Add post editing capability (#2828)

* Add post editing capability

* Don't try to reprocess already uploaded attachments.
Fixes editing posts with existing media

* Don't mark post edits as modified until editing occurs

* Disable UI for things that can't be edited when editing a post

* Finally convert SFragment to kotlin

* Use api endpoint for fetching status source for editing

* Apply review feedback

app/src/main/java/com/keylesspalace/tusky/components/drafts/DraftHelper.kt

@@ -65,6 +65,7 @@ class DraftHelper @Inject constructor(
         failedToSend: Boolean,
         scheduledAt: String?,
         language: String?,
+        statusId: String?,
     ) = withContext(Dispatchers.IO) {
         val externalFilesDir = context.getExternalFilesDir("Tusky")
 
@@ -124,6 +125,7 @@ class DraftHelper @Inject constructor(
             failedToSend = failedToSend,
             scheduledAt = scheduledAt,
             language = language,
+            statusId = statusId,
         )
 
         draftDao.insertOrReplace(draft)

app/src/main/java/com/keylesspalace/tusky/components/drafts/DraftsActivity.kt

@@ -111,6 +111,7 @@ class DraftsActivity : BaseActivity(), DraftActionListener {
                             visibility = draft.visibility,
                             scheduledAt = draft.scheduledAt,
                             language = draft.language,
+                            statusId = draft.statusId,
                         )
 
                         bottomSheet.state = BottomSheetBehavior.STATE_HIDDEN
@@ -147,6 +148,7 @@ class DraftsActivity : BaseActivity(), DraftActionListener {
             visibility = draft.visibility,
             scheduledAt = draft.scheduledAt,
             language = draft.language,
+            statusId = draft.statusId,
         )
 
         startActivity(ComposeActivity.startIntent(this, composeOptions))