Major rewrite

SoilMoistureAPI/Middleware/ApiKeyMiddleware.cs

@@ -0,0 +1,44 @@
+/*
+using Microsoft.AspNetCore.Http;
+using Microsoft.Extensions.Configuration;
+using System.Linq; // Ensure this namespace is included
+using System.Threading.Tasks;
+
+namespace SoilMoistureAPI.Middleware
+{
+    public class ApiKeyMiddleware
+    {
+        private readonly RequestDelegate _next;
+        private const string APIKEYNAME = "X-API-KEY";
+        private readonly string[] _validApiKeys;
+
+        public ApiKeyMiddleware(RequestDelegate next, IConfiguration configuration)
+        {
+            _next = next;
+            _validApiKeys = configuration.GetSection("ApiSettings:ValidApiKeys").Get<string[]>();
+        }
+
+        public async Task InvokeAsync(HttpContext context)
+        {
+            if (!context.Request.Headers.TryGetValue(APIKEYNAME, out var extractedApiKey))
+            {
+                context.Response.StatusCode = 401; // Unauthorized
+                await context.Response.WriteAsync("API Key was not provided.");
+                return;
+            }
+
+            // Convert StringValues to string using FirstOrDefault()
+            var apiKey = extractedApiKey.FirstOrDefault();
+
+            if (string.IsNullOrEmpty(apiKey) || !_validApiKeys.Contains(apiKey))
+            {
+                context.Response.StatusCode = 403; // Forbidden
+                await context.Response.WriteAsync("Unauthorized client.");
+                return;
+            }
+
+            await _next(context);
+        }
+    }
+}
+*/