auth-signingin.swift

public func signIn(request: HTTPRequest, response: HTTPResponse) {
    do {
        let signIn = try request.getObjectFromRequest(SignInDto.self)

        guard let user = try self.usersService.get(byEmail: signIn.email) else {
            return response.sendNotFoundError()
        }

        let password = try signIn.password.generateHash(salt: user.salt)
        if password != user.password {
            return response.sendNotFoundError()
        }

        let tokenDto = try self.prepareToken(user: user)
        return response.sendJson(tokenDto)
    }
    catch let error where error is DecodingError || error is RequestError {
        response.sendBadRequestError()
    }
    catch let error as ValidationsError {
        response.sendValidationsError(error: error)
    }
    catch {
        response.sendInternalServerError(error: error)
    }
}