/*
 * Copyright (C) 2015 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.tv.ui.sidepanel.parentalcontrols;

import android.graphics.drawable.Drawable;
import android.view.View;
import android.widget.CompoundButton;
import android.widget.ImageView;

import com.android.tv.R;
import com.android.tv.parental.ContentRatingSystem;
import com.android.tv.parental.ContentRatingSystem.Rating;
import com.android.tv.parental.ContentRatingSystem.SubRating;
import com.android.tv.ui.sidepanel.CheckBoxItem;
import com.android.tv.ui.sidepanel.DividerItem;
import com.android.tv.ui.sidepanel.Item;
import com.android.tv.ui.sidepanel.SideFragment;

import java.util.ArrayList;
import java.util.List;

public class SubRatingsFragment extends SideFragment {
    private static final String TRACKER_LABEL = "Sub ratings";

    private final ContentRatingSystem mContentRatingSystem;
    private final Rating mRating;
    private final List<SubRatingItem> mSubRatingItems = new ArrayList<>();

    public SubRatingsFragment(ContentRatingSystem contentRatingSystem, Rating rating) {
        mContentRatingSystem = contentRatingSystem;
        mRating = rating;
    }

    @Override
    protected String getTitle() {
        return getString(R.string.option_subrating_title, mRating.getTitle());
    }

    @Override
    public String getTrackerLabel() {
        return TRACKER_LABEL;
    }

    @Override
    protected List<Item> getItemList() {
        List<Item> items = new ArrayList<>();
        items.add(new RatingItem());
        items.add(new DividerItem(getString(R.string.option_subrating_header)));
        mSubRatingItems.clear();
        for (SubRating subRating : mRating.getSubRatings()) {
            mSubRatingItems.add(new SubRatingItem(subRating));
        }
        items.addAll(mSubRatingItems);
        return items;
    }

    private class RatingItem extends CheckBoxItem {
        private RatingItem() {
            super(mRating.getTitle(), mRating.getDescription());
        }

        @Override
        protected void onBind(View view) {
            super.onBind(view);

            CompoundButton button = (CompoundButton) view.findViewById(getCompoundButtonId());
            button.setButtonDrawable(R.drawable.btn_lock_material_anim);
            button.setVisibility(View.VISIBLE);

            Drawable icon = mRating.getIcon();
            ImageView imageView = (ImageView) view.findViewById(R.id.icon);
            if (icon != null) {
                imageView.setVisibility(View.VISIBLE);
                imageView.setImageDrawable(icon);
            } else {
                imageView.setVisibility(View.GONE);
            }
        }

        @Override
        protected void onUpdate() {
            super.onUpdate();
            setChecked(isRatingEnabled());
        }

        @Override
        protected void onSelected() {
            super.onSelected();
            boolean checked = isChecked();
            setRatingEnabled(checked);
            if (checked) {
                // If the rating is checked, check and disable all the sub rating items.
                for (SubRating subRating : mRating.getSubRatings()) {
                    setSubRatingEnabled(subRating, true);
                }
                for (SubRatingItem item : mSubRatingItems) {
                    item.setChecked(true);
                    item.setEnabled(false);
                }
            } else {
                // If the rating is unchecked, just enable all the sub rating items and do not
                // change the check state.
                for (SubRatingItem item : mSubRatingItems) {
                    item.setEnabled(true);
                }
            }
        }

        @Override
        protected int getResourceId() {
            return R.layout.option_item_rating;
        }
    }

    private class SubRatingItem extends CheckBoxItem {
        private final SubRating mSubRating;

        private SubRatingItem(SubRating subRating) {
            super(subRating.getTitle(), subRating.getDescription());
            mSubRating = subRating;
        }

        @Override
        protected void onBind(View view) {
            super.onBind(view);

            CompoundButton button = (CompoundButton) view.findViewById(getCompoundButtonId());
            button.setButtonDrawable(R.drawable.btn_lock_material_anim);
            button.setVisibility(View.VISIBLE);

            Drawable icon = mSubRating.getIcon();
            ImageView imageView = (ImageView) view.findViewById(R.id.icon);
            if (icon != null) {
                imageView.setVisibility(View.VISIBLE);
                imageView.setImageDrawable(icon);
            } else {
                imageView.setVisibility(View.GONE);
            }
        }

        @Override
        protected void onUpdate() {
            super.onUpdate();
            setChecked(isSubRatingEnabled(mSubRating));
            setEnabled(!isRatingEnabled());
        }

        @Override
        protected void onSelected() {
            super.onSelected();
            setSubRatingEnabled(mSubRating, isChecked());
        }

        @Override
        protected int getResourceId() {
            return R.layout.option_item_rating;
        }
    }

    private boolean isRatingEnabled() {
        return getMainActivity().getParentalControlSettings()
                .isRatingBlocked(mContentRatingSystem, mRating);
    }

    private boolean isSubRatingEnabled(SubRating subRating) {
        return getMainActivity().getParentalControlSettings()
                .isSubRatingEnabled(mContentRatingSystem, mRating, subRating);
    }

    private void setRatingEnabled(boolean enabled) {
        getMainActivity().getParentalControlSettings()
                .setRatingBlocked(mContentRatingSystem, mRating, enabled);
    }

    private void setSubRatingEnabled(SubRating subRating, boolean enabled) {
        getMainActivity().getParentalControlSettings()
                .setSubRatingBlocked(mContentRatingSystem, mRating, subRating, enabled);
    }
}