MGWDev.SPClient

This library simplifies consuming SharePoint REST API.

The goal of it is to expose lightweight SDK based on HttpClient.

It supports PnP.Auth IAuthenticationProvider to get token. To use it

InteractiveAuthenticationProvider provider = new InteractiveAuthenticationProvider("app-id", "tenant-id", new Uri("reply-url"));
PnPAuthenticator authenticator = new PnPAuthenticator(provider);

HttpClient client = HttpClientFactory.GetHttpClient("http://<tenant>.sharepoint.com", authenticator);

The biggest advantage of this library, is it can generate select, expand and filter statement based on objects you define amd Linq expression.

    public class InformationMessage : SPListItem
    {
        [JsonPropertyName("MessageDescription")]
        public string? Body { get; set; }
        [JsonPropertyName("MessageStartDate")]
        public DateTime? StartDate { get; set; }
        [JsonPropertyName("MessageEndDate")]
        public DateTime? EndDate { get; set; }
    }
    
    BaseCollectionEntityService<InformationMessage> service = new BaseCollectionEntityService<InformationMessage>(client, "/sites/tea-point/_api/web/lists/getByTitle('InformationMessages')/items");
    List<InformationMessage> messages = await service.Get(message => message.Author.Id == 7);
    List<InformationMessage> otherMessages = await service.Get(message => message.EndDate <= DateTime.UtcNow || message.Title == "Test 6-11-2020-1");