/***************************************************************************************
 *
 *  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
 *
 *  By downloading, copying, installing or using the software you agree to this license.
 *  If you do not agree to this license, do not download, install, 
 *  copy or use the software.
 *
 *  Copyright (C) 2014-2024, Happytimesoft Corporation, all rights reserved.
 *
 *  Redistribution and use in binary forms, with or without modification, are permitted.
 *
 *  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.
 *
****************************************************************************************/

#include "srt_player.h"
#include "utils.h"

/***************************************************************************************/

int srt_notify_callback(int evt, void * puser)
{
    CSrtPlayer * pPlayer = (CSrtPlayer *) puser;
    
    pPlayer->onNotify(evt);
    return 0;
}

int srt_audio_callback(uint8 * pdata, int len, uint32 ts, void *puser)
{
    CSrtPlayer * pPlayer = (CSrtPlayer *) puser;

    pPlayer->onAudio(pdata, len, ts);
    return 0;
}

int srt_video_callback(uint8 * pdata, int len, uint32 ts, void *puser)
{
    CSrtPlayer * pPlayer = (CSrtPlayer *) puser;

    pPlayer->onVideo(pdata, len, ts);
    return 0;
}

/***************************************************************************************/

CSrtPlayer::CSrtPlayer(): CVideoPlayer()
, m_port(-1)
{
    memset(m_ip, 0, sizeof(m_ip));
}

CSrtPlayer::~CSrtPlayer()
{
    close();
}
std::string CSrtPlayer::createNewSRTUrl(const std::string& username,
    const std::string& password,
    const std::string& url) {
    // Copy the original strings to avoid modifying the originals
    std::string modUsername = username;
    std::string modPassword = password;

    // Replace '@' with '_' in username and password
    std::replace(modUsername.begin(), modUsername.end(), '@', '_');
    std::replace(modPassword.begin(), modPassword.end(), '@', '_');

    // Extract the protocol and rest of the URL
    size_t protocolEndPos = url.find("://") + 3; // Find the position right after "://"
    std::string protocol = url.substr(0, protocolEndPos); // Include "://"

    // Construct the new URL with modified credentials
    std::string newUrl = protocol;
    newUrl += modUsername + ":" + modPassword + "@";
    newUrl += url.substr(protocolEndPos);
    return newUrl;
}

BOOL CSrtPlayer::open(std::string fileName)
{
    close();

    CVideoPlayer::open(fileName);

    int port;
    char proto[32], username[100], password[100], host[100], path[200];

    url_split(fileName.c_str(), proto, sizeof(proto), username, sizeof(username), 
        password, sizeof(password), host, sizeof(host), &port, path, sizeof(path));

    if (host[0] == '\0')
    {
        return FALSE;
    }

    if (port <= 0)
    {
        return FALSE;
    }

    if (username[0] != '\0')
    {
        m_acct = username;
    }

    if (password[0] != '\0')
    {
        m_pass = password;
    }

	strncpy(m_ip, host, sizeof(m_ip) - 1);

	m_port = port;
	
	m_srt.set_notify_cb(srt_notify_callback, this);
    m_srt.set_audio_cb(srt_audio_callback);
    m_srt.set_video_cb(srt_video_callback);

	return TRUE;
}

BOOL CSrtPlayer::open(std::string _username, std::string _password, std::string _url)
{
    close();

    CVideoPlayer::open(_username, _password, _url);

    int port;
    char proto[32], username[100], password[100], host[100], path[200];
    std::string fileName = createNewSRTUrl(_username, _password, _url);

    url_split(fileName.c_str(), proto, sizeof(proto), username, sizeof(username),
        password, sizeof(password), host, sizeof(host), &port, path, sizeof(path));

    if (host[0] == '\0')
    {
        return FALSE;
    }

    if (port <= 0)
    {
        return FALSE;
    }

   
    strncpy(m_ip, host, sizeof(m_ip) - 1);

    m_port = port;

    m_srt.set_notify_cb(srt_notify_callback, this);
    m_srt.set_audio_cb(srt_audio_callback);
    m_srt.set_video_cb(srt_video_callback);

    return TRUE;
}
void CSrtPlayer::close()
{
	// stop connection
	m_srt.srt_stop();
	m_srt.srt_close();

    m_bPlaying = FALSE;
    m_bPaused = FALSE;
    CVideoPlayer::StopVideoDecoder();
    m_port = -1;

    memset(m_ip, 0, sizeof(m_ip));

    CVideoPlayer::close();
}

BOOL CSrtPlayer::play()
{
	if (m_srt.srt_start(m_sFileName.c_str(), m_acct.c_str(), m_pass.c_str()))
    {
        m_bPlaying = TRUE;
        m_bPaused = FALSE;
    }
    CVideoPlayer::StartVideoDecoder();// Start the video decoder
    return m_bPlaying;
}

void CSrtPlayer::stop()
{
    if (m_bPlaying || m_bPaused)
    {
        m_srt.srt_stop();
    }

    // Set flags BEFORE stopping decoder so rx thread stops calling decode()
    m_bPlaying = FALSE;
    m_bPaused = FALSE;
    CVideoPlayer::StopVideoDecoder(); // Stop the video decoder
}

BOOL CSrtPlayer::pause()
{
    if (m_bPlaying)
    {
        if (m_srt.srt_pause())
        {
            m_bPaused = TRUE;
            m_bPlaying = FALSE;
        }
    }
    else if (m_bPaused)
    {
        if (m_srt.srt_play())
        {
            m_bPaused = FALSE;
            m_bPlaying = TRUE;
        }
    }

    CVideoPlayer::StopVideoDecoder(); // Stop the video decoder
    return m_bPaused;
}

BOOL CSrtPlayer::seek(int pos)
{
    if (pos < 0 || pos > 100)
    {
        return FALSE;
    }

    int64 duration = getDuration();
    if (duration <= 0)
    {
        return FALSE;
    }

    int ntp_pos = duration / 100 * pos;
    
    // m_srt.srt_play();

    return TRUE;
}

int64 CSrtPlayer::getElapse()
{
    return 0;
}

int64 CSrtPlayer::getDuration()
{
    return 0;
}

int CSrtPlayer::getVideoClock()
{
    return 90000;
}

int CSrtPlayer::getAudioClock()
{
    return 90000;
}

int CSrtPlayer::getVideoCodec()
{
    return m_srt.video_codec();
}

int CSrtPlayer::getAudioCodec()
{
    return m_srt.audio_codec();
}

void CSrtPlayer::onNotify(int evt)
{
	if (evt == SRT_EVE_VIDEOREADY)
	{
		int videoCodec = m_srt.video_codec();

        if (VIDEO_CODEC_NONE != videoCodec)
		{
			openVideo(videoCodec);
		}
	}
	else if (evt == SRT_EVE_AUDIOREADY)
	{
		int audioCodec = m_srt.audio_codec();

		if (AUDIO_CODEC_NONE != audioCodec)
		{
			openAudio(audioCodec, m_srt.get_audio_samplerate(), m_srt.get_audio_channels());
		}
	}
}

void CSrtPlayer::onAudio(uint8 * pdata, int len, uint32 ts)
{
    playAudio(pdata, len, ts, 0);
}

void CSrtPlayer::onVideo(uint8 * pdata, int len, uint32 ts)
{
    playVideo(pdata, len, ts, 0);
}

void  CSrtPlayer::setBbox(cv::Rect bbox) {
    CVideoPlayer::setBbox(bbox);
}
void  CSrtPlayer::setCrop(bool crop) {
    CVideoPlayer::setCrop(crop);
}

BOOL CSrtPlayer::onRecord()
{
	CSrtClient * p_srt = &m_srt;
    AVICTX * p_avictx = m_pAviCtx;
    
    int vcodec = p_srt->video_codec();
    int v_extra_len = 0;
    uint8 v_extra[1024];
    
    if (VIDEO_CODEC_H264 == vcodec)
    {
        avi_set_video_info(p_avictx, 0, 0, 0, "H264");

        uint8 sps[512], pps[512];
		int sps_len = 0, pps_len = 0;
        
        if (p_srt->get_h264_params(sps, &sps_len, pps, &pps_len))
        {
            memcpy(v_extra, sps, sps_len);
            memcpy(v_extra + sps_len, pps, pps_len);

            v_extra_len = sps_len + pps_len;
        }

        if (v_extra_len > 0)
        {
			avi_set_video_extra_info(p_avictx, v_extra, v_extra_len);
        }
    }
    else if (VIDEO_CODEC_H265 == vcodec)
    {
        avi_set_video_info(p_avictx, 0, 0, 0, "H265");

        uint8 vps[512], sps[512], pps[512];
        int vps_len = 0, sps_len = 0, pps_len = 0;
            
        if (p_srt->get_h265_params(sps, &sps_len, pps, &pps_len, vps, &vps_len))
        {
            memcpy(v_extra, vps, vps_len);
            memcpy(v_extra + vps_len, sps, sps_len);
            memcpy(v_extra + vps_len + sps_len, pps, pps_len);

            v_extra_len = vps_len + sps_len + pps_len;
        }

        if (v_extra_len > 0)
        {
			avi_set_video_extra_info(p_avictx, v_extra, v_extra_len);
        }
    }
    else if (VIDEO_CODEC_JPEG == vcodec)
    {
        avi_set_video_info(p_avictx, 0, 0, 0, "JPEG");
    }
    else if (VIDEO_CODEC_MP4 == vcodec)
    {
        avi_set_video_info(p_avictx, 0, 0, 0, "MP4V");
    }

    int acodec = p_srt->audio_codec();
    int sr = p_srt->get_audio_samplerate();
    int ch = p_srt->get_audio_channels();
	    
    if (AUDIO_CODEC_G711A == acodec)
    {
        avi_set_audio_info(p_avictx, ch, sr, AUDIO_FORMAT_ALAW);
    }
    else if (AUDIO_CODEC_G711U == acodec)
    {
        avi_set_audio_info(p_avictx, ch, sr, AUDIO_FORMAT_MULAW);
    }
    else if (AUDIO_CODEC_G726 == acodec)
    {
        avi_set_audio_info(p_avictx, ch, sr, AUDIO_FORMAT_G726);
    }
    else if (AUDIO_CODEC_G722 == acodec)
    {
        avi_set_audio_info(p_avictx, ch, sr, AUDIO_FORMAT_G722);
    }
    else if (AUDIO_CODEC_AAC == acodec)
    {
        avi_set_audio_info(p_avictx, ch, sr, AUDIO_FORMAT_AAC);
        avi_set_audio_extra_info(p_avictx, p_srt->get_audio_config(), p_srt->get_audio_config_len());
    }

    avi_update_header(p_avictx);

    if (p_avictx->ctxf_video)
    {
        if (v_extra_len > 0)
        {
            recordVideo(v_extra, v_extra_len, 0, 0);
        }
    }
    
	return TRUE;
}