Make compatible with F-Droid (#42)

* Make compatible with F-Droid
* Fix title bar empty

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

@@ -0,0 +1,111 @@
+package be.mygod.vpnhotspot
+
+import android.os.Bundle
+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 androidx.annotation.StringRes
+import androidx.appcompat.app.AlertDialog
+import androidx.core.net.toUri
+import androidx.core.os.bundleOf
+import androidx.fragment.app.DialogFragment
+import com.android.billingclient.api.*
+import timber.log.Timber
+
+/**
+ * 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 KEY_TITLE = "title"
+        private const val KEY_MESSAGE = "message"
+    }
+
+    class MessageDialogFragment : DialogFragment() {
+        override fun onCreateDialog(savedInstanceState: Bundle?) = AlertDialog.Builder(requireContext()).apply {
+            val arguments = arguments!!
+            setTitle(arguments.getInt(KEY_TITLE, 0))
+            setMessage(arguments.getInt(KEY_MESSAGE, 0))
+            setNeutralButton(R.string.donations__button_close, null)
+        }.create()
+    }
+
+    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(context ?: return, android.R.layout.simple_spinner_item,
+                        value?.map { it.price } ?: listOf("…"))
+                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)
+        onBillingServiceDisconnected()
+        view.findViewById<Button>(R.id.donations__google_android_market_donate_button).setOnClickListener {
+            val sku = skus?.getOrNull(googleSpinner.selectedItemPosition)
+            if (sku == null) {
+                openDialog(R.string.donations__google_android_market_not_supported_title,
+                        R.string.donations__google_android_market_not_supported)
+            } else billingClient.launchBillingFlow(requireActivity(), BillingFlowParams.newBuilder()
+                    .setSku(sku.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("https://mygod.be/donate/".toUri())
+                }
+    }
+
+    private fun openDialog(@StringRes title: Int, @StringRes message: Int) = MessageDialogFragment().apply {
+        arguments = bundleOf(Pair(KEY_TITLE, title), Pair(KEY_MESSAGE, message))
+    }.show(fragmentManager, "MessageDialogFragment")
+
+    override fun onBillingServiceDisconnected() {
+        skus = null
+        billingClient = BillingClient.newBuilder(context ?: return).setListener(this).build()
+                .also { it.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 Timber.e("onBillingSetupFinished: $responseCode")
+    }
+
+    override fun onSkuDetailsResponse(responseCode: Int, skuDetailsList: MutableList<SkuDetails>?) {
+        if (responseCode == BillingClient.BillingResponse.OK) skus = skuDetailsList
+        else Timber.e("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 Timber.e("onPurchasesUpdated: $responseCode")
+    }
+
+    override fun onConsumeResponse(responseCode: Int, purchaseToken: String?) {
+        if (responseCode == BillingClient.BillingResponse.OK) {
+            openDialog(R.string.donations__thanks_dialog_title, R.string.donations__thanks_dialog)
+            dismissAllowingStateLoss()
+        } else Timber.e("onConsumeResponse: $responseCode")
+    }
+}

mobile/src/base/java/be/mygod/vpnhotspot/Timber.kt

@@ -0,0 +1,25 @@
+package be.mygod.vpnhotspot
+
+import android.util.Log
+import be.mygod.vpnhotspot.App.Companion.app
+import com.crashlytics.android.Crashlytics
+import io.fabric.sdk.android.Fabric
+import timber.log.Timber
+
+fun initTimber() {
+    Fabric.with(app, Crashlytics())
+    Timber.plant(object : Timber.Tree() {
+        override fun log(priority: Int, tag: String?, message: String, t: Throwable?) {
+            if (t == null) Crashlytics.log(priority, tag, message) else {
+                // Crashlytics.logException doesn't print to logcat
+                if (priority >= Log.WARN || priority == Log.DEBUG) Log.println(priority, tag, message)
+                if (priority >= Log.INFO) Crashlytics.logException(t)
+            }
+        }
+    })
+}
+
+fun debugLog(tag: String?, message: String?) {
+    if (BuildConfig.DEBUG) Timber.d(tag, message)
+    Crashlytics.log("$tag: $message")
+}