Add basic auth to power bi endpoint

WebAPI/Controllers/LayersController.cs

@@ -1,4 +1,5 @@
 using System.Globalization;
+using System.Text;
 using DiunaBIWebAPI.dataImporters;
 using Google.Apis.Sheets.v4;
 using Microsoft.AspNetCore.Authorization;
@@ -96,7 +97,7 @@ namespace WebAPI.Controllers
             }
         }
         [HttpGet]
-        [Route("getByNumber/{apiKey}/{number}")]
+        [Route("getForPowerBI/{apiKey}/{number}")]
         public IActionResult GetByNumber(string apiKey, int number)
         {
             if (apiKey != configuration["apiKey"])
@@ -105,11 +106,23 @@ namespace WebAPI.Controllers
             }
 
             if (
-                !Request.Headers.TryGetValue("D-BI-AUTH", out var authKey)
-                || authKey != configuration["authKey"])
+                !Request.Headers.TryGetValue("Authorization", out var authHeader))
             {
                 return Unauthorized();
             }
+            string[] credentialsArr = authHeader.ToString().Split(" ");
+            if (credentialsArr.Length != 2)
+            {
+                return Unauthorized();
+            }
+            var authValue = Encoding.UTF8.GetString(Convert.FromBase64String(credentialsArr[1]));
+            var username = authValue.Split(':')[0];
+            var password = authValue.Split(':')[1];
+            if (username != configuration["powerBI-user"] || password != configuration["powerBI-pass"])
+            {
+                return Unauthorized();
+            }
+            
             try
             {
                 return Ok(db.Layers