@@ -13,6 +13,15 @@ const val THOUSAND = 1_000
1313const val MILLION = 1_000_000
1414const val BILLION = 1_000_000_000
1515
16+ /* *
17+ * A use case class responsible for formatting currency and cryptocurrency values based on user preferences.
18+ * It supports regular currency formatting with or without decimal places, as well as shortened formats
19+ * (e.g., "1k", "1m"). For cryptocurrency, it formats up to 9 decimal places and removes unnecessary trailing zeros.
20+ *
21+ * @property features Provides feature toggles to customize app behavior.
22+ * @property devicePreferences Manages user-specific preferences for locale and other device settings.
23+ * @property context Application context, used for feature check and resource access.
24+ */
1625class FormatMoneyUseCase @Inject constructor(
1726 private val features : Features ,
1827 private val devicePreferences : DevicePreferences ,
@@ -23,25 +32,69 @@ class FormatMoneyUseCase @Inject constructor(
2332 private val withoutDecimalFormatter = DecimalFormat (" ###,###" DecimalFormatSymbols (locale))
2433 private val withDecimalFormatter = DecimalFormat (" ###,###.00" DecimalFormatSymbols (locale))
2534 private val shortenAmountFormatter = DecimalFormat (" ###,###.##" DecimalFormatSymbols (locale))
35+ private val cryptoFormatter =
36+ DecimalFormat (" ###,###,##0.${" 0" 9 )} " DecimalFormatSymbols (locale))
2637
27- suspend fun format (value : Double , shortenAmount : Boolean ): String {
28- if (abs(value) >= THOUSAND && shortenAmount) {
29- val result = if (abs(value) >= BILLION ) {
38+ /* *
39+ * Formats a currency or cryptocurrency amount based on the input parameters.
40+ *
41+ * @param value The numeric value to format.
42+ * @param shortenAmount Flag to indicate if the amount should be shortened (e.g., "1k" for 1,000).
43+ * @param isCrypto Flag to indicate if the value is a cryptocurrency, enabling up to 9 decimal places.
44+ * @return The formatted string representation of the value.
45+ */
46+ suspend fun format (value : Double , shortenAmount : Boolean , isCrypto : Boolean = false): String {
47+ val result = if (isCrypto) {
48+ formatCrypto(value)
49+ } else if (abs(value) >= THOUSAND && shortenAmount) {
50+ if (abs(value) >= BILLION ) {
3051 " ${shortenAmountFormatter.format(value / BILLION )} b"
3152 } else if (abs(value) >= MILLION ) {
3253 " ${shortenAmountFormatter.format(value / MILLION )} m"
3354 } else {
3455 " ${shortenAmountFormatter.format(value / THOUSAND )} k"
3556 }
36- return result
3757 } else {
3858 val showDecimalPoint = features.showDecimalNumber.isEnabled(context)
3959
4060 val formatter = when (showDecimalPoint) {
4161 true -> withDecimalFormatter
4262 false -> withoutDecimalFormatter
4363 }
44- return formatter.format(value)
64+ formatter.format(value)
4565 }
66+
67+ return result
68+ }
69+
70+ /* *
71+ * Formats a cryptocurrency value with up to 9 decimal places, removing unnecessary trailing zeros.
72+ *
73+ * @param value The cryptocurrency value to format.
74+ * @return The formatted cryptocurrency value as a string.
75+ */
76+ private fun formatCrypto (value : Double ): String {
77+ val result = cryptoFormatter.format(value)
78+ return when {
79+ result.lastOrNull() == localDecimalSeparator().firstOrNull() -> {
80+ val newResult = result.dropLast(1 )
81+ newResult.ifEmpty { " 0"
82+ }
83+
84+ result.isEmpty() -> {
85+ " 0"
86+ }
87+
88+ else -> result
89+ }
90+ }
91+
92+ /* *
93+ * Retrieves the local decimal separator based on the user's locale.
94+ *
95+ * @return The decimal separator as a string.
96+ */
97+ private fun localDecimalSeparator (): String {
98+ return DecimalFormatSymbols (locale).decimalSeparator.toString()
4699 }
47- }
100+ }
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