1 files changed, 90 insertions, 0 deletions
diff --git a/app/src/main/java/com/camilstaps/common/DatedStringPreferenceSet.java b/app/src/main/java/com/camilstaps/common/DatedStringPreferenceSet.java
new file mode 100644
index 0000000..d61ba37
--- /dev/null
+++ b/app/src/main/java/com/camilstaps/common/DatedStringPreferenceSet.java
@@ -0,0 +1,90 @@
+package com.camilstaps.common;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.preference.PreferenceManager;
+
+import com.camilstaps.taize.DailyReading;
+
+import org.json.JSONException;
+
+import java.text.ParseException;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Set;
+
+/**
+ * Created by camilstaps on 11-4-15.
+ */
+public class DatedStringPreferenceSet {
+
+    public static Set<Object> get(Context context, String key, Class type) {
+        Set<Object> set = new HashSet<>();
+        for (String s : PreferenceManager.getDefaultSharedPreferences(context).getStringSet(key, new HashSet<String>())) {
+            try {
+                set.add(type.cast(DatedString.fromString(s, type)));
+            } catch (JSONException e) {
+                e.printStackTrace();
+            } catch (ParseException e) {
+                e.printStackTrace();
+            }
+        }
+        return set;
+    }
+
+    public static void put(Context context, String key, Set<DatedString> set) {
+        SharedPreferences.Editor editor = PreferenceManager.getDefaultSharedPreferences(context).edit();
+        Set<String> putSet = new HashSet<>();
+        for (DatedString item : set) {
+            putSet.add(item.toString());
+        }
+        editor.putStringSet(key, putSet);
+        editor.apply();
+    }
+
+    public static void add(Context context, String key, DatedString object) {
+        Set<DatedString> set = (Set) DatedStringPreferenceSet.get(context, key, DatedString.class);
+        set.add(object);
+        DatedStringPreferenceSet.put(context, key, (Set) set);
+    }
+
+    public static void update(Context context, String key, DatedString object) {
+        Set<DatedString> set = (Set) get(context, key, object.getClass());
+        Iterator<DatedString> iterator = set.iterator();
+        boolean add = false;
+        while (iterator.hasNext()) {
+            DatedString this_object = iterator.next();
+            if (this_object.getDate().equals(object.getDate())) {
+                iterator.remove();
+                add = true;
+            }
+        }
+        if (add) {
+            set.add(object);
+        }
+        put(context, key, set);
+    }
+
+    public static boolean has(Context context, String key, Date date) {
+        Set<DatedString> set = (Set) get(context, key, DatedString.class);
+        for (DatedString item : set) {
+            if (item.getDate().equals(date)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public static void updateOrAdd(Context context, String key, DatedString object) {
+        if (has(context, key, object.getDate())) {
+            update(context, key, object);
+        } else {
+            add(context, key, object);
+        }
+    }
+
+    public static void clear(Context context, String key) {
+        put(context, key, new HashSet<DatedString>());
+    }
+
+}