/*
 * Copyright (C) 2019 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.tuner.tvinput;

import android.content.Context;
import android.net.Uri;
import androidx.annotation.MainThread;
import androidx.annotation.Nullable;
import androidx.annotation.WorkerThread;
import android.util.Log;

import com.android.tv.common.compat.RecordingSessionCompat;
import com.android.tv.common.dagger.annotations.ApplicationContext;
import com.android.tv.tuner.tvinput.datamanager.ChannelDataManager;
import com.android.tv.tuner.tvinput.factory.TunerRecordingSessionFactory;
import com.android.tv.tuner.tvinput.factory.TunerRecordingSessionFactory.RecordingSessionReleasedCallback;

import com.google.auto.factory.AutoFactory;
import com.google.auto.factory.Provided;

/** Processes DVR recordings, and deletes the previously recorded contents. */
@AutoFactory(
        className = "TunerRecordingSessionExoV2FactoryImpl",
        implementing = TunerRecordingSessionFactory.class)
public class TunerRecordingSessionExoV2 extends RecordingSessionCompat {
    private static final String TAG = "TunerRecordingSessionExoV2";
    private static final boolean DEBUG = false;

    private final TunerRecordingSessionWorkerExoV2 mSessionWorker;
    private final RecordingSessionReleasedCallback mReleasedCallback;
    private Uri mChannelUri;
    private Uri mRecordingUri;

    public TunerRecordingSessionExoV2(
            @Provided @ApplicationContext Context context,
            String inputId,
            RecordingSessionReleasedCallback releasedCallback,
            ChannelDataManager channelDataManager,
            @Provided TunerRecordingSessionWorkerExoV2.Factory tunerRecordingSessionWorkerFactory) {
        super(context);
        mReleasedCallback = releasedCallback;
        mSessionWorker =
                tunerRecordingSessionWorkerFactory.create(
                        context, inputId, channelDataManager, this);
    }

    // RecordingSession
    @MainThread
    @Override
    public void onTune(Uri channelUri) {
        // TODO(dvr): support calling more than once, http://b/27171225
        if (DEBUG) {
            Log.d(TAG, "Requesting recording session tune: " + channelUri);
        }
        mSessionWorker.tune(channelUri);
    }

    @MainThread
    @Override
    public void onRelease() {
        if (DEBUG) {
            Log.d(TAG, "Requesting recording session release.");
        }
        mSessionWorker.release();
        mReleasedCallback.onReleased(this);
    }

    @MainThread
    @Override
    public void onStartRecording(@Nullable Uri programUri) {
        if (DEBUG) {
            Log.d(TAG, "Requesting start recording.");
        }
        mSessionWorker.startRecording(programUri);
    }

    @MainThread
    @Override
    public void onStopRecording() {
        if (DEBUG) {
            Log.d(TAG, "Requesting stop recording.");
        }
        mSessionWorker.stopRecording();
    }

    // Called from TunerRecordingSessionImpl in a worker thread.
    @WorkerThread
    public void onTuned(Uri channelUri) {
        if (DEBUG) {
            Log.d(TAG, "Notifying recording session tuned.");
        }
        mChannelUri = channelUri;
        notifyTuned(channelUri);
    }

    // Called from TunerRecordingSessionImpl in a worker thread.
    @WorkerThread
    public void onRecordingUri(String recUri) {
        if (DEBUG) {
            Log.d(TAG, "Notifying recording session URI." + recUri);
        }
        notifyRecordingStarted(recUri);
    }

    @WorkerThread
    public void onRecordFinished(final Uri recordedProgramUri) {
        if (DEBUG) {
            Log.d(TAG, "Notifying record successfully finished.");
        }
        mRecordingUri = null;
        notifyRecordingStopped(recordedProgramUri);
    }

    @WorkerThread
    public void onError(int reason) {
        Log.w(TAG, "Notifying recording error: " + reason);
        notifyError(reason);
    }

    public void onRecordingStatePartial(Uri recUri) {
        if (DEBUG) {
            Log.d(TAG, "Updating recording session state to Partial");
        }
        mRecordingUri = recUri;
    }

    public Uri getChannelUri() {
        return mChannelUri;
    }

    public Uri getRecordingUri() {
        return mRecordingUri;
    }
}