Non-free app download attempt disabled

app/src/main/java/com/github/yeriomin/yalpstore/DetailsActivity.java

@@ -180,33 +180,38 @@ public class DetailsActivity extends Activity {
         setText(R.id.permissions, TextUtils.join("\n", localizedPermissions));
 
         Button downloadButton = (Button) findViewById(R.id.download);
-        downloadButton.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                task = new GoogleApiAsyncTask() {
-                    @Override
-                    protected Throwable doInBackground(Void... params) {
-                        PlayStoreApiWrapper wrapper = new PlayStoreApiWrapper(DetailsActivity.this);
-                        try {
-                            wrapper.download(app);
-                        } catch (Throwable e) {
-                            return e;
+        if (app.isFree()) {
+            downloadButton.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View v) {
+                    task = new GoogleApiAsyncTask() {
+                        @Override
+                        protected Throwable doInBackground(Void... params) {
+                            PlayStoreApiWrapper wrapper = new PlayStoreApiWrapper(DetailsActivity.this);
+                            try {
+                                wrapper.download(app);
+                            } catch (Throwable e) {
+                                return e;
+                            }
+                            return null;
                         }
-                        return null;
+                    };
+                    task.setContext(v.getContext());
+                    task.prepareDialog(
+                        getString(R.string.dialog_message_purchasing_app),
+                        getString(R.string.dialog_title_purchasing_app)
+                    );
+                    if (checkPermission()) {
+                        task.execute();
+                    } else {
+                        requestPermission();
                     }
-                };
-                task.setContext(v.getContext());
-                task.prepareDialog(
-                    getString(R.string.dialog_message_purchasing_app),
-                    getString(R.string.dialog_title_purchasing_app)
-                );
-                if (checkPermission()) {
-                    task.execute();
-                } else {
-                    requestPermission();
                 }
-            }
-        });
+            });
+        } else {
+            downloadButton.setText(getString(R.string.details_download_nonfree));
+            downloadButton.setEnabled(false);
+        }
     }
 
     private void setText(int viewId, String text) {

app/src/main/java/com/github/yeriomin/yalpstore/PlayStoreApiWrapper.java

@@ -52,6 +52,7 @@ public class PlayStoreApiWrapper {
         app.setRating(details.getAggregateRating().getStarRating());
         if (details.getOfferCount() > 0) {
             app.setOfferType(details.getOffer(0).getOfferType());
+            app.setFree(details.getOffer(0).getMicros() == 0);
         }
         AppDetails appDetails = details.getDetails().getAppDetails();
         app.getPackageInfo().packageName = appDetails.getPackageName();

app/src/main/java/com/github/yeriomin/yalpstore/model/App.java

@@ -25,6 +25,7 @@ public class App {
     private String description;
     private List<String> permissions;
     private boolean isInstalled;
+    private boolean isFree;
 
     public App() {
         this.packageInfo = new PackageInfo();
@@ -175,4 +176,12 @@ public class App {
     public void setInstalled(boolean installed) {
         isInstalled = installed;
     }
+
+    public boolean isFree() {
+        return isFree;
+    }
+
+    public void setFree(boolean free) {
+        isFree = free;
+    }
 }

app/src/main/res/values-ru/strings.xml

@@ -32,6 +32,7 @@
     <string name="details_versionName" formatted="false">Версия %s</string>
     <string name="details_versionName_updatable" formatted="false">Версия %s → %s</string>
     <string name="details_download">Скачать</string>
+    <string name="details_download_nonfree">Платное приложение - скачать не получится</string>
     <string name="suffix_million">млн</string>
     <string name="suffix_billion">млрд</string>
     <string name="credentials_hint_email">e-mail</string>

app/src/main/res/values/strings.xml

@@ -32,6 +32,7 @@
     <string name="details_versionName" formatted="false">Version %s</string>
     <string name="details_versionName_updatable" formatted="false">Version %s → %s</string>
     <string name="details_download">Download</string>
+    <string name="details_download_nonfree">App is not free - download disabled</string>
     <string name="suffix_million">mil</string>
     <string name="suffix_billion">bil</string>
     <string name="credentials_hint_email">e-mail here</string>