Can create private conversations from friends list

app/src/main/java/org/communiquons/android/comunic/client/MainActivity.java

@@ -4,10 +4,13 @@ import android.app.AlertDialog;
 import android.app.FragmentTransaction;
 import android.content.DialogInterface;
 import android.content.Intent;
+import android.os.AsyncTask;
 import android.os.Bundle;
 import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
 import android.support.design.widget.BottomNavigationView;
 import android.support.v7.app.AppCompatActivity;
+import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.widget.Toast;
@@ -18,6 +21,7 @@ import org.communiquons.android.comunic.client.data.Account.AccountUtils;
 import org.communiquons.android.comunic.client.data.DatabaseHelper;
 import org.communiquons.android.comunic.client.data.conversations.ConversationsListHelper;
 import org.communiquons.android.comunic.client.data.friendsList.FriendRefreshLoopRunnable;
+import org.communiquons.android.comunic.client.data.utils.UiUtils;
 import org.communiquons.android.comunic.client.fragments.ConversationFragment;
 import org.communiquons.android.comunic.client.fragments.ConversationsListFragment;
 import org.communiquons.android.comunic.client.fragments.FriendsListFragment;
@@ -34,6 +38,11 @@ public class MainActivity extends AppCompatActivity
         implements ConversationsListHelper.openConversationListener,
         ConversationsListHelper.updateConversationListener {
 
+    /**
+     * Debug tag
+     */
+    private static final String TAG = "MainActivity";
+
     /**
      * Account object
      */
@@ -54,6 +63,11 @@ public class MainActivity extends AppCompatActivity
      */
     private DatabaseHelper dbHelper;
 
+    /**
+     * Conversations list helper
+     */
+    private ConversationsListHelper conversationsListHelper;
+
     /**
      * Bottom navigation view
      */
@@ -87,6 +101,9 @@ public class MainActivity extends AppCompatActivity
         //Initialize DatabaseHelper
         dbHelper = DatabaseHelper.getInstance(this);
 
+        //Intialize conversation list helper
+        conversationsListHelper = new ConversationsListHelper(this, dbHelper);
+
         //If it is the first time the application is launched, start the user friends tab
         if(savedInstanceState == null){
             openFriendsFragment();
@@ -279,6 +296,37 @@ public class MainActivity extends AppCompatActivity
 
     }
 
+    @Override
+    public void openPrivateConversation(int userID) {
+        //Log action
+        Log.v(TAG, "Open private conversation with user ID " + userID);
+
+        //Create a loading dialog
+        final AlertDialog dialog = UiUtils.create_loading_dialog(this);
+
+        //Get conversation ID in the background
+        new AsyncTask<Integer, Void, Integer>(){
+
+            @Override
+            protected Integer doInBackground(Integer... params) {
+                return conversationsListHelper.getPrivate(params[0], true);
+            }
+
+            @Override
+            protected void onPostExecute(@Nullable Integer integer) {
+
+                //Close loading dialog
+                dialog.dismiss();
+
+                if(integer != null)
+                    openConversation(integer);
+                else
+                    Toast.makeText(MainActivity.this, R.string.err_get_private_conversation,
+                            Toast.LENGTH_SHORT).show();
+            }
+        }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, userID);
+    }
+
     @Override
     public void createConversation() {
         updateConversation(0);

app/src/main/java/org/communiquons/android/comunic/client/data/conversations/ConversationsListHelper.java

@@ -103,6 +103,49 @@ public class ConversationsListHelper {
         return downloadSingle(convID);
     }
 
+    /**
+     * Search and return the ID of a private conversation with a specified user
+     *
+     * @param userID The ID of the target user
+     * @param allowCreate If set to true, then if the server does not find any matching conversation,
+     *                    it will automatically create a new one
+     * @return The ID of the conversation or null in case of failure
+     */
+    @Nullable
+    public Integer getPrivate(int userID, boolean allowCreate){
+
+        //Prepare an API request
+        APIRequestParameters params = new APIRequestParameters(mContext,
+                "conversations/getPrivate");
+        params.addParameter("otherUser", userID);
+        params.addParameter("allowCreate", allowCreate);
+
+        //Try to perform request
+        try {
+            APIResponse response = new APIRequest().exec(params);
+            JSONObject object = response.getJSONObject();
+
+            //Check for conversations ID
+            if(!object.has("conversationsID"))
+                return null;
+
+            //Get conversations ID
+            JSONArray conversations = object.getJSONArray("conversationsID");
+
+            //Check if the array is empty
+            if(conversations.length() == 0)
+                return null;
+            else
+                return conversations.getInt(0);
+        }
+
+        //Catch errors
+        catch (Exception e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+
     /**
      * Get the display name of a conversation
      *

app/src/main/java/org/communiquons/android/comunic/client/data/utils/UiUtils.java

@@ -1,9 +1,12 @@
 package org.communiquons.android.comunic.client.data.utils;
 
+import android.app.AlertDialog;
 import android.content.Context;
 import android.graphics.drawable.Drawable;
 import android.os.Build;
 
+import org.communiquons.android.comunic.client.R;
+
 /**
  * User Interface utilities
  *
@@ -39,4 +42,23 @@ public class UiUtils {
     public static Drawable getDrawable(Context context, int drawable_id){
         return context.getResources().getDrawable(drawable_id, context.getTheme());
     }
+
+    /**
+     * Create and display a loading dialog
+     *
+     * Use dismiss() to close this dialog
+     *
+     * @param context The context of the application
+     * @return The created alert dialog
+     */
+    public static AlertDialog create_loading_dialog(Context context){
+
+        //Create alert dialog
+        AlertDialog.Builder builder = new AlertDialog.Builder(context)
+                .setView(R.layout.dialog_loading);
+
+        //Display the dialog
+        return builder.show();
+    }
+
 }

app/src/main/java/org/communiquons/android/comunic/client/fragments/FriendsListFragment.java

@@ -101,6 +101,16 @@ public class FriendsListFragment extends Fragment {
 
         //Create get user helper
         usersHelper = new GetUsersHelper(mContext, mDbHelper);
+
+        //Cast activity to convOpener
+        try {
+            convOpener = (ConversationsListHelper.openConversationListener) getActivity();
+        } catch (ClassCastException e){
+            e.printStackTrace();
+
+            throw new RuntimeException(getActivity().getClass().getName() + " must implement" +
+                    "ConversationsListHelper.openConversationListener !");
+        }
     }
 
     @Nullable
@@ -225,6 +235,11 @@ public class FriendsListFragment extends Fragment {
 
         switch (item.getItemId()){
 
+            //To open a private conversation with the friend
+            case R.id.menu_fragment_friendslist_private_conversation:
+                convOpener.openPrivateConversation(friendsList.get(friendPos).getFriend().getId());
+                return true;
+
             //To delete the friend
             case R.id.menu_fragment_friendslist_delete_friend:
                 delete_friend(friendPos);

app/src/main/res/layout/dialog_loading.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="horizontal" android:layout_width="wrap_content"
+    android:layout_height="wrap_content">
+
+    <ProgressBar
+        android:layout_gravity="center"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content" />
+
+    <TextView
+        android:layout_gravity="center"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/dialog_loading_msg"/>
+
+</LinearLayout>

app/src/main/res/menu/menu_fragment_friendslist_item.xml

@@ -1,6 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
 <menu xmlns:android="http://schemas.android.com/apk/res/android">
 
+    <!-- Start private conversation -->
+    <item
+        android:id="@+id/menu_fragment_friendslist_private_conversation"
+        android:title="@string/action_friends_start_private_conversation" />
+
     <!-- Delete the friend -->
     <item
         android:id="@+id/menu_fragment_friendslist_delete_friend"

app/src/main/res/values/strings.xml

@@ -92,4 +92,7 @@
     <string name="fragment_update_conversation_members_menu_delete">Remove</string>
     <string name="err_get_conversation_info">Could not get information about the conversation !</string>
     <string name="err_conversation_update">Could not update conversation !</string>
+    <string name="action_friends_start_private_conversation">Private conversation</string>
+    <string name="err_get_private_conversation">Could not get a private conversation !</string>
+    <string name="dialog_loading_msg">Loading…</string>
 </resources>