Implemented flattr utils methods

2 files changed, 177 insertions, 11 deletions

diff --git a/src/de/podfetcher/util/FlattrUtil.java b/src/de/podfetcher/util/FlattrUtil.java
deleted file mode 100644
index bd94cec9a..000000000
--- a/src/de/podfetcher/util/FlattrUtil.java
+++ /dev/null
@@ -1,11 +0,0 @@
-package de.podfetcher.util;
-
-/** Utility methods for doing something with flattr. */
-public class FlattrUtil {
-
-	private static final String HOST_NAME = "";
-	private static final String APP_KEY = "";
-	private static final String APP_SECRET = "";
-
-	private static final String PREF_ACCESS_TOKEN = "de.danoeh.antennapod.preference.flattrAccessToken";
-}
diff --git a/src/de/podfetcher/util/FlattrUtils.java b/src/de/podfetcher/util/FlattrUtils.java
new file mode 100644
index 000000000..7a46bae8a
--- /dev/null
+++ b/src/de/podfetcher/util/FlattrUtils.java
@@ -0,0 +1,177 @@
+package de.podfetcher.util;
+
+import java.util.EnumSet;
+
+import org.shredzone.flattr4j.FlattrFactory;
+import org.shredzone.flattr4j.FlattrService;
+import org.shredzone.flattr4j.exception.FlattrException;
+import org.shredzone.flattr4j.exception.ForbiddenException;
+import org.shredzone.flattr4j.oauth.AccessToken;
+import org.shredzone.flattr4j.oauth.AndroidAuthenticator;
+import org.shredzone.flattr4j.oauth.Scope;
+
+import de.podfetcher.PodcastApp;
+import de.podfetcher.R;
+import de.podfetcher.activity.FlattrAuthActivity;
+
+import android.app.AlertDialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.DialogInterface.OnClickListener;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.net.Uri;
+import android.preference.PreferenceManager;
+import android.util.Log;
+
+/** Utility methods for doing something with flattr. */
+public class FlattrUtils {
+	private static final String TAG = "FlattrUtils";
+
+	private static final String HOST_NAME = "";
+	private static final String APP_KEY = "";
+	private static final String APP_SECRET = "";
+
+	private static final String PREF_ACCESS_TOKEN = "de.danoeh.antennapod.preference.flattrAccessToken";
+
+	private static AndroidAuthenticator createAuthenticator() {
+		return new AndroidAuthenticator(HOST_NAME, APP_KEY, APP_SECRET);
+	}
+
+	public static void startAuthProcess(Context context) throws FlattrException {
+		AndroidAuthenticator auth = createAuthenticator();
+		auth.setScope(EnumSet.of(Scope.FLATTR));
+		Intent intent = auth.createAuthenticateIntent();
+		context.startActivity(intent);
+	}
+
+	/**
+	 * Returns the access token from the preferences or null if no access token
+	 * was saved before.
+	 */
+	public static AccessToken retrieveToken() {
+		Log.d(TAG, "Retrieving access token");
+		String token = PreferenceManager.getDefaultSharedPreferences(
+				PodcastApp.getInstance()).getString(PREF_ACCESS_TOKEN, null);
+		if (token != null) {
+			Log.d(TAG, "Found access token");
+			return new AccessToken(token);
+		} else {
+			Log.d(TAG, "No access token found");
+			return null;
+		}
+	}
+
+	/** Returns true if the application has saved an access token */
+	public static boolean hasToken() {
+		return retrieveToken() != null;
+	}
+
+	/** Stores the token as a preference */
+	private static void storeToken(AccessToken token) {
+		Log.d(TAG, "Storing token");
+		SharedPreferences.Editor editor = PreferenceManager
+				.getDefaultSharedPreferences(PodcastApp.getInstance()).edit();
+		if (token != null) {
+			editor.putString(PREF_ACCESS_TOKEN, token.getToken());
+		} else {
+			editor.putString(PREF_ACCESS_TOKEN, null);
+		}
+		editor.commit();
+	}
+
+	public static void deleteToken() {
+		Log.d(TAG, "Deleting flattr token");
+		storeToken(null);
+	}
+
+	public static void clickUrl(Context context, String url) {
+		FlattrFactory factory = FlattrFactory.getInstance();
+		AccessToken token = retrieveToken();
+		if (token != null) {
+			FlattrService fs = factory.createFlattrService(retrieveToken());
+			try {
+				fs.click(url);
+			} catch (ForbiddenException fe) {
+				deleteToken();
+				showForbiddenDialog(context, url);
+			} catch (FlattrException e) {
+				e.printStackTrace();
+			}
+		} else {
+			showNoTokenDialog(context, url);
+		}
+	}
+
+	public static AccessToken handleCallback(Uri uri) throws FlattrException {
+		AndroidAuthenticator auth = createAuthenticator();
+		AccessToken token = auth.fetchAccessToken(uri);
+		if (token != null) {
+			Log.d(TAG, "Successfully got token");
+			storeToken(token);
+			return token;
+		} else {
+			Log.w(TAG, "Flattr token was null");
+			return null;
+		}
+	}
+
+	private static void showNoTokenDialog(final Context context,
+			final String url) {
+		Log.d(TAG, "Creating showNoTokenDialog");
+		AlertDialog.Builder builder = new AlertDialog.Builder(context);
+		builder.setTitle(R.string.no_flattr_token_title);
+		builder.setMessage(R.string.no_flattr_token_msg);
+		builder.setPositiveButton(R.string.authenticate_now_label,
+				new OnClickListener() {
+
+					@Override
+					public void onClick(DialogInterface dialog, int which) {
+						context.startActivity(new Intent(context,
+								FlattrAuthActivity.class));
+					}
+
+				});
+		builder.setNegativeButton(R.string.visit_website_label,
+				new OnClickListener() {
+
+					@Override
+					public void onClick(DialogInterface dialog, int which) {
+						Uri uri = Uri.parse(url);
+						context.startActivity(new Intent(Intent.ACTION_VIEW,
+								uri));
+					}
+
+				});
+		builder.create().show();
+	}
+
+	private static void showForbiddenDialog(final Context context,
+			final String url) {
+		AlertDialog.Builder builder = new AlertDialog.Builder(context);
+		builder.setTitle(R.string.action_forbidden_title);
+		builder.setMessage(R.string.action_forbidden_msg);
+		builder.setPositiveButton(R.string.authenticate_now_label,
+				new OnClickListener() {
+
+					@Override
+					public void onClick(DialogInterface dialog, int which) {
+						context.startActivity(new Intent(context,
+								FlattrAuthActivity.class));
+					}
+
+				});
+		builder.setNegativeButton(R.string.visit_website_label,
+				new OnClickListener() {
+
+					@Override
+					public void onClick(DialogInterface dialog, int which) {
+						Uri uri = Uri.parse(url);
+						context.startActivity(new Intent(Intent.ACTION_VIEW,
+								uri));
+					}
+
+				});
+		builder.create().show();
+	}
+}