taler-ios

commit 345e17aa34550060e3653b1c7bf27be12b2b1fc9
parent a0134110ff68746513e86dbdaf7eaccfdc673be6
Author: Marc Stibane <marc@taler.net>
Date:   Thu, 20 Aug 2026 19:22:03 +0200

AI: normalize amounts

Diffstat:
M
taler-swift/Sources/taler-swift/Amount.swift
 | 
12
++++++++----

1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/taler-swift/Sources/taler-swift/Amount.swift b/taler-swift/Sources/taler-swift/Amount.swift
@@ -163,17 +163,21 @@ public final class Amount: Codable, Hashable, @unchecked Sendable, CustomStringC
     /// The string representation of the value, formatted as "`integer`.`fraction`",
     /// no trailing zeroes, no group separator.
     public var valueStr: String {
-        if fraction == 0 {
-            return String(integer)
+        // Render a normalized copy: a fraction >= fractionalBase() would otherwise
+        // produce extra leading digits, e.g. fraction 4_000_000_000 as "0.400"
+        // instead of "40". Fall back to self when normalization is impossible.
+        let this = (try? normalizedCopy()) ?? self
+        if this.fraction == 0 {
+            return String(this.integer)
         } else {
-            var frac = UInt64(fraction)
+            var frac = UInt64(this.fraction)
             let base = UInt64(fractionalBase())
             var fracStr = ""
             while (frac > 0) {
                 fracStr += String(frac / ( base / 10))
                 frac = (frac * 10) % base
             }
-            return "\(integer)\(Self.decimalSeparator)\(fracStr)"
+            return "\(this.integer)\(Self.decimalSeparator)\(fracStr)"
         }
     }