Build Microsoft Graph connector article - ContentService.cs

ContentService.cs

using Markdig;
using Microsoft.Graph.Models.ExternalConnectors;
using YamlDotNet.Serialization;

// [...] trimmed for brevity

static class ContentService
{
  static IEnumerable<BlogPost> Extract()
  {
    // [...] trimmed for brevity
  }

  static IEnumerable<ExternalItem> Transform(IEnumerable<BlogPost> content)
  {
    var baseUrl = new Uri("https://blog.mastykarz.nl");

    return content.Select(a =>
    {
      return new ExternalItem
      {
        Id = a.Slug,
        Properties = new()
        {
          AdditionalData = new Dictionary<string, object> {
            { "title", a.Title ?? "" },
            { "excerpt", a.Excerpt ?? "" },
            // [...] trimmed for brevity
          }
        },
        Content = new()
        {
          Value = a.Content ?? "",
          Type = ExternalItemContentType.Text
        },
        Acl = new()
        {
          new()
          {
            Type = AclType.Everyone,
            Value = "everyone",
            AccessType = AccessType.Grant
          }
        },
        // [...] trimmed for brevity
      };
    });
  }

  static async Task Load(IEnumerable<ExternalItem> items)
  {
    foreach (var item in items)
    {
      await GraphService.Client.External
        .Connections[ConnectionConfiguration.ExternalConnection.Id]
        .Items[item.Id]
        .PutAsync(item);
    }
  }

  public static async Task LoadContent()
  {
    var content = Extract();
    var transformed = Transform(content);
    await Load(transformed);
  }
}