[WIP] Star refs

submodules/TelegramPresentationData/Sources/NumericFormat.swift

@@ -1,5 +1,6 @@
 import Foundation
 import PresentationStrings
+import TelegramCore
 
 public func compactNumericCountString(_ count: Int, decimalSeparator: String = ".") -> String {
     if count >= 1000 * 1000 {
@@ -38,6 +39,28 @@ public func presentationStringsFormattedNumber(_ count: Int32, _ groupingSeparat
     }
 }
 
+public func presentationStringsFormattedNumber(_ starsAmount: StarsAmount, _ groupingSeparator: String = "") -> String {
+    if starsAmount.nanos == 0 {
+        let count = Int32(starsAmount.value)
+        let string = "\(count)"
+        if groupingSeparator.isEmpty || abs(count) < 1000 {
+            return string
+        } else {
+            var groupedString: String = ""
+            for i in 0 ..< Int(ceil(Double(string.count) / 3.0)) {
+                let index = string.count - Int(i + 1) * 3
+                if !groupedString.isEmpty {
+                    groupedString = groupingSeparator + groupedString
+                }
+                groupedString = String(string[string.index(string.startIndex, offsetBy: max(0, index)) ..< string.index(string.startIndex, offsetBy: index + 3)]) + groupedString
+            }
+            return groupedString
+        }
+    } else {
+        return starsAmount.stringValue
+    }
+}
+
 public func dayIntervalString(strings: PresentationStrings, days: Int32) -> String {
     return strings.MessageTimer_Days(max(0, days))
 }