Add share API

app/src/main/AndroidManifest.xml

@@ -34,6 +34,14 @@
                 android:name="android.app.lib_name"
                 android:value="" />
         </activity>
+
+        <receiver
+            android:name=".service.DownloadBroadcastReceiver"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.DOWNLOAD_COMPLETE"/>
+            </intent-filter>
+        </receiver>
     </application>
 
 </manifest>

app/src/main/java/gallery/memories/NativeX.java

@@ -2,10 +2,7 @@ package gallery.memories;
 
 import static android.view.WindowInsetsController.APPEARANCE_LIGHT_STATUS_BARS;
 
-import android.app.DownloadManager;
-import android.content.Context;
 import android.graphics.Color;
-import android.net.Uri;
 import android.os.Build;
 import android.util.Log;
 import android.view.View;
@@ -19,26 +16,30 @@ import androidx.appcompat.app.AppCompatActivity;
 import androidx.collection.ArrayMap;
 
 import java.io.ByteArrayInputStream;
+import java.net.URLDecoder;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 
+import gallery.memories.service.DownloadService;
 import gallery.memories.service.ImageService;
 import gallery.memories.service.TimelineQuery;
 
 public class NativeX {
     public static final String TAG = "NativeX";
-    AppCompatActivity mActivity;
+    protected final AppCompatActivity mActivity;
-    WebView mWebView;
+    protected final WebView mWebView;
 
-    protected ImageService mImageService;
+    protected final ImageService mImageService;
-    protected TimelineQuery mQuery;
+    protected final TimelineQuery mQuery;
+    public static DownloadService mDlService;
 
     public NativeX(AppCompatActivity activity, WebView webView) {
         mActivity = activity;
         mWebView = webView;
         mImageService = new ImageService(activity);
         mQuery = new TimelineQuery(activity);
+        mDlService = new DownloadService(activity);
     }
 
     public WebResourceResponse handleRequest(final WebResourceRequest request) {
@@ -91,20 +92,7 @@ public class NativeX {
 
     @JavascriptInterface
     public void downloadFromUrl(final String url, final String filename) {
-        Uri uri = Uri.parse(url);
+        mDlService.queue(url, filename);
-        DownloadManager manager = (DownloadManager) mActivity.getSystemService(Context.DOWNLOAD_SERVICE);
-        DownloadManager.Request request = new DownloadManager.Request(uri);
-        request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE);
-
-        // Copy all cookies from the webview to the download request
-        String cookies = android.webkit.CookieManager.getInstance().getCookie(url);
-        request.addRequestHeader("cookie", cookies);
-
-        // Save the file to external storage
-        request.setDestinationInExternalPublicDir(android.os.Environment.DIRECTORY_DOWNLOADS, "memories/" + filename);
-
-        // Start the download
-        manager.enqueue(request);
     }
 
     protected WebResourceResponse routerGet(final String path) throws Exception {
@@ -122,6 +110,10 @@ public class NativeX {
             return makeResponse(mQuery.getDays());
         } else if (path.matches("/api/days/\\d+$")) {
             return makeResponse(mQuery.getByDayId(Long.parseLong(parts[3])));
+        } else if (path.matches("/api/share/url/.+$")) {
+            return makeResponse(mDlService.shareUrl(URLDecoder.decode(parts[4], "UTF-8")));
+        } else if (path.matches("/api/share/blob/.+$")) {
+            return makeResponse(mDlService.shareBlobFromUrl(URLDecoder.decode(parts[4], "UTF-8")));
         }
 
         throw new Exception("Not Found");

app/src/main/java/gallery/memories/service/DownloadBroadcastReceiver.java

@@ -0,0 +1,18 @@
+package gallery.memories.service;
+
+import android.app.DownloadManager;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.widget.Toast;
+
+import gallery.memories.NativeX;
+
+public class DownloadBroadcastReceiver extends BroadcastReceiver {
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        if (NativeX.mDlService != null) {
+            NativeX.mDlService.runDownloadCallback(intent);
+        }
+    }
+}

app/src/main/java/gallery/memories/service/DownloadService.java

@@ -0,0 +1,127 @@
+package gallery.memories.service;
+
+import android.app.DownloadManager;
+import android.content.ContentResolver;
+import android.content.Context;
+import android.content.Intent;
+import android.database.Cursor;
+import android.net.Uri;
+import android.webkit.CookieManager;
+import android.widget.Toast;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.collection.ArrayMap;
+
+import java.util.Map;
+
+public class DownloadService {
+    class DownloadCallback {
+        public void onComplete(Intent intent) {
+        }
+    }
+
+    final AppCompatActivity mActivity;
+    final Map<Long, DownloadCallback> mDownloads = new ArrayMap<>();
+
+    public DownloadService(AppCompatActivity activity) {
+        mActivity = activity;
+    }
+
+    public void runDownloadCallback(Intent intent) {
+        if (mActivity.isDestroyed()) return;
+
+        String action = intent.getAction();
+
+        if (DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals(action)) {
+            long id = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, 0);
+            synchronized (mDownloads) {
+                DownloadCallback callback = mDownloads.get(id);
+                if (callback != null) {
+                    callback.onComplete(intent);
+                    mDownloads.remove(id);
+                    return;
+                }
+            }
+
+            Toast.makeText(mActivity, "Download Complete", Toast.LENGTH_SHORT).show();
+        }
+    }
+
+    public long queue(final String url, final String filename) {
+        Uri uri = Uri.parse(url);
+        DownloadManager manager = (DownloadManager) mActivity.getSystemService(Context.DOWNLOAD_SERVICE);
+        DownloadManager.Request request = new DownloadManager.Request(uri);
+        request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE);
+
+        // Copy all cookies from the webview to the download request
+        String cookies = CookieManager.getInstance().getCookie(url);
+        request.addRequestHeader("cookie", cookies);
+
+        if (!filename.equals("")) {
+            // Save the file to external storage
+            request.setDestinationInExternalPublicDir(android.os.Environment.DIRECTORY_DOWNLOADS, "memories/" + filename);
+        }
+
+        // Start the download
+        return manager.enqueue(request);
+    }
+
+    public Boolean shareUrl(final String url) {
+        Intent intent = new Intent(Intent.ACTION_SEND);
+        intent.setType("text/plain");
+        intent.putExtra(Intent.EXTRA_TEXT, url);
+        mActivity.startActivity(Intent.createChooser(intent, null));
+        return true;
+    }
+
+    public Boolean shareBlobFromUrl(final String url) throws Exception {
+        final long id = queue(url, "");
+        final Object sync = new Object();
+
+        synchronized (mDownloads) {
+            mDownloads.put(id, new DownloadCallback() {
+                @Override
+                public void onComplete(Intent intent) {
+                    synchronized (sync) {
+                        sync.notify();
+                    }
+                }
+            });
+        }
+
+        synchronized (sync) {
+            sync.wait();
+        }
+
+        // Get the URI of the downloaded file
+        String sUri = getDownloadedFileURI(id);
+        if (sUri == null) {
+            throw new Exception("Failed to download file");
+        }
+        Uri uri = Uri.parse(sUri);
+
+        // Get MIME type
+        ContentResolver cR = mActivity.getContentResolver();
+
+        // Create sharing intent
+        Intent intent = new Intent(Intent.ACTION_SEND);
+        intent.setType(mActivity.getContentResolver().getType(uri));
+        intent.putExtra(Intent.EXTRA_STREAM, uri);
+        mActivity.startActivity(Intent.createChooser(intent, null));
+
+        return true;
+    }
+
+    protected String getDownloadedFileURI(long downloadId) {
+        DownloadManager downloadManager = (DownloadManager) mActivity.getSystemService(Context.DOWNLOAD_SERVICE);
+        DownloadManager.Query query = new DownloadManager.Query();
+        query.setFilterById(downloadId);
+        Cursor cursor = downloadManager.query(query);
+        if (cursor.moveToFirst()) {
+            int columnIndex = cursor.getColumnIndex(DownloadManager.COLUMN_LOCAL_URI);
+            return cursor.getString(columnIndex);
+        }
+        cursor.close();
+        return null;
+    }
+}