Adds hidden words filter to search, hashtag and geotag feeds

Applies hidden words even to hashtags that were not included in the content of the event.
Pre-process search to avoid showing and hiding posts after hidden words where processed by the UI.

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

@@ -2043,7 +2043,10 @@ object LocalCache {
         }
     }
 
-    fun findUsersStartingWith(username: String): List<User> {
+    fun findUsersStartingWith(
+        username: String,
+        forAccount: Account?,
+    ): List<User> {
         checkNotInMainThread()
 
         val key = decodePublicKeyAsHexOrNull(username)
@@ -2056,13 +2059,19 @@ object LocalCache {
         }
 
         return users.filter { _, user: User ->
+            (
                 (user.anyNameStartsWith(username)) ||
                     user.pubkeyHex.startsWith(username, true) ||
                     user.pubkeyNpub().startsWith(username, true)
+            ) &&
+                (forAccount == null || (!forAccount.isHidden(user) && !user.containsAny(forAccount.flowHiddenUsers.value.hiddenWordsCase)))
         }
     }
 
-    fun findNotesStartingWith(text: String): List<Note> {
+    fun findNotesStartingWith(
+        text: String,
+        forAccount: Account,
+    ): List<Note> {
         checkNotInMainThread()
 
         val key = decodeEventIdAsHexOrNull(text)
@@ -2089,11 +2098,19 @@ object LocalCache {
                 note.idHex.startsWith(text, true) ||
                 note.idNote().startsWith(text, true)
             ) {
+                if (!note.isHiddenFor(forAccount.flowHiddenUsers.value)) {
                     return@filter true
+                } else {
+                    return@filter false
+                }
             }
 
             if (note.event?.isContentEncoded() == false) {
+                if (!note.isHiddenFor(forAccount.flowHiddenUsers.value)) {
                     return@filter note.event?.content()?.contains(text, true) ?: false
+                } else {
+                    return@filter false
+                }
             }
 
             return@filter false
@@ -2112,11 +2129,19 @@ object LocalCache {
                 if (addressable.event?.matchTag1With(text) == true ||
                     addressable.idHex.startsWith(text, true)
                 ) {
+                    if (!addressable.isHiddenFor(forAccount.flowHiddenUsers.value)) {
                         return@filter true
+                    } else {
+                        return@filter false
+                    }
                 }
 
                 if (addressable.event?.isContentEncoded() == false) {
+                    if (!addressable.isHiddenFor(forAccount.flowHiddenUsers.value)) {
                         return@filter addressable.event?.content()?.contains(text, true) ?: false
+                    } else {
+                        return@filter false
+                    }
                 }
 
                 return@filter false

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

@@ -771,29 +771,11 @@ open class Note(
                 return true
             }
 
-            if (author?.toBestDisplayName()?.containsAny(accountChoices.hiddenWordsCase) == true) {
+            if (thisEvent.anyHashTag { it.containsAny(accountChoices.hiddenWordsCase) }) {
                 return true
             }
 
-            if (author?.profilePicture()?.containsAny(accountChoices.hiddenWordsCase) == true) {
+            if (author?.containsAny(accountChoices.hiddenWordsCase) == true) return true
-                return true
-            }
-
-            if (author?.info?.banner?.containsAny(accountChoices.hiddenWordsCase) == true) {
-                return true
-            }
-
-            if (author?.info?.about?.containsAny(accountChoices.hiddenWordsCase) == true) {
-                return true
-            }
-
-            if (author?.info?.lud06?.containsAny(accountChoices.hiddenWordsCase) == true) {
-                return true
-            }
-
-            if (author?.info?.lud16?.containsAny(accountChoices.hiddenWordsCase) == true) {
-                return true
-            }
         }
 
         return false

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

@@ -45,6 +45,8 @@ import com.vitorpamplona.quartz.events.MetadataEvent
 import com.vitorpamplona.quartz.events.ReportEvent
 import com.vitorpamplona.quartz.events.UserMetadata
 import com.vitorpamplona.quartz.events.toImmutableListOfLists
+import com.vitorpamplona.quartz.utils.DualCase
+import com.vitorpamplona.quartz.utils.containsAny
 import kotlinx.collections.immutable.persistentSetOf
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.MutableStateFlow
@@ -370,6 +372,36 @@ class User(
                 (it.event as ReportEvent).reportedAuthor().any { it.reportType == type }
         } != null
 
+    fun containsAny(hiddenWordsCase: List<DualCase>): Boolean {
+        if (hiddenWordsCase.isEmpty()) return false
+
+        if (toBestDisplayName().containsAny(hiddenWordsCase)) {
+            return true
+        }
+
+        if (profilePicture()?.containsAny(hiddenWordsCase) == true) {
+            return true
+        }
+
+        if (info?.banner?.containsAny(hiddenWordsCase) == true) {
+            return true
+        }
+
+        if (info?.about?.containsAny(hiddenWordsCase) == true) {
+            return true
+        }
+
+        if (info?.lud06?.containsAny(hiddenWordsCase) == true) {
+            return true
+        }
+
+        if (info?.lud16?.containsAny(hiddenWordsCase) == true) {
+            return true
+        }
+
+        return false
+    }
+
     fun anyNameStartsWith(username: String): Boolean = info?.anyNameStartsWith(username) ?: false
 
     var liveSet: UserLiveSet? = null

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/actions/EditPostViewModel.kt

@@ -274,7 +274,7 @@ open class EditPostViewModel : ViewModel() {
                 viewModelScope.launch(Dispatchers.IO) {
                     userSuggestions =
                         LocalCache
-                            .findUsersStartingWith(lastWord.removePrefix("@"))
+                            .findUsersStartingWith(lastWord.removePrefix("@"), account)
                             .sortedWith(compareBy({ account?.isFollowing(it) }, { it.toBestDisplayName() }, { it.pubkeyHex }))
                             .reversed()
                 }

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewPostViewModel.kt

@@ -1002,7 +1002,7 @@ open class NewPostViewModel : ViewModel() {
                 viewModelScope.launch(Dispatchers.IO) {
                     userSuggestions =
                         LocalCache
-                            .findUsersStartingWith(lastWord.removePrefix("@"))
+                            .findUsersStartingWith(lastWord.removePrefix("@"), account)
                             .sortedWith(compareBy({ account?.isFollowing(it) }, { it.toBestDisplayName() }, { it.pubkeyHex }))
                             .reversed()
                 }
@@ -1031,7 +1031,7 @@ open class NewPostViewModel : ViewModel() {
                 viewModelScope.launch(Dispatchers.IO) {
                     userSuggestions =
                         LocalCache
-                            .findUsersStartingWith(lastWord.removePrefix("@"))
+                            .findUsersStartingWith(lastWord.removePrefix("@"), account)
                             .sortedWith(compareBy({ account?.isFollowing(it) }, { it.toBestDisplayName() }, { it.pubkeyHex }))
                             .reversed()
                 }
@@ -1059,7 +1059,7 @@ open class NewPostViewModel : ViewModel() {
                 viewModelScope.launch(Dispatchers.IO) {
                     userSuggestions =
                         LocalCache
-                            .findUsersStartingWith(lastWord.removePrefix("@"))
+                            .findUsersStartingWith(lastWord.removePrefix("@"), account)
                             .sortedWith(
                                 compareBy(
                                     { account?.isFollowing(it) },

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/dal/GeoHashFeedFilter.kt

@@ -64,6 +64,7 @@ class GeoHashFeedFilter(
                 it.event is AudioHeaderEvent
         ) &&
             it.event?.isTaggedGeoHash(geoTag) == true &&
+            !it.isHiddenFor(account.flowHiddenUsers.value) &&
             account.isAcceptable(it)
 
     override fun sort(collection: Set<Note>): List<Note> = collection.sortedWith(DefaultFeedOrder)

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/dal/HashtagFeedFilter.kt

@@ -68,6 +68,7 @@ class HashtagFeedFilter(
                 it.event is AudioHeaderEvent
         ) &&
             it.event?.isTaggedHash(hashTag) == true &&
+            !it.isHiddenFor(account.flowHiddenUsers.value) &&
             account.isAcceptable(it)
 
     override fun sort(collection: Set<Note>): List<Note> = collection.sortedWith(DefaultFeedOrder)

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

@@ -75,7 +75,7 @@ class SearchBarViewModel(
         _hashtagResults.emit(findHashtags(searchValue))
         _searchResultsUsers.emit(
             LocalCache
-                .findUsersStartingWith(searchValue)
+                .findUsersStartingWith(searchValue, account)
                 .sortedWith(
                     compareBy(
                         { it.toBestDisplayName().startsWith(searchValue, true) },
@@ -86,7 +86,7 @@ class SearchBarViewModel(
         )
         _searchResultsNotes.emit(
             LocalCache
-                .findNotesStartingWith(searchValue)
+                .findNotesStartingWith(searchValue, account)
                 .sortedWith(compareBy({ it.createdAt() }, { it.idHex }))
                 .reversed(),
         )

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

@@ -36,7 +36,6 @@ import androidx.compose.foundation.lazy.itemsIndexed
 import androidx.compose.foundation.lazy.rememberLazyListState
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.foundation.text.KeyboardOptions
-import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.HorizontalDivider
 import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
@@ -178,7 +177,7 @@ fun WatchAccountForSearchScreen(accountViewModel: AccountViewModel) {
     }
 }
 
-@OptIn(FlowPreview::class, ExperimentalMaterial3Api::class)
+@OptIn(FlowPreview::class)
 @Composable
 private fun SearchBar(
     searchBarViewModel: SearchBarViewModel,

quartz/src/main/java/com/vitorpamplona/quartz/events/Event.kt

@@ -107,6 +107,19 @@ open class Event(
         }
     }
 
+    override fun anyHashTag(onEach: (str: String) -> Boolean) = anyTagged("t", onEach)
+
+    private fun anyTagged(
+        tagName: String,
+        onEach: (str: String) -> Boolean,
+    ) = tags.any {
+        if (it.size > 1 && it[0] == tagName) {
+            onEach(it[1])
+        } else {
+            false
+        }
+    }
+
     override fun <R> mapTaggedEvent(map: (eventId: HexKey) -> R) = mapTagged("e", map)
 
     override fun <R> mapTaggedAddress(map: (address: String) -> R) = mapTagged("a", map)

quartz/src/main/java/com/vitorpamplona/quartz/events/EventInterface.kt

@@ -121,6 +121,8 @@ interface EventInterface {
 
     fun forEachHashTag(onEach: (eventId: HexKey) -> Unit)
 
+    fun anyHashTag(onEach: (str: String) -> Boolean): Boolean
+
     fun <R> mapTaggedEvent(map: (eventId: HexKey) -> R): List<R>
 
     fun <R> mapTaggedAddress(map: (address: String) -> R): List<R>