Formatting Numbers Locale

fun String.formatCreditCardNumber(): String {
    val delimiter = ' '
    return this.replace(".{4}(?!$)".toRegex(), "$0$delimiter")
}

fun Float.formatPriceFloat(): String {
    val isEnglish = Utils.getLang()
    val symbols = DecimalFormatSymbols(Locale.US)
    val decimalFormat = DecimalFormat("#,###.000",symbols)
    val output = if(isEnglish) decimalFormat.format(this) else
        decimalFormat.format(this).convertEnglishNumbersToArabic()
    return output
}

fun Float.formatPriceInt(): String {
    val isEnglish = Utils.getLang()
    val symbols = DecimalFormatSymbols(Locale.US)
    val decimalFormat = DecimalFormat("#,###",symbols)

    val output = if(isEnglish) decimalFormat.format(this.toInt()) else
        decimalFormat.format(this.toInt()).convertEnglishNumbersToArabic()
    return output
}

fun String.formatStringLocalized(): String {
    val isEnglish = Utils.getLang()
    val input = this.formatStringEnglish()
    if (isEnglish) return input
    else return input.convertEnglishNumbersToArabic()
}

//you need to use this workaround to avoid arabic comma in Numbers
//so you replace all english numbers with arabic numbers 
//https://stackoverflow.com/questions/34266789/arabic-number-in-arabic-text-in-android
fun String.convertEnglishNumbersToArabic(): String {
    return this.replace("1".toRegex(), "١").replace("2".toRegex(), "٢")
        .replace("3".toRegex(), "٣").replace("4".toRegex(), "٤")
        .replace("5".toRegex(), "٥").replace("6".toRegex(), "٦")
        .replace("7".toRegex(), "٧").replace("8".toRegex(), "٨")
        .replace("9".toRegex(), "٩").replace("0".toRegex(), "٠")
}

private fun String.formatStringEnglish(): String {
    val decimalFormat = NumberFormat.getNumberInstance(Locale.ENGLISH)
    val result = decimalFormat.format(this.toInt())
    return result
}
//*************************************************************

fun String.textOnly(): Boolean {
    //not allowed number arabic/english ,not allowed special chars
    return this.matches("^[^0-9\u0660-\u0669^~|<>{}¥€£@#&*+=()_\$\";.?!%]+$".toRegex())
}

fun String.digitsOnly(): Boolean {
    //arabic,english numbers only
    return this.matches("^[0-9\u0660-\u0669]+\$".toRegex())
}

fun String.alphaNumericOnly(): Boolean {
    //arabic & english => numbers & characters also no spaces allowed
    //this.matches("^(?=.*[\\u0660-\\u0669])(?=.*[\\u0621-\\u064A0]).{6,}\$".toRegex())
    return this.matches("^(?=.*[0-9])(?=.*[a-zA-Z]).{6,}\$".toRegex())
}

fun String.isArabicChars(): Boolean {
    //arabic characters and numbers
    return this.matches("^[\\u0621-\\u064A\\u0660-\\u0669 ]+\$".toRegex())
}

fun String.encodeBase64(): String {
    return Base64.encodeToString(toByteArray(), Base64.NO_WRAP)
}

fun String.decodeBase64(): String {
    return Base64.decode(this.toByteArray(), Base64.NO_WRAP).toString()
}

    @SuppressLint("SimpleDateFormat")
    fun calcDiffInDays(startDate: String, endDate: String): Long {
        //"2022-12-21 10:58:15"
        val dateFormat = SimpleDateFormat("yyyy-MM-dd HH:mm:ss")
        var startPackageDate: Long = 0
        var endPackageDate: Long = 0
        try {
            startPackageDate = dateFormat.parse(startDate)?.time ?: 0
            endPackageDate = dateFormat.parse(endDate)?.time ?: 0
        } catch (e: Exception) {
            e.printStackTrace()
        }
        var diffInMs = endPackageDate - startPackageDate
        diffInMs = if (diffInMs < 0) 0 else diffInMs
        val diffInDays = TimeUnit.MILLISECONDS.toDays(diffInMs)
        val diffInHours = TimeUnit.MILLISECONDS.toHours(diffInMs)
        val diffInMin = TimeUnit.MILLISECONDS.toMinutes(diffInMs)
        val diffInSec = TimeUnit.MILLISECONDS.toSeconds(diffInMs)
        val totalDifference = Math.ceil(diffInSec.toDouble() / (60.0 * 60.0 * 24.0))
        Log.e("TIMER", "diffTotal $totalDifference")
        Log.e("TIMER", "diffSec $diffInSec")
        return diffInDays
    }