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Code Issues Packages Projects Releases Wiki Activity

Support for NIP-50: Search

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This commit is contained in:
Vitor Pamplona 2023-03-04 19:11:49 -05:00
parent 5cc851ecc8
commit 681e3eb44e
23 changed files with 258 additions and 38 deletions
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2
README.md
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@ -29,6 +29,7 @@ Amethyst brings the best social network to your Android phone. Just insert your
- [x] Identity Verification (NIP-05)
- [x] Long-form Content (NIP-23)
- [x] Parameterized Replaceable Events (NIP-33)
- [x] Online Relay Search (NIP-50)
- [ ] Local Database
- [ ] View Individual Reactions (Like, Boost, Zaps, Reports) per Post
- [ ] Bookmarks, Pinned Posts, Muted Events (NIP-51)
@ -38,7 +39,6 @@ Amethyst brings the best social network to your Android phone. Just insert your
- [ ] Generic Tags (NIP-12)
- [ ] Proof of Work in the Phone (NIP-13, NIP-20)
- [ ] Events with a Subject (NIP-14)
- [ ] Online Relay Search (NIP-50)
- [ ] Workspaces
- [ ] Expiration Support (NIP-40)
- [ ] Internationalization

18
app/src/main/java/com/vitorpamplona/amethyst/model/Account.kt
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@ -452,11 +452,25 @@ class Account(
}
}
// Takes a User's relay list and adds the types of feeds they are active for.
fun activeRelays(): Array<Relay>? {
return userProfile().relays?.map {
var usersRelayList = userProfile().relays?.map {
val localFeedTypes = localRelays.firstOrNull() { localRelay -> localRelay.url == it.key }?.feedTypes ?: FeedType.values().toSet()
Relay(it.key, it.value.read, it.value.write, localFeedTypes)
}?.toTypedArray()
} ?: return null
// Ugly, but forces nostr.band as the only search-supporting relay today.
// TODO: Remove when search becomes more available.
if (usersRelayList.none { it.activeTypes.contains(FeedType.SEARCH) }) {
usersRelayList = usersRelayList + Relay(
Constants.forcedRelayForSearch.url,
Constants.forcedRelayForSearch.read,
Constants.forcedRelayForSearch.write,
Constants.forcedRelayForSearch.feedTypes
)
}
return usersRelayList.toTypedArray()
}
fun convertLocalRelays(): Array<Relay> {

2
app/src/main/java/com/vitorpamplona/amethyst/service/NostrAccountDataSource.kt
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@ -8,7 +8,7 @@ import com.vitorpamplona.amethyst.service.model.ReportEvent
import com.vitorpamplona.amethyst.service.model.RepostEvent
import com.vitorpamplona.amethyst.service.relays.FeedType
import com.vitorpamplona.amethyst.service.relays.TypedFilter
import nostr.postr.JsonFilter
import com.vitorpamplona.amethyst.service.relays.JsonFilter
import com.vitorpamplona.amethyst.service.model.ContactListEvent
import com.vitorpamplona.amethyst.service.model.MetadataEvent
import com.vitorpamplona.amethyst.service.model.TextNoteEvent

2
app/src/main/java/com/vitorpamplona/amethyst/service/NostrChannelDataSource.kt
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@ -5,7 +5,7 @@ import com.vitorpamplona.amethyst.model.LocalCache
import com.vitorpamplona.amethyst.service.model.ChannelMessageEvent
import com.vitorpamplona.amethyst.service.relays.FeedType
import com.vitorpamplona.amethyst.service.relays.TypedFilter
import nostr.postr.JsonFilter
import com.vitorpamplona.amethyst.service.relays.JsonFilter
object NostrChannelDataSource: NostrDataSource("ChatroomFeed") {
var channel: Channel? = null

2
app/src/main/java/com/vitorpamplona/amethyst/service/NostrChatroomDataSource.kt
View File

@ -5,7 +5,7 @@ import com.vitorpamplona.amethyst.model.LocalCache
import com.vitorpamplona.amethyst.model.User
import com.vitorpamplona.amethyst.service.relays.FeedType
import com.vitorpamplona.amethyst.service.relays.TypedFilter
import nostr.postr.JsonFilter
import com.vitorpamplona.amethyst.service.relays.JsonFilter
import com.vitorpamplona.amethyst.service.model.PrivateDmEvent
object NostrChatroomDataSource: NostrDataSource("ChatroomFeed") {

2
app/src/main/java/com/vitorpamplona/amethyst/service/NostrChatroomListDataSource.kt
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@ -6,7 +6,7 @@ import com.vitorpamplona.amethyst.service.model.ChannelMessageEvent
import com.vitorpamplona.amethyst.service.model.ChannelMetadataEvent
import com.vitorpamplona.amethyst.service.relays.FeedType
import com.vitorpamplona.amethyst.service.relays.TypedFilter
import nostr.postr.JsonFilter
import com.vitorpamplona.amethyst.service.relays.JsonFilter
import com.vitorpamplona.amethyst.service.model.PrivateDmEvent
object NostrChatroomListDataSource: NostrDataSource("MailBoxFeed") {

2
app/src/main/java/com/vitorpamplona/amethyst/service/NostrGlobalDataSource.kt
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@ -4,7 +4,7 @@ import com.vitorpamplona.amethyst.service.model.ChannelMessageEvent
import com.vitorpamplona.amethyst.service.model.LongTextNoteEvent
import com.vitorpamplona.amethyst.service.relays.FeedType
import com.vitorpamplona.amethyst.service.relays.TypedFilter
import nostr.postr.JsonFilter
import com.vitorpamplona.amethyst.service.relays.JsonFilter
import com.vitorpamplona.amethyst.service.model.TextNoteEvent
object NostrGlobalDataSource: NostrDataSource("GlobalFeed") {

2
app/src/main/java/com/vitorpamplona/amethyst/service/NostrHomeDataSource.kt
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@ -8,7 +8,7 @@ import com.vitorpamplona.amethyst.service.relays.TypedFilter
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.GlobalScope
import kotlinx.coroutines.launch
import nostr.postr.JsonFilter
import com.vitorpamplona.amethyst.service.relays.JsonFilter
import com.vitorpamplona.amethyst.service.model.TextNoteEvent
object NostrHomeDataSource: NostrDataSource("HomeFeed") {

62
app/src/main/java/com/vitorpamplona/amethyst/service/NostrSearchEventOrUserDataSource.kt
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@ -1,17 +1,40 @@
package com.vitorpamplona.amethyst.service
import com.vitorpamplona.amethyst.model.decodePublicKey
import com.vitorpamplona.amethyst.service.model.ChannelCreateEvent
import com.vitorpamplona.amethyst.service.model.ChannelMessageEvent
import com.vitorpamplona.amethyst.service.model.ChannelMetadataEvent
import com.vitorpamplona.amethyst.service.model.LongTextNoteEvent
import com.vitorpamplona.amethyst.service.relays.FeedType
import com.vitorpamplona.amethyst.service.relays.TypedFilter
import nostr.postr.JsonFilter
import com.vitorpamplona.amethyst.service.relays.JsonFilter
import nostr.postr.bechToBytes
import com.vitorpamplona.amethyst.service.model.MetadataEvent
import com.vitorpamplona.amethyst.service.model.TextNoteEvent
import nostr.postr.toHex
object NostrSearchEventOrUserDataSource: NostrDataSource("SingleEventFeed") {
private var hexToWatch: String? = null
private var searchString: String? = null
private fun createAnythingWithIDFilter(): List<TypedFilter>? {
val mySearchString = searchString
if (mySearchString == null) {
return null
}
val hexToWatch = try {
if (mySearchString.startsWith("npub") || mySearchString.startsWith("nsec")) {
decodePublicKey(mySearchString).toHex()
} else if (mySearchString.startsWith("note")) {
mySearchString.bechToBytes().toHex()
} else {
mySearchString
}
} catch (e: Exception) {
// Usually when people add an incomplete npub or note.
null
}
if (hexToWatch == null) {
return null
}
@ -30,6 +53,22 @@ object NostrSearchEventOrUserDataSource: NostrDataSource("SingleEventFeed") {
kinds = listOf(MetadataEvent.kind),
authors = listOfNotNull(hexToWatch)
)
),
TypedFilter(
types = FeedType.values().toSet(),
filter = JsonFilter(
kinds = listOf(MetadataEvent.kind),
search = mySearchString,
limit = 20,
)
),
TypedFilter(
types = FeedType.values().toSet(),
filter = JsonFilter(
kinds = listOf(TextNoteEvent.kind, LongTextNoteEvent.kind, ChannelMetadataEvent.kind, ChannelCreateEvent.kind, ChannelMessageEvent.kind),
search = mySearchString,
limit = 20
)
)
)
}
@ -40,23 +79,12 @@ object NostrSearchEventOrUserDataSource: NostrDataSource("SingleEventFeed") {
searchChannel.typedFilters = createAnythingWithIDFilter()
}
fun search(eventId: String) {
try {
val hex = if (eventId.startsWith("npub") || eventId.startsWith("nsec")) {
decodePublicKey(eventId).toHex()
} else if (eventId.startsWith("note")) {
eventId.bechToBytes().toHex()
} else {
eventId
}
hexToWatch = hex
invalidateFilters()
} catch (e: Exception) {
// Usually when people add an incomplete npub or note.
}
fun search(searchString: String) {
this.searchString = searchString
invalidateFilters()
}
fun clear() {
hexToWatch = null
searchString = null
}
}

2
app/src/main/java/com/vitorpamplona/amethyst/service/NostrSingleChannelDataSource.kt
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@ -5,7 +5,7 @@ import com.vitorpamplona.amethyst.service.model.ChannelCreateEvent
import com.vitorpamplona.amethyst.service.model.ChannelMetadataEvent
import com.vitorpamplona.amethyst.service.relays.FeedType
import com.vitorpamplona.amethyst.service.relays.TypedFilter
import nostr.postr.JsonFilter
import com.vitorpamplona.amethyst.service.relays.JsonFilter
object NostrSingleChannelDataSource: NostrDataSource("SingleChannelFeed") {
private var channelsToWatch = setOf<String>()

2
app/src/main/java/com/vitorpamplona/amethyst/service/NostrSingleEventDataSource.kt
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@ -13,7 +13,7 @@ import com.vitorpamplona.amethyst.service.model.RepostEvent
import com.vitorpamplona.amethyst.service.relays.FeedType
import com.vitorpamplona.amethyst.service.relays.TypedFilter
import java.util.Date
import nostr.postr.JsonFilter
import com.vitorpamplona.amethyst.service.relays.JsonFilter
import com.vitorpamplona.amethyst.service.model.TextNoteEvent
object NostrSingleEventDataSource: NostrDataSource("SingleEventFeed") {

2
app/src/main/java/com/vitorpamplona/amethyst/service/NostrSingleUserDataSource.kt
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@ -4,7 +4,7 @@ import com.vitorpamplona.amethyst.model.User
import com.vitorpamplona.amethyst.service.model.ReportEvent
import com.vitorpamplona.amethyst.service.relays.FeedType
import com.vitorpamplona.amethyst.service.relays.TypedFilter
import nostr.postr.JsonFilter
import com.vitorpamplona.amethyst.service.relays.JsonFilter
import com.vitorpamplona.amethyst.service.model.MetadataEvent
object NostrSingleUserDataSource: NostrDataSource("SingleUserFeed") {

2
app/src/main/java/com/vitorpamplona/amethyst/service/NostrThreadDataSource.kt
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@ -3,7 +3,7 @@ package com.vitorpamplona.amethyst.service
import com.vitorpamplona.amethyst.model.ThreadAssembler
import com.vitorpamplona.amethyst.service.relays.FeedType
import com.vitorpamplona.amethyst.service.relays.TypedFilter
import nostr.postr.JsonFilter
import com.vitorpamplona.amethyst.service.relays.JsonFilter
object NostrThreadDataSource: NostrDataSource("SingleThreadFeed") {
private var eventToWatch: String? = null

2
app/src/main/java/com/vitorpamplona/amethyst/service/NostrUserProfileDataSource.kt
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@ -6,7 +6,7 @@ import com.vitorpamplona.amethyst.service.model.LnZapEvent
import com.vitorpamplona.amethyst.service.model.LongTextNoteEvent
import com.vitorpamplona.amethyst.service.relays.FeedType
import com.vitorpamplona.amethyst.service.relays.TypedFilter
import nostr.postr.JsonFilter
import com.vitorpamplona.amethyst.service.relays.JsonFilter
import com.vitorpamplona.amethyst.service.model.ContactListEvent
import com.vitorpamplona.amethyst.service.model.MetadataEvent
import com.vitorpamplona.amethyst.service.model.TextNoteEvent

1
app/src/main/java/com/vitorpamplona/amethyst/service/model/RepostEvent.kt
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@ -5,7 +5,6 @@ import com.vitorpamplona.amethyst.model.toHexKey
import com.vitorpamplona.amethyst.service.relays.Client
import java.util.Date
import nostr.postr.Utils
import nostr.postr.toHex
class RepostEvent (
id: HexKey,

6
app/src/main/java/com/vitorpamplona/amethyst/service/relays/Constants.kt
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@ -5,6 +5,7 @@ import com.vitorpamplona.amethyst.model.RelaySetupInfo
object Constants {
val activeTypes = setOf(FeedType.FOLLOWS, FeedType.PRIVATE_DMS)
val activeTypesGlobalChats = setOf(FeedType.FOLLOWS, FeedType.PUBLIC_CHATS, FeedType.PRIVATE_DMS, FeedType.GLOBAL)
val activeTypesSearch = setOf(FeedType.SEARCH)
fun convertDefaultRelays(): Array<Relay> {
return defaultRelays.map {
@ -44,5 +45,10 @@ object Constants {
RelaySetupInfo("wss://atlas.nostr.land", read = true, write = false, feedTypes = activeTypesGlobalChats),
RelaySetupInfo("wss://relay.orangepill.dev", read = true, write = false, feedTypes = activeTypesGlobalChats),
RelaySetupInfo("wss://relay.nostrati.com", read = true, write = false, feedTypes = activeTypesGlobalChats),
// Supporting NIP-50
RelaySetupInfo("wss://relay.nostr.band", read = true, write = false, feedTypes = activeTypesSearch),
)
val forcedRelayForSearch = RelaySetupInfo("wss://relay.nostr.band", read = true, write = false, feedTypes = activeTypesSearch)
}

134
app/src/main/java/com/vitorpamplona/amethyst/service/relays/JsonFilter.kt Normal file
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@ -0,0 +1,134 @@
package com.vitorpamplona.amethyst.service.relays
import com.google.gson.Gson
import com.google.gson.GsonBuilder
import com.google.gson.JsonArray
import com.google.gson.JsonObject
import com.vitorpamplona.amethyst.service.model.Event
import java.io.Serializable
import java.util.*
interface Filter {
fun match(event: Event): Boolean
fun toShortString(): String
}
class JsonFilter(
val ids: List<String>? = null,
val authors: List<String>? = null,
val kinds: List<Int>? = null,
val tags: Map<String, List<String>>? = null,
val since: Long? = null,
val until: Long? = null,
val limit: Int? = null,
val search: String? = null,
) : Filter, Serializable {
fun toJson(): String {
val jsonObject = JsonObject()
ids?.run {
jsonObject.add("ids", JsonArray().apply { ids.forEach { add(it) } })
}
authors?.run {
jsonObject.add("authors", JsonArray().apply { authors.forEach { add(it) } })
}
kinds?.run {
jsonObject.add("kinds", JsonArray().apply { kinds.forEach { add(it) } })
}
tags?.run {
entries.forEach { kv ->
jsonObject.add("#${kv.key}", JsonArray().apply { kv.value.forEach { add(it) } })
}
}
since?.run {
jsonObject.addProperty("since", since)
}
until?.run {
jsonObject.addProperty("until", until)
}
limit?.run {
jsonObject.addProperty("limit", limit)
}
search?.run {
jsonObject.addProperty("search", search)
}
return gson.toJson(jsonObject)
}
override fun match(event: Event): Boolean {
if (ids?.any { event.id == it } == false) return false
if (kinds?.any { event.kind == it } == false) return false
if (authors?.any { event.pubKey == it } == false) return false
tags?.forEach { tag ->
if (!event.tags.any { it.first() == tag.key && it[1] in tag.value }) return false
}
if (event.createdAt !in (since ?: Long.MIN_VALUE)..(until ?: Long.MAX_VALUE))
return false
return true
}
override fun toString(): String = "JsonFilter${toJson()}"
override fun toShortString(): String {
val list = ArrayList<String>()
ids?.run {
list.add("ids")
}
authors?.run {
list.add("authors")
}
kinds?.run {
list.add("kinds[${kinds.joinToString()}]")
}
tags?.run {
list.add("tags")
}
since?.run {
list.add("since")
}
until?.run {
list.add("until")
}
limit?.run {
list.add("limit")
}
search?.run {
list.add("search")
}
return list.joinToString()
}
companion object {
val gson: Gson = GsonBuilder().create()
fun fromJson(json: String): JsonFilter {
val jsonFilter = gson.fromJson(json, JsonObject::class.java)
return fromJson(jsonFilter)
}
val declaredFields = JsonFilter::class.java.declaredFields.map { it.name }
fun fromJson(json: JsonObject): JsonFilter {
// sanity check
if (json.keySet().any { !(it.startsWith("#") || it in declaredFields) }) {
println("Filter $json contains unknown parameters.")
}
return JsonFilter(
ids = if (json.has("ids")) json.getAsJsonArray("ids").map { it.asString } else null,
authors = if (json.has("authors")) json.getAsJsonArray("authors")
.map { it.asString } else null,
kinds = if (json.has("kinds")) json.getAsJsonArray("kinds")
.map { it.asInt } else null,
tags = json
.entrySet()
.filter { it.key.startsWith("#") }
.associate {
it.key.substring(1) to it.value.asJsonArray.map { it.asString }
}
.ifEmpty { null },
since = if (json.has("since")) json.get("since").asLong else null,
until = if (json.has("until")) json.get("until").asLong else null,
limit = if (json.has("limit")) json.get("limit").asInt else null,
search = if (json.has("search")) json.get("search").asString else null
)
}
}
}

2
app/src/main/java/com/vitorpamplona/amethyst/service/relays/Relay.kt
View File

@ -11,7 +11,7 @@ import okhttp3.WebSocket
import okhttp3.WebSocketListener
enum class FeedType {
FOLLOWS, PUBLIC_CHATS, PRIVATE_DMS, GLOBAL
FOLLOWS, PUBLIC_CHATS, PRIVATE_DMS, GLOBAL, SEARCH
}
class Relay(

2
app/src/main/java/com/vitorpamplona/amethyst/service/relays/TypedFilter.kt
View File

@ -3,7 +3,7 @@ package com.vitorpamplona.amethyst.service.relays
import com.google.gson.GsonBuilder
import com.google.gson.JsonArray
import com.google.gson.JsonObject
import nostr.postr.JsonFilter
import com.vitorpamplona.amethyst.service.relays.JsonFilter
class TypedFilter(
val types: Set<FeedType>,

19
app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewRelayListView.kt
View File

@ -27,6 +27,7 @@ import androidx.compose.material.icons.filled.DeleteSweep
import androidx.compose.material.icons.filled.Download
import androidx.compose.material.icons.filled.Groups
import androidx.compose.material.icons.filled.Public
import androidx.compose.material.icons.filled.Search
import androidx.compose.material.icons.filled.SyncProblem
import androidx.compose.material.icons.filled.Upload
import androidx.compose.runtime.Composable
@ -117,6 +118,7 @@ fun NewRelayListView(onClose: () -> Unit, account: Account, relayToAdd: String =
onTogglePrivateDMs = { postViewModel.toggleMessages(it) },
onTogglePublicChats = { postViewModel.togglePublicChats(it) },
onToggleGlobal = { postViewModel.toggleGlobal(it) },
onToggleSearch = { postViewModel.toggleSearch(it) },
onDelete = { postViewModel.deleteRelay(it) }
)
@ -213,6 +215,7 @@ fun ServerConfig(
onTogglePrivateDMs: (RelaySetupInfo) -> Unit,
onTogglePublicChats: (RelaySetupInfo) -> Unit,
onToggleGlobal: (RelaySetupInfo) -> Unit,
onToggleSearch: (RelaySetupInfo) -> Unit,
onDelete: (RelaySetupInfo) -> Unit) {
Column(Modifier.fillMaxWidth()) {
@ -309,6 +312,22 @@ fun ServerConfig(
)
)
}
IconButton(
modifier = Modifier.size(30.dp),
onClick = { onToggleSearch(item) }
) {
Icon(
imageVector = Icons.Default.Search,
stringResource(R.string.search_feed),
modifier = Modifier
.padding(horizontal = 5.dp)
.size(15.dp),
tint = if (item.feedTypes.contains(FeedType.SEARCH)) Color.Green else MaterialTheme.colors.onSurface.copy(
alpha = 0.32f
)
)
}
}
}

20
app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewRelayListViewModel.kt
View File

@ -4,7 +4,10 @@ import android.content.Context
import androidx.lifecycle.ViewModel
import com.vitorpamplona.amethyst.model.Account
import com.vitorpamplona.amethyst.model.RelaySetupInfo
import com.vitorpamplona.amethyst.service.model.ContactListEvent
import com.vitorpamplona.amethyst.service.relays.Constants
import com.vitorpamplona.amethyst.service.relays.FeedType
import com.vitorpamplona.amethyst.service.relays.Relay
import com.vitorpamplona.amethyst.service.relays.RelayPool
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.asStateFlow
@ -31,7 +34,15 @@ class NewRelayListViewModel: ViewModel() {
fun clear(ctx: Context) {
_relays.update {
val relayFile = account.userProfile().relays
var relayFile = account.userProfile().relays
// Ugly, but forces nostr.band as the only search-supporting relay today.
// TODO: Remove when search becomes more available.
if (relayFile?.none { it.key == Constants.forcedRelayForSearch.url } == true) {
relayFile = relayFile + Pair(
Constants.forcedRelayForSearch.url, ContactListEvent.ReadWrite(Constants.forcedRelayForSearch.read, Constants.forcedRelayForSearch.write)
)
}
if (relayFile != null)
relayFile.map {
@ -112,6 +123,13 @@ class NewRelayListViewModel: ViewModel() {
it.updated(relay, relay.copy( feedTypes = newTypes ))
}
}
fun toggleSearch(relay: RelaySetupInfo) {
val newTypes = togglePresenceInSet(relay.feedTypes, FeedType.SEARCH)
_relays.update {
it.updated(relay, relay.copy( feedTypes = newTypes ))
}
}
}
fun <T> Iterable<T>.updated(old: T, new: T): List<T> = map { if (it == old) new else it }

7
app/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/SearchScreen.kt
View File

@ -69,6 +69,7 @@ import com.vitorpamplona.amethyst.ui.screen.NostrGlobalFeedViewModel
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.FlowPreview
import kotlinx.coroutines.delay
import kotlinx.coroutines.flow.collectLatest
import kotlinx.coroutines.flow.debounce
import kotlinx.coroutines.flow.distinctUntilChanged
import kotlinx.coroutines.flow.filter
@ -150,12 +151,12 @@ private fun SearchBar(accountViewModel: AccountViewModel, navController: NavCont
.filter { it.isNotBlank() }
.distinctUntilChanged()
.debounce(300)
.collect {
.collectLatest {
if (it.removePrefix("npub").removePrefix("note").length >= 4)
onlineSearch.search(it)
onlineSearch.search(it.trim())
searchResults.value = LocalCache.findUsersStartingWith(it)
searchResultsNotes.value = LocalCache.findNotesStartingWith(it)
searchResultsNotes.value = LocalCache.findNotesStartingWith(it).sortedBy { it.createdAt() }
searchResultsChannels.value = LocalCache.findChannelsStartingWith(it)
}
}

1
app/src/main/res/values/strings.xml
View File

@ -79,6 +79,7 @@
<string name="private_message_feed">Private Message Feed</string>
<string name="public_chat_feed">Public Chat Feed</string>
<string name="global_feed">Global Feed</string>
<string name="search_feed">Search Feed</string>
<string name="add_a_relay">Add a Relay</string>
<string name="display_name">Display Name</string>
<string name="my_display_name">My display name</string>