model.PERMISSION_READ_CHANNEL)
return
}
postId := params["post_id"]
if len(postId) != 26 || postId != reaction.PostId {
c.SetInvalidParam("deleteReaction", "postId")
return
}
var post *model.Post
if result := <-app.Srv.Store.Post().Get(reaction.PostId); result.Err != nil {
c.Err = result.Err
return
} else if post = result.Data.(*model.PostList).Posts[postId]; post.ChannelId != channelId {
c.Err = model.NewLocAppError("deleteReaction", "api.reaction.delete_reaction.mismatched_channel_id.app_error",
nil, "channelId="+channelId+", post.ChannelId="+post.ChannelId+", postId="+postId)
c.Err.StatusCode = http.StatusBadRequest
return
}
if result := <-app.Srv.Store.Reaction().Delete(reaction); result.Err != nil {
c.Err = result.Err
return
} else {
go sendReactionEvent(model.WEBSOCKET_EVENT_REACTION_REMOVED, channelId, reaction, post)
app.InvalidateCacheForReactions(reaction.PostId)
ReturnStatusOK(w)
}
}
func sendReactionEvent(event string, channelId string, reaction *model.Reaction, post *model.Post) {
// send out that a reaction has been added/removed
message := model.NewWebSocketEvent(event, "", channelId, "", nil)
message.Add("reaction", reaction.ToJson())
app.Publish(message)
// THe post is always modified since the UpdateAt always changes
app.InvalidateCacheForChannelPosts(post.ChannelId)
post.HasReactions = true
post.UpdateAt = model.GetMillis()
umessage := model.NewWebSocketEvent(model.WEBSOCKET_EVENT_POST_EDITED, "", channelId, "", nil)
umessage.Add("post", post.ToJson())
app.Publish(umessage)
}
func listReactions(c *Context, w http.ResponseWriter, r *http.Request) {
params := mux.Vars(r)
channelId := params["channel_id"]
if len(channelId) != 26 {
c.SetInvalidParam("deletePost", "channelId")
return
}
postId := params["post_id"]
if len(postId) != 26 {
c.SetInvalidParam("listReactions", "postId")
return
}
pchan := app.Srv.Store.Post().Get(postId)
if !app.SessionHasPermissionToChannel(c.Session, channelId, model.PERMISSION_READ_CHANNEL) {
c.SetPermissionError(model.PERMISSION_READ_CHANNEL)
return
}
if result := <-pchan; result.Err != nil {
c.Err = result.Err
return
} else if post := result.Data.(*model.PostList).Posts[postId]; post.ChannelId != channelId {
c.Err = model.NewLocAppError("listReactions", "api.reaction.list_reactions.mismatched_channel_id.app_error",
nil, "channelId="+channelId+", post.ChannelId="+post.ChannelId+", postId="+postId)
c.Err.StatusCode = http.StatusBadRequest
return
}
if result := <-app.Srv.Store.Reaction().GetForPost(postId, true); result.Err != nil {
c.Err = result.Err
return
} else {
reactions := result.Data.([]*model.Reaction)
w.Write([]byte(model.ReactionsToJson(reactions)))
}
}
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