Merge pull request #10 from WZ/debug/socket-mode-event-log

debug: log all socket mode events to diagnose member_joined

Author: WZ

slack.go

@@ -48,6 +48,7 @@ func StartSlackBot(cfg Config, db *sql.DB, api *slack.Client) error {
 
 	go func() {
 		for evt := range client.Events {
+			log.Printf("socket-mode event type=%s", evt.Type)
 			switch evt.Type {
 			case socketmode.EventTypeSlashCommand:
 				cmd, ok := evt.Data.(slack.SlashCommand)