From a1214cf38b49afa2e06cfe2046b5e1e8084e7ea4 Mon Sep 17 00:00:00 2001
From: Matt Bruce <mbrucedogs@gmail.com>
Date: Mon, 20 Jan 2025 19:28:06 -0600
Subject: [PATCH] forgot a hashvalue always changes so I can't use that,
 therefore I created extension on URL for a UniqueIdentifier based of crypto
 that will always be the same.

Signed-off-by: Matt Bruce <mbrucedogs@gmail.com>
---
 EmployeeDirectory/Extensions/URL.swift           | 16 ++++++++++++++++
 .../Services/ImageCacheService.swift             |  2 +-
 2 files changed, 17 insertions(+), 1 deletion(-)
 create mode 100644 EmployeeDirectory/Extensions/URL.swift

diff --git a/EmployeeDirectory/Extensions/URL.swift b/EmployeeDirectory/Extensions/URL.swift
new file mode 100644
index 0000000..e146d27
--- /dev/null
+++ b/EmployeeDirectory/Extensions/URL.swift
@@ -0,0 +1,16 @@
+//
+//  URL.swift
+//  EmployeeDirectory
+//
+//  Created by Matt Bruce on 1/20/25.
+//
+import Foundation
+import CryptoKit
+
+extension URL {
+    internal var uniqueIdentifier: String {
+        let data = Data(absoluteString.utf8)
+        let hash = SHA256.hash(data: data)
+        return hash.compactMap { String(format: "%02x", $0) }.joined()
+    }
+}
diff --git a/EmployeeDirectory/Services/ImageCacheService.swift b/EmployeeDirectory/Services/ImageCacheService.swift
index b28b3c3..ba45f2a 100644
--- a/EmployeeDirectory/Services/ImageCacheService.swift
+++ b/EmployeeDirectory/Services/ImageCacheService.swift
@@ -20,7 +20,7 @@ public class ImageCacheService {
     public init() {}
 
     public func loadImage(from url: URL) async -> UIImage? {
-        let uniqueKey = String(url.absoluteString.hashValue)
+        let uniqueKey = url.uniqueIdentifier
         let cacheKey = uniqueKey as NSString
     
         if let cachedImage = memoryCache.object(forKey: cacheKey) {