var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
  for (var name in all)
    __defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
  if (from && typeof from === "object" || typeof from === "function") {
    for (let key of __getOwnPropNames(from))
      if (!__hasOwnProp.call(to, key) && key !== except)
        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
  }
  return to;
};
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
var throttlingRetryStrategy_exports = {};
__export(throttlingRetryStrategy_exports, {
  isThrottlingRetryResponse: () => isThrottlingRetryResponse,
  throttlingRetryStrategy: () => throttlingRetryStrategy
});
module.exports = __toCommonJS(throttlingRetryStrategy_exports);
var import_helpers = require("../util/helpers.js");
const RetryAfterHeader = "Retry-After";
const AllRetryAfterHeaders = ["retry-after-ms", "x-ms-retry-after-ms", RetryAfterHeader];
function getRetryAfterInMs(response) {
  if (!(response && [429, 503].includes(response.status))) return void 0;
  try {
    for (const header of AllRetryAfterHeaders) {
      const retryAfterValue = (0, import_helpers.parseHeaderValueAsNumber)(response, header);
      if (retryAfterValue === 0 || retryAfterValue) {
        const multiplyingFactor = header === RetryAfterHeader ? 1e3 : 1;
        return retryAfterValue * multiplyingFactor;
      }
    }
    const retryAfterHeader = response.headers.get(RetryAfterHeader);
    if (!retryAfterHeader) return;
    const date = Date.parse(retryAfterHeader);
    const diff = date - Date.now();
    return Number.isFinite(diff) ? Math.max(0, diff) : void 0;
  } catch {
    return void 0;
  }
}
function isThrottlingRetryResponse(response) {
  return Number.isFinite(getRetryAfterInMs(response));
}
function throttlingRetryStrategy() {
  return {
    name: "throttlingRetryStrategy",
    retry({ response }) {
      const retryAfterInMs = getRetryAfterInMs(response);
      if (!Number.isFinite(retryAfterInMs)) {
        return { skipStrategy: true };
      }
      return {
        retryAfterInMs
      };
    }
  };
}
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
  isThrottlingRetryResponse,
  throttlingRetryStrategy
});
//# sourceMappingURL=throttlingRetryStrategy.js.map
