From 74d01fc648b2825e85afb051c3e3903c793e3ebd Mon Sep 17 00:00:00 2001
From: Max <51083570+DRdrProfessor@users.noreply.github.com>
Date: Sat, 4 May 2024 22:21:15 +0200
Subject: [PATCH] Added culture utilities

---
 CLI/Program.cs                |  1 +
 DotBased/Utilities/Culture.cs | 74 +++++++++++++++++++++++++++++++++++
 2 files changed, 75 insertions(+)
 create mode 100644 DotBased/Utilities/Culture.cs

diff --git a/CLI/Program.cs b/CLI/Program.cs
index 444ad5a..e2d579d 100644
--- a/CLI/Program.cs
+++ b/CLI/Program.cs
@@ -9,6 +9,7 @@ var serilogLogger = SetupSerilog();
 LogService.AddLogAdapter(new SerilogAdapter(serilogLogger));
 var logger = LogService.RegisterLogger(typeof(Program));
 
+
 Console.ReadKey(); // Hold console app open.
 return;
 
diff --git a/DotBased/Utilities/Culture.cs b/DotBased/Utilities/Culture.cs
new file mode 100644
index 0000000..bcc49bf
--- /dev/null
+++ b/DotBased/Utilities/Culture.cs
@@ -0,0 +1,74 @@
+using System.Globalization;
+
+namespace DotBased.Utilities;
+
+public static class Culture
+{
+    private static List<CultureInfo> _sysCultures = new List<CultureInfo>();
+    private static List<RegionInfo> _regions = new List<RegionInfo>();
+
+    /// <summary>
+    /// Get all system known cultures.
+    /// </summary>
+    /// <remarks>Will be cached after first call, to clear the internal list call <see cref="ClearCached"/> function</remarks>
+    /// <returns>The list with <see cref="CultureInfo"/>'s the system knows</returns>
+    public static IEnumerable<CultureInfo> GetSystemCultures()
+    {
+        //TODO: Probally need some internal caching for this
+        if (_sysCultures.Count == 0)
+            _sysCultures = CultureInfo.GetCultures(CultureTypes.AllCultures).ToList();
+        return _sysCultures;
+    }
+
+    /// <summary>
+    /// Get the regions the system knows.
+    /// </summary>
+    /// <remarks>The list will internally be cached, clear the cache with the <see cref="ClearCached"/> function</remarks>
+    /// <returns>A list with regions from the system</returns>
+    public static IEnumerable<RegionInfo> GetRegions()
+    {
+        if (_regions.Count == 0)
+            _regions = GetSystemCultures().Where(cul => !cul.IsNeutralCulture).Where(cul => cul.LCID != 0x7F).Select(x => new RegionInfo(x.Name)).ToList();
+        return _regions;
+    }
+
+    /// <summary>
+    /// Clears the specified cache.
+    /// </summary>
+    public static void ClearCached(CacheType type)
+    {
+        switch (type)
+        {
+            case CacheType.Culture:
+                _sysCultures.Clear();
+                break;
+            case CacheType.Region:
+                _regions.Clear();
+                break;
+            default:
+                throw new ArgumentOutOfRangeException(nameof(type), type, null);
+        }
+    }
+    public enum CacheType
+    {
+        Culture,
+        Region
+    }
+
+    public static class Currency
+    {
+        /// <summary>
+        /// Formats the currency amount to the given culture currency.
+        /// </summary>
+        /// <param name="amount">The amount to format</param>
+        /// <param name="culture">The culture to be formatted in</param>
+        /// <returns></returns>
+        public static string AmountToCultureCurrency(double amount, CultureInfo culture) => string.Format(culture, "{0:C}", amount);
+
+        /// <summary>
+        /// Get a list of ISO 3 letter currency symbols.
+        /// </summary>
+        /// <returns>List with ISOCurrencySymbols</returns>
+        public static IEnumerable<string> GetIsoCurrencySymbols() => GetRegions().Select(x => x.ISOCurrencySymbol).Distinct().ToList();
+    }
+}
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