+package org.fedorahosted.freeotp;
+
+import java.util.LinkedList;
+import java.util.List;
+
+import org.fedorahosted.freeotp.Token.TokenUriInvalidException;
+import org.json.JSONArray;
+import org.json.JSONException;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+
+public class TokenStore {
+ private static final String NAME = "tokens";
+ private static final String ORDER = "tokenOrder";
+ private SharedPreferences prefs;
+
+ private List<String> getTokenOrder() {
+ try {
+ JSONArray array = new JSONArray(prefs.getString(ORDER, null));
+ List<String> out = new LinkedList<String>();
+ for (int i = 0; i < array.length(); i++)
+ out.add(array.getString(i));
+ return out;
+ } catch (JSONException e) {
+ } catch (NullPointerException e) {
+ }
+
+ return new LinkedList<String>();
+ }
+
+ private SharedPreferences.Editor setTokenOrder(List<String> order) {
+ JSONArray array = new JSONArray();
+ for (String key : order)
+ array.put(key);
+
+ return prefs.edit().putString(ORDER, array.toString());
+ }
+
+ public TokenStore(Context ctx) {
+ prefs = ctx.getApplicationContext()
+ .getSharedPreferences(NAME, Context.MODE_PRIVATE);
+ }
+
+ public void add(Token token) {
+ String key = token.getID();
+
+ if (prefs.contains(key))
+ return;
+
+ List<String> order = getTokenOrder();
+ order.add(0, key);
+ setTokenOrder(order).putString(key, token.toString()).apply();
+ }
+
+ public void del(int index) {
+ List<String> order = getTokenOrder();
+ String key = order.remove(index);
+ setTokenOrder(order).remove(key).apply();
+ }
+
+ public void save(Token token) {
+ prefs.edit().putString(token.getID(), token.toString()).apply();
+ }
+
+ public Token get(int index) {
+ try {
+ return new Token(prefs.getString(getTokenOrder().get(index), null));
+ } catch (TokenUriInvalidException e) {
+ e.printStackTrace();
+ } catch (NullPointerException e) {
+ e.printStackTrace();
+ }
+
+ return null;
+ }
+
+ public int getTokenCount() {
+ return getTokenOrder().size();
+ }
+
+ public void move(int fromIndex, int toIndex) {
+ List<String> order = getTokenOrder();
+ if (fromIndex < 0 || fromIndex > order.size())
+ return;
+ if (toIndex < 0 || toIndex > order.size())
+ return;
+
+ order.add(toIndex, order.remove(fromIndex));
+ setTokenOrder(order).apply();
+ }
+}