/*!
 * @license
 * Copyright Squiz Australia Pty Ltd. All Rights Reserved.
 */

/**
 * Retry configuration with exponential backoff delays in seconds.
 * Using SQS message timer limits (max 15 minutes = 900 seconds).
 *
 * Delays: 30s, 1min, 2min, 5min, 10min, then 15min thereafter.
 */
export const RETRY_DELAYS_SECONDS: ReadonlyArray<number> = [30, 60, 120, 300, 600, 900, 900, 900, 900, 900];

/**
 * Maximum number of retry attempts for container start failures.
 */
export const MAX_RETRY_ATTEMPTS = RETRY_DELAYS_SECONDS.length;

/**
 * Maximum number of total attempts for opted-in job code failures.
 * This allows the initial attempt plus 3 retries.
 */
export const MAX_JOB_CODE_RETRY_ATTEMPTS = 4;

/**
 * After a job has attempted to be started this number of times alerts will start to be sent.
 */
export const ALERT_AFTER_ATTEMPTS = 2;

/**
 * Get the delay in seconds for a given retry attempt.
 * @param retryAttempt - The current retry attempt (0-indexed)
 * @returns The delay in seconds for this retry attempt
 */
export const getRetryDelaySeconds = (retryAttempt: number): number => {
  if (retryAttempt >= RETRY_DELAYS_SECONDS.length) {
    return RETRY_DELAYS_SECONDS[RETRY_DELAYS_SECONDS.length - 1];
  }
  return RETRY_DELAYS_SECONDS[retryAttempt];
};