/*
*  This file is part of openauto project.
*  Copyright (C) 2018 f1x.studio (Michal Szwaj)
*
*  openauto 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.

*  openauto 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 openauto. If not, see <http://www.gnu.org/licenses/>.
*/

#include <f1x/openauto/Common/Log.hpp>
#include <f1x/openauto/autoapp/Service/AudioService.hpp>

namespace f1x
{
namespace openauto
{
namespace autoapp
{
namespace service
{

AudioService::AudioService(boost::asio::io_service& ioService, aasdk::channel::av::IAudioServiceChannel::Pointer channel, projection::IAudioOutput::Pointer audioOutput)
    : strand_(ioService)
    , channel_(std::move(channel))
    , audioOutput_(std::move(audioOutput))
    , session_(-1)
{

}

void AudioService::start()
{
    strand_.dispatch([this, self = this->shared_from_this()]() {
        OPENAUTO_LOG(info) << "[AudioService] start, channel: " << aasdk::messenger::channelIdToString(channel_->getId());
        channel_->receive(this->shared_from_this());
    });
}

void AudioService::stop()
{
    strand_.dispatch([this, self = this->shared_from_this()]() {
        OPENAUTO_LOG(info) << "[AudioService] stop, channel: " << aasdk::messenger::channelIdToString(channel_->getId());
        audioOutput_->stop();
    });
}

void AudioService::fillFeatures(aasdk::proto::messages::ServiceDiscoveryResponse& response)
{
    OPENAUTO_LOG(info) << "[AudioService] fill features, channel: " << aasdk::messenger::channelIdToString(channel_->getId());

    auto* channelDescriptor = response.add_channels();
    channelDescriptor->set_channel_id(static_cast<uint32_t>(channel_->getId()));

    auto* audioChannel = channelDescriptor->mutable_av_channel();
    audioChannel->set_stream_type(aasdk::proto::enums::AVStreamType::AUDIO);

    switch(channel_->getId())
    {
    case aasdk::messenger::ChannelId::SYSTEM_AUDIO:
        audioChannel->set_audio_type(aasdk::proto::enums::AudioType::SYSTEM);
        break;

    case aasdk::messenger::ChannelId::MEDIA_AUDIO:
        audioChannel->set_audio_type(aasdk::proto::enums::AudioType::MEDIA);
        break;

    case aasdk::messenger::ChannelId::SPEECH_AUDIO:
        audioChannel->set_audio_type(aasdk::proto::enums::AudioType::SPEECH);
        break;
    default:
        break;
    }

    audioChannel->set_available_while_in_call(true);

    auto* audioConfig = audioChannel->add_audio_configs();
    audioConfig->set_sample_rate(audioOutput_->getSampleRate());
    audioConfig->set_bit_depth(audioOutput_->getSampleSize());
    audioConfig->set_channel_count(audioOutput_->getChannelCount());
}

void AudioService::onChannelOpenRequest(const aasdk::proto::messages::ChannelOpenRequest& request)
{
    OPENAUTO_LOG(info) << "[AudioService] open request"
                       << ", channel: " << aasdk::messenger::channelIdToString(channel_->getId())
                       << ", priority: " << request.priority();

    OPENAUTO_LOG(debug) << "[AudioService] channel: " << aasdk::messenger::channelIdToString(channel_->getId())
                        << " audio output sample rate: " << audioOutput_->getSampleRate()
                        << ", sample size: " << audioOutput_->getSampleSize()
                        << ", channel count: " << audioOutput_->getChannelCount();

    const aasdk::proto::enums::Status::Enum status = audioOutput_->open() ? aasdk::proto::enums::Status::OK : aasdk::proto::enums::Status::FAIL;
    OPENAUTO_LOG(info) << "[AudioService] open status: " << status
                       << ", channel: " << aasdk::messenger::channelIdToString(channel_->getId());

    aasdk::proto::messages::ChannelOpenResponse response;
    response.set_status(status);

    auto promise = aasdk::channel::SendPromise::defer(strand_);
    promise->then([]() {}, std::bind(&AudioService::onChannelError, this->shared_from_this(), std::placeholders::_1));
    channel_->sendChannelOpenResponse(response, std::move(promise));
    channel_->receive(this->shared_from_this());
}

void AudioService::onAVChannelSetupRequest(const aasdk::proto::messages::AVChannelSetupRequest& request)
{
    OPENAUTO_LOG(info) << "[AudioService] setup request"
                       << ", channel: " << aasdk::messenger::channelIdToString(channel_->getId())
                       << ", config index: " << request.config_index();
    const aasdk::proto::enums::AVChannelSetupStatus::Enum status = aasdk::proto::enums::AVChannelSetupStatus::OK;
    OPENAUTO_LOG(info) << "[AudioService] setup status: " << status
                       << ", channel: " << aasdk::messenger::channelIdToString(channel_->getId());

    aasdk::proto::messages::AVChannelSetupResponse response;
    response.set_media_status(status);
    response.set_max_unacked(1);
    response.add_configs(0);

    auto promise = aasdk::channel::SendPromise::defer(strand_);
    promise->then([]() {}, std::bind(&AudioService::onChannelError, this->shared_from_this(), std::placeholders::_1));
    channel_->sendAVChannelSetupResponse(response, std::move(promise));
    channel_->receive(this->shared_from_this());
}

void AudioService::onAVChannelStartIndication(const aasdk::proto::messages::AVChannelStartIndication& indication)
{
    OPENAUTO_LOG(info) << "[AudioService] start indication"
                       << ", channel: " << aasdk::messenger::channelIdToString(channel_->getId())
                       << ", session: " << indication.session();
    session_ = indication.session();
    audioOutput_->start();
    channel_->receive(this->shared_from_this());
}

void AudioService::onAVChannelStopIndication(const aasdk::proto::messages::AVChannelStopIndication& indication)
{
    OPENAUTO_LOG(info) << "[AudioService] stop indication"
                       << ", channel: " << aasdk::messenger::channelIdToString(channel_->getId())
                       << ", session: " << session_;
    session_ = -1;
    audioOutput_->suspend();
    channel_->receive(this->shared_from_this());
}

void AudioService::onAVMediaWithTimestampIndication(aasdk::messenger::Timestamp::ValueType timestamp, const aasdk::common::DataConstBuffer& buffer)
{
    audioOutput_->write(timestamp, buffer);
    aasdk::proto::messages::AVMediaAckIndication indication;
    indication.set_session(session_);
    indication.set_value(1);

    auto promise = aasdk::channel::SendPromise::defer(strand_);
    promise->then([]() {}, std::bind(&AudioService::onChannelError, this->shared_from_this(), std::placeholders::_1));
    channel_->sendAVMediaAckIndication(indication, std::move(promise));
    channel_->receive(this->shared_from_this());
}

void AudioService::onAVMediaIndication(const aasdk::common::DataConstBuffer& buffer)
{
    this->onAVMediaWithTimestampIndication(0, buffer);
}

void AudioService::onChannelError(const aasdk::error::Error& e)
{
    OPENAUTO_LOG(error) << "[AudioService] channel error: " << e.what()
                        << ", channel: " << aasdk::messenger::channelIdToString(channel_->getId());
}

}
}
}
}