From b498ec86168bf9ac50d9272581a9b87605476499 Mon Sep 17 00:00:00 2001
From: Mathias Beaulieu-Duncan <mathias@openharbor.io>
Date: Wed, 8 Oct 2025 11:38:29 -0400
Subject: [PATCH] added GetHash helper

---
 .../ServiceCollectionExtensions.cs                 | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Svrnty.GeoManagement.Abstractions/ServiceCollectionExtensions.cs b/Svrnty.GeoManagement.Abstractions/ServiceCollectionExtensions.cs
index e5c5dbb..44ae291 100644
--- a/Svrnty.GeoManagement.Abstractions/ServiceCollectionExtensions.cs
+++ b/Svrnty.GeoManagement.Abstractions/ServiceCollectionExtensions.cs
@@ -1,3 +1,5 @@
+using System.Security.Cryptography;
+using System.Text;
 using Svrnty.GeoManagement.Abstractions.Abstractions;
 using Svrnty.GeoManagement.Abstractions.Models;
 
@@ -65,4 +67,16 @@ public static class ServiceCollectionExtensions
 
     return $"{address.Line2}, {address.Line1}\n{address.City}, {address.Subdivision} {address.PostalCode}\n{address.CountryCode}";
   }
+
+  public static string GetHash(this IAddress address)
+    => ComputeSha256Hex(address.GetFormattedAddress());
+  
+  private static string ComputeSha256Hex(string input)
+  {
+    using SHA256 sha256 = SHA256.Create();
+    byte[] bytes = Encoding.UTF8.GetBytes(input);
+    byte[] hash = sha256.ComputeHash(bytes);
+
+    return Convert.ToHexString(hash).ToLower();
+  }
 }
\ No newline at end of file