/**

* @module OneDriveLargeFileUploadTaskUtil

*/

/**

* Default value for the rangeSize

* Recommended size is between 5 - 10 MB {@link https://developer.microsoft.com/en-us/graph/docs/api-reference/v1.0/api/driveitem_createuploadsession#best-practices}

*/

const DEFAULT_FILE_SIZE: number = 5 * 1024 * 1024;

/**

* Rounds off the given value to a multiple of 320 KB

* @param {number} value - The value

* @return The rounded off value

*/

const roundTo320KB = (value: number): number => {

if (value > (320 * 1024)) {

value = Math.floor(value / (320 * 1024)) * 320 * 1024;

}

return value;

}

/**

* Get the valid rangeSize for a file slicing (validity is based on the constrains mentioned in here {@link https://developer.microsoft.com/en-us/graph/docs/api-reference/v1.0/api/driveitem_createuploadsession#upload-bytes-to-the-upload-session})

*

* @param {number} [rangeSize = DEFAULT_FILE_SIZE] - The rangeSize value.

* @return The valid rangeSize

*/

export const getValidRangeSize = (rangeSize: number = DEFAULT_FILE_SIZE): number => {

const sixtyMB = 60 * 1024 * 1024;

if (rangeSize > sixtyMB) {

rangeSize = sixtyMB;

}

return roundTo320KB(rangeSize);

}