feat: add "View results" option to polls that prevents voting after viewing

Adds a "View results" link below poll voting options. Once a user clicks it,
the poll results are shown and the user can no longer vote on that poll.
The viewed state is persisted in account settings via SharedPreferences.

https://claude.ai/code/session_01EkUYT4giQPUvbAJZ54o1se

amethyst/src/main/java/com/vitorpamplona/amethyst/LocalPreferences.kt

@@ -131,6 +131,7 @@ private object PrefKeys {
     const val SIGNER_PACKAGE_NAME = "signer_package_name"
     const val HAS_DONATED_IN_VERSION = "has_donated_in_version"
     const val DISMISSED_POLL_NOTE_IDS = "dismissed_poll_note_ids"
+    const val VIEWED_POLL_RESULT_NOTE_IDS = "viewed_poll_result_note_ids"
     const val PENDING_ATTESTATIONS = "pending_attestations"
 
     const val ALL_ACCOUNT_INFO = "all_saved_accounts_info"
@@ -391,6 +392,7 @@ object LocalPreferences {
                     )
                     putStringSet(PrefKeys.HAS_DONATED_IN_VERSION, settings.hasDonatedInVersion.value)
                     putStringSet(PrefKeys.DISMISSED_POLL_NOTE_IDS, settings.dismissedPollNoteIds.value)
+                    putStringSet(PrefKeys.VIEWED_POLL_RESULT_NOTE_IDS, settings.viewedPollResultNoteIds.value)
 
                     putString(
                         PrefKeys.PENDING_ATTESTATIONS,
@@ -476,6 +478,7 @@ object LocalPreferences {
                     val hideNIP17WarningDialog = getBoolean(PrefKeys.HIDE_NIP_17_WARNING_DIALOG, false)
                     val hasDonatedInVersion = getStringSet(PrefKeys.HAS_DONATED_IN_VERSION, null) ?: setOf()
                     val dismissedPollNoteIds = getStringSet(PrefKeys.DISMISSED_POLL_NOTE_IDS, null) ?: setOf()
+                    val viewedPollResultNoteIds = getStringSet(PrefKeys.VIEWED_POLL_RESULT_NOTE_IDS, null) ?: setOf()
                     val localRelayServers = getStringSet(PrefKeys.LOCAL_RELAY_SERVERS, null) ?: setOf()
 
                     val defaultHomeFollowListStr = getString(PrefKeys.DEFAULT_HOME_FOLLOW_LIST, null)
@@ -598,6 +601,7 @@ object LocalPreferences {
                         lastReadPerRoute = MutableStateFlow(lastReadPerRoute.await()),
                         hasDonatedInVersion = MutableStateFlow(hasDonatedInVersion),
                         dismissedPollNoteIds = MutableStateFlow(dismissedPollNoteIds),
+                        viewedPollResultNoteIds = MutableStateFlow(viewedPollResultNoteIds),
                         pendingAttestations = MutableStateFlow(pendingAttestations.await()),
                         backupNipA3PaymentTargets = latestPaymentTargets.await(),
                     )

amethyst/src/main/java/com/vitorpamplona/amethyst/model/Account.kt

@@ -2152,6 +2152,10 @@ class Account(
 
     fun dismissPollNotification(noteId: String) = settings.dismissPollNotification(noteId)
 
+    fun hasViewedPollResults(noteId: String) = settings.hasViewedPollResults(noteId)
+
+    fun markPollResultsViewed(noteId: String) = settings.markPollResultsViewed(noteId)
+
     init {
         Log.d("AccountRegisterObservers", "Init")
 

amethyst/src/main/java/com/vitorpamplona/amethyst/model/AccountSettings.kt

@@ -194,6 +194,7 @@ class AccountSettings(
     val lastReadPerRoute: MutableStateFlow<Map<String, MutableStateFlow<Long>>> = MutableStateFlow(mapOf()),
     val hasDonatedInVersion: MutableStateFlow<Set<String>> = MutableStateFlow(setOf()),
     val dismissedPollNoteIds: MutableStateFlow<Set<String>> = MutableStateFlow(setOf()),
+    val viewedPollResultNoteIds: MutableStateFlow<Set<String>> = MutableStateFlow(setOf()),
     val pendingAttestations: MutableStateFlow<Map<HexKey, String>> = MutableStateFlow(mapOf()),
     var backupNipA3PaymentTargets: PaymentTargetsEvent? = null,
 ) : EphemeralChatRepository,
@@ -695,6 +696,21 @@ class AccountSettings(
         }
     }
 
+    // ---
+    // viewed poll results
+    // ---
+
+    fun hasViewedPollResults(noteId: String) = viewedPollResultNoteIds.value.contains(noteId)
+
+    fun markPollResultsViewed(noteId: String) {
+        if (!viewedPollResultNoteIds.value.contains(noteId)) {
+            viewedPollResultNoteIds.update {
+                it + noteId
+            }
+            saveAccountSettings()
+        }
+    }
+
     // ----
     // last read flows
     // ----

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/note/types/Poll.kt

@@ -265,11 +265,14 @@ fun RenderPollCard(
 
     RenderPollCard(
         card = card,
+        noteId = event.id,
         onRespond = { responses ->
             accountViewModel.launchSigner {
                 accountViewModel.account.pollRespond(event, responses)
             }
         },
+        onViewResults = { accountViewModel.markPollResultsViewed(event.id) },
+        hasViewedResults = { accountViewModel.hasViewedPollResults(event.id) },
         resultContent = galleryUser,
         labelContent = labelContent,
     )
@@ -278,7 +281,10 @@ fun RenderPollCard(
 @Composable
 fun RenderPollCard(
     card: PollCard,
+    noteId: String = "",
     onRespond: (Set<String>) -> Unit,
+    onViewResults: () -> Unit = {},
+    hasViewedResults: () -> Boolean = { false },
     resultContent: @Composable RowScope.(user: User) -> Unit,
     labelContent: @Composable ColumnScope.(code: String, label: String) -> Unit,
 ) {
@@ -296,12 +302,29 @@ fun RenderPollCard(
                 val haveIVoted by card.haveIVotedFlow.collectAsStateWithLifecycle(haveIVoted)
                 if (haveIVoted) {
                     RenderResults(card, resultContent, labelContent)
-                } else if (card.hasEnded()) {
+                } else if (card.hasEnded() || hasViewedResults()) {
                     RenderResults(card, resultContent, labelContent)
                 } else {
-                    when (card.type) {
-                        PollType.SINGLE_CHOICE -> RenderSingleChoiceOptions(card, labelContent, onRespond)
-                        PollType.MULTI_CHOICE -> RenderMultiChoiceOptions(card, labelContent, onRespond)
+                    var viewingResults by remember { mutableStateOf(false) }
+                    if (viewingResults) {
+                        RenderResults(card, resultContent, labelContent)
+                    } else {
+                        when (card.type) {
+                            PollType.SINGLE_CHOICE -> RenderSingleChoiceOptions(card, labelContent, onRespond)
+                            PollType.MULTI_CHOICE -> RenderMultiChoiceOptions(card, labelContent, onRespond)
+                        }
+
+                        Text(
+                            text = stringRes(R.string.poll_view_results),
+                            style = MaterialTheme.typography.bodySmall,
+                            color = MaterialTheme.colorScheme.primary,
+                            modifier =
+                                Modifier
+                                    .clickable {
+                                        onViewResults()
+                                        viewingResults = true
+                                    }.padding(vertical = 4.dp),
+                        )
                     }
                 }
             }
@@ -615,7 +638,7 @@ fun RenderPollManualPreview() {
 
     ThemeComparisonColumn {
         Column(Modifier.padding(10.dp)) {
-            RenderPollCard(poll, {}, {}) { _, label ->
+            RenderPollCard(poll, onRespond = {}, resultContent = {}) { _, label ->
                 Text(
                     text = label,
                 )
@@ -663,7 +686,7 @@ fun RenderPollManualLongPreview() {
 
     ThemeComparisonColumn {
         Column(Modifier.padding(10.dp)) {
-            RenderPollCard(poll, {}, {}) { _, label ->
+            RenderPollCard(poll, onRespond = {}, resultContent = {}) { _, label ->
                 Text(
                     text = label,
                 )

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/AccountViewModel.kt

@@ -1128,6 +1128,10 @@ class AccountViewModel(
 
     fun dismissPollNotification(noteId: String) = account.dismissPollNotification(noteId)
 
+    fun hasViewedPollResults(noteId: String) = account.hasViewedPollResults(noteId)
+
+    fun markPollResultsViewed(noteId: String) = account.markPollResultsViewed(noteId)
+
     fun dontTranslateFrom() = account.settings.syncedSettings.languages.dontTranslateFrom.value
 
     fun translateTo() = account.settings.syncedSettings.languages.translateTo.value

amethyst/src/main/res/values/strings.xml

@@ -1789,6 +1789,7 @@
     <string name="connected">Connected</string>
     <string name="social_proof">Social proof</string>
     <string name="poll_submit">Submit</string>
+    <string name="poll_view_results">View results</string>
     <string name="restart">Restart</string>
     <string name="chess_accept">Accept</string>
     <string name="chess_decline">Decline</string>