[WIP] Add new Project API Preview (#1480)

Add Projects API client (preview)

Octokit.Reactive/Clients/IObservableProjectCardsClient.cs

@@ -0,0 +1,82 @@
+using System;
+using System.Diagnostics.CodeAnalysis;
+
+namespace Octokit.Reactive
+{
+    /// <summary>
+    /// A client for GitHub's Project Cards API.
+    /// </summary>
+    /// <remarks>
+    /// See the <a href="https://developer.github.com/v3/repos/projects/cards/">Repository Projects API documentation</a> for more information.
+    /// </remarks>
+    public interface IObservableProjectCardsClient
+    {
+        /// <summary>
+        /// Gets all cards.
+        /// </summary>
+        /// <remarks>
+        /// See the <a href="https://developer.github.com/v3/repos/projects/#list-projects-cards">API documentation</a> for more information.
+        /// </remarks>
+        /// <param name="columnId">The id of the column</param>
+        IObservable<ProjectCard> GetAll(int columnId);
+
+        /// <summary>
+        /// Gets all cards.
+        /// </summary>
+        /// <remarks>
+        /// See the <a href="https://developer.github.com/v3/repos/projects/#list-projects-cards">API documentation</a> for more information.
+        /// </remarks>
+        /// <param name="columnId">The id of the column</param>
+        /// <param name="options">Options for changing the API response</param>
+        IObservable<ProjectCard> GetAll(int columnId, ApiOptions options);
+
+        /// <summary>
+        /// Gets a single card.
+        /// </summary>
+        /// <remarks>
+        /// See the <a href="https://developer.github.com/v3/repos/projects/#get-a-project-card">API documentation</a> for more information.
+        /// </remarks>
+        /// <param name="id">The id of the card</param>
+        [SuppressMessage("Microsoft.Naming", "CA1716:IdentifiersShouldNotMatchKeywords", MessageId = "Get")]
+        IObservable<ProjectCard> Get(int id);
+
+        /// <summary>
+        /// Creates a card.
+        /// </summary>
+        /// <remarks>
+        /// See the <a href="https://developer.github.com/v3/repos/projects/#create-a-project-card">API documentation</a> for more information.
+        /// </remarks>
+        /// <param name="columnId">The id of the column</param>
+        /// <param name="newProjectCard">The card to create</param>
+        IObservable<ProjectCard> Create(int columnId, NewProjectCard newProjectCard);
+
+        /// <summary>
+        /// Updates a card.
+        /// </summary>
+        /// <remarks>
+        /// See the <a href="https://developer.github.com/v3/repos/projects/#update-a-project-card">API documentation</a> for more information.
+        /// </remarks>
+        /// <param name="id">The id of the card</param>
+        /// <param name="projectCardUpdate">New values to update the card with</param>
+        IObservable<ProjectCard> Update(int id, ProjectCardUpdate projectCardUpdate);
+
+        /// <summary>
+        /// Deletes a card.
+        /// </summary>
+        /// <remarks>
+        /// See the <a href="https://developer.github.com/v3/repos/projects/#delete-a-project-card">API documentation</a> for more information.
+        /// </remarks>
+        /// <param name="id">The id of the card</param>
+        IObservable<bool> Delete(int id);
+
+        /// <summary>
+        /// Moves a card.
+        /// </summary>
+        /// <remarks>
+        /// See the <a href="https://developer.github.com/v3/repos/projects/#move-a-project-card">API documentation</a> for more information.
+        /// </remarks>
+        /// <param name="id">The id of the card</param>
+        /// <param name="position">The position to move the card</param>
+        IObservable<bool> Move(int id, ProjectCardMove position);
+    }
+}