Web: Set up ContentfulService for fetching Contentful CDA

README.md

@@ -39,6 +39,8 @@ Front Line Live code and target operating model
 |APP_DATACONTEXT*|-|
 |WEB_USERSECRETSID*|-|
 |SQL_ADMIN_PASSWORD*|-|
+|CONTENTFUL_DELIVERY_ACCESS_TOKEN|Content Delivery API - access token|
+|CONTENTFUL_SPACE_ID|Contentful Space ID|
 
 ## Local development
 

Web/Configuration/Contentful/ModuleResolver.cs

@@ -0,0 +1,26 @@
+using System;
+using System.Collections.Generic;
+using Contentful.Core.Configuration;
+
+namespace Web.Configuration.Contentful
+{
+    /// <summary>
+    /// Resolves a strong type from a content type id. Instructing the serialization engine how to deserialize items in a collection.
+    /// </summary>
+    public class ContentfulModuleResolver : IContentTypeResolver
+    {
+        private Dictionary<string, Type> _types = new Dictionary<string, Type>()
+        {
+        };
+
+        /// <summary>
+        /// Method to get a type based on the specified content type id.
+        /// </summary>
+        /// <param name="contentTypeId">The content type id to resolve to a type.</param>
+        /// <returns>The type for the content type id or null if none is found.</returns>
+        public Type Resolve(string contentTypeId)
+        {
+            return _types.TryGetValue(contentTypeId, out var type) ? type : null;
+        }
+    }
+}

Web/Services/IContentfulService.cs

@@ -0,0 +1,36 @@
+using System;
+using System.Linq;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using Contentful.Core;
+
+namespace Web.Services
+{
+    public interface IContentfulService
+    {
+
+        Task<T> GetFirstByContentType<T>(string contentTypeId) where T : class;
+    }
+
+    public class ContentfulService : IContentfulService
+    {
+        private readonly IContentfulClient _contentfulClient;
+
+        public ContentfulService(IContentfulClient contentfulClient)
+        {
+            _contentfulClient = contentfulClient;
+            _contentfulClient.ContentTypeResolver = new Configuration.Contentful.ContentfulModuleResolver();
+        }
+
+        public async Task<T> GetFirstByContentType<T>(string contentTypeId) where T : class
+        {
+            var queryBuilder = new Contentful.Core.Search.QueryBuilder<T>().Limit(1);
+            var resp = await _contentfulClient.GetEntriesByType(contentTypeId, queryBuilder);
+            if (resp.Total == 0)
+            {
+                return null;
+            }
+            return new List<T>(resp.Items).First();
+        }
+    }
+}

Web/Startup.cs

@@ -6,10 +6,12 @@
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
+using Contentful.AspNetCore;
 using Web.Db;
 using Web.Infrastructure;
 using Web.Snippets;
 using Web.Snippets.Microsoft.Extensions.Configuration;
+using Web.Services;
 
 namespace Web
 {
@@ -48,7 +50,9 @@ public void ConfigureServices(IServiceCollection services)
 
             services.AddSingleton<IEmailSender, IdentityEmailSender>();
 
-            services.AddRazorPages() 
+			services.AddContentful(_configuration);
+
+			services.AddRazorPages() 
                 .AddRazorPagesOptions(options =>  //locks down following folder and page for only users that are logged in (regardless of Role)
                 {
                     options.Conventions.AuthorizeAreaFolder("Identity", "/Account/Manage"); //folder for managing own identity
@@ -61,6 +65,7 @@ public void ConfigureServices(IServiceCollection services)
             });
 
             services.AddTransient<UsersFacade>();
+            services.AddScoped<IContentfulService, ContentfulService>();
 		}
 
 		public void Configure(IApplicationBuilder app)

Web/Views/_ViewImports.cshtml

@@ -1,3 +1,4 @@
 @using Web
 @using Web.Models
 @addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers
+@addTagHelper *, Contentful.AspNetCore

src/infra/deploy_terraform.sh

@@ -16,6 +16,10 @@ echo "{
     \"ReCaptcha__SiteKey\": \"$APP_RECAPTCHA_SITEKEY\",
     \"APP_DATACONTEXT\": \"$APP_DATACONTEXT\",
     \"WEB_USERSECRETSID\": \"$WEB_USERSECRETSID\"
+    \"ContentfulOptions__DeliveryApiKey\": \"$CONTENTFUL_DELIVERY_ACCESS_TOKEN\",
+    \"ContentfulOptions__SpaceId\": \"$CONTENTFUL_SPACE_ID\",
+    \"ContentfulOptions__Environment\": \"$ENVIRONMENT_NAME\",
+    \"ContentfulOptions__UsePreviewApi\": false
 }" > ./app-settings.json
 
 echo "Initializing Terraform..."