Handle status edit histories with < 2 entries (#3747)
This can happen if the edit history has not been propogated to the user's server. If the edit history is missing then show an error with a link to the specifc Mastodon issue. Fixes #3743
This commit is contained in:
Nik Clayton
GitHub
parent
c3ad055092
commit
100673aa9c
5 changed files with 85 additions and 61 deletions
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@ -111,16 +111,31 @@ class ViewEditsFragment :
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binding.statusView.show()
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binding.initialProgressBar.hide()
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if (uiState.throwable is IOException) {
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binding.statusView.setup(R.drawable.elephant_offline, R.string.error_network) {
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when (uiState.throwable) {
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is IOException -> {
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binding.statusView.setup(
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R.drawable.elephant_offline,
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R.string.error_network
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) {
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viewModel.loadEdits(statusId, force = true)
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}
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} else {
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binding.statusView.setup(R.drawable.elephant_error, R.string.error_generic) {
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}
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is ViewEditsViewModel.MissingEditsException -> {
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binding.statusView.setup(
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R.drawable.elephant_friend_empty,
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R.string.error_missing_edits
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)
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}
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else -> {
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binding.statusView.setup(
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R.drawable.elephant_error,
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R.string.error_generic
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) {
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viewModel.loadEdits(statusId, force = true)
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}
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}
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}
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}
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is EditsUiState.Success -> {
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binding.swipeRefreshLayout.isRefreshing = false
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binding.recyclerView.show()
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@ -17,7 +17,7 @@ package com.keylesspalace.tusky.components.viewthread.edits
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import androidx.lifecycle.ViewModel
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import androidx.lifecycle.viewModelScope
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import at.connyduck.calladapter.networkresult.fold
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import at.connyduck.calladapter.networkresult.getOrElse
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import com.keylesspalace.tusky.components.viewthread.edits.TuskyTagHandler.Companion.DELETED_TEXT_EL
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import com.keylesspalace.tusky.components.viewthread.edits.TuskyTagHandler.Companion.INSERTED_TEXT_EL
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import com.keylesspalace.tusky.entity.StatusEdit
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@ -48,6 +48,9 @@ class ViewEditsViewModel @Inject constructor(private val api: MastodonApi) : Vie
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private val _uiState: MutableStateFlow<EditsUiState> = MutableStateFlow(EditsUiState.Initial)
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val uiState: StateFlow<EditsUiState> = _uiState.asStateFlow()
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/** The API call to fetch edit history returned less than two items */
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object MissingEditsException : Exception()
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fun loadEdits(statusId: String, force: Boolean = false, refreshing: Boolean = false) {
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if (!force && _uiState.value !is EditsUiState.Initial) return
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@ -58,8 +61,18 @@ class ViewEditsViewModel @Inject constructor(private val api: MastodonApi) : Vie
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}
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viewModelScope.launch {
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api.statusEdits(statusId).fold(
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{ edits ->
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val edits = api.statusEdits(statusId).getOrElse {
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_uiState.value = EditsUiState.Error(it)
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return@launch
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}
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// `edits` might have fewer than the minimum number of entries because of
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// https://github.com/mastodon/mastodon/issues/25398.
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if (edits.size < 2) {
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_uiState.value = EditsUiState.Error(MissingEditsException)
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return@launch
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}
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// Diff each status' content against the previous version, producing new
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// content with additional `ins` or `del` elements marking inserted or
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// deleted content.
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@ -110,11 +123,6 @@ class ViewEditsViewModel @Inject constructor(private val api: MastodonApi) : Vie
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_uiState.value = EditsUiState.Success(sortedEdits)
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}
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}
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},
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{ throwable ->
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_uiState.value = EditsUiState.Error(throwable)
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}
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)
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}
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}
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@ -1,6 +1,7 @@
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package com.keylesspalace.tusky.view
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import android.content.Context
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import android.text.method.LinkMovementMethod
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import android.util.AttributeSet
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import android.view.Gravity
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import android.view.LayoutInflater
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@ -44,6 +45,7 @@ class BackgroundMessageView @JvmOverloads constructor(
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clickListener: ((v: View) -> Unit)? = null
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) {
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binding.messageTextView.setText(messageRes)
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binding.messageTextView.movementMethod = LinkMovementMethod.getInstance()
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binding.imageView.setImageResource(imageRes)
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binding.button.setOnClickListener(clickListener)
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binding.button.visible(clickListener != null)
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@ -35,7 +35,7 @@
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android:scaleType="centerInside"
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android:src="@drawable/elephant_offline" />
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<TextView
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<com.keylesspalace.tusky.view.ClickableSpanTextView
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android:id="@+id/messageTextView"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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@ -764,10 +764,9 @@
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<string name="pref_reading_order_oldest_first">Oldest first</string>
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<string name="pref_reading_order_newest_first">Newest first</string>
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<!--@Tusky edited 19th December 2022 13:37 -->
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<string name="status_edit_info">Edited: %1$s</string>
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<!--@Tusky created 19th December 2022 13:12 -->
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<string name="status_created_info">Created: %1$s</string>
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<string name="error_missing_edits">Your server knows that this post was edited, but does not have a copy of the edits, so they can\'t be shown to you.\n\nThis is <a href="https://github.com/mastodon/mastodon/issues/25398">Mastodon issue #25398</a>.</string>
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<string name="a11y_label_loading_thread">Loading thread</string>
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<!--@knossos@fosstodon.org created 2023-01-07 -->
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