76 lines
3.1 KiB
Kotlin
76 lines
3.1 KiB
Kotlin
package org.thoughtcrime.securesms.loki.redesign.messaging
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import android.content.Context
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import android.os.Handler
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import android.text.Html
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import android.util.Log
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import com.prof.rssparser.engine.XMLParser
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import kotlinx.coroutines.Job
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import kotlinx.coroutines.Runnable
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import org.thoughtcrime.securesms.jobs.PushDecryptJob
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import org.whispersystems.libsignal.util.guava.Optional
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import org.whispersystems.signalservice.api.messages.SignalServiceContent
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import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage
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import org.whispersystems.signalservice.api.messages.SignalServiceGroup
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import org.whispersystems.signalservice.api.push.SignalServiceAddress
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import org.whispersystems.signalservice.loki.api.rssfeeds.LokiRSSFeed
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import org.whispersystems.signalservice.loki.api.rssfeeds.LokiRSSFeedProxy
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import org.whispersystems.signalservice.loki.utilities.successBackground
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import java.text.SimpleDateFormat
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import java.util.regex.Pattern
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class LokiRSSFeedPoller(private val context: Context, private val feed: LokiRSSFeed) {
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private val handler = Handler()
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private val job = Job()
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private var hasStarted = false
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private val task = object : Runnable {
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override fun run() {
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poll()
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handler.postDelayed(this, interval)
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}
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}
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companion object {
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private val interval: Long = 8 * 60 * 1000
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}
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fun startIfNeeded() {
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if (hasStarted) return
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task.run()
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hasStarted = true
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}
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fun stop() {
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handler.removeCallbacks(task)
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job.cancel()
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hasStarted = false
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}
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private fun poll() {
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LokiRSSFeedProxy.fetch(feed.url).successBackground { xml ->
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val items = XMLParser(xml).call()
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items.reversed().forEach { item ->
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val title = item.title ?: return@forEach
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val description = item.description ?: return@forEach
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val dateAsString = item.pubDate ?: return@forEach
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val formatter = SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss Z") // e.g. Tue, 27 Aug 2019 03:52:05 +0000
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val date = formatter.parse(dateAsString)
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val timestamp = date.time
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var bodyAsHTML = "$title<br>$description"
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val urlRegex = Pattern.compile("<a\\s+(?:[^>]*?\\s+)?href=\"([^\"]*)\".*?>(.*?)<.*?\\/a>")
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val matcher = urlRegex.matcher(bodyAsHTML)
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bodyAsHTML = matcher.replaceAll("$2 ($1)")
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val body = Html.fromHtml(bodyAsHTML).toString().trim()
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val id = feed.id.toByteArray()
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val x1 = SignalServiceGroup(SignalServiceGroup.Type.UPDATE, id, SignalServiceGroup.GroupType.RSS_FEED, null, null, null, null)
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val x2 = SignalServiceDataMessage(timestamp, x1, null, body)
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val x3 = SignalServiceContent(x2, "Loki", SignalServiceAddress.DEFAULT_DEVICE_ID, timestamp, false, false)
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PushDecryptJob(context).handleTextMessage(x3, x2, Optional.absent(), Optional.absent())
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}
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}.fail { exception ->
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Log.d("Loki", "Couldn't update RSS feed with ID: $feed.id due to exception: $exception.")
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}
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}
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} |