improvements

app/src/main/java/gr/thmmy/mthmmy/utils/parsing/ExternalAsyncTask.java

@@ -0,0 +1,80 @@
+package gr.thmmy.mthmmy.utils.parsing;
+
+import android.os.AsyncTask;
+
+public abstract class ExternalAsyncTask<U, V> extends AsyncTask<U, Void, V> {
+
+    private OnParseTaskStartedListener onParseTaskStartedListener;
+    private OnParseTaskCancelledListener onParseTaskCancelledListener;
+    private OnParseTaskFinishedListener<V> onParseTaskFinishedListener;
+
+    @Override
+    protected void onPreExecute() {
+        if (onParseTaskStartedListener != null)
+            onParseTaskStartedListener.onParseStart();
+        else
+            super.onPreExecute();
+    }
+
+    @Override
+    protected void onCancelled() {
+        if (onParseTaskCancelledListener != null)
+            onParseTaskCancelledListener.onParseCancel();
+        else
+            super.onCancelled();
+    }
+
+    @Override
+    protected void onCancelled(V v) {
+        if (onParseTaskCancelledListener != null)
+            onParseTaskCancelledListener.onParseCancel();
+        else
+            super.onCancelled();
+    }
+
+    @Override
+    protected void onPostExecute(V v) {
+        if (onParseTaskFinishedListener != null)
+            onParseTaskFinishedListener.onParseFinish(v);
+        else
+            super.onPostExecute(v);
+    }
+
+    public ExternalAsyncTask(OnParseTaskStartedListener onParseTaskStartedListener, OnParseTaskCancelledListener onParseTaskCancelledListener,
+                        OnParseTaskFinishedListener<V> onParseTaskFinishedListener) {
+        this.onParseTaskStartedListener = onParseTaskStartedListener;
+        this.onParseTaskCancelledListener = onParseTaskCancelledListener;
+        this.onParseTaskFinishedListener = onParseTaskFinishedListener;
+    }
+
+    public ExternalAsyncTask(OnParseTaskStartedListener onParseTaskStartedListener, OnParseTaskFinishedListener<V> onParseTaskFinishedListener) {
+        this.onParseTaskStartedListener = onParseTaskStartedListener;
+        this.onParseTaskFinishedListener = onParseTaskFinishedListener;
+    }
+
+    public ExternalAsyncTask() { }
+
+    public void setOnParseTaskStartedListener(OnParseTaskStartedListener onParseTaskStartedListener) {
+        this.onParseTaskStartedListener = onParseTaskStartedListener;
+    }
+
+    public void setOnParseTaskCancelledListener(OnParseTaskCancelledListener onParseTaskCancelledListener) {
+        this.onParseTaskCancelledListener = onParseTaskCancelledListener;
+    }
+
+    public void setOnParseTaskFinishedListener(OnParseTaskFinishedListener<V> onParseTaskFinishedListener) {
+        this.onParseTaskFinishedListener = onParseTaskFinishedListener;
+    }
+
+    public interface OnParseTaskStartedListener {
+        void onParseStart();
+    }
+
+    public interface OnParseTaskCancelledListener {
+        void onParseCancel();
+    }
+
+    public interface OnParseTaskFinishedListener<V> {
+        void onParseFinish(V result);
+    }
+}

app/src/main/java/gr/thmmy/mthmmy/utils/parsing/NetworkTask.java

@@ -0,0 +1,65 @@
+package gr.thmmy.mthmmy.utils.parsing;
+
+import org.jsoup.Jsoup;
+import org.jsoup.nodes.Document;
+
+import java.io.IOException;
+
+import gr.thmmy.mthmmy.base.BaseApplication;
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.Response;
+import timber.log.Timber;
+
+public abstract class NetworkTask<T> extends ExternalAsyncTask<String, Parcel<T>> {
+
+    private OnParseTaskFinishedListener<T> onParseTaskFinishedListener;
+
+    @Override
+    protected final Parcel<T> doInBackground(String... input) {
+        Request request = createRequest(input);
+        Response response = getResponse(request, BaseApplication.getInstance().getClient());
+        String responseBodyString;
+        try {
+            responseBodyString = response.body().string();
+        } catch (IOException e) {
+            Timber.e(e);
+            return new Parcel<>(Parcel.ResultCode.NETWORK_ERROR, null);
+        }
+        try {
+            T data = performTask(Jsoup.parse(responseBodyString));
+            int resultCode = getResultCode(response, data);
+            return new Parcel<>(resultCode, data);
+        } catch (ParseException pe) {
+            Timber.e(pe);
+            return new Parcel<>(Parcel.ResultCode.PARSE_ERROR, null);
+        } catch (Exception e) {
+            Timber.e(e);
+            return new Parcel<>(Parcel.ResultCode.PERFORM_TASK_ERROR, null);
+        }
+    }
+
+    @Override
+    protected void onPostExecute(Parcel<T> tParcel) {
+        if (onParseTaskFinishedListener != null)
+            onParseTaskFinishedListener.onParseFinish(tParcel.getResultCode(), tParcel.getData());
+        else
+            super.onPostExecute(tParcel);
+    }
+
+    abstract Request createRequest(String... input);
+
+    abstract Response getResponse(Request request, OkHttpClient client);
+
+    abstract T performTask(Document document) throws ParseException;
+
+    abstract int getResultCode(Response response, T data);
+
+    public void setOnParseTaskFinishedListener(OnParseTaskFinishedListener<T> onParseTaskFinishedListener) {
+        this.onParseTaskFinishedListener = onParseTaskFinishedListener;
+    }
+
+    public interface OnParseTaskFinishedListener<T> {
+        void onParseFinish(int resultCOde, T data);
+    }
+}

app/src/main/java/gr/thmmy/mthmmy/utils/parsing/NewParseTask.java

@@ -1,68 +1,27 @@
 package gr.thmmy.mthmmy.utils.parsing;
 
-import android.os.AsyncTask;
+import org.jsoup.nodes.Document;
 
-public abstract class NewParseTask<U, V> extends AsyncTask<U, Void, V> {
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.Response;
 
-    private OnParseTaskStartedListener onParseTaskStartedListener;
+public abstract class NewParseTask<T> extends NetworkTask<T> {
-    private OnParseTaskCancelledListener onParseTaskCancelledListener;
-    private OnParseTaskFinishedListener<V> onParseTaskFinishedListener;
 
     @Override
-    protected void onPreExecute() {
+    final T performTask(Document document) throws ParseException {
-        if (onParseTaskStartedListener != null)
+        try {
-            onParseTaskStartedListener.onParseStart();
+            return parse(document);
-        else
+        } catch (Exception e) {
-            super.onPreExecute();
+            throw new ParseException("Parse failed.");
         }
-
-    @Override
-    protected void onCancelled() {
-        if (onParseTaskCancelledListener != null)
-            onParseTaskCancelledListener.onParseCancel();
-        else
-            super.onCancelled();
     }
 
-    @Override
+    abstract Request createRequest(String... input);
-    protected void onCancelled(V v) {
-        if (onParseTaskCancelledListener != null)
-            onParseTaskCancelledListener.onParseCancel();
-        else
-            super.onCancelled();
-    }
 
-    @Override
+    abstract Response getResponse(Request request, OkHttpClient client);
-    protected void onPostExecute(V v) {
-        if (onParseTaskFinishedListener != null)
-            onParseTaskFinishedListener.onParseFinish(v);
-        else
-            super.onPostExecute(v);
-    }
 
-    public NewParseTask(OnParseTaskStartedListener onParseTaskStartedListener, OnParseTaskCancelledListener onParseTaskCancelledListener,
+    abstract T parse (Document document);
-                        OnParseTaskFinishedListener<V> onParseTaskFinishedListener) {
-        this.onParseTaskStartedListener = onParseTaskStartedListener;
-        this.onParseTaskCancelledListener = onParseTaskCancelledListener;
-        this.onParseTaskFinishedListener = onParseTaskFinishedListener;
-    }
 
-    public NewParseTask(OnParseTaskStartedListener onParseTaskStartedListener, OnParseTaskFinishedListener<V> onParseTaskFinishedListener) {
+    abstract int getResultCode(Response response, T data);
-        this.onParseTaskStartedListener = onParseTaskStartedListener;
-        this.onParseTaskFinishedListener = onParseTaskFinishedListener;
-    }
-
-    public NewParseTask() { }
-
-    public interface OnParseTaskStartedListener {
-        void onParseStart();
-    }
-
-    public interface OnParseTaskCancelledListener {
-        void onParseCancel();
-    }
-
-    public interface OnParseTaskFinishedListener<V> {
-        void onParseFinish(V result);
-    }
 }

app/src/main/java/gr/thmmy/mthmmy/utils/parsing/Parcel.java

@@ -0,0 +1,51 @@
+package gr.thmmy.mthmmy.utils.parsing;
+
+public class Parcel<T> {
+
+    private int resultCode;
+    private T data;
+
+    public Parcel(int resultCode, T data) {
+        this.resultCode = resultCode;
+        this.data = data;
+    }
+
+    public int getResultCode() {
+        return resultCode;
+    }
+
+    public T getData() {
+        return data;
+    }
+
+    public class ResultCode {
+        /**
+         * The request was successful
+         */
+        public static final int SUCCESSFUL = 0;
+        /**
+         * Error 404, page was not found
+         */
+        public static final int NOT_FOUND = 1;
+        /**
+         * User session ended while posting the reply
+         */
+        public static final int SESSION_ENDED = 2;
+        /**
+         * Exception occured while parsing
+         */
+        public static final int PARSE_ERROR = 3;
+        /**
+         * Other undefined of unidentified error
+         */
+        public static final int OTHER_ERROR = 4;
+        /**
+         * Failed to connect to thmmy.gr
+         */
+        public static final int NETWORK_ERROR = 5;
+        /**
+         * Error while excecuting NetworkTask's performTask()
+         */
+        public static final int PERFORM_TASK_ERROR = 6;
+    }
+}