1 files changed, 118 insertions, 0 deletions
diff --git a/app/src/main/java/org/marcinzelent/liberavem/DataKeeper.java b/app/src/main/java/org/marcinzelent/liberavem/DataKeeper.java
new file mode 100644
index 0000000..67eba43
--- /dev/null
+++ b/app/src/main/java/org/marcinzelent/liberavem/DataKeeper.java
@@ -0,0 +1,118 @@
+package org.marcinzelent.liberavem;
+
+import android.app.Activity;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentManager;
+import android.view.View;
+import android.widget.Toast;
+
+import com.android.volley.Request;
+import com.android.volley.Response;
+import com.android.volley.VolleyError;
+import com.android.volley.toolbox.StringRequest;
+import com.android.volley.toolbox.Volley;
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+import java.util.Locale;
+
+public class DataKeeper {
+
+    private static final DataKeeper instance = new DataKeeper();
+
+    public static DataKeeper getInstance() {
+        return instance;
+    }
+
+    private DataKeeper() {
+    }
+
+    private Bird[] birds;
+    private Observation[] observations;
+
+    public Bird[] getBirds() {
+        return birds;
+    }
+
+    public void setBirds(Bird[] birds) {
+        this.birds = birds;
+    }
+
+    public Observation[] getObservations() {
+        return observations;
+    }
+
+    public void setObservations(Observation[] observations) {
+        this.observations = observations;
+    }
+
+    public void downloadData(final Activity activity) {
+        downloadBirds(activity);
+        downloadObservations(activity);
+    }
+
+    private void downloadBirds(final Activity activity) {
+        String birdsUrl = "http://birdobservationservice.azurewebsites.net/Service1.svc/birds";
+        final StringRequest birdsRequest = new StringRequest(Request.Method.GET, birdsUrl, new Response.Listener<String>() {
+            @Override
+            public void onResponse(String response) {
+                Gson gson = new GsonBuilder().create();
+                birds = gson.fromJson(response, Bird[].class);
+
+                callPopulator(activity);
+            }
+        }, new com.android.volley.Response.ErrorListener() {
+            @Override
+            public void onErrorResponse(VolleyError error) {
+                Toast.makeText(activity, "Couldn't connect to the database!", Toast.LENGTH_LONG).show();
+            }
+        });
+
+        Volley.newRequestQueue(activity).add(birdsRequest);
+    }
+
+    private void downloadObservations(final Activity activity) {
+        String observationsUrl = "http://birdobservationservice.azurewebsites.net/Service1.svc/observations";
+        final StringRequest observationsRequest = new StringRequest(Request.Method.GET, observationsUrl, new Response.Listener<String>() {
+            @Override
+            public void onResponse(String response) {
+                Gson gson = new GsonBuilder().create();
+                observations = gson.fromJson(response, Observation[].class);
+                for (Observation o : observations) {
+                    int p = o.getCreated().indexOf('+');
+                    long epoch = Long.parseLong(o.getCreated().substring(6, p));
+                    Date date = new Date(epoch);
+                    String formatted = new SimpleDateFormat("dd.MM.yyyy HH:mm", Locale.ENGLISH).format(date);
+                    o.setCreated(formatted);
+                }
+                callPopulator(activity);
+            }
+        }, new com.android.volley.Response.ErrorListener() {
+            @Override
+            public void onErrorResponse(VolleyError error) {
+                Toast.makeText(activity, "Couldn't connect to the database!", Toast.LENGTH_LONG).show();
+            }
+        });
+
+        Volley.newRequestQueue(activity).add(observationsRequest);
+    }
+
+    private void callPopulator(Activity activity) {
+        if (birds != null && observations != null) {
+            MyObservationsFragment mo = (MyObservationsFragment) ((MainActivity)activity).getAllFragments().get(0);
+            List<Observation> myObservationsList = new ArrayList<>();
+            for (Observation o : observations)
+                if (o.getUserId().equals("Nancy")) myObservationsList.add(o);
+
+            Observation[] myObservations = new Observation[myObservationsList.size()];
+            myObservations = myObservationsList.toArray(myObservations);
+            mo.populateList(myObservations, birds);
+            AllObservationsFragment aof = (AllObservationsFragment) ((MainActivity)activity).getAllFragments().get(1);
+            aof.populateList(observations, birds);
+        }
+    }
+}