fix scheduling posts (#4392)

Mastodon returns different reponses when posting normally and when
scheduling. This was previously ignored silently, but Moshi is more
correct than Gson and fails, which causes the `SendStatusService` to
retry sending forever and a lot of posts are scheduled.
Mastodon should actually ignore multiple attempts at scheduling the same
post, but doesn't so I filed this
https://github.com/mastodon/mastodon/issues/30039

cc @cbeyls

app/src/main/java/com/keylesspalace/tusky/appstore/Events.kt

@@ -4,6 +4,7 @@ import com.keylesspalace.tusky.TabData
 import com.keylesspalace.tusky.entity.Account
 import com.keylesspalace.tusky.entity.Notification
 import com.keylesspalace.tusky.entity.Poll
+import com.keylesspalace.tusky.entity.ScheduledStatus
 import com.keylesspalace.tusky.entity.Status
 
 data class StatusChangedEvent(val status: Status) : Event
@@ -13,7 +14,7 @@ data class BlockEvent(val accountId: String) : Event
 data class MuteEvent(val accountId: String) : Event
 data class StatusDeletedEvent(val statusId: String) : Event
 data class StatusComposedEvent(val status: Status) : Event
-data class StatusScheduledEvent(val status: Status) : Event
+data class StatusScheduledEvent(val scheduledStatus: ScheduledStatus) : Event
 data class ProfileEditedEvent(val newProfileData: Account) : Event
 data class PreferenceChangedEvent(val preferenceKey: String) : Event
 data class MainTabsChangedEvent(val newTabs: List<TabData>) : Event

app/src/main/java/com/keylesspalace/tusky/network/MastodonApi.kt

@@ -199,6 +199,14 @@ interface MastodonApi {
         @Body status: NewStatus
     ): NetworkResult<Status>
 
+    @POST("api/v1/statuses")
+    suspend fun createScheduledStatus(
+        @Header("Authorization") auth: String,
+        @Header(DOMAIN_HEADER) domain: String,
+        @Header("Idempotency-Key") idempotencyKey: String,
+        @Body status: NewStatus
+    ): NetworkResult<ScheduledStatus>
+
     @GET("api/v1/statuses/{id}")
     suspend fun status(@Path("id") statusId: String): NetworkResult<Status>
 

app/src/main/java/com/keylesspalace/tusky/service/SendStatusService.kt

@@ -49,6 +49,7 @@ import com.keylesspalace.tusky.entity.Attachment
 import com.keylesspalace.tusky.entity.MediaAttribute
 import com.keylesspalace.tusky.entity.NewPoll
 import com.keylesspalace.tusky.entity.NewStatus
+import com.keylesspalace.tusky.entity.ScheduledStatus
 import com.keylesspalace.tusky.entity.Status
 import com.keylesspalace.tusky.network.MastodonApi
 import com.keylesspalace.tusky.util.unsafeLazy
@@ -256,13 +257,24 @@ class SendStatusService : Service(), Injectable {
                 }
             )
 
+            val scheduled = !statusToSend.scheduledAt.isNullOrEmpty()
+
             val sendResult = if (isNew) {
-                mastodonApi.createStatus(
-                    "Bearer " + account.accessToken,
-                    account.domain,
-                    statusToSend.idempotencyKey,
-                    newStatus
-                )
+                if (!scheduled) {
+                    mastodonApi.createStatus(
+                        "Bearer " + account.accessToken,
+                        account.domain,
+                        statusToSend.idempotencyKey,
+                        newStatus
+                    )
+                } else {
+                    mastodonApi.createScheduledStatus(
+                        "Bearer " + account.accessToken,
+                        account.domain,
+                        statusToSend.idempotencyKey,
+                        newStatus
+                    )
+                }
             } else {
                 mastodonApi.editStatus(
                     statusToSend.statusId!!,
@@ -282,14 +294,12 @@ class SendStatusService : Service(), Injectable {
 
                 mediaUploader.cancelUploadScope(*statusToSend.media.map { it.localId }.toIntArray())
 
-                val scheduled = !statusToSend.scheduledAt.isNullOrEmpty()
-
                 if (scheduled) {
-                    eventHub.dispatch(StatusScheduledEvent(sentStatus))
+                    eventHub.dispatch(StatusScheduledEvent(sentStatus as ScheduledStatus))
                 } else if (!isNew) {
-                    eventHub.dispatch(StatusChangedEvent(sentStatus))
+                    eventHub.dispatch(StatusChangedEvent(sentStatus as Status))
                 } else {
-                    eventHub.dispatch(StatusComposedEvent(sentStatus))
+                    eventHub.dispatch(StatusComposedEvent(sentStatus as Status))
                 }
 
                 notificationManager.cancel(statusId)