package fishrungames.bashgid;

import android.support.v7.app.ActionBarActivity;

import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.res.Configuration;
import android.graphics.Typeface;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

/**
 * Fragment used for managing interactions for and presentation of a navigation
 * drawer. See the <a href=
 * "https://developer.android.com/design/patterns/navigation-drawer.html#Interaction"
 * > design guidelines</a> for a complete explanation of the behaviors
 * implemented here.
 */
public class NavigationDrawerFragment extends Fragment
{

	/**
	 * Remember the position of the selected item.
	 */
	private static final String STATE_SELECTED_POSITION = "selected_navigation_drawer_position";

	/**
	 * Per the design guidelines, you should show the drawer on launch until the
	 * user manually expands it. This shared preference tracks this.
	 */
	private static final String PREF_USER_LEARNED_DRAWER = "navigation_drawer_learned";

	/**
	 * A pointer to the current callbacks instance (the Activity).
	 */
	private NavigationDrawerCallbacks mCallbacks;

	/**
	 * Helper component that ties the action bar to the navigation drawer.
	 */
	private ActionBarDrawerToggle mDrawerToggle;

	private DrawerLayout mDrawerLayout;
	private ListView mDrawerListView;
	private View mFragmentContainerView;

	private int mCurrentSelectedPosition = 0;
	private boolean mFromSavedInstanceState;
	private boolean mUserLearnedDrawer;

	private DrawerAdapter drawerAdapter;

	public NavigationDrawerFragment()
	{
	}

	@Override
	public void onCreate(Bundle savedInstanceState)
	{
		super.onCreate(savedInstanceState);

		// Read in the flag indicating whether or not the user has demonstrated
		// awareness of the
		// drawer. See PREF_USER_LEARNED_DRAWER for details.
		// SharedPreferences sp =
		// PreferenceManager.getDefaultSharedPreferences(getActivity());

		// Don't need this shit
		// mUserLearnedDrawer = sp.getBoolean(PREF_USER_LEARNED_DRAWER, false);
		mUserLearnedDrawer = true;

		if (savedInstanceState != null)
		{
			mCurrentSelectedPosition = savedInstanceState.getInt(STATE_SELECTED_POSITION);
			mFromSavedInstanceState = true;
		}

		// Select either the default item (0) or the last selected item.
		selectItem(mCurrentSelectedPosition);

	}

	@Override
	public void onActivityCreated(Bundle savedInstanceState)
	{
		super.onActivityCreated(savedInstanceState);
		// Indicate that this fragment would like to influence the set of
		// actions in the action bar.
		setHasOptionsMenu(true);
	}

	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
	{
		mDrawerListView = (ListView) inflater.inflate(R.layout.fragment_navigation_drawer, container, false);
		mDrawerListView.setOnItemClickListener(new AdapterView.OnItemClickListener()
		{
			@Override
			public void onItemClick(AdapterView<?> parent, View view, int position, long id)
			{
				selectItem(position);
			}
		});

		drawerAdapter = new DrawerAdapter(getActivity());

		mDrawerListView.setAdapter(drawerAdapter);

		mDrawerListView.setItemChecked(mCurrentSelectedPosition, true);
		return mDrawerListView;
	}

	public boolean isDrawerOpen()
	{
		return mDrawerLayout != null && mDrawerLayout.isDrawerOpen(mFragmentContainerView);
	}

	public void EnableDrawer()
	{
		mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED);
	}

	/**
	 * Users of this fragment must call this method to set up the navigation
	 * drawer interactions.
	 * 
	 * @param fragmentId
	 *            The android:id of this fragment in its activity's layout.
	 * @param drawerLayout
	 *            The DrawerLayout containing this fragment's UI.
	 */
	public void setUp(int fragmentId, DrawerLayout drawerLayout)
	{
		mFragmentContainerView = getActivity().findViewById(fragmentId);
		mDrawerLayout = drawerLayout;

		// set a custom shadow that overlays the main content when the drawer
		// opens
		mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
		// set up the drawer's list view with items and click listener

		ActionBar actionBar = getActionBar();
		actionBar.setDisplayHomeAsUpEnabled(true);
		actionBar.setHomeButtonEnabled(true);

		// ActionBarDrawerToggle ties together the the proper interactions
		// between the navigation drawer and the action bar app icon.

		mDrawerToggle = new ActionBarDrawerToggle(getActivity(), /* host Activity */
		mDrawerLayout, /* DrawerLayout object */
		R.string.navigation_drawer_open, /*
										 * "open drawer" description for
										 * accessibility
										 */
		R.string.navigation_drawer_close /*
										 * "close drawer" description for
										 * accessibility
										 */
		)
		{
			@Override
			public void onDrawerClosed(View drawerView)
			{
				super.onDrawerClosed(drawerView);
				if (!isAdded())
				{
					return;
				}

				// getActivity().supportInvalidateOptionsMenu(); // calls
				// onPrepareOptionsMenu()
			}

			@Override
			public void onDrawerOpened(View drawerView)
			{
				super.onDrawerOpened(drawerView);
				if (!isAdded())
				{
					return;
				}

				if (!mUserLearnedDrawer)
				{
					// The user manually opened the drawer; store this flag to
					// prevent auto-showing
					// the navigation drawer automatically in the future.
					mUserLearnedDrawer = true;
					SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(getActivity());
					sp.edit().putBoolean(PREF_USER_LEARNED_DRAWER, true).commit();
				}

				// getActivity().supportInvalidateOptionsMenu(); // calls
				// onPrepareOptionsMenu()
			}
		};

		// If the user hasn't 'learned' about the drawer, open it to introduce
		// them to the drawer,
		// per the navigation drawer design guidelines.
		if (!mUserLearnedDrawer && !mFromSavedInstanceState)
		{
			mDrawerLayout.openDrawer(mFragmentContainerView);
		}

		// Defer code dependent on restoration of previous instance state.
		mDrawerLayout.post(new Runnable()
		{
			@Override
			public void run()
			{
				mDrawerToggle.syncState();
			}
		});

		mDrawerLayout.setDrawerListener(mDrawerToggle);

		mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);

		drawerAdapter.notifyDataSetChanged();

	}

	private void selectItem(int position)
	{
		mCurrentSelectedPosition = position;
		if (mDrawerListView != null)
		{
			mDrawerListView.setItemChecked(position, true);
		}
		if (mDrawerLayout != null)
		{
			mDrawerLayout.closeDrawer(mFragmentContainerView);
		}
		if (mCallbacks != null)
		{
			mCallbacks.onNavigationDrawerItemSelected(position);
		}
	}

	@Override
	public void onAttach(Activity activity)
	{
		super.onAttach(activity);
		try
		{
			mCallbacks = (NavigationDrawerCallbacks) activity;
		} catch (ClassCastException e)
		{
			throw new ClassCastException("Activity must implement NavigationDrawerCallbacks.");
		}
	}

	@Override
	public void onDetach()
	{
		super.onDetach();
		mCallbacks = null;
	}

	@Override
	public void onSaveInstanceState(Bundle outState)
	{
		super.onSaveInstanceState(outState);
		outState.putInt(STATE_SELECTED_POSITION, mCurrentSelectedPosition);
	}

	@Override
	public void onConfigurationChanged(Configuration newConfig)
	{
		super.onConfigurationChanged(newConfig);
		// Forward the new configuration the drawer toggle component.
		mDrawerToggle.onConfigurationChanged(newConfig);
	}

	@Override
	public void onCreateOptionsMenu(Menu menu, MenuInflater inflater)
	{
		// If the drawer is open, show the global app actions in the action bar.
		// See also
		// showGlobalContextActionBar, which controls the top-left area of the
		// action bar.

		showGlobalContextActionBar();

		super.onCreateOptionsMenu(menu, inflater);

	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item)
	{

		// Xperimental -- check if we need options or not
		if (mDrawerToggle.onOptionsItemSelected(item))
		{
			return true;
		}

		if (item.getItemId() == R.id.action_search)
		{

			return true;
		}

		return super.onOptionsItemSelected(item);
	}

	/**
	 * Per the navigation drawer design guidelines, updates the action bar to
	 * show the global app 'context', rather than just what's in the current
	 * screen.
	 */
	private void showGlobalContextActionBar()
	{
		ActionBar actionBar = getActionBar();
		actionBar.setDisplayShowTitleEnabled(true);
		// actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
		actionBar.setTitle(R.string.app_name);
	}

	private ActionBar getActionBar()
	{
		return ((ActionBarActivity) getActivity()).getSupportActionBar();
	}

	/**
	 * Callbacks interface that all activities using this fragment must
	 * implement.
	 */
	public static interface NavigationDrawerCallbacks
	{
		/**
		 * Called when an item in the navigation drawer is selected.
		 */
		void onNavigationDrawerItemSelected(int position);
	}

	public class DrawerAdapter extends BaseAdapter
	{
		private Context mContext;

		final int[] titles = { R.string.drawer_header, R.string.drawer_guide, R.string.drawer_news, R.string.drawer_catalogue, R.string.drawer_map,
				R.string.drawer_video, R.string.drawer_photo_gallery, R.string.drawer_for_investor, R.string.drawer_settings };

		final int[] iconIds = { R.drawable.drawer_bashgid_logo, R.drawable.drawer_agenda, R.drawable.drawer_news, R.drawable.drawer_bookmark,
				R.drawable.drawer_pushpin, R.drawable.drawer_tv, R.drawable.drawer_photography, R.drawable.drawer_id, R.drawable.drawer_gear };

		public DrawerAdapter(Context c)
		{
			mContext = c;
		}

		public int getCount()
		{
			return titles.length;
		}

		public Object getItem(int position)
		{
			return null;
		}

		public long getItemId(int position)
		{
			return 0;
		}

		// create a new ImageView for each item referenced by the Adapter
		public View getView(int position, View convertView, ViewGroup parent)
		{

			View view;
			if (convertView == null)
			{ // if it's not recycled, initialize some attributes
				LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
				view = inflater.inflate(R.layout.drawer_list_element, null);

			} else
			{
				view = convertView;
			}

			TextView textView = (TextView) view.findViewById(R.id.dateTextView);

			textView.setText(titles[position]);

			ImageView imageView = (ImageView) view.findViewById(R.id.imageView);

			imageView.setImageResource(iconIds[position]);

			int drawerImageSize = (int) mContext.getResources().getDimension(R.dimen.drawer_image_size);

			if (position == 0)
			{
				LayoutParams params = imageView.getLayoutParams();
				params.width = drawerImageSize * 2;
				params.height = drawerImageSize * 2;
				imageView.setLayoutParams(params);

				textView.setTypeface(null, Typeface.BOLD);
			} else
			{
				LayoutParams params = imageView.getLayoutParams();
				params.width = drawerImageSize;
				params.height = drawerImageSize;
				imageView.setLayoutParams(params);

				textView.setTypeface(null, Typeface.NORMAL);
			}

			return view;
		}
	}
}
