Login Hooks (#9177)

Tests; gofmt

plugin/hooks.go

@@ -30,6 +30,8 @@ const (
 	UserHasLeftTeamId       = 12
 	ChannelHasBeenCreatedId = 13
 	FileWillBeUploadedId    = 14
+	UserWillLogInId         = 15
+	UserHasLoggedInId       = 16
 	TotalHooksId            = iota
 )
 
@@ -119,6 +121,13 @@ type Hooks interface {
 	// If actor is not nil, the user was removed from the team by the actor.
 	UserHasLeftTeam(c *Context, teamMember *model.TeamMember, actor *model.User)
 
+	// UserWillLogIn before the login of the user is returned. Returning a non empty string will reject the login event.
+	// If you don't need to reject the login event, see UserHasLoggedIn
+	UserWillLogIn(c *Context, user *model.User) string
+
+	// UserHasLoggedIn is invoked after a user has logged in.
+	UserHasLoggedIn(c *Context, user *model.User)
+
 	// FileWillBeUploaded is invoked when a file is uploaded, but before it is committed to backing store.
 	// Read from file to retrieve the body of the uploaded file. You may modify the body of the file by writing to output.
 	// Returned FileInfo will be used instead of input FileInfo. Return nil to reject the file upload and include a text reason as the second argument.