package de.blinkt.openvpn;


import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

import android.app.ActionBar;
import android.app.ActionBar.Tab;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.Fragment;
import android.app.FragmentTransaction;
import android.content.Intent;
import android.os.Bundle;

public class FileSelect extends Activity {
	public static final String RESULT_DATA = "RESULT_PATH";
	public static final String START_DATA = "START_DATA";
	public static final String NO_INLINE_SELECTION = "de.blinkt.openvpn.NO_INLINE_SELECTION";
	private FileSelectionFragment mFSFragment;
	private InlineFileTab mInlineFragment;
	private String mData;
	private Tab inlineFileTab;
	private Tab fileExplorerTab;
	private boolean mNoInline;

	public void onCreate(Bundle savedInstanceState)
	{
		super.onCreate(savedInstanceState); 
		setContentView(R.layout.file_dialog);

		mData = getIntent().getStringExtra(START_DATA);
		if(mData==null)
			mData="/sdcard";
		
		mNoInline = getIntent().getBooleanExtra(NO_INLINE_SELECTION, false);
		
		ActionBar bar = getActionBar();
		bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); 
		fileExplorerTab = bar.newTab().setText(R.string.file_explorer_tab);
		inlineFileTab = bar.newTab().setText(R.string.inline_file_tab); 

		mFSFragment = new FileSelectionFragment();
		mFSFragment.setNoInLine();
		fileExplorerTab.setTabListener(new MyTabsListener<FileSelectionFragment>(this, mFSFragment));
		bar.addTab(fileExplorerTab);
		
		if(!mNoInline) {
			mInlineFragment = new InlineFileTab();
			inlineFileTab.setTabListener(new MyTabsListener<InlineFileTab>(this, mInlineFragment));
			bar.addTab(inlineFileTab);
			}

		
	}

	protected class MyTabsListener<T extends Fragment> implements ActionBar.TabListener
	{
		private Fragment mFragment;
		private boolean mAdded=false;

		public MyTabsListener( Activity activity, Fragment fragment){
			this.mFragment = fragment;
		}

		public void onTabSelected(Tab tab, FragmentTransaction ft) {
			// Check if the fragment is already initialized
			if (!mAdded) {
				// If not, instantiate and add it to the activity
				ft.add(android.R.id.content, mFragment);
				mAdded =true;
			} else {
				// If it exists, simply attach it in order to show it
				ft.attach(mFragment);
			}
		}	        

		@Override
		public void onTabUnselected(Tab tab, FragmentTransaction ft) {
			ft.detach(mFragment);
		}

		@Override
		public void onTabReselected(Tab tab, FragmentTransaction ft) {

		}
	}
	
	public void importFile(String path) {
		File ifile = new File(path);
		Exception fe = null;
		try {
			FileInputStream fis = new FileInputStream(ifile);
			String data =VpnProfile.INLINE_TAG;

			byte buf[] =new byte[16384];
			int len=fis.read(buf);
			while(len >0) {
				data += new String(buf,0,len);
				len=fis.read(buf);
			}
			
			mData =data;
			mInlineFragment.setData(data);
			getActionBar().selectTab(inlineFileTab);
		} catch (FileNotFoundException e) {
			fe = e;
		} catch (IOException e) {
			fe =e;
		}
		if(fe!=null) {
			Builder ab = new AlertDialog.Builder(this);
			ab.setTitle(R.string.error_importing_file);
			ab.setMessage(getString(R.string.import_error_message) + "\n" + fe.getLocalizedMessage());
			ab.setPositiveButton(android.R.string.ok, null);
			ab.show();
		}
	}

	public void setFile(String path) {
		Intent intent = new Intent();
		intent.putExtra(RESULT_DATA, path);
		setResult(Activity.RESULT_OK,intent);
		finish();		
	}

	public String getSelectPath() {
		if(mData.startsWith(VpnProfile.INLINE_TAG))
			return mData;
		else
			return "/mnt/sdcard";
	}

	public CharSequence getInlineData() {
		if(mData.startsWith(VpnProfile.INLINE_TAG))
			return mData.substring(VpnProfile.INLINE_TAG.length());
		else
			return "";
	}

	public void saveInlineData(String string) {
		Intent intent = new Intent();
		intent.putExtra(RESULT_DATA, mData);
		setResult(Activity.RESULT_OK,intent);
		finish();
		
	}
}