Couple of bugs when deleting posts

It's also impossible to pin the thread:

Something went wrong: [DwE500REX]

java.lang.RuntimeException: pageMeta.numPostsTotal is 3 but should be = postNr + 1 = 4 [EdE3PFK2W0]
	at com.debiki.core.Prelude$.die(Prelude.scala:254)
	at com.debiki.core.Prelude$.dieIf(Prelude.scala:274)
	at debiki.dao.PagesDao.addMetaMessage(PagesDao.scala:793)
	at debiki.dao.PagesDao.addMetaMessage$(PagesDao.scala:769)
	at debiki.dao.SiteDao.addMetaMessage(SiteDao.scala:113)
	at debiki.dao.PagesDao.$anonfun$pinOrUnpin$2(PagesDao.scala:463)
	at debiki.dao.SiteDao.$anonfun$readWriteTransaction$2(SiteDao.scala:302)
	at com.debiki.core.DbDao2.readWriteSiteTransaction(DbDao2.scala:67)
	at debiki.dao.SiteDao.$anonfun$readWriteTransaction$1(SiteDao.scala:302)
	at debiki.dao.SiteDao$.siteWriteLockIdImpl(SiteDao.scala:814)
	at debiki.dao.SiteDao$.$anonfun$withSiteWriteLock$1(SiteDao.scala:803)
	at debiki.dao.SystemDao$.withWholeDbReadLock(SystemDao.scala:876)
	at debiki.dao.SiteDao$.withSiteWriteLock(SiteDao.scala:803)
	at debiki.dao.SiteDao.readWriteTransaction(SiteDao.scala:301)
	at debiki.dao.PagesDao.pinOrUnpin(PagesDao.scala:456)
	at debiki.dao.PagesDao.pinPage(PagesDao.scala:444)
	at debiki.dao.PagesDao.pinPage$(PagesDao.scala:443)
	at debiki.dao.SiteDao.pinPage(SiteDao.scala:113)
	at controllers.PageController.$anonfun$pinPage$1(PageController.scala:221)
	at scala.Function1.$anonfun$andThen$1(Function1.scala:57)
	at talkyard.server.http.PlainApiActions$$anon$1.runBlockIfAuthOk(PlainApiActions.scala:699)
	at talkyard.server.http.PlainApiActions$$anon$1.invokeBlockAuthViaCookie(PlainApiActions.scala:447)
	at talkyard.server.http.PlainApiActions$$anon$1.invokeBlockImpl(PlainApiActions.scala:250)
	at talkyard.server.http.PlainApiActions$$anon$1.invokeBlock(PlainApiActions.scala:136)
	at talkyard.server.http.PlainApiActions$$anon$1.invokeBlock(PlainApiActions.scala:109)
	at play.api.mvc.ActionBuilder$$anon$9.apply(Action.scala:379)
	at talkyard.server.http.PlainApiActions$$anon$1.$anonfun$composeAction$1(PlainApiActions.scala:123)
	at talkyard.server.http.SafeActions$ExceptionAction$.invokeBlock(SafeActions.scala:126)
	at talkyard.server.http.SafeActions$ExceptionAction$.invokeBlock(SafeActions.scala:83)
	at play.api.mvc.ActionBuilder$$anon$9.apply(Action.scala:379)
	at play.api.mvc.Action.$anonfun$apply$4(Action.scala:82)
	at play.api.libs.streams.StrictAccumulator.$anonfun$mapFuture$4(Accumulator.scala:168)
	at scala.util.Try$.apply(Try.scala:213)
	at play.api.libs.streams.StrictAccumulator.$anonfun$mapFuture$3(Accumulator.scala:168)
	at scala.Function1.$anonfun$andThen$1(Function1.scala:57)
	at scala.Function1.$anonfun$andThen$1(Function1.scala:57)
	at play.api.libs.streams.StrictAccumulator.run(Accumulator.scala:200)
	at play.core.server.AkkaHttpServer.$anonfun$runAction$4(AkkaHttpServer.scala:418)
	at akka.http.scaladsl.util.FastFuture$.strictTransform$1(FastFuture.scala:41)
	at akka.http.scaladsl.util.FastFuture$.$anonfun$transformWith$3(FastFuture.scala:51)
	at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:64)
	at akka.dispatch.BatchingExecutor$AbstractBatch.processBatch(BatchingExecutor.scala:63)
	at akka.dispatch.BatchingExecutor$BlockableBatch.$anonfun$run$1(BatchingExecutor.scala:100)
	at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
	at scala.concurrent.BlockContext$.withBlockContext(BlockContext.scala:85)
	at akka.dispatch.BatchingExecutor$BlockableBatch.run(BatchingExecutor.scala:100)
	at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:49)
	at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(ForkJoinExecutorConfigurator.scala:48)
	at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
	at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
	at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
	at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)

I think this comes from numPostsTotal not being updated correctly when we use the API to add posts to a page.

Seems in some API code path I forgot to call some counter update function, and then the above assertion fails, but not until now when deleting the post.

Note to myself: Here's the assertion:

require(numOrigPostRepliesVisible <= numRepliesVisible,
    s"Fail: $numOrigPostRepliesVisible <= $numRepliesVisible [EsE0GY42B] $wp")

impossible to pin the thread

This is another assertion, probably failing because of the same underlying issue.

I could make this work again by manually replying to one of the posts

Probably the counters get updated properly then, and thereafter the assertion won't fail. (I'm surprised you figured out that replying-then-deleting might work b.t.w.? :- ))

Thanks for reporting

Edit:

I think this comes from numPostsTotal not being updated correctly when we use the API

Aha, yes :- )   sorry for the troubles