Add the best feature ever (E-begging)

This reverts commit ebb6061a6e.

mobile/src/main/java/be/mygod/vpnhotspot/EBegFragment.kt

@@ -0,0 +1,103 @@
+package be.mygod.vpnhotspot
+
+import android.app.AlertDialog
+import android.net.Uri
+import android.os.Bundle
+import android.support.v4.app.DialogFragment
+import android.util.Log
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.view.ViewStub
+import android.widget.ArrayAdapter
+import android.widget.Button
+import android.widget.Spinner
+import com.android.billingclient.api.*
+import com.crashlytics.android.Crashlytics
+
+/**
+ * Based on: https://github.com/PrivacyApps/donations/blob/747d36a18433c7e9329691054122a8ad337a62d2/Donations/src/main/java/org/sufficientlysecure/donations/DonationsFragment.java
+ */
+class EBegFragment : DialogFragment(), PurchasesUpdatedListener, BillingClientStateListener,
+        SkuDetailsResponseListener, ConsumeResponseListener {
+    companion object {
+        private const val TAG = "EBegFragment"
+    }
+
+    private lateinit var billingClient: BillingClient
+    private lateinit var googleSpinner: Spinner
+    private var skus: MutableList<SkuDetails>? = null
+        set(value) {
+            field = value
+            googleSpinner.apply {
+                val adapter = ArrayAdapter(requireContext(), android.R.layout.simple_spinner_item,
+                        value?.map { it.price } ?: emptyList())
+                adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item)
+                setAdapter(adapter)
+            }
+        }
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View =
+            inflater.inflate(R.layout.fragment_ebeg, container, false)
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        googleSpinner = view.findViewById(R.id.donations__google_android_market_spinner)
+        billingClient = BillingClient.newBuilder(view.context).setListener(this).build()
+        onBillingServiceDisconnected()
+        view.findViewById<Button>(R.id.donations__google_android_market_donate_button).setOnClickListener {
+            val skus = skus
+            if (skus == null) {
+                openDialog(android.R.drawable.ic_dialog_alert,
+                        R.string.donations__google_android_market_not_supported_title,
+                        getString(R.string.donations__google_android_market_not_supported))
+            } else billingClient.launchBillingFlow(requireActivity(), BillingFlowParams.newBuilder()
+                    .setSku(skus[googleSpinner.selectedItemPosition].sku).setType(BillingClient.SkuType.INAPP).build())
+        }
+        @Suppress("ConstantConditionIf")
+        if (BuildConfig.DONATIONS) (view.findViewById<ViewStub>(R.id.donations__more_stub).inflate() as Button)
+                .setOnClickListener {
+                    (activity as MainActivity).launchUrl(Uri.parse("https://mygod.be/donate/"))
+                }
+    }
+
+    private fun openDialog(icon: Int, title: Int, message: String) = AlertDialog.Builder(requireContext()).apply {
+        setIcon(icon)
+        setTitle(title)
+        setMessage(message)
+        isCancelable = true
+        setNeutralButton(R.string.donations__button_close) { dialog, _ -> dialog.dismiss() }
+    }.show()
+
+    override fun onBillingServiceDisconnected() {
+        skus = null
+        billingClient.startConnection(this)
+    }
+    override fun onBillingSetupFinished(responseCode: Int) {
+        if (responseCode == BillingClient.BillingResponse.OK) {
+            billingClient.querySkuDetailsAsync(
+                    SkuDetailsParams.newBuilder().apply {
+                        setSkusList(listOf("donate001", "donate002", "donate005", "donate010", "donate020", "donate050",
+                                "donate100", "donate200", "donatemax"))
+                        setType(BillingClient.SkuType.INAPP)
+                    }.build(), this)
+        } else Crashlytics.log(Log.ERROR, TAG, "onBillingSetupFinished: $responseCode")
+    }
+
+    override fun onSkuDetailsResponse(responseCode: Int, skuDetailsList: MutableList<SkuDetails>?) {
+        if (responseCode == BillingClient.BillingResponse.OK) skus = skuDetailsList
+        else Crashlytics.log(Log.ERROR, TAG, "onSkuDetailsResponse: $responseCode")
+    }
+
+    override fun onPurchasesUpdated(responseCode: Int, purchases: MutableList<Purchase>?) {
+        if (responseCode == BillingClient.BillingResponse.OK && purchases != null) {
+            // directly consume in-app purchase, so that people can donate multiple times
+            purchases.forEach { billingClient.consumeAsync(it.purchaseToken, this) }
+        } else Crashlytics.log(Log.ERROR, TAG, "onPurchasesUpdated: $responseCode")
+    }
+    override fun onConsumeResponse(responseCode: Int, purchaseToken: String?) {
+        if (responseCode == BillingClient.BillingResponse.OK) {
+            openDialog(android.R.drawable.ic_dialog_info, R.string.donations__thanks_dialog_title,
+                    getString(R.string.donations__thanks_dialog))
+        } else Crashlytics.log(Log.ERROR, TAG, "onConsumeResponse: $responseCode")
+    }
+}

mobile/src/main/java/be/mygod/vpnhotspot/MainActivity.kt

@@ -1,10 +1,13 @@
 package be.mygod.vpnhotspot
 
 import android.content.ComponentName
+import android.content.Intent
 import android.content.ServiceConnection
 import android.databinding.DataBindingUtil
+import android.net.Uri
 import android.os.Bundle
 import android.os.IBinder
+import android.support.customtabs.CustomTabsIntent
 import android.support.design.internal.BottomNavigationMenuView
 import android.support.design.widget.BottomNavigationView
 import android.support.v4.app.Fragment
@@ -23,6 +26,12 @@ class MainActivity : AppCompatActivity(), BottomNavigationView.OnNavigationItemS
     private lateinit var binding: ActivityMainBinding
     private lateinit var badge: QBadgeView
     private var clients: ClientMonitorService.Binder? = null
+    private val customTabsIntent by lazy {
+        CustomTabsIntent.Builder()
+                .setToolbarColor(ContextCompat.getColor(this, R.color.colorPrimary))
+                .build()
+    }
+    fun launchUrl(url: Uri) = customTabsIntent.launchUrl(this, url)
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -76,4 +85,9 @@ class MainActivity : AppCompatActivity(), BottomNavigationView.OnNavigationItemS
 
     private fun displayFragment(fragment: Fragment) =
             supportFragmentManager.beginTransaction().replace(R.id.fragmentHolder, fragment).commitAllowingStateLoss()
+
+    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
+        super.onActivityResult(requestCode, resultCode, data)
+        supportFragmentManager.findFragmentByTag("donationsFragment")?.onActivityResult(requestCode, resultCode, data)
+    }
 }

mobile/src/main/java/be/mygod/vpnhotspot/SettingsPreferenceFragment.kt

@@ -5,8 +5,6 @@ import android.content.Intent
 import android.net.Uri
 import android.os.Build
 import android.os.Bundle
-import android.support.customtabs.CustomTabsIntent
-import android.support.v4.content.ContextCompat
 import android.support.v4.content.FileProvider
 import android.support.v7.preference.Preference
 import android.widget.Toast
@@ -26,12 +24,6 @@ import java.net.NetworkInterface
 import java.net.SocketException
 
 class SettingsPreferenceFragment : PreferenceFragmentCompat() {
-    private val customTabsIntent by lazy {
-        CustomTabsIntent.Builder()
-                .setToolbarColor(ContextCompat.getColor(requireContext(), R.color.colorPrimary))
-                .build()
-    }
-
     override fun onCreatePreferencesFix(savedInstanceState: Bundle?, rootKey: String?) {
         preferenceManager.preferenceDataStore = SharedPreferenceDataStore(app.pref)
         addPreferencesFromResource(R.xml.pref_settings)
@@ -98,7 +90,11 @@ class SettingsPreferenceFragment : PreferenceFragmentCompat() {
             true
         }
         findPreference("misc.source").setOnPreferenceClickListener {
-            customTabsIntent.launchUrl(requireActivity(), Uri.parse("https://github.com/Mygod/VPNHotspot"))
+            (activity as MainActivity).launchUrl(Uri.parse("https://github.com/Mygod/VPNHotspot"))
+            true
+        }
+        findPreference("misc.donate").setOnPreferenceClickListener {
+            EBegFragment().show(fragmentManager, "ebeg_fragment")
             true
         }
     }