/*
    * Copyright (C) 2003-2015 eXo Platform SAS.
    *
    * This is free software; you can redistribute it and/or modify it
    * under the terms of the GNU Lesser General Public License as
    * published by the Free Software Foundation; either version 3 of
    * the License, or (at your option) any later version.
    *
    * This software is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this software; if not, write to the Free
   * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
   * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
   */
  package org.exoplatform.shareextension;
  
  import org.exoplatform.R;
  import org.exoplatform.model.ExoAccount;
  import org.exoplatform.singleton.ServerSettingHelper;
  import org.exoplatform.utils.Log;
  
  import android.content.Context;
  import android.graphics.Bitmap;
  import android.os.Bundle;
  import android.support.v4.app.Fragment;
  import android.text.Editable;
  import android.text.TextWatcher;
  import android.view.LayoutInflater;
  import android.view.MotionEvent;
  import android.view.View;
  import android.view.ViewGroup;
  import android.view.inputmethod.InputMethodManager;
  import android.widget.EditText;
  import android.widget.ImageView;
  import android.widget.ScrollView;
  import android.widget.TextView;
  
  /**
   * Created by The eXo Platform SAS
   * 
   * @author Philippe Aristote paristote@exoplatform.com
   * @since Jun 3, 2015
   */
  public class ComposeFragment extends Fragment {
  
    private static ComposeFragment instance;
  
    public static final String     COMPOSE_FRAGMENT = "compose_fragment";
  
    private EditText               etPostMessage;
  
    private TextView               tvAccount, tvSpace, tvMoreAttachments;
  
    private ImageView              imgThumb;
    
    private Bitmap                 bmThumb;
    
    private int                    nbAttachments;
  
    private ScrollView             scroller;
  
    private TextWatcher            postValidator;
  
    public ComposeFragment() {
      postValidator = new TextWatcher() {
        @Override
        public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
          // Enables the post button if the composer text field contains a message
          enableDisableMainButton();
        }
  
        @Override
        public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
        }
  
        @Override
        public void afterTextChanged(Editable e) {
          // Update the value of post message after edit
          getShareActivity().setPostMessage(e.toString());
        }
      };
    }
  
    public static ComposeFragment getFragment() {
      if (instance == null) {
        instance = new ComposeFragment();
      }
      return instance;
    }
  
    private void init() {
      etPostMessage.setText(getShareActivity().getPostInfo().postMessage);
      // Show a > icon on the account selector if 2 or more accounts exist
      boolean manyAccounts = ServerSettingHelper.getInstance().twoOrMoreAccountsExist(getActivity());
      if (manyAccounts) {
       tvAccount.setCompoundDrawablesWithIntrinsicBounds(0, 0, R.drawable.icon_chevron_right_grey, 0);
     } else {
       tvAccount.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
     }
   }
 
   public void setTouchListener() {
     // Open the soft keyboard and give focus to the edit text field when the
     // scroll view is tapped
     scroller.setOnTouchListener(new View.OnTouchListener() {
       @Override
       public boolean onTouch(View v, MotionEvent event) {
         if (event.getAction() == MotionEvent.ACTION_DOWN) {
           etPostMessage.requestFocus();
           InputMethodManager mgr = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
           mgr.showSoftInput(etPostMessage, InputMethodManager.SHOW_IMPLICIT);
         }
         return v.performClick();
       }
     });
   }
 
   public void setThumbnailImage(Bitmap bm) {
 	bmThumb = bm;
     if (bm != null) {
       imgThumb.setImageBitmap(bm);
     }
   }
   
   public void setNumberOfAttachments(int nb) {
 	nbAttachments = nb;
 	if (nb > 1) {
 	    tvMoreAttachments.setText("+ " + (nb-1));
 	    tvMoreAttachments.setVisibility(View.VISIBLE);
 	  }
   }
 
   @Override
   public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
     Log.d("TEST", "onCreateView Compose");
     View layout = inflater.inflate(R.layout.share_extension_compose_fragment, container, false);
     etPostMessage = (EditText) layout.findViewById(R.id.share_post_message);
     etPostMessage.addTextChangedListener(postValidator);
     tvAccount = (TextView) layout.findViewById(R.id.share_account);
     tvAccount.setOnClickListener(new View.OnClickListener() {
       @Override
       public void onClick(View v) {
         getShareActivity().onSelectAccount();
       }
     });
     tvSpace = (TextView) layout.findViewById(R.id.share_space);
     tvSpace.setOnClickListener(new View.OnClickListener() {
       @Override
       public void onClick(View v) {
         getShareActivity().onSelectSpace();
       }
     });
     tvMoreAttachments = (TextView) layout.findViewById(R.id.share_attachment_more);
     imgThumb = (ImageView) layout.findViewById(R.id.share_attachment_thumbnail);
     scroller = (ScrollView) layout.findViewById(R.id.share_scroll_wrapper);
     init();
     return layout;
   }
 
   @Override
   public void onResume() {
     setTouchListener();
     getShareActivity().toggleMainButtonType(ShareActivity.BUTTON_TYPE_SHARE);
     if (!getShareActivity().isProgressVisible())
       getShareActivity().toggleProgressVisible(false);
     ExoAccount selectedAccount = getShareActivity().getPostInfo().ownerAccount;
     if (selectedAccount != null)
       tvAccount.setText(selectedAccount.accountName + " (" + selectedAccount.username + ")");
     setThumbnailImage(bmThumb);
     setNumberOfAttachments(nbAttachments);
     super.onResume();
   }
 
   /*
    * GETTERS & SETTERS
    */
 
   public EditText getEditText() {
     return etPostMessage;
   }
 
   public ShareActivity getShareActivity() {
     if (getActivity() instanceof ShareActivity) {
       return (ShareActivity) getActivity();
     } else {
       throw new UnsupportedOperationException("This fragment is only valid in the activity org.exoplatform.shareextension.ShareActivity");
     }
   }
 
   public String getPostMessage() {
     return etPostMessage != null ? etPostMessage.getText().toString() : "";
   }
 
   public void setSpaceSelectorLabel(String label) {
     tvSpace.setText(label);
   }
 
   private void enableDisableMainButton() {
     if (isAdded()) {
       boolean postEmpty = "".equals(etPostMessage.getText().toString());
       getShareActivity().enableDisableMainButton(!postEmpty);
     }
   }
 
 }