GH-15624: Added plugin hooks for ReationHasBeenAdded and ReactionHasBeenRemoved (#15765)

plugin/hooks.go

@@ -15,25 +15,27 @@ import (
 // Feel free to add more, but do not change existing assignments. Follow the naming convention of
 // <HookName>Id as the autogenerated glue code depends on that.
 const (
-	OnActivateId            = 0
-	OnDeactivateId          = 1
-	ServeHTTPId             = 2
-	OnConfigurationChangeId = 3
-	ExecuteCommandId        = 4
-	MessageWillBePostedId   = 5
-	MessageWillBeUpdatedId  = 6
-	MessageHasBeenPostedId  = 7
-	MessageHasBeenUpdatedId = 8
-	UserHasJoinedChannelId  = 9
-	UserHasLeftChannelId    = 10
-	UserHasJoinedTeamId     = 11
-	UserHasLeftTeamId       = 12
-	ChannelHasBeenCreatedId = 13
-	FileWillBeUploadedId    = 14
-	UserWillLogInId         = 15
-	UserHasLoggedInId       = 16
-	UserHasBeenCreatedId    = 17
-	TotalHooksId            = iota
+	OnActivateId             = 0
+	OnDeactivateId           = 1
+	ServeHTTPId              = 2
+	OnConfigurationChangeId  = 3
+	ExecuteCommandId         = 4
+	MessageWillBePostedId    = 5
+	MessageWillBeUpdatedId   = 6
+	MessageHasBeenPostedId   = 7
+	MessageHasBeenUpdatedId  = 8
+	UserHasJoinedChannelId   = 9
+	UserHasLeftChannelId     = 10
+	UserHasJoinedTeamId      = 11
+	UserHasLeftTeamId        = 12
+	ChannelHasBeenCreatedId  = 13
+	FileWillBeUploadedId     = 14
+	UserWillLogInId          = 15
+	UserHasLoggedInId        = 16
+	UserHasBeenCreatedId     = 17
+	ReactionHasBeenAddedId   = 18
+	ReactionHasBeenRemovedId = 19
+	TotalHooksId             = iota
 )
 
 const (
@@ -191,4 +193,20 @@ type Hooks interface {
 	//
 	// Minimum server version: 5.2
 	FileWillBeUploaded(c *Context, info *model.FileInfo, file io.Reader, output io.Writer) (*model.FileInfo, string)
+
+	// ReactionHasBeenAdded is invoked after the reaction has been committed to the database.
+	//
+	// Note that this method will be called for reactions added by plugins, including the plugin that
+	// added the reaction.
+	//
+	// Minimum server version: 5.30
+	ReactionHasBeenAdded(c *Context, reaction *model.Reaction)
+
+	// ReactionHasBeenRemoved is invoked after the removal of the reaction has been committed to the database.
+	//
+	// Note that this method will be called for reactions removed by plugins, including the plugin that
+	// removed the reaction.
+	//
+	// Minimum server version: 5.30
+	ReactionHasBeenRemoved(c *Context, reaction *model.Reaction)
 }