Added DeepL usage stats

app/src/main/java/eu/faircode/email/DeepL.java

@@ -78,8 +78,46 @@ public class DeepL {
 
             JSONObject jroot = new JSONObject(response);
             JSONArray jtranslations = jroot.getJSONArray("translations");
+            if (jtranslations.length() == 0)
+                throw new FileNotFoundException();
             JSONObject jtranslation = (JSONObject) jtranslations.get(0);
-            return jtranslation.getString("text");
+            String detected = jtranslation.getString("detected_source_language");
+            String translated = jtranslation.getString("text");
+            return translated;
+        } finally {
+            connection.disconnect();
+        }
+    }
+
+    public static Integer[] getUsage(Context context) throws IOException, JSONException {
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+        String deepl = prefs.getString("deepl", null);
+
+        URL url = new URL(DEEPL_BASE_URI + "usage?auth_key=" + deepl);
+        HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();
+        connection.setReadTimeout(DEEPL_TIMEOUT * 1000);
+        connection.setConnectTimeout(DEEPL_TIMEOUT * 1000);
+        connection.setRequestProperty("User-Agent", WebViewEx.getUserAgent(context));
+        connection.connect();
+
+        try {
+            int status = connection.getResponseCode();
+            if (status != HttpsURLConnection.HTTP_OK) {
+                String error = "Error " + status + ": " + connection.getResponseMessage();
+                try {
+                    error += "\n" + Helper.readStream(connection.getErrorStream());
+                } catch (Throwable ex) {
+                    Log.w(ex);
+                }
+                throw new FileNotFoundException(error);
+            }
+
+            String response = Helper.readStream(connection.getInputStream());
+
+            JSONObject jroot = new JSONObject(response);
+            int count = jroot.getInt("character_count");
+            int limit = jroot.getInt("character_limit");
+            return new Integer[]{count, limit};
         } finally {
             connection.disconnect();
         }

app/src/main/java/eu/faircode/email/FragmentCompose.java

@@ -2068,7 +2068,7 @@ public class FragmentCompose extends FragmentBase {
 
             @Override
             protected void onException(Bundle args, Throwable ex) {
-                Log.unexpectedError(getParentFragmentManager(), ex);
+                Log.unexpectedError(getParentFragmentManager(), ex, false);
             }
         }.execute(this, args, "compose:translate");
     }
@@ -6732,15 +6732,14 @@ public class FragmentCompose extends FragmentBase {
         @NonNull
         @Override
         public Dialog onCreateDialog(@Nullable Bundle savedInstanceState) {
-
             final Context context = getContext();
             final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+            String key = prefs.getString("deepl", null);
 
             View view = LayoutInflater.from(context).inflate(R.layout.dialog_deepl, null);
-            final EditText etKey = view.findViewById(R.id.etKey);
             final ImageButton ibInfo = view.findViewById(R.id.ibInfo);
-
-            etKey.setText(prefs.getString("deepl", null));
+            final EditText etKey = view.findViewById(R.id.etKey);
+            final TextView tvUsage = view.findViewById(R.id.tvUsage);
 
             ibInfo.setOnClickListener(new View.OnClickListener() {
                 @Override
@@ -6749,6 +6748,37 @@ public class FragmentCompose extends FragmentBase {
                 }
             });
 
+            etKey.setText(key);
+
+            tvUsage.setVisibility(View.GONE);
+
+            if (!TextUtils.isEmpty(key)) {
+                Bundle args = new Bundle();
+                args.putString("key", key);
+
+                new SimpleTask<Integer[]>() {
+                    @Override
+                    protected Integer[] onExecute(Context context, Bundle args) throws Throwable {
+                        String key = args.getString("key");
+                        return DeepL.getUsage(context);
+                    }
+
+                    @Override
+                    protected void onExecuted(Bundle args, Integer[] usage) {
+                        tvUsage.setText(
+                                Helper.humanReadableByteCount(usage[0]) + "/" +
+                                        Helper.humanReadableByteCount(usage[1]));
+                        tvUsage.setVisibility(View.VISIBLE);
+                    }
+
+                    @Override
+                    protected void onException(Bundle args, Throwable ex) {
+                        if (BuildConfig.DEBUG)
+                            Log.unexpectedError(getParentFragmentManager(), ex);
+                    }
+                }.execute(this, new Bundle(), "deepl:usage");
+            }
+
             return new AlertDialog.Builder(context)
                     .setView(view)
                     .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {

app/src/main/res/layout/dialog_deepl.xml

@@ -44,4 +44,14 @@
 
         <requestFocus />
     </eu.faircode.email.EditTextPlain>
+
+    <eu.faircode.email.FixedTextView
+        android:id="@+id/tvUsage"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="12dp"
+        android:text="Usage"
+        android:textAppearance="@style/TextAppearance.AppCompat.Small"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/etKey" />
 </androidx.constraintlayout.widget.ConstraintLayout>