big refactoring

bot/mutex.go

@@ -1,24 +0,0 @@
-package bot
-
-import (
-	"sync"
-)
-
-func (b *Bot) lock(key string) {
-	_, ok := b.mu[key]
-	if !ok {
-		b.mu[key] = &sync.Mutex{}
-	}
-
-	b.mu[key].Lock()
-}
-
-func (b *Bot) unlock(key string) {
-	_, ok := b.mu[key]
-	if !ok {
-		return
-	}
-
-	b.mu[key].Unlock()
-	delete(b.mu, key)
-}