/*
 * This file is part of Popcorn Time.
 *
 * Popcorn Time is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Popcorn Time 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Popcorn Time. If not, see <http://www.gnu.org/licenses/>.
 */

package pct.droid.tv.fragments;

import android.annotation.TargetApi;
import android.graphics.Bitmap;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.os.Bundle;
import android.support.v17.leanback.app.DetailsFragment;
import android.support.v17.leanback.widget.AbstractDetailsDescriptionPresenter;
import android.support.v17.leanback.widget.Action;
import android.support.v17.leanback.widget.ArrayObjectAdapter;
import android.support.v17.leanback.widget.ClassPresenterSelector;
import android.support.v17.leanback.widget.DetailsOverviewRow;
import android.support.v17.leanback.widget.ListRow;
import android.support.v17.leanback.widget.ListRowPresenter;
import android.support.v17.leanback.widget.OnActionClickedListener;
import android.support.v17.leanback.widget.PTVDetailsOverviewRowPresenter;
import android.support.v17.leanback.widget.PresenterSelector;

import com.squareup.picasso.Picasso;
import com.squareup.picasso.Target;

import java.util.ArrayList;

import pct.droid.base.providers.media.MediaProvider;
import pct.droid.base.providers.media.models.Media;
import pct.droid.base.utils.ThreadUtils;
import pct.droid.base.utils.VersionUtils;
import pct.droid.tv.activities.PTVMediaDetailActivity;

public abstract class PTVBaseDetailsFragment extends DetailsFragment
		implements MediaProvider.Callback,
		OnActionClickedListener {

	public static final String EXTRA_ITEM = "item";
	public static final String EXTRA_HERO_URL = "hero_url";

	private ArrayObjectAdapter mAdapter;
	private ClassPresenterSelector mPresenterSelector;
	private Media mItem;
	private String mHeroImage;

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

		mItem = getArguments().getParcelable(EXTRA_ITEM);
		mHeroImage = mItem.image;

		setupAdapter();
		setupDetailsOverviewRowPresenter();

		final DetailsOverviewRow detailRow = createDetailsOverviewRow();
		mAdapter.add(detailRow);

		loadDetails();
	}

	abstract void loadDetails();

	abstract AbstractDetailsDescriptionPresenter getDetailPresenter();

	abstract void onDetailLoaded();

	protected ArrayObjectAdapter getObjectArrayAdapter() {
		return mAdapter;
	}

	public Media getMediaItem() {
		return mItem;
	}

	@Override
	public void onDestroy() {
		super.onDestroy();
	}

	private void setupAdapter() {
		mPresenterSelector = new ClassPresenterSelector();
		createPresenters(mPresenterSelector);

		mAdapter = createAdapter(mPresenterSelector);
		setAdapter(mAdapter);
	}

	abstract ClassPresenterSelector createPresenters(ClassPresenterSelector selector);

	protected ArrayObjectAdapter createAdapter(PresenterSelector selector) {
		return new ArrayObjectAdapter(selector);
	}

	private void setupDetailsOverviewRowPresenter() {
		// Set detail background and style.
		PTVDetailsOverviewRowPresenter headerPresenter = new PTVDetailsOverviewRowPresenter(getDetailPresenter());
        headerPresenter.setBackgroundColor(mItem.color);
		headerPresenter.setStyleLarge(true);
		headerPresenter.setOnActionClickedListener(this);

		// Hook up transition element.
		headerPresenter.setSharedElementEnterTransition(
			getActivity(),
			PTVMediaDetailActivity.SHARED_ELEMENT_NAME);

		mPresenterSelector.addClassPresenter(DetailsOverviewRow.class, headerPresenter);
		mPresenterSelector.addClassPresenter(ListRow.class, new ListRowPresenter());
	}

	private DetailsOverviewRow createDetailsOverviewRow() {
		final DetailsOverviewRow detailsRow = new DetailsOverviewRow(mItem);

		Picasso.with(getActivity()).load(mHeroImage).into(new Target() {
			@Override
			public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
				detailsRow.setImageBitmap(getActivity(), bitmap);
				mAdapter.notifyArrayItemRangeChanged(0, mAdapter.size());

			}

			@TargetApi(Build.VERSION_CODES.LOLLIPOP)
			@Override
			public void onBitmapFailed(Drawable errorDrawable) {
				if(VersionUtils.isLollipop())
					getActivity().startPostponedEnterTransition();
			}

			@Override
			public void onPrepareLoad(Drawable placeHolderDrawable) {

			}
		});
		return detailsRow;
	}

	protected void addAction(Action action) {
		DetailsOverviewRow detailRow = (DetailsOverviewRow) mAdapter.get(0);
		detailRow.addAction(action);
	}

	abstract void addActions(Media item);

	@Override
	public void onSuccess(MediaProvider.Filters filters, ArrayList<Media> items, boolean changed) {
		if (!isAdded()) return;

		if (null == items || items.size() == 0) return;

		Media itemDetail = items.get(0);

		mItem = itemDetail;

		ThreadUtils.runOnUiThread(new Runnable() {
			@Override public void run() {
				final DetailsOverviewRow detailRow = createDetailsOverviewRow();
				mAdapter.replace(0, detailRow);
				onDetailLoaded();
			}
		});
	}

	@Override
	public void onFailure(Exception e) {
		//todo: on load failure
	}

	public interface Callback { }
}