From 09e8a58d154f9e6b3c6199b46a9abb345a75ebb6 Mon Sep 17 00:00:00 2001
From: "Collin M. Barrett" <collinbarrett@users.noreply.github.com>
Date: Wed, 26 Jun 2019 15:34:33 -0500
Subject: [PATCH] get list IDs and ViewUrls from API

---
 src/FilterLists.Agent/CaptureLists.cs         | 15 +++++-----
 src/FilterLists.Agent/FilterListDto.cs        |  8 ++++++
 src/FilterLists.Agent/FilterListsApiClient.cs | 28 +++++++++++++++++++
 src/FilterLists.Agent/Program.cs              |  5 ++--
 4 files changed, 45 insertions(+), 11 deletions(-)
 create mode 100644 src/FilterLists.Agent/FilterListDto.cs
 create mode 100644 src/FilterLists.Agent/FilterListsApiClient.cs

diff --git a/src/FilterLists.Agent/CaptureLists.cs b/src/FilterLists.Agent/CaptureLists.cs
index 9f38c1f09..095d3581b 100644
--- a/src/FilterLists.Agent/CaptureLists.cs
+++ b/src/FilterLists.Agent/CaptureLists.cs
@@ -1,4 +1,5 @@
-using System.Threading;
+using System.Collections.Generic;
+using System.Threading;
 using System.Threading.Tasks;
 using MediatR;
 using RestSharp;
@@ -13,16 +14,14 @@ public class Command : IRequest
 
         public class Handler : AsyncRequestHandler<Command>
         {
-            private readonly IRestClient _restClient;
+            private readonly IFilterListsApiClient apiClient;
 
-            public Handler(IRestClient restClient)
-            {
-                _restClient = restClient;
-            }
+            public Handler(IFilterListsApiClient apiClient) => this.apiClient = apiClient;
 
-            protected override Task Handle(Command request, CancellationToken cancellationToken)
+            protected override async Task Handle(Command request, CancellationToken cancellationToken)
             {
-                return Task.CompletedTask;
+                var listsRequest = new RestRequest("lists");
+                var restResponse = await apiClient.ExecuteAsync<IEnumerable<FilterListDto>>(listsRequest);
             }
         }
     }
diff --git a/src/FilterLists.Agent/FilterListDto.cs b/src/FilterLists.Agent/FilterListDto.cs
new file mode 100644
index 000000000..e7d12dfac
--- /dev/null
+++ b/src/FilterLists.Agent/FilterListDto.cs
@@ -0,0 +1,8 @@
+namespace FilterLists.Agent
+{
+    public class FilterListDto
+    {
+        public int Id { get; private set; }
+        public string ViewUrl { get; private set; }
+    }
+}
\ No newline at end of file
diff --git a/src/FilterLists.Agent/FilterListsApiClient.cs b/src/FilterLists.Agent/FilterListsApiClient.cs
new file mode 100644
index 000000000..d95931763
--- /dev/null
+++ b/src/FilterLists.Agent/FilterListsApiClient.cs
@@ -0,0 +1,28 @@
+using System;
+using System.Threading.Tasks;
+using RestSharp;
+
+namespace FilterLists.Agent
+{
+    public interface IFilterListsApiClient
+    {
+        Task<TResponse> ExecuteAsync<TResponse>(RestRequest request);
+    }
+
+    public class FilterListsApiClient : IFilterListsApiClient
+    {
+        private const string FilterListsApiBaseUrl = "https://filterlists.com/api/v1";
+        private const string ExceptionMessage = "Error retrieving response from FilterLists API.";
+        private readonly IRestClient restClient;
+
+        public FilterListsApiClient() => restClient = new RestClient(FilterListsApiBaseUrl);
+
+        public async Task<TResponse> ExecuteAsync<TResponse>(RestRequest request)
+        {
+            var response = await restClient.ExecuteTaskAsync<TResponse>(request);
+            if (response.ErrorException == null)
+                return response.Data;
+            throw new ApplicationException(ExceptionMessage, response.ErrorException);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/FilterLists.Agent/Program.cs b/src/FilterLists.Agent/Program.cs
index 646f6da85..aca04a3bc 100644
--- a/src/FilterLists.Agent/Program.cs
+++ b/src/FilterLists.Agent/Program.cs
@@ -4,7 +4,6 @@
 using Autofac.Extensions.DependencyInjection;
 using MediatR;
 using Microsoft.Extensions.DependencyInjection;
-using RestSharp;
 
 //TODO:  get raw list urls and IDs
 //TODO:  foreach list, download and persist raw list to disk with standardized name and overwriting the previous version
@@ -16,7 +15,6 @@ namespace FilterLists.Agent
 {
     public static class Program
     {
-        private const string FilterListsApiBaseUrl = "https://filterlists.com/api/v1";
         private static IServiceProvider _serviceProvider;
 
         public static async Task Main()
@@ -35,8 +33,9 @@ private static void RegisterServices()
             var serviceCollection = new ServiceCollection();
             var containerBuilder = new ContainerBuilder();
 
+            // register Agent services
             serviceCollection.AddMediatR(typeof(Program).Assembly);
-            containerBuilder.Register<IRestClient>(c => new RestClient(FilterListsApiBaseUrl)).SingleInstance();
+            containerBuilder.RegisterType<FilterListsApiClient>().AsImplementedInterfaces().SingleInstance();
 
             containerBuilder.Populate(serviceCollection);
             var container = containerBuilder.Build();