public static Func <Task> React(
IEventStore eventStore,
Func <IAsyncDocumentSession> getSession,
object @event
)
{
return(@event switch
{
V1.ClassifiedAdPublished e => ()
=> EmitPublishedAdEvent(e.Id, e.PublishedAt),
_ => (Func <Task>)null
});
public static Func <Task> GetHandler(
IAsyncDocumentSession session,
object @event)
{
Func <Guid, string> getDbId = PublishedAd.GetDatabaseId;
return(@event switch
{
V1.ClassifiedAdPublished e =>
() => Create(e),
V1.ClassifiedAdTitleChanged e =>
() => Update(e.Id, ad => ad.Title = e.Title),
V1.ClassifiedAdPriceUpdated e =>
() => Update(e.Id, ad => ad.Price = e.Price),
V1.ClassifiedAdDeleted e =>
() => Delete(e.Id),
_ => (Func <Task>)null
});
public async Task Project(object @event)
{
switch (@event)
{
case ClassifiedAdPublished e:
var photoUrl = _getUserPhoto(e.OwnerId);
var newEvent = new V1.ClassifiedAdPublished
{
Id = e.Id,
OwnerId = e.OwnerId,
ApprovedBy = e.ApprovedBy,
SellersPhotoUrl = photoUrl
};
await _eventStoreConnection.AppendEvents(
StreamName,
ExpectedVersion.Any,
newEvent);
break;
}
}
