Musify/Infrastructure/Messaging/Activities/ResizePictureActivity.cs

using MassTransit;
using Musify.Application.Contracts.Infrastructure;
using Musify.Domain.Entities;
using Musify.Infrastructure.Messaging.Activities.Arguments;

namespace Musify.Infrastructure.Messaging.Activities
{
    public class ResizePictureActivity(
        IStorageHandler storageHandler,
        IPictureHandler pictureHandler,
        IProcessTrackingStore processTrackingStore)
        : IExecuteActivity<ResizePictureArgument>
    {
        public const string ExecuteEndpointName = "Resize-Picture";

        public async Task<ExecutionResult> Execute(ExecuteContext<ResizePictureArgument> executeContext)
        {
            var processId = await processTrackingStore.GetOrCreateProcessAsync(
                "RoutingSlip",
                executeContext.CorrelationId ?? executeContext.TrackingNumber,
                executeContext.ConversationId,
                executeContext.MessageId,
                executeContext.CancellationToken);

            var stepId = await processTrackingStore.StartStepAsync(
                processId,
                nameof(ResizePictureActivity),
                ProcessStepComponentType.Activity,
                0,
                executeContext.CancellationToken);

            try
            {
                var file = await storageHandler.GetFileAsync(
                    executeContext.Arguments.OriginalBucketName,
                    executeContext.Arguments.OriginalKeyName,
                    executeContext.CancellationToken);

                if (!file.IsSuccess)
                {
                    string errorMessages = string.Join(", ", file.Errors);
                    throw new Exception(errorMessages);
                }

                var resizedPicture = await pictureHandler.ResizePictureAsync(
                    file.Value,
                    executeContext.Arguments.Width,
                    executeContext.Arguments.Height,
                    executeContext.CancellationToken);

                if (!resizedPicture.IsSuccess)
                {
                    string errorMessage = string.Join(", ", resizedPicture.Errors);
                    throw new Exception(errorMessage);
                }

                var uploadFile = await storageHandler.UploadFileAsync(
                    resizedPicture.Value,
                    pictureHandler.ContentType,
                    executeContext.Arguments.DestinationBucketName,
                    executeContext.Arguments.DestinationKeyName,
                    executeContext.CancellationToken);

                if (!uploadFile.IsSuccess)
                {
                    var errorMessage = string.Join(", ", uploadFile.Errors);
                    throw new Exception(errorMessage);
                }

                await processTrackingStore.CompleteStepAsync(processId, stepId, executeContext.CancellationToken);
                return executeContext.Completed();
            }
            catch (Exception exception)
            {
                await processTrackingStore.FailStepAsync(processId, stepId, exception.Message, executeContext.CancellationToken);
                throw;
            }
        }
    }
}