Stupid live data
This commit is contained in:
parent
391b04366b
commit
43b3aec311
10 changed files with 250 additions and 215 deletions
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@ -14,10 +14,7 @@ import androidx.core.app.NotificationCompat
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import androidx.core.app.NotificationManagerCompat
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import androidx.recyclerview.widget.RecyclerView
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import io.heckel.ntfy.add.AddTopicActivity
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import io.heckel.ntfy.data.Status
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import io.heckel.ntfy.data.Topic
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import io.heckel.ntfy.data.topicShortUrl
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import io.heckel.ntfy.data.topicUrl
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import io.heckel.ntfy.data.*
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import io.heckel.ntfy.detail.DetailActivity
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import kotlin.random.Random
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@ -27,8 +24,8 @@ const val TOPIC_BASE_URL = "base_url"
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class MainActivity : AppCompatActivity() {
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private val newTopicActivityRequestCode = 1
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private val topicsViewModel by viewModels<TopicsViewModel> {
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TopicsViewModelFactory()
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private val topicsViewModel by viewModels<SubscriptionViewModel> {
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SubscriptionsViewModelFactory()
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}
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override fun onCreate(savedInstanceState: Bundle?) {
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@ -48,17 +45,22 @@ class MainActivity : AppCompatActivity() {
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topicsViewModel.list().observe(this) {
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it?.let {
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adapter.submitList(it as MutableList<Topic>)
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println("new data arrived: $it")
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adapter.submitList(it as MutableList<Subscription>)
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}
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}
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// Set up notification channel
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createNotificationChannel()
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topicsViewModel.setNotificationListener { n -> displayNotification(n) }
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topicsViewModel.setListener(object : NotificationListener {
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override fun onNotification(subscriptionId: Long, notification: Notification) {
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displayNotification(notification)
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}
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})
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}
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/* Opens TopicDetailActivity when RecyclerView item is clicked. */
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private fun topicOnClick(topic: Topic) {
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private fun topicOnClick(topic: Subscription) {
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val intent = Intent(this, DetailActivity()::class.java)
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intent.putExtra(TOPIC_ID, topic.id)
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startActivity(intent)
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@ -77,7 +79,7 @@ class MainActivity : AppCompatActivity() {
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intentData?.let { data ->
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val name = data.getStringExtra(TOPIC_NAME) ?: return
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val baseUrl = data.getStringExtra(TOPIC_BASE_URL) ?: return
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val topic = Topic(Random.nextLong(), name, baseUrl, Status.CONNECTING, 0)
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val topic = Subscription(Random.nextLong(), name, baseUrl, Status.CONNECTING, 0)
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topicsViewModel.add(topic)
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}
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@ -88,7 +90,7 @@ class MainActivity : AppCompatActivity() {
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val channelId = getString(R.string.notification_channel_id)
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val notification = NotificationCompat.Builder(this, channelId)
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.setSmallIcon(R.drawable.ntfy)
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.setContentTitle(topicShortUrl(n.topic))
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.setContentTitle(topicShortUrl(n.subscription))
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.setContentText(n.message)
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.setPriority(NotificationCompat.PRIORITY_DEFAULT)
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.build()
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67
app/src/main/java/io/heckel/ntfy/SubscriptionViewModel.kt
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67
app/src/main/java/io/heckel/ntfy/SubscriptionViewModel.kt
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@ -0,0 +1,67 @@
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package io.heckel.ntfy
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import androidx.lifecycle.LiveData
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import androidx.lifecycle.ViewModel
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import androidx.lifecycle.ViewModelProvider
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import androidx.lifecycle.viewModelScope
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import io.heckel.ntfy.data.*
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import kotlin.collections.List
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class SubscriptionViewModel(private val repository: Repository, private val connectionManager: ConnectionManager) : ViewModel() {
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fun add(topic: Subscription) {
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repository.add(topic)
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connectionManager.start(topic, viewModelScope)
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}
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fun get(id: Long) : Subscription? {
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return repository.get(id)
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}
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fun list(): LiveData<List<Subscription>> {
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return repository.list()
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}
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fun remove(topic: Subscription) {
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repository.remove(topic)
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connectionManager.stop(topic)
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}
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fun setListener(listener: NotificationListener) {
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connectionManager.setListener(object : ConnectionListener {
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override fun onStatusChanged(subcriptionId: Long, status: Status) {
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println("onStatusChanged($subcriptionId, $status)")
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val topic = repository.get(subcriptionId)
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if (topic != null) {
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println("-> old topic: $topic")
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repository.update(topic.copy(status = status))
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}
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}
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override fun onNotification(subscriptionId: Long, notification: Notification) {
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println("onNotification($subscriptionId, $notification)")
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val topic = repository.get(subscriptionId)
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if (topic != null) {
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println("-> old topic: $topic")
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repository.update(topic.copy(messages = topic.messages + 1))
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}
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listener.onNotification(subscriptionId, notification) // Forward downstream
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}
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})
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}
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}
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class SubscriptionsViewModelFactory : ViewModelProvider.Factory {
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@Suppress("UNCHECKED_CAST")
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override fun <T : ViewModel?> create(modelClass: Class<T>) =
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with(modelClass){
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when {
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isAssignableFrom(SubscriptionViewModel::class.java) -> {
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val repository = Repository.getInstance()
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val connectionManager = ConnectionManager.getInstance()
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SubscriptionViewModel(repository, connectionManager) as T
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}
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else -> throw IllegalArgumentException("Unknown viewModel class $modelClass")
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}
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}
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}
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@ -9,16 +9,16 @@ import androidx.recyclerview.widget.DiffUtil
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import androidx.recyclerview.widget.ListAdapter
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import androidx.recyclerview.widget.RecyclerView
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import io.heckel.ntfy.data.Status
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import io.heckel.ntfy.data.Topic
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import io.heckel.ntfy.data.Subscription
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import io.heckel.ntfy.data.topicUrl
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class TopicsAdapter(private val onClick: (Topic) -> Unit) :
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ListAdapter<Topic, TopicsAdapter.TopicViewHolder>(TopicDiffCallback) {
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class TopicsAdapter(private val onClick: (Subscription) -> Unit) :
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ListAdapter<Subscription, TopicsAdapter.TopicViewHolder>(TopicDiffCallback) {
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/* ViewHolder for Topic, takes in the inflated view and the onClick behavior. */
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class TopicViewHolder(itemView: View, val onClick: (Topic) -> Unit) :
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class TopicViewHolder(itemView: View, val onClick: (Subscription) -> Unit) :
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RecyclerView.ViewHolder(itemView) {
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private var topic: Topic? = null
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private var topic: Subscription? = null
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private val context: Context = itemView.context
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private val nameView: TextView = itemView.findViewById(R.id.topic_text)
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private val statusView: TextView = itemView.findViewById(R.id.topic_status)
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@ -31,18 +31,19 @@ class TopicsAdapter(private val onClick: (Topic) -> Unit) :
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}
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}
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fun bind(topic: Topic) {
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this.topic = topic
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val statusText = when (topic.status) {
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fun bind(subscription: Subscription) {
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println("bind sub: $subscription")
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this.topic = subscription
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val statusText = when (subscription.status) {
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Status.CONNECTING -> context.getString(R.string.status_connecting)
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else -> context.getString(R.string.status_subscribed)
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else -> context.getString(R.string.status_connected)
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}
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val statusMessage = if (topic.messages == 1) {
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context.getString(R.string.status_text_one, statusText, topic.messages)
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val statusMessage = if (subscription.messages == 1) {
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context.getString(R.string.status_text_one, statusText, subscription.messages)
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} else {
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context.getString(R.string.status_text_not_one, statusText, topic.messages)
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context.getString(R.string.status_text_not_one, statusText, subscription.messages)
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}
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nameView.text = topicUrl(topic)
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nameView.text = topicUrl(subscription)
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statusView.text = statusMessage
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}
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}
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@ -61,12 +62,14 @@ class TopicsAdapter(private val onClick: (Topic) -> Unit) :
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}
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}
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object TopicDiffCallback : DiffUtil.ItemCallback<Topic>() {
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override fun areItemsTheSame(oldItem: Topic, newItem: Topic): Boolean {
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object TopicDiffCallback : DiffUtil.ItemCallback<Subscription>() {
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override fun areItemsTheSame(oldItem: Subscription, newItem: Subscription): Boolean {
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println("areItemsTheSame: $oldItem.id ==? $newItem.id")
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return oldItem.id == newItem.id
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}
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override fun areContentsTheSame(oldItem: Topic, newItem: Topic): Boolean {
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override fun areContentsTheSame(oldItem: Subscription, newItem: Subscription): Boolean {
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println("areContentsTheSame: $oldItem ==? $newItem")
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return oldItem == newItem
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}
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}
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@ -1,45 +0,0 @@
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package io.heckel.ntfy
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import androidx.lifecycle.LiveData
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import androidx.lifecycle.ViewModel
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import androidx.lifecycle.ViewModelProvider
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import androidx.lifecycle.viewModelScope
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import io.heckel.ntfy.data.Repository
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import io.heckel.ntfy.data.Topic
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import kotlin.collections.List
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data class Notification(val topic: Topic, val message: String)
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typealias NotificationListener = (notification: Notification) -> Unit
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class TopicsViewModel(private val repository: Repository) : ViewModel() {
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fun add(topic: Topic) {
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repository.add(topic, viewModelScope)
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}
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fun get(id: Long) : Topic? {
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return repository.get(id)
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}
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fun list(): LiveData<List<Topic>> {
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return repository.list()
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}
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fun remove(topic: Topic) {
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repository.remove(topic)
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}
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fun setNotificationListener(listener: NotificationListener) {
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repository.setNotificationListener(listener)
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}
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}
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class TopicsViewModelFactory() : ViewModelProvider.Factory {
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@Suppress("UNCHECKED_CAST")
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override fun <T : ViewModel?> create(modelClass: Class<T>) =
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with(modelClass){
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when {
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isAssignableFrom(TopicsViewModel::class.java) -> TopicsViewModel(Repository.getInstance()) as T
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else -> throw IllegalArgumentException("Unknown viewModel class $modelClass")
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}
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}
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}
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84
app/src/main/java/io/heckel/ntfy/data/ConnectionManager.kt
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84
app/src/main/java/io/heckel/ntfy/data/ConnectionManager.kt
Normal file
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package io.heckel.ntfy.data
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import com.google.gson.GsonBuilder
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import com.google.gson.JsonObject
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import com.google.gson.JsonSyntaxException
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import kotlinx.coroutines.*
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import java.io.IOException
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import java.net.HttpURLConnection
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import java.net.URL
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const val READ_TIMEOUT = 60_000 // Keep alive every 30s assumed
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class ConnectionManager {
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private val jobs = mutableMapOf<Long, Job>()
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private val gson = GsonBuilder().create()
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private var listener: ConnectionListener? = null;
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fun start(subscription: Subscription, scope: CoroutineScope) {
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jobs[subscription.id] = launchConnection(subscription, scope)
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}
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fun stop(subscription: Subscription) {
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jobs.remove(subscription.id)?.cancel() // Cancel coroutine and remove
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}
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fun setListener(listener: ConnectionListener) {
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this.listener = listener
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}
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private fun launchConnection(subscription: Subscription, scope: CoroutineScope): Job {
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return scope.launch(Dispatchers.IO) {
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while (isActive) {
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openConnection(this, subscription)
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delay(5000) // TODO exponential back-off
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}
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}
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}
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private fun openConnection(scope: CoroutineScope, subscription: Subscription) {
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val url = "${subscription.baseUrl}/${subscription.topic}/json"
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println("Connecting to $url ...")
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val conn = (URL(url).openConnection() as HttpURLConnection).also {
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it.doInput = true
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it.readTimeout = READ_TIMEOUT
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}
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try {
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listener?.onStatusChanged(subscription.id, Status.CONNECTED)
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val input = conn.inputStream.bufferedReader()
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while (scope.isActive) {
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val line = input.readLine() ?: break // Break if EOF is reached, i.e. readLine is null
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if (!scope.isActive) {
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break // Break if scope is not active anymore; readLine blocks for a while, so we want to be sure
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}
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try {
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val json = gson.fromJson(line, JsonObject::class.java) ?: break // Break on unexpected line
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if (!json.isJsonNull && !json.has("event") && json.has("message")) {
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val message = json.get("message").asString
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listener?.onNotification(subscription.id, Notification(subscription, message))
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}
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} catch (e: JsonSyntaxException) {
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break // Break on unexpected line
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}
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}
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} catch (e: IOException) {
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println("Connection error: " + e.message)
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} finally {
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conn.disconnect()
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}
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listener?.onStatusChanged(subscription.id, Status.CONNECTING)
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println("Connection terminated: $url")
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}
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companion object {
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private var instance: ConnectionManager? = null
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fun getInstance(): ConnectionManager {
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return synchronized(ConnectionManager::class) {
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val newInstance = instance ?: ConnectionManager()
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instance = newInstance
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newInstance
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}
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}
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}
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}
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29
app/src/main/java/io/heckel/ntfy/data/Models.kt
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29
app/src/main/java/io/heckel/ntfy/data/Models.kt
Normal file
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package io.heckel.ntfy.data
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enum class Status {
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CONNECTED, CONNECTING
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}
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data class Subscription(
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val id: Long, // Internal ID, only used in Repository and activities
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val topic: String,
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val baseUrl: String,
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val status: Status,
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val messages: Int
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)
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data class Notification(
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val subscription: Subscription,
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val message: String
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)
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interface NotificationListener {
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fun onNotification(subscriptionId: Long, notification: Notification)
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}
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interface ConnectionListener : NotificationListener {
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fun onStatusChanged(subcriptionId: Long, status: Status)
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}
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fun topicUrl(s: Subscription) = "${s.baseUrl}/${s.topic}"
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fun topicShortUrl(s: Subscription) = topicUrl(s).replace("http://", "").replace("https://", "")
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@ -2,133 +2,43 @@ package io.heckel.ntfy.data
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import androidx.lifecycle.LiveData
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import androidx.lifecycle.MutableLiveData
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import com.google.gson.GsonBuilder
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import com.google.gson.JsonObject
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import com.google.gson.JsonSyntaxException
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import io.heckel.ntfy.Notification
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import io.heckel.ntfy.NotificationListener
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import kotlinx.coroutines.*
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import java.io.IOException
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import java.net.HttpURLConnection
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import java.net.URL
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const val READ_TIMEOUT = 60_000 // Keep alive every 30s assumed
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class Repository {
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private val topics: MutableLiveData<List<Topic>> = MutableLiveData(mutableListOf())
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private val jobs = mutableMapOf<Long, Job>()
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private val gson = GsonBuilder().create()
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private var notificationListener: NotificationListener? = null;
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private val subscriptions = mutableListOf<Subscription>()
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private val subscriptionsLiveData: MutableLiveData<List<Subscription>> = MutableLiveData(subscriptions)
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fun add(topic: Topic, scope: CoroutineScope) {
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val currentList = topics.value
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if (currentList == null) {
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topics.postValue(listOf(topic))
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} else {
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val updatedList = currentList.toMutableList()
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updatedList.add(0, topic)
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topics.postValue(updatedList)
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fun add(subscription: Subscription) {
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synchronized(subscriptions) {
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subscriptions.add(subscription)
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subscriptionsLiveData.postValue(ArrayList(subscriptions)) // Copy!
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}
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jobs[topic.id] = subscribeTopic(topic, scope)
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}
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fun update(topic: Topic) {
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val currentList = topics.value
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if (currentList == null) {
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topics.postValue(listOf(topic))
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} else {
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val index = currentList.indexOfFirst { it.id == topic.id } // Find index by Topic ID
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if (index == -1) {
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return // TODO race?
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} else {
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val updatedList = currentList.toMutableList()
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updatedList[index] = topic
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println("PHIL updated list:")
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println(updatedList)
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topics.postValue(updatedList)
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fun update(subscription: Subscription) {
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synchronized(subscriptions) {
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val index = subscriptions.indexOfFirst { it.id == subscription.id } // Find index by Topic ID
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if (index == -1) return
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subscriptions[index] = subscription
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subscriptionsLiveData.postValue(ArrayList(subscriptions)) // Copy!
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}
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}
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fun remove(subscription: Subscription) {
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synchronized(subscriptions) {
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if (subscriptions.remove(subscription)) {
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subscriptionsLiveData.postValue(ArrayList(subscriptions)) // Copy!
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}
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}
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}
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fun remove(topic: Topic) {
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val currentList = topics.value
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if (currentList != null) {
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val updatedList = currentList.toMutableList()
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updatedList.remove(topic)
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topics.postValue(updatedList)
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}
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jobs.remove(topic.id)?.cancel() // Cancel coroutine and remove
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}
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fun get(id: Long): Topic? {
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topics.value?.let { topics ->
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return topics.firstOrNull{ it.id == id}
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}
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return null
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}
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fun list(): LiveData<List<Topic>> {
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return topics
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}
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fun setNotificationListener(listener: NotificationListener) {
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notificationListener = listener
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}
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private fun subscribeTopic(topic: Topic, scope: CoroutineScope): Job {
|
||||
return scope.launch(Dispatchers.IO) {
|
||||
while (isActive) {
|
||||
openConnection(this, topic)
|
||||
delay(5000) // TODO exponential back-off
|
||||
}
|
||||
fun get(id: Long): Subscription? {
|
||||
synchronized(subscriptions) {
|
||||
return subscriptions.firstOrNull { it.id == id } // Find index by Topic ID
|
||||
}
|
||||
}
|
||||
|
||||
private fun openConnection(scope: CoroutineScope, topic: Topic) {
|
||||
val url = "${topic.baseUrl}/${topic.name}/json"
|
||||
println("Connecting to $url ...")
|
||||
val conn = (URL(url).openConnection() as HttpURLConnection).also {
|
||||
it.doInput = true
|
||||
it.readTimeout = READ_TIMEOUT
|
||||
}
|
||||
// TODO ugly
|
||||
val currentTopic = get(topic.id)
|
||||
if (currentTopic != null) {
|
||||
update(currentTopic.copy(status = Status.SUBSCRIBED))
|
||||
}
|
||||
try {
|
||||
val input = conn.inputStream.bufferedReader()
|
||||
while (scope.isActive) {
|
||||
val line = input.readLine() ?: break // Break if EOF is reached, i.e. readLine is null
|
||||
if (!scope.isActive) {
|
||||
break // Break if scope is not active anymore; readLine blocks for a while, so we want to be sure
|
||||
}
|
||||
try {
|
||||
val json = gson.fromJson(line, JsonObject::class.java) ?: break // Break on unexpected line
|
||||
if (!json.isJsonNull && json.has("message")) {
|
||||
val message = json.get("message").asString
|
||||
notificationListener?.let { it(Notification(topic, message)) }
|
||||
|
||||
// TODO ugly
|
||||
val currentTopic = get(topic.id)
|
||||
if (currentTopic != null) {
|
||||
update(currentTopic.copy(messages = currentTopic.messages+1))
|
||||
}
|
||||
}
|
||||
} catch (e: JsonSyntaxException) {
|
||||
break // Break on unexpected line
|
||||
}
|
||||
}
|
||||
} catch (e: IOException) {
|
||||
println("Connection error: " + e.message)
|
||||
} finally {
|
||||
conn.disconnect()
|
||||
}
|
||||
val currentTopic2 = get(topic.id)
|
||||
if (currentTopic2 != null) {
|
||||
update(currentTopic2.copy(status = Status.CONNECTING))
|
||||
}
|
||||
println("Connection terminated: $url")
|
||||
fun list(): LiveData<List<Subscription>> {
|
||||
return subscriptionsLiveData
|
||||
}
|
||||
|
||||
companion object {
|
||||
|
|
|
@ -1,16 +0,0 @@
|
|||
package io.heckel.ntfy.data
|
||||
|
||||
enum class Status {
|
||||
SUBSCRIBED, CONNECTING
|
||||
}
|
||||
|
||||
data class Topic(
|
||||
val id: Long, // Internal ID, only used in Repository and activities
|
||||
val name: String,
|
||||
val baseUrl: String,
|
||||
val status: Status,
|
||||
val messages: Int
|
||||
)
|
||||
|
||||
fun topicUrl(t: Topic) = "${t.baseUrl}/${t.name}"
|
||||
fun topicShortUrl(t: Topic) = topicUrl(t).replace("http://", "").replace("https://", "")
|
|
@ -23,19 +23,20 @@ import androidx.activity.viewModels
|
|||
import androidx.appcompat.app.AppCompatActivity
|
||||
import io.heckel.ntfy.R
|
||||
import io.heckel.ntfy.TOPIC_ID
|
||||
import io.heckel.ntfy.TopicsViewModel
|
||||
import io.heckel.ntfy.TopicsViewModelFactory
|
||||
import io.heckel.ntfy.SubscriptionViewModel
|
||||
import io.heckel.ntfy.SubscriptionsViewModelFactory
|
||||
import io.heckel.ntfy.data.topicShortUrl
|
||||
|
||||
class DetailActivity : AppCompatActivity() {
|
||||
private val topicsViewModel by viewModels<TopicsViewModel> {
|
||||
TopicsViewModelFactory()
|
||||
private val subscriptionsViewModel by viewModels<SubscriptionViewModel> {
|
||||
SubscriptionsViewModelFactory()
|
||||
}
|
||||
|
||||
override fun onCreate(savedInstanceState: Bundle?) {
|
||||
super.onCreate(savedInstanceState)
|
||||
setContentView(R.layout.topic_detail_activity)
|
||||
|
||||
var topicId: Long? = null
|
||||
var subscriptionId: Long? = null
|
||||
|
||||
/* Connect variables to UI elements. */
|
||||
val topicText: TextView = findViewById(R.id.topic_detail_url)
|
||||
|
@ -43,20 +44,20 @@ class DetailActivity : AppCompatActivity() {
|
|||
|
||||
val bundle: Bundle? = intent.extras
|
||||
if (bundle != null) {
|
||||
topicId = bundle.getLong(TOPIC_ID)
|
||||
subscriptionId = bundle.getLong(TOPIC_ID)
|
||||
}
|
||||
|
||||
// TODO This should probably fail hard if topicId is null
|
||||
|
||||
/* If currentTopicId is not null, get corresponding topic and set name, image and
|
||||
description */
|
||||
topicId?.let {
|
||||
val topic = topicsViewModel.get(it)
|
||||
topicText.text = "${topic?.baseUrl}/${topic?.name}"
|
||||
subscriptionId?.let {
|
||||
val subscription = subscriptionsViewModel.get(it)
|
||||
topicText.text = subscription?.let { s -> topicShortUrl(s) }
|
||||
|
||||
removeButton.setOnClickListener {
|
||||
if (topic != null) {
|
||||
topicsViewModel.remove(topic)
|
||||
if (subscription != null) {
|
||||
subscriptionsViewModel.remove(subscription)
|
||||
}
|
||||
finish()
|
||||
}
|
||||
|
|
|
@ -2,12 +2,12 @@
|
|||
<string name="app_name">Ntfy</string>
|
||||
<string name="add_topic">Add Topic</string>
|
||||
|
||||
<string name="topic_string">Topics</string>
|
||||
|
||||
<string name="topic_name_edit_text">Topic Name</string>
|
||||
<string name="topic_base_url_edit_text">Service URL</string>
|
||||
<string name="topic_base_url_default_value">https://ntfy.sh</string>
|
||||
<string name="subscribe_button_text">Subscribe</string>
|
||||
<string name="status_subscribed">Subscribed</string>
|
||||
<string name="status_connected">Connected</string>
|
||||
<string name="status_connecting">Connecting</string>
|
||||
<string name="status_text_one">%1$s, %2$d notification</string>
|
||||
<string name="status_text_not_one">%1$s, %2$d notifications</string>
|
||||
|
|
Loading…
Reference in a new issue