Create Zip File

WorkerUtils.kt

/**
 * Create ZIP file and returns the Uri for the zip file
 *
 * @param context Application Context
 * @param files File Paths to be Zipped
 * @param fileName ZIP File Name
 *
 * @return Uri for zip file
 * @throws FileNotFoundException Throws if zip file cannot be found
 */
@Throws(FileNotFoundException::class)
internal fun createZipFile(context: Context, files: List<Uri>, directoryName: String, fileName: String): Uri {
    val outputDir = File(context.filesDir, "$OUTPUT_PATH/$directoryName")
    val outputFile = File(outputDir, fileName)

    try {
        ZipOutputStream(BufferedOutputStream(FileOutputStream(outputFile))).use { out ->
            for (file in files) {
                val path = file.path
                val fi = FileInputStream(path)
                BufferedInputStream(fi).use {
                    val entry = ZipEntry(path.substring(path.lastIndexOf("/")))
                    out.putNextEntry(entry)
                    it.copyTo(out, BUFFER)
                }
            }
        }
    } catch (e: Exception) {
        logStackTrace(e)
    }

    return Uri.fromFile(outputFile)
}