@backstageai/common/presentation.js

Common code for Backstage AI services

const enums = require("./enums");

const API_VERSION = "1.0.0";
const headers = {
  "x-api-version": API_VERSION,
  "Access-Control-Allow-Origin": "*",
  "Access-Control-Allow-Credentials": "true", // Ensure it's a string if using API Gateway
  "Access-Control-Allow-Methods": "OPTIONS, GET, POST, PUT, DELETE",
  "Access-Control-Allow-Headers": "Content-Type, Authorization",
  "Content-Type": "application/json",
};

// 200
module.exports.ok = function (data) {
  const lambdaProxyResponse = {
    statusCode: enums.HTTP_STATUS.OK,
    body: JSON.stringify(data),
    headers: headers,
  };
  return lambdaProxyResponse;
};

// 500
module.exports.error = function (error) {
  const lambdaProxyResponse = {
    statusCode: enums.HTTP_STATUS.SERVER_ERROR,
    body: JSON.stringify({ message: error }),
    headers: headers,
  };
  return lambdaProxyResponse;
};

// 401
module.exports.unAuthorized = function (message) {
  const lambdaProxyResponse = {
    statusCode: enums.HTTP_STATUS.UNAUTHORIZED,
    body: JSON.stringify({ message: message || "Unauthorized" }), // Matches response from AWS.
    headers: headers,
  };
  return lambdaProxyResponse;
};

// 402
module.exports.paymentRequired = function (message) {
  const lambdaProxyResponse = {
    statusCode: enums.HTTP_STATUS.PAYMENT_REQUIRED,
    body: JSON.stringify({ message: message || "Payment required" }),
    headers: headers,
  };
  return lambdaProxyResponse;
};

// 403
module.exports.forbidden = function (message) {
  const lambdaProxyResponse = {
    statusCode: enums.HTTP_STATUS.FORBIDDEN,
    body: JSON.stringify({ message: message || "Forbidden." }),
    headers: headers,
  };
  return lambdaProxyResponse;
};

// 418
module.exports.refreshTokenInvalid = function () {
  const lambdaProxyResponse = {
    statusCode: enums.HTTP_STATUS.REFRESH_TOKEN_INVALID,
    body: JSON.stringify({ message: "Token is invalid" }),
    headers: headers,
  };
  return lambdaProxyResponse;
};

// 409
module.exports.conflict = function (message) {
  const lambdaProxyResponse = {
    statusCode: enums.HTTP_STATUS.CONFLICT,
    body: JSON.stringify({ message: message || "Conflict" }),
    headers: headers,
  };
  return lambdaProxyResponse;
};

// 400
module.exports.badRequest = function (message, data) {
  const lambdaProxyResponse = {
    statusCode: enums.HTTP_STATUS.BAD_REQUEST,
    body: JSON.stringify({ message: message || "Bad request", data }),
    headers: headers,
  };
  return lambdaProxyResponse;
};

// 404
module.exports.notFound = function (message) {
  const lambdaProxyResponse = {
    statusCode: enums.HTTP_STATUS.NOT_FOUND,
    body: JSON.stringify({ message: message || "Not found" }),
    headers: headers,
  };
  return lambdaProxyResponse;
};

// 503
module.exports.serviceUnavailable = function () {
  const lambdaProxyResponse = {
    statusCode: enums.HTTP_STATUS.SERVICE_UNAVAILABLE,
    body: JSON.stringify({
      message:
        "Service is currently undergoing maintenance and is not available. Check back soon.",
    }),
    headers: headers,
  };
  return lambdaProxyResponse;
};