ComposeActivity refactor (#1541)

* Convert ComposeActivity to Kotlin

* More ComposeActivity cleanups

* Move ComposeActivity to it's own package

* Remove ComposeActivity.IntentBuilder

* Re-do part of the media downsizing/uploading

* Add sending of status to ViewModel, draft media descriptions

* Allow uploading video, update description after uploading

* Enable camera, enable upload cancelling

* Cleanup of ComposeActivity

* Extract CaptionDialog, extract ComposeActivity methods

* Fix handling of redrafted media

* Add initial state and media uploading out of Activity

* Change ComposeOptions.mentionedUsernames to be Set rather than List

We probably don't want repeated usernames when we are writing a post
and Set provides such guarantee for free plus it tells it to the
callers. The only disadvantage is lack of order but it shouldn't be a
problem.

* Add combineOptionalLiveData. Add docs.

It it useful for nullable LiveData's. I think we cannot differentiate
between value not being set and value being null so I just added the
variant without null check.

* Add poll support to Compose.

* cleanup code

* move more classes into compose package

* cleanup code

* fix button behavior

* add error handling for media upload

* add caching for instance data again

* merge develop

* fix scheduled toots

* delete unused string

* cleanup ComposeActivity

* fix restoring media from drafts

* make media upload code a little bit clearer

* cleanup autocomplete search code

* avoid duplicate object creation in SavedTootActivity

* perf: avoid unnecessary work when initializing ComposeActivity

* add license header to new files

* use small toot button on bigger displays

* fix ComposeActivityTest

* fix bad merge

* use Singles.zip instead of Single.zip

app/src/main/java/com/keylesspalace/tusky/receiver/SendStatusBroadcastReceiver.kt

@@ -23,12 +23,15 @@ import androidx.core.app.NotificationCompat
 import androidx.core.app.NotificationManagerCompat
 import androidx.core.app.RemoteInput
 import androidx.core.content.ContextCompat
-import com.keylesspalace.tusky.ComposeActivity
 import com.keylesspalace.tusky.R
+import com.keylesspalace.tusky.components.compose.ComposeActivity
+import com.keylesspalace.tusky.components.compose.ComposeActivity.ComposeOptions
 import com.keylesspalace.tusky.db.AccountManager
 import com.keylesspalace.tusky.entity.Status
 import com.keylesspalace.tusky.service.SendTootService
+import com.keylesspalace.tusky.service.TootToSend
 import com.keylesspalace.tusky.util.NotificationHelper
+import com.keylesspalace.tusky.util.randomAlphanumericString
 import dagger.android.AndroidInjection
 import javax.inject.Inject
 
@@ -85,19 +88,25 @@ class SendStatusBroadcastReceiver : BroadcastReceiver() {
 
                 val sendIntent = SendTootService.sendTootIntent(
                         context,
-                        text,
-                        spoiler,
-                        visibility,
-                        false,
-                        emptyList(),
-                        emptyList(),
-                        emptyList(),
-                        null,
-                        citedStatusId,
-                        null,
-                        null,
-                        null,
-                        null, account, 0)
+                        TootToSend(
+                                text,
+                                spoiler,
+                                visibility.serverString(),
+                                false,
+                                emptyList(),
+                                emptyList(),
+                                emptyList(),
+                                null,
+                                citedStatusId,
+                                null,
+                                null,
+                                null,
+                                null, account.id,
+                                0,
+                                randomAlphanumericString(16),
+                                0
+                        )
+                )
 
                 context.startService(sendIntent)
 
@@ -125,14 +134,14 @@ class SendStatusBroadcastReceiver : BroadcastReceiver() {
 
             accountManager.setActiveAccount(senderId)
 
-            val composeIntent = ComposeActivity.IntentBuilder()
-                    .inReplyToId(citedStatusId)
-                    .replyVisibility(visibility)
-                    .contentWarning(spoiler)
-                    .mentionedUsernames(mentions.toList())
-                    .replyingStatusAuthor(localAuthorId)
-                    .replyingStatusContent(citedText)
-                    .build(context)
+            val composeIntent = ComposeActivity.startIntent(context, ComposeOptions(
+                    inReplyToId = citedStatusId,
+                    replyVisibility = visibility,
+                    contentWarning = spoiler,
+                    mentionedUsernames = mentions.toSet(),
+                    replyingStatusAuthor = localAuthorId,
+                    replyingStatusContent = citedText
+            ))
 
             composeIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)