Show remaining time of account in Settings

6 files changed, 132 insertions, 0 deletions

diff --git a/android/build.gradle b/android/build.gradle
index 914ee21e88..5e22c4decb 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -61,6 +61,7 @@ dependencies {
     implementation 'com.android.support:recyclerview-v7:28.0.0'
     implementation 'org.jetbrains.kotlin:kotlin-stdlib:1.3.21'
     implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.1.1'
+    implementation 'joda-time:joda-time:2.10.2'
 }
 
 buildscript {
diff --git a/android/src/main/kotlin/net/mullvad/mullvadvpn/RemainingTimeLabel.kt b/android/src/main/kotlin/net/mullvad/mullvadvpn/RemainingTimeLabel.kt
new file mode 100644
index 0000000000..50fcaa8b0f
--- /dev/null
+++ b/android/src/main/kotlin/net/mullvad/mullvadvpn/RemainingTimeLabel.kt
@@ -0,0 +1,87 @@
+package net.mullvad.mullvadvpn
+
+import kotlinx.coroutines.async
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.GlobalScope
+
+import org.joda.time.format.DateTimeFormat
+import org.joda.time.DateTime
+import org.joda.time.Duration
+import org.joda.time.PeriodType
+
+import android.view.View
+import android.widget.TextView
+
+val EXPIRY_FORMAT = DateTimeFormat.forPattern("YYYY-MM-dd HH:mm:ss z")
+
+class RemainingTimeLabel(val parentActivity: MainActivity, val view: View) {
+    private val daemon = parentActivity.asyncDaemon
+    private val settings = parentActivity.asyncSettings
+
+    private val expiredColor = parentActivity.getColor(R.color.red)
+    private val normalColor = parentActivity.getColor(R.color.white60)
+
+    private val resources = parentActivity.resources
+
+    private val label = view.findViewById<TextView>(R.id.remaining_time)
+
+    private var accountExpiry = loadAccountExpiry()
+    private var updateJob = updateLabel()
+
+    fun onDestroy() {
+        updateJob.cancel()
+        accountExpiry.cancel()
+    }
+
+    private fun loadAccountExpiry() = GlobalScope.async(Dispatchers.Default) {
+        val accountToken = settings.await().accountToken
+
+        if (accountToken != null) {
+            val accountData = daemon.await().getAccountData(accountToken)
+            val accountExpiry = accountData?.expiry
+
+            if (accountExpiry != null) {
+                DateTime.parse(accountExpiry, EXPIRY_FORMAT)
+            } else {
+                null
+            }
+        } else {
+            null
+        }
+    }
+
+    private fun updateLabel() = GlobalScope.launch(Dispatchers.Main) {
+        val expiry = accountExpiry.await()
+
+        if (expiry != null) {
+            val remainingTime = Duration(DateTime.now(), expiry)
+
+            if (remainingTime.isShorterThan(Duration.ZERO)) {
+                label.setText(R.string.out_of_time)
+                label.setTextColor(expiredColor)
+            } else {
+                val remainingTimeInfo =
+                    remainingTime.toPeriodTo(expiry, PeriodType.yearMonthDayTime())
+
+                if (remainingTimeInfo.years > 0) {
+                    label.setText(getRemainingText(R.plurals.years_left, remainingTimeInfo.years))
+                } else if (remainingTimeInfo.months > 0) {
+                    label.setText(getRemainingText(R.plurals.months_left, remainingTimeInfo.months))
+                } else if (remainingTimeInfo.days > 0) {
+                    label.setText(getRemainingText(R.plurals.days_left, remainingTimeInfo.days))
+                } else {
+                    label.setText(R.string.less_than_a_day_left)
+                }
+
+                label.setTextColor(normalColor)
+            }
+        } else {
+            label.text = ""
+        }
+    }
+
+    private fun getRemainingText(pluralId: Int, quantity: Int): String {
+        return resources.getQuantityString(pluralId, quantity, quantity)
+    }
+}
diff --git a/android/src/main/kotlin/net/mullvad/mullvadvpn/SettingsFragment.kt b/android/src/main/kotlin/net/mullvad/mullvadvpn/SettingsFragment.kt
index a958978daa..436cc33fd6 100644
--- a/android/src/main/kotlin/net/mullvad/mullvadvpn/SettingsFragment.kt
+++ b/android/src/main/kotlin/net/mullvad/mullvadvpn/SettingsFragment.kt
@@ -10,6 +10,15 @@ import android.widget.Button
 import android.widget.ImageButton
 
 class SettingsFragment : Fragment() {
+    private lateinit var parentActivity: MainActivity
+    private lateinit var remainingTimeLabel: RemainingTimeLabel
+
+    override fun onAttach(context: Context) {
+        super.onAttach(context)
+
+        parentActivity = context as MainActivity
+    }
+
     override fun onCreateView(
         inflater: LayoutInflater,
         container: ViewGroup?,
@@ -25,6 +34,13 @@ class SettingsFragment : Fragment() {
             activity?.finishAndRemoveTask()
         }
 
+        remainingTimeLabel = RemainingTimeLabel(parentActivity, view)
+
         return view
     }
+
+    override fun onDestroyView() {
+        remainingTimeLabel.onDestroy()
+        super.onDestroyView()
+    }
 }
diff --git a/android/src/main/res/layout/settings.xml b/android/src/main/res/layout/settings.xml
index 7868e8e54c..a62a3cfc59 100644
--- a/android/src/main/res/layout/settings.xml
+++ b/android/src/main/res/layout/settings.xml
@@ -45,6 +45,18 @@
                 android:textStyle="bold"
                 android:text="@string/settings_account"
                 />
+        <TextView android:id="@+id/remaining_time"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:paddingHorizontal="8dp"
+                android:gravity="right"
+                android:textColor="@color/white60"
+                android:textSize="13sp"
+                android:textStyle="bold"
+                android:text=""
+                android:textAllCaps="true"
+                />
     </LinearLayout>
     <Button android:id="@+id/quit_button"
             android:layout_marginTop="24dp"
diff --git a/android/src/main/res/values/plurals.xml b/android/src/main/res/values/plurals.xml
new file mode 100644
index 0000000000..5395e2f4fa
--- /dev/null
+++ b/android/src/main/res/values/plurals.xml
@@ -0,0 +1,14 @@
+<resources>
+    <plurals name="years_left">
+        <item quantity="one">%d year left</item>
+        <item quantity="other">%d years left</item>
+    </plurals>
+    <plurals name="months_left">
+        <item quantity="one">%d month left</item>
+        <item quantity="other">%d months left</item>
+    </plurals>
+    <plurals name="days_left">
+        <item quantity="one">%d day left</item>
+        <item quantity="other">%d days left</item>
+    </plurals>
+</resources>
diff --git a/android/src/main/res/values/strings.xml b/android/src/main/res/values/strings.xml
index b0fbcc3499..ae2abb9d34 100644
--- a/android/src/main/res/values/strings.xml
+++ b/android/src/main/res/values/strings.xml
@@ -14,6 +14,8 @@
 
     <string name="settings">Settings</string>
     <string name="settings_account">Account</string>
+    <string name="less_than_a_day_left">less than a day left</string>
+    <string name="out_of_time">Out of time</string>
     <string name="quit">Quit</string>
 
     <string name="unsecured_connection">Unsecured connection</string>