feat: add BroadcastCancelAsync method

src/Resend/IResend.cs

@@ -788,6 +788,14 @@ public interface IResend
     /// <returns>Response.</returns>
     Task<ResendResponse> BroadcastScheduleAsync( Guid broadcastId, DateTime scheduleFor, CancellationToken cancellationToken = default );
 
+    /// <summary>
+    /// Cancels a queued or scheduled broadcast.
+    /// </summary>
+    /// <param name="broadcastId">Broadcast identifier.</param>
+    /// <param name="cancellationToken">Cancelation token.</param>
+    /// <returns>Response.</returns>
+    Task<ResendResponse> BroadcastCancelAsync( Guid broadcastId, CancellationToken cancellationToken = default );
+
     /// <summary>
     /// Lists all broadcasts.
     /// </summary>

src/Resend/ResendClient.cs

@@ -431,6 +431,16 @@ public ResendClient( IOptionsSnapshot<ResendClientOptions> options, HttpClient h
     }
 
 
+    /// <inheritdoc/>
+    public Task<ResendResponse> BroadcastCancelAsync( Guid broadcastId, CancellationToken cancellationToken = default )
+    {
+        var path = $"/broadcasts/{broadcastId}/cancel";
+        var req = new HttpRequestMessage( HttpMethod.Post, path );
+
+        return Execute( req, cancellationToken );
+    }
+
+
     /// <inheritdoc/>
     public Task<ResendResponse<List<Broadcast>>> BroadcastListAsync( CancellationToken cancellationToken = default )
     {

tests/Resend.Tests/ResendClientTests.cs

@@ -391,6 +391,16 @@ public async Task BroadcastSchedule()
     }
 
 
+    /// <summary/>
+    [Fact]
+    public async Task BroadcastCancel()
+    {
+        var resp = await _resend.BroadcastCancelAsync( Guid.NewGuid() );
+
+        Assert.NotNull( resp );
+    }
+
+
     /// <summary/>
     [Fact]
     public async Task BroadcastList()

tools/Resend.ApiServer/Controllers/BroadcastController.cs

@@ -79,6 +79,17 @@ public ActionResult BroadcastSend( [FromRoute] Guid broadcastId, [FromBody] Broa
     }
 
 
+    /// <summary />
+    [HttpPost]
+    [Route( "broadcasts/{broadcastId}/cancel" )]
+    public ActionResult BroadcastCancel( [FromRoute] Guid broadcastId )
+    {
+        _logger.LogDebug( "BroadcastCancel" );
+
+        return Ok();
+    }
+
+
     /// <summary />
     [HttpDelete]
     [Route( "broadcasts/{broadcastId}" )]

tools/Resend.Cli/Broadcast/BroadcastCancelCommand.cs

@@ -0,0 +1,33 @@
+using McMaster.Extensions.CommandLineUtils;
+using System.ComponentModel.DataAnnotations;
+
+namespace Resend.Cli.Broadcast;
+
+/// <summary />
+[Command( "cancel", Description = "Cancels a queued or scheduled broadcast" )]
+public class BroadcastCancelCommand
+{
+    private readonly IResend _resend;
+
+
+    /// <summary />
+    [Argument( 0, Description = "Broadcast identifier" )]
+    [Required]
+    public Guid? BroadcastId { get; set; }
+
+
+    /// <summary />
+    public BroadcastCancelCommand( IResend resend )
+    {
+        _resend = resend;
+    }
+
+
+    /// <summary />
+    public async Task<int> OnExecuteAsync()
+    {
+        await _resend.BroadcastCancelAsync( this.BroadcastId!.Value );
+
+        return 0;
+    }
+}

tools/Resend.Cli/BroadcastCommand.cs

@@ -5,6 +5,7 @@ namespace Resend.Cli;
 /// <summary />
 [Command( "broadcast", Description = "Broadcast management" )]
 [Subcommand( typeof( Broadcast.BroadcastAddCommand ))]
+[Subcommand( typeof( Broadcast.BroadcastCancelCommand ) )]
 [Subcommand( typeof( Broadcast.BroadcastDeleteCommand ) )]
 [Subcommand( typeof( Broadcast.BroadcastListCommand ) )]
 [Subcommand( typeof( Broadcast.BroadcastRetrieveCommand ))]