shorten credits with K/M suffixes

BGS/Cartographics.cs

@@ -26,7 +26,7 @@ namespace NonaBGS.BGS {
 
         public override string ToString() {
             StringBuilder builder = new StringBuilder();
-            builder.AppendFormat("Sold {0} CR worth of Cartographics Data", TotalSum);
+            builder.AppendFormat("Sold {0} worth of Cartographics Data", Credits.FormatCredits(TotalSum));
             return builder.ToString();
         }
 

BGS/SellMicroResources.cs

@@ -22,7 +22,7 @@ namespace NonaBGS.BGS {
         }
 
         public override string ToString() {
-            return string.Format("Sell Micro Resources: {0} CR", TotalSum);
+            return string.Format("Sell Micro Resources: {0}", Credits.FormatCredits(TotalSum));
         }
     }
 }

BGS/Vouchers.cs

@@ -31,7 +31,7 @@ namespace NonaBGS.BGS {
         public override string ToString() {
             StringBuilder builder = new StringBuilder();
 
-            builder.AppendFormat("{0} Vouchers: {1} CR", TotalSum, Type);
+            builder.AppendFormat("{0} Vouchers: {1}", Type, Credits.FormatCredits(TotalSum));
 
             return builder.ToString();
         }

Journal/Credits.cs

@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace NonaBGS.Journal {
+    public class Credits {
+        public static string FormatCredits(int amount) {
+            if ((amount % 1000000) == 0) {
+                amount /= 1000000;
+                return string.Format("{0}M CR", amount);
+            } else if ((amount % 1000) == 0) {
+                amount /= 1000;
+                return string.Format("{0}K CR", amount);
+            }
+
+            return string.Format("{0} CR", amount);
+        }
+    }
+}

Journal/MissionCompletedEntry.cs

@@ -101,7 +101,7 @@ namespace NonaBGS.Journal {
             }
 
             if (donated > 0) {
-                builder.AppendFormat(" ({0} CR)", donated);
+                builder.AppendFormat(" ({0})", Credits.FormatCredits(donated));
             }
 
             readable_name = builder.ToString().Trim();

nonabgs.csproj

@@ -75,6 +75,7 @@
     <Compile Include="BGS\SellMicroResources.cs" />
     <Compile Include="EDDB\PopulatedSystems.cs" />
     <Compile Include="EDDB\Stations.cs" />
+    <Compile Include="Journal\Credits.cs" />
     <Compile Include="Journal\EliteDangerous.cs" />
     <Compile Include="Journal\MarketSellEntry.cs" />
     <Compile Include="Journal\MultiSellExplorationDataEntry.cs" />