/*
 * Copyright (C) 2016 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.dvr.ui.browse;

import android.content.Context;
import android.os.Handler;
import com.android.tv.R;
import com.android.tv.TvSingletons;
import com.android.tv.dvr.DvrManager;
import com.android.tv.dvr.data.ScheduledRecording;
import com.android.tv.util.Utils;
import java.util.concurrent.TimeUnit;

/** Presents a {@link ScheduledRecording} in the {@link DvrBrowseFragment}. */
class ScheduledRecordingPresenter extends DvrItemPresenter<ScheduledRecording> {
    private static final long PROGRESS_UPDATE_INTERVAL_MS = TimeUnit.SECONDS.toMillis(5);

    private final DvrManager mDvrManager;
    private final int mProgressBarColor;

    private final class ScheduledRecordingViewHolder extends DvrItemViewHolder {
        private final Handler mHandler = new Handler();
        private ScheduledRecording mScheduledRecording;
        private final Runnable mProgressBarUpdater =
                new Runnable() {
                    @Override
                    public void run() {
                        updateProgressBar();
                        mHandler.postDelayed(this, PROGRESS_UPDATE_INTERVAL_MS);
                    }
                };

        ScheduledRecordingViewHolder(RecordingCardView view, int progressBarColor) {
            super(view);
            view.setProgressBarColor(progressBarColor);
        }

        @Override
        protected void onBound(ScheduledRecording recording) {
            mScheduledRecording = recording;
            updateProgressBar();
            startUpdateProgressBar();
        }

        @Override
        protected void onUnbound() {
            stopUpdateProgressBar();
            mScheduledRecording = null;
            getView().reset();
        }

        private void updateProgressBar() {
            if (mScheduledRecording == null) {
                return;
            }
            int recordingState = mScheduledRecording.getState();
            RecordingCardView cardView = (RecordingCardView) view;
            if (recordingState == ScheduledRecording.STATE_RECORDING_IN_PROGRESS) {
                cardView.setProgressBar(
                        Math.max(
                                0,
                                Math.min(
                                        (int)
                                                (100
                                                        * (System.currentTimeMillis()
                                                                - mScheduledRecording
                                                                        .getStartTimeMs())
                                                        / mScheduledRecording.getDuration()),
                                        100)));
            } else if (recordingState == ScheduledRecording.STATE_RECORDING_FINISHED) {
                cardView.setProgressBar(100);
            } else {
                // Hides progress bar.
                cardView.setProgressBar(null);
            }
        }

        private void startUpdateProgressBar() {
            mHandler.post(mProgressBarUpdater);
        }

        private void stopUpdateProgressBar() {
            mHandler.removeCallbacks(mProgressBarUpdater);
        }
    }

    public ScheduledRecordingPresenter(Context context) {
        super(context);
        mDvrManager = TvSingletons.getSingletons(mContext).getDvrManager();
        mProgressBarColor =
                mContext.getResources()
                        .getColor(R.color.play_controls_recording_icon_color_on_focus);
    }

    @Override
    public DvrItemViewHolder onCreateDvrItemViewHolder() {
        return new ScheduledRecordingViewHolder(new RecordingCardView(mContext), mProgressBarColor);
    }

    @Override
    public void onBindDvrItemViewHolder(
            DvrItemViewHolder baseHolder, ScheduledRecording recording) {
        final ScheduledRecordingViewHolder viewHolder = (ScheduledRecordingViewHolder) baseHolder;
        final RecordingCardView cardView = viewHolder.getView();
        DetailsContent details = DetailsContent.createFromScheduledRecording(mContext, recording);
        cardView.setTitle(details.getTitle());
        cardView.setImageUri(details.getLogoImageUri(), details.isUsingChannelLogo());
        if (recording.getState() == ScheduledRecording.STATE_RECORDING_FAILED) {
            cardView.setRecordingFailedContent(mContext);
        } else if (mDvrManager.isConflicting(recording)) {
            cardView.setRecordingConflictContent(mContext);
        } else {
            cardView.setContent(generateMajorContent(recording), null);
        }
        cardView.setDetailBackgroundImageUri(details.getBackgroundImageUri());
    }

    private String generateMajorContent(ScheduledRecording recording) {
        int dateDifference =
                Utils.computeDateDifference(System.currentTimeMillis(), recording.getStartTimeMs());
        if (dateDifference <= 0) {
            return mContext.getString(
                    R.string.dvr_date_today_time,
                    Utils.getDurationString(
                            mContext,
                            recording.getStartTimeMs(),
                            recording.getEndTimeMs(),
                            false,
                            false,
                            true,
                            0));
        } else if (dateDifference == 1) {
            return mContext.getString(
                    R.string.dvr_date_tomorrow_time,
                    Utils.getDurationString(
                            mContext,
                            recording.getStartTimeMs(),
                            recording.getEndTimeMs(),
                            false,
                            false,
                            true,
                            0));
        } else {
            return Utils.getDurationString(
                    mContext,
                    recording.getStartTimeMs(),
                    recording.getStartTimeMs(),
                    false,
                    true,
                    false,
                    0);
        }
    }
}