1 files changed, 49 insertions, 0 deletions

diff --git a/app/src/main/java/org/pacien/tincapp/activities/PromptActivity.kt b/app/src/main/java/org/pacien/tincapp/activities/PromptActivity.kt
new file mode 100644
index 0000000..6906ead
--- /dev/null
+++ b/app/src/main/java/org/pacien/tincapp/activities/PromptActivity.kt
@@ -0,0 +1,49 @@
+package org.pacien.tincapp.activities
+
+import android.app.Activity
+import android.content.Intent
+import android.net.VpnService
+import android.os.Bundle
+import org.pacien.tincapp.context.App
+import org.pacien.tincapp.service.TincVpnService
+
+/**
+ * @author pacien
+ */
+class PromptActivity : Activity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        when (intent.getSerializableExtra(INTENT_EXTRA_ACTION) as Action) {
+            Action.REQUEST_PERMISSION -> requestVpnPermission()
+        }
+    }
+
+    override fun onActivityResult(request: Int, result: Int, data: Intent?) {
+        if (result == Activity.RESULT_OK) TincVpnService.startVpn(intent.getStringExtra(INTENT_EXTRA_NET_NAME))
+        finish()
+    }
+
+    private fun requestVpnPermission() = VpnService.prepare(this).let {
+        if (it != null)
+            startActivityForResult(it, 0)
+        else
+            onActivityResult(0, Activity.RESULT_OK, Intent())
+    }
+
+    companion object {
+        private val INTENT_EXTRA_ACTION = "action"
+        private val INTENT_EXTRA_NET_NAME = "netName"
+
+        private enum class Action { REQUEST_PERMISSION }
+
+        fun requestVpnPermission(netName: String) {
+            App.getContext().startActivity(Intent(App.getContext(), PromptActivity::class.java)
+                    .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+                    .putExtra(INTENT_EXTRA_ACTION, Action.REQUEST_PERMISSION)
+                    .putExtra(INTENT_EXTRA_NET_NAME, netName))
+        }
+    }
+
+}