SQUASHME update db error names

internal/database/manager.go

@@ -24,10 +24,10 @@ type DB struct {
 }
 
 var (
-	ErrDatabaseNotInitialized     = errors.New("database not initialized")
+	ErrNotInitialized     = errors.New("database not initialized")
-	ErrDatabaseAlreadyInitialized = errors.New("database already initialized")
+	ErrAlreadyInitialized = errors.New("database already initialized")
-	ErrDatabaseSchemaOutdated     = errors.New("database schema needs updating")
+	ErrSchemaOutdated     = errors.New("database schema needs updating")
-	ErrDatabaseSchemaUnsupported  = errors.New("database schema is too new for the server")
+	ErrSchemaUnsupported  = errors.New("database schema is too new for the server")
 	ErrMigrationFailed    = errors.New("migration failed")
 )
 
@@ -66,7 +66,7 @@ func (db *DB) Close() error {
 func (db *DB) Initialize(schemaPath string) error {
 	err := db.CheckInitialized()
 	if err == nil {
-		return ErrDatabaseAlreadyInitialized
+		return ErrAlreadyInitialized
 	}
 
 	currentSchema := filepath.Join(schemaPath, "current.sql")
@@ -92,7 +92,7 @@ func (db *DB) CheckInitialized() error {
 	}
 
 	if count == 0 {
-		return ErrDatabaseNotInitialized
+		return ErrNotInitialized
 	}
 	return nil
 }
@@ -128,9 +128,9 @@ func (db *DB) CheckSchemaVersion() error {
 		return err
 	}
 	if version_ < version.SchemaVersion {
-		return ErrDatabaseSchemaOutdated
+		return ErrSchemaOutdated
 	} else if version_ > version.SchemaVersion {
-		return ErrDatabaseSchemaUnsupported
+		return ErrSchemaUnsupported
 	}
 	return nil
 }