AccessLogger a Logger middleware that will write the access logs to stdout or file.

Auth authenticate users.

ContextWithAcceptLanguage store accept language into c.Request.Context.

CORS creates a new CORS Gin middleware.

ErrResp response the localized message according to the set key.

GenerateTokens generate access token and refresh token.

RespInternal gin response internal server error with msg.

SkipAccessLog is a flag to skip access log.