refactor(*): Use a strongly-typed options object for reading configuration for the SftpRepository

Creek.FileRepository/Creek.FileRepository.csproj

@@ -25,6 +25,7 @@
 
   <ItemGroup>
     <PackageReference Include="Creek.HelpfulExtensions" Version="1.2.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="5.0.0" />
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>

Creek.FileRepository/Repositories/SftpRepository.cs

@@ -1,5 +1,6 @@
 using Creek.FileRepository.Helpers;
 using Creek.FileRepository.Models;
+using Creek.FileRepository.RepositoryOptions;
 using Creek.HelpfulExtensions;
 using Microsoft.Extensions.Configuration;
 using Renci.SshNet;
@@ -28,11 +29,14 @@ namespace Creek.FileRepository.Repositories
         /// <param name="config">The configuration to initialise the repository with.</param>
         internal SftpRepository(IConfiguration config)
         {
-            this.host = config["SftpRepository:host"];
-            this.port = int.Parse(config["SftpRepository:port"]);
-            this.username = config["SftpRepository:username"].ToString();
-            this.password = config["SftpRepository:password"].ToString();
-            this.remoteDirectoryPath = config["SftpRepository:remoteDirectoryPath"].ToString();
+            SftpRepositoryOptions sftpRepositoryOptions = config.GetSection(SftpRepositoryOptions.SftpRepository)
+                .Get<SftpRepositoryOptions>();
+
+            this.host = sftpRepositoryOptions.Host;
+            this.port = sftpRepositoryOptions.Port;
+            this.username = sftpRepositoryOptions.Username;
+            this.password = sftpRepositoryOptions.Password;
+            this.remoteDirectoryPath = sftpRepositoryOptions.RemoteDirectoryPath;
         }
 
         /// <summary>

Creek.FileRepository/RepositoryOptions/SftpRepositoryOptions.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Creek.FileRepository.RepositoryOptions
+{
+    public class SftpRepositoryOptions
+    {
+        public const string SftpRepository = "SftpRepository";
+
+        public string Host { get; set; }
+        public int Port { get; set; }
+        public string Username { get; set; }
+        public string Password { get; set; }
+        public string RemoteDirectoryPath { get; set; }
+    }
+}

UnitTests/appsettings.json

@@ -1,9 +1,9 @@
 {
   "SftpRepository": {
-    "host": "",
-    "port": 22,
-    "username": "",
-    "password": "",
-    "remoteDirectoryPath": "/"
+    "Host": "",
+    "Port": 22,
+    "Username": "",
+    "Password": "",
+    "RemoteDirectoryPath": "/"
   }
 }