buzzert/Kordophone
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Implements message loading and display

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This commit is contained in:
James Magahern
2023-08-24 00:45:18 -07:00
parent 4add2b4674
commit 6375900710
14 changed files with 371 additions and 132 deletions
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19
backend/src/main/java/net/buzzert/kordophone/backend/db/CachedChatDatabase.kt
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@@ -57,7 +57,7 @@ class CachedChatDatabase (private val realmConfig: RealmConfiguration) {
.first()
.messages
.asFlow()
.map { it.list.map { it.toMessage(conversation) } }
.map { it.set.map { it.toMessage(conversation) } }
}
fun updateConversations(incomingConversations: List<ModelConversation>) = realm.writeBlocking {
@@ -111,15 +111,24 @@ class CachedChatDatabase (private val realmConfig: RealmConfiguration) {
return items.map { it.toConversation() }
}
fun writeMessages(messages: List<ModelMessage>, conversation: ModelConversation) {
fun writeMessages(messages: List<ModelMessage>, conversation: ModelConversation, outgoing: Boolean = false) {
val dbConversation = getManagedConversationByGuid(conversation.guid)
realm.writeBlocking {
val dbMessages = messages
.map { it.toDatabaseMessage() }
.map { it.toDatabaseMessage(outgoing = outgoing) }
.map { copyToRealm(it, updatePolicy = UpdatePolicy.ALL) }
val obj = findLatest(dbConversation)
obj!!.messages.addAll(dbMessages)
findLatest(dbConversation)?.messages?.addAll(dbMessages)
}
}
fun clearOutgoingMessages() {
realm.query(Message::class, "isOutgoing == true").find().forEach { message ->
realm.writeBlocking {
findLatest(message)?.let {
delete(it)
}
}
}
}

6
backend/src/main/java/net/buzzert/kordophone/backend/db/model/Conversation.kt
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@@ -2,10 +2,12 @@ package net.buzzert.kordophone.backend.db.model
import io.realm.kotlin.Realm
import io.realm.kotlin.ext.realmListOf
import io.realm.kotlin.ext.realmSetOf
import io.realm.kotlin.ext.toRealmList
import io.realm.kotlin.types.RealmInstant
import io.realm.kotlin.types.RealmList
import io.realm.kotlin.types.RealmObject
import io.realm.kotlin.types.RealmSet
import io.realm.kotlin.types.annotations.PrimaryKey
import net.buzzert.kordophone.backend.model.GUID
import org.mongodb.kbson.ObjectId
@@ -23,7 +25,7 @@ open class Conversation(
var unreadCount: Int,
var lastMessagePreview: String?,
var messages: RealmList<Message>,
var messages: RealmSet<Message>,
): RealmObject
{
constructor() : this(
@@ -35,7 +37,7 @@ open class Conversation(
unreadCount = 0,
lastMessagePreview = null,
messages = realmListOf<Message>()
messages = realmSetOf<Message>()
)
fun toConversation(): ModelConversation {

5
backend/src/main/java/net/buzzert/kordophone/backend/db/model/Message.kt
View File

@@ -22,6 +22,7 @@ open class Message(
var date: RealmInstant,
var conversationGUID: GUID,
var isOutgoing: Boolean,
): RealmObject
{
constructor() : this(
@@ -30,6 +31,7 @@ open class Message(
sender = null,
date = RealmInstant.now(),
conversationGUID = ObjectId().toString(),
isOutgoing = false,
)
fun toMessage(parentConversation: ModelConversation): ModelMessage {
@@ -43,7 +45,7 @@ open class Message(
}
}
fun ModelMessage.toDatabaseMessage(): Message {
fun ModelMessage.toDatabaseMessage(outgoing: Boolean = false): Message {
val from = this
return Message().apply {
text = from.text
@@ -51,5 +53,6 @@ fun ModelMessage.toDatabaseMessage(): Message {
sender = from.sender
date = from.date.toInstant().toRealmInstant()
conversationGUID = from.conversation.guid
isOutgoing = outgoing
}
}

14
backend/src/main/java/net/buzzert/kordophone/backend/model/Conversation.kt
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@@ -2,6 +2,7 @@ package net.buzzert.kordophone.backend.model
import com.google.gson.annotations.SerializedName
import java.util.Date
import java.util.UUID
typealias GUID = String
@@ -27,6 +28,19 @@ data class Conversation(
@SerializedName("lastMessage")
var lastMessage: Message?,
) {
companion object {
fun generate(): Conversation {
return Conversation(
guid = UUID.randomUUID().toString(),
date = Date(),
participants = listOf("foo@foo.com"),
displayName = null,
unreadCount = 0,
lastMessagePreview = null,
lastMessage = null,
)
}
}
fun formattedDisplayName(): String {
return displayName ?: participants.joinToString(", ")

22
backend/src/main/java/net/buzzert/kordophone/backend/model/Message.kt
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@@ -2,6 +2,7 @@ package net.buzzert.kordophone.backend.model
import com.google.gson.annotations.SerializedName
import java.util.Date
import java.util.UUID
data class Message(
@SerializedName("guid")
@@ -19,6 +20,18 @@ data class Message(
@Transient
var conversation: Conversation,
) {
companion object {
fun generate(text: String, conversation: Conversation = Conversation.generate(), sender: String? = null): Message {
return Message(
guid = UUID.randomUUID().toString(),
text = text,
sender = sender,
date = Date(),
conversation = conversation,
)
}
}
override fun toString(): String {
return "Message(guid=$guid, text=$text, sender=$sender, date=$date, parent=${conversation.guid})"
}
@@ -35,4 +48,13 @@ data class Message(
conversation.guid == o.conversation.guid
)
}
override fun hashCode(): Int {
var result = guid.hashCode()
result = 31 * result + text.hashCode()
result = 31 * result + (sender?.hashCode() ?: 0)
result = 31 * result + date.hashCode()
result = 31 * result + conversation.guid.hashCode()
return result
}
}

37
backend/src/main/java/net/buzzert/kordophone/backend/server/ChatRepository.kt
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@@ -5,8 +5,12 @@ import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Job
import kotlinx.coroutines.cancel
import kotlinx.coroutines.channels.Channel
import kotlinx.coroutines.channels.consumeEach
import kotlinx.coroutines.flow.Flow
import kotlinx.coroutines.flow.MutableSharedFlow
import kotlinx.coroutines.flow.SharedFlow
import kotlinx.coroutines.flow.collect
import kotlinx.coroutines.flow.collectLatest
import kotlinx.coroutines.flow.onEach
import kotlinx.coroutines.launch
import kotlinx.coroutines.runBlocking
@@ -34,7 +38,8 @@ class ChatRepository(
get() = database.fetchConversations()
// Channel that's signaled when an outgoing message is delivered.
val messageDeliveredChannel = Channel<MessageDeliveredEvent>()
val messageDeliveredChannel: SharedFlow<MessageDeliveredEvent>
get() = _messageDeliveredChannel
// Changes Flow
val conversationChanges: Flow<List<Conversation>>
@@ -66,6 +71,7 @@ class ChatRepository(
private val apiInterface = apiClient.getAPIInterface()
private val outgoingMessageQueue: ArrayBlockingQueue<OutgoingMessageInfo> = ArrayBlockingQueue(16)
private var outgoingMessageThread: Thread? = null
private val _messageDeliveredChannel = MutableSharedFlow<MessageDeliveredEvent>()
private val updateMonitor = UpdateMonitor(apiClient)
private var updateWatchJob: Job? = null
@@ -83,6 +89,9 @@ class ChatRepository(
launch {
updateMonitor.messageAdded.collect { handleMessageAddedUpdate(it) }
}
launch {
messageDeliveredChannel.collectLatest { handleMessageDelivered(it) }
}
}
updateMonitor.beginMonitoringUpdates()
@@ -124,15 +133,27 @@ class ChatRepository(
val serverConversations = fetchConversations()
database.updateConversations(serverConversations)
// Delete outgoing conversations
// This is an unfortunate limitation in that we don't know what outgoing GUIDs are going to
// be before we send them.
// TODO: Keep this in mind when syncing messages after a certain GUID. The outgoing GUIDs are fake.
database.clearOutgoingMessages()
// Sync top N number of conversations' message content
Log.d(REPO_LOG, "Synchronizing messages")
val sortedConversations = conversations.sortedBy { it.date }.reversed()
for (conversation in sortedConversations.take(CONVERSATION_MESSAGE_SYNC_COUNT)) {
val messages = fetchMessages(conversation, limit = 15)
database.writeMessages(messages, conversation)
synchronizeConversation(conversation)
}
}
suspend fun synchronizeConversation(conversation: Conversation) {
// TODO: Should only fetch messages after the last GUID we know about.
// But keep in mind that outgoing message GUIDs are fake...
val messages = fetchMessages(conversation, limit = 15)
database.writeMessages(messages, conversation)
}
fun close() {
database.close()
}
@@ -164,6 +185,14 @@ class ChatRepository(
database.writeMessages(listOf(message), message.conversation)
}
private fun handleMessageDelivered(event: MessageDeliveredEvent) {
Log.d(REPO_LOG, "Handling successful delivery event")
// Unfortunate protocol reality: the server doesn't tell us about new messages that are from us,
// so we have to explicitly handle this like a messageAddedUpdate.
database.writeMessages(listOf(event.message), event.conversation, outgoing = true)
}
private fun outgoingMessageQueueMain() {
Log.d(REPO_LOG, "Outgoing Message Queue Main")
while (true) {
@@ -185,7 +214,7 @@ class ChatRepository(
if (result.isSuccessful) {
Log.d(REPO_LOG, "Successfully sent message.")
messageDeliveredChannel.send(MessageDeliveredEvent(guid, message, conversation))
_messageDeliveredChannel.emit(MessageDeliveredEvent(guid, message, conversation))
} else {
Log.e(REPO_LOG, "Error sending message. Enqueuing for retry.")
outgoingMessageQueue.add(it)

2
backend/src/main/java/net/buzzert/kordophone/backend/server/UpdateMonitor.kt
View File

@@ -16,7 +16,7 @@ import okio.ByteString
import retrofit2.converter.gson.GsonConverterFactory
import java.lang.reflect.Type
const val UPMON_LOG: String = "ChatRepository"
const val UPMON_LOG: String = "UpdateMonitor"
class UpdateMonitor(private val client: APIClient) : WebSocketListener() {
// Flow for getting conversation changed notifications

3
backend/src/test/java/net/buzzert/kordophone/backend/BackendTests.kt
View File

@@ -3,6 +3,7 @@ package net.buzzert.kordophone.backend
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.cancel
import kotlinx.coroutines.flow.collect
import kotlinx.coroutines.flow.first
import kotlinx.coroutines.launch
import kotlinx.coroutines.runBlocking
import kotlinx.coroutines.withContext
@@ -87,7 +88,7 @@ class BackendTests {
val guid = repository.enqueueOutgoingMessage(outgoingMessage, conversation)
val event = repository.messageDeliveredChannel.receive()
val event = repository.messageDeliveredChannel.first()
assertEquals(event.guid, guid)
assertEquals(event.message.text, outgoingMessage.text)