auth-prepare-token.swift

private func prepareToken(user: User) throws -> JwtTokenResponseDto {

    let payload = [
        ClaimsNames.name.rawValue           : user.email,
        ClaimsNames.roles.rawValue          : user.getRolesNames(),
        ClaimsNames.issuer.rawValue         : self.configuration.issuer,
        ClaimsNames.issuedAt.rawValue       : Date().timeIntervalSince1970,
        ClaimsNames.expiration.rawValue     : Date().addingTimeInterval(36000).timeIntervalSince1970
    ] as [String : Any]

    guard let jwt = JWTCreator(payload: payload) else {
        throw PrepareTokenError()
    }

    let token = try jwt.sign(alg: .hs256, key: self.configuration.secret)

    let tokenDto = JwtTokenResponseDto(token: token)
    return tokenDto
}