feat: option to sync lookml dashboard on import_lookml if it exists a…

…lready (#196)

lib/gzr/commands/dashboard.rb

@@ -104,6 +104,8 @@ def rm(id)
                            desc: 'Unlink the new user defined dashboard from the LookML dashboard'
       method_option :force,  type: :boolean,
                            desc: 'Overwrite a dashboard with the same name in the target folder'
+      method_option :sync,  type: :boolean,
+                           desc: 'If linked dashboard already exists, sync it with LookML dashboard'
       def import_lookml(dashboard_id, target_folder_id)
         if options[:help]
           invoke :help, ['import_lookml']

lib/gzr/commands/dashboard/import_lookml.rb

@@ -49,12 +49,19 @@ def execute(input: $stdin, output: $stdout)
               matching_title = false
             end
 
-            if matching_title
+            if matching_title && !(matching_title.first[:lookml_link_id] == @dashboard_id)
               raise Gzr::CLI::Error, "Dashboard #{dash[:title]} already exists in folder #{@target_folder_id}\nUse --force if you want to overwrite it" unless @options[:force]
               say_ok "Deleting existing dashboard #{matching_title.first[:id]} #{matching_title.first[:title]} in folder #{@target_folder_id}", output: output
               update_dashboard(matching_title.first[:id],{:deleted=>true})
             end
 
+            if matching_title && (matching_title.first[:lookml_link_id] == @dashboard_id)
+              raise Gzr::CLI::Error, "Linked Dashboard #{dash[:title]} already exists in folder #{@target_folder_id}\nUse --sync if you want to synchronize it" unless @options[:sync]
+              say_ok "Syncing existing dashboard #{matching_title.first[:id]} #{matching_title.first[:title]} in folder #{@target_folder_id}", output: output
+              output.puts sync_lookml_dashboard(@dashboard_id)
+              return
+            end
+
             new_dash = import_lookml_dashboard(@dashboard_id,@target_folder_id)
 
             if @options[:unlink]