/*
The MIT License (MIT)

Copyright (c) 2013-2015 winlin

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

#include <srs_app_http_hooks.hpp>

#ifdef SRS_AUTO_HTTP_CALLBACK

#include <sstream>
using namespace std;

#include <srs_kernel_error.hpp>
#include <srs_rtmp_sdk.hpp>
#include <srs_app_st_socket.hpp>
#include <srs_app_http.hpp>
#include <srs_app_json.hpp>
#include <srs_app_dvr.hpp>
#include <srs_app_http_client.hpp>
#include <srs_core_autofree.hpp>

#define SRS_HTTP_RESPONSE_OK    __SRS_XSTR(ERROR_SUCCESS)

#define SRS_HTTP_HEADER_BUFFER        1024
#define SRS_HTTP_BODY_BUFFER        32 * 1024

SrsHttpHooks::SrsHttpHooks()
{
}

SrsHttpHooks::~SrsHttpHooks()
{
}

int SrsHttpHooks::on_connect(string url, int client_id, string ip, SrsRequest* req)
{
    int ret = ERROR_SUCCESS;
    
    std::stringstream ss;
    ss << __SRS_JOBJECT_START
        << __SRS_JFIELD_STR("action", "on_connect") << __SRS_JFIELD_CONT
        << __SRS_JFIELD_ORG("client_id", client_id) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("ip", ip) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("vhost", req->vhost) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("app", req->app) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("tcUrl", req->tcUrl) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("pageUrl", req->pageUrl)
        << __SRS_JOBJECT_END;
        
    std::string data = ss.str();
    std::string res;
    int status_code;
    if ((ret = do_post(url, data, status_code, res)) != ERROR_SUCCESS) {
        srs_error("http post on_connect uri failed. "
            "client_id=%d, url=%s, request=%s, response=%s, code=%d, ret=%d",
            client_id, url.c_str(), data.c_str(), res.c_str(), status_code, ret);
        return ret;
    }
    
    srs_trace("http hook on_connect success. "
        "client_id=%d, url=%s, request=%s, response=%s, ret=%d",
        client_id, url.c_str(), data.c_str(), res.c_str(), ret);
    
    return ret;
}

void SrsHttpHooks::on_close(string url, int client_id, string ip, SrsRequest* req, int64_t send_bytes, int64_t recv_bytes)
{
    int ret = ERROR_SUCCESS;
    
    std::stringstream ss;
    ss << __SRS_JOBJECT_START
        << __SRS_JFIELD_STR("action", "on_close") << __SRS_JFIELD_CONT
        << __SRS_JFIELD_ORG("client_id", client_id) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("ip", ip) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("vhost", req->vhost) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_ORG("send_bytes", send_bytes) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_ORG("recv_bytes", recv_bytes) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("app", req->app)
        << __SRS_JOBJECT_END;
        
    std::string data = ss.str();
    std::string res;
    int status_code;
    if ((ret = do_post(url, data, status_code, res)) != ERROR_SUCCESS) {
        srs_warn("http post on_close uri failed, ignored. "
            "client_id=%d, url=%s, request=%s, response=%s, code=%d, ret=%d",
            client_id, url.c_str(), data.c_str(), res.c_str(), status_code, ret);
        return;
    }
    
    srs_trace("http hook on_close success. "
        "client_id=%d, url=%s, request=%s, response=%s, ret=%d",
        client_id, url.c_str(), data.c_str(), res.c_str(), ret);
    
    return;
}

int SrsHttpHooks::on_publish(string url, int client_id, string ip, SrsRequest* req)
{
    int ret = ERROR_SUCCESS;
    
    std::stringstream ss;
    ss << __SRS_JOBJECT_START
        << __SRS_JFIELD_STR("action", "on_publish") << __SRS_JFIELD_CONT
        << __SRS_JFIELD_ORG("client_id", client_id) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("ip", ip) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("vhost", req->vhost) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("app", req->app) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("stream", req->stream)
        << __SRS_JOBJECT_END;
        
    std::string data = ss.str();
    std::string res;
    int status_code;
    if ((ret = do_post(url, data, status_code, res)) != ERROR_SUCCESS) {
        srs_error("http post on_publish uri failed. "
            "client_id=%d, url=%s, request=%s, response=%s, code=%d, ret=%d",
            client_id, url.c_str(), data.c_str(), res.c_str(), status_code, ret);
        return ret;
    }
    
    srs_trace("http hook on_publish success. "
        "client_id=%d, url=%s, request=%s, response=%s, ret=%d",
        client_id, url.c_str(), data.c_str(), res.c_str(), ret);
    
    return ret;
}

void SrsHttpHooks::on_unpublish(string url, int client_id, string ip, SrsRequest* req)
{
    int ret = ERROR_SUCCESS;
    
    std::stringstream ss;
    ss << __SRS_JOBJECT_START
        << __SRS_JFIELD_STR("action", "on_unpublish") << __SRS_JFIELD_CONT
        << __SRS_JFIELD_ORG("client_id", client_id) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("ip", ip) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("vhost", req->vhost) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("app", req->app) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("stream", req->stream)
        << __SRS_JOBJECT_END;
        
    std::string data = ss.str();
    std::string res;
    int status_code;
    if ((ret = do_post(url, data, status_code, res)) != ERROR_SUCCESS) {
        srs_warn("http post on_unpublish uri failed, ignored. "
            "client_id=%d, url=%s, request=%s, response=%s, code=%d, ret=%d",
            client_id, url.c_str(), data.c_str(), res.c_str(), status_code, ret);
        return;
    }
    
    srs_trace("http hook on_unpublish success. "
        "client_id=%d, url=%s, request=%s, response=%s, ret=%d",
        client_id, url.c_str(), data.c_str(), res.c_str(), ret);
    
    return;
}

int SrsHttpHooks::on_play(string url, int client_id, string ip, SrsRequest* req)
{
    int ret = ERROR_SUCCESS;
    
    std::stringstream ss;
    ss << __SRS_JOBJECT_START
        << __SRS_JFIELD_STR("action", "on_play") << __SRS_JFIELD_CONT
        << __SRS_JFIELD_ORG("client_id", client_id) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("ip", ip) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("vhost", req->vhost) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("app", req->app) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("stream", req->stream)
        << __SRS_JOBJECT_END;
        
    std::string data = ss.str();
    std::string res;
    int status_code;
    if ((ret = do_post(url, data, status_code, res)) != ERROR_SUCCESS) {
        srs_error("http post on_play uri failed. "
            "client_id=%d, url=%s, request=%s, response=%s, code=%d, ret=%d",
            client_id, url.c_str(), data.c_str(), res.c_str(), status_code, ret);
        return ret;
    }
    
    srs_trace("http hook on_play success. "
        "client_id=%d, url=%s, request=%s, response=%s, ret=%d",
        client_id, url.c_str(), data.c_str(), res.c_str(), ret);
    
    return ret;
}

void SrsHttpHooks::on_stop(string url, int client_id, string ip, SrsRequest* req)
{
    int ret = ERROR_SUCCESS;
    
    std::stringstream ss;
    ss << __SRS_JOBJECT_START
        << __SRS_JFIELD_STR("action", "on_stop") << __SRS_JFIELD_CONT
        << __SRS_JFIELD_ORG("client_id", client_id) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("ip", ip) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("vhost", req->vhost) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("app", req->app) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("stream", req->stream)
        << __SRS_JOBJECT_END;
        
    std::string data = ss.str();
    std::string res;
    int status_code;
    if ((ret = do_post(url, data, status_code, res)) != ERROR_SUCCESS) {
        srs_warn("http post on_stop uri failed, ignored. "
            "client_id=%d, url=%s, request=%s, response=%s, code=%d, ret=%d",
            client_id, url.c_str(), data.c_str(), res.c_str(), status_code, ret);
        return;
    }
    
    srs_trace("http hook on_stop success. "
        "client_id=%d, url=%s, request=%s, response=%s, ret=%d",
        client_id, url.c_str(), data.c_str(), res.c_str(), ret);
    
    return;
}

int SrsHttpHooks::on_dvr(string url, int client_id, string ip, SrsRequest* req, string cwd, string file)
{
    int ret = ERROR_SUCCESS;
    
    std::stringstream ss;
    ss << __SRS_JOBJECT_START
        << __SRS_JFIELD_STR("action", "on_dvr") << __SRS_JFIELD_CONT
        << __SRS_JFIELD_ORG("client_id", client_id) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("ip", ip) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("vhost", req->vhost) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("app", req->app) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("stream", req->stream) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("cwd", cwd) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("file", file)
        << __SRS_JOBJECT_END;
        
    std::string data = ss.str();
    std::string res;
    int status_code;
    if ((ret = do_post(url, data, status_code, res)) != ERROR_SUCCESS) {
        srs_error("http post on_dvr uri failed, ignored. "
            "client_id=%d, url=%s, request=%s, response=%s, code=%d, ret=%d",
            client_id, url.c_str(), data.c_str(), res.c_str(), status_code, ret);
        return ret;
    }
    
    srs_trace("http hook on_dvr success. "
        "client_id=%d, url=%s, request=%s, response=%s, ret=%d",
        client_id, url.c_str(), data.c_str(), res.c_str(), ret);
    
    return ret;
}

int SrsHttpHooks::on_dvr_reap_segment(string url, int client_id, SrsRequest* req, string cwd, string file)
{
    int ret = ERROR_SUCCESS;
    
    std::stringstream ss;
    ss << __SRS_JOBJECT_START
        << __SRS_JFIELD_STR("action", "on_dvr_reap_segment") << __SRS_JFIELD_CONT
        << __SRS_JFIELD_ORG("client_id", client_id) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("vhost", req->vhost) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("app", req->app) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("stream", req->stream) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("cwd", cwd) << __SRS_JFIELD_CONT
        << __SRS_JFIELD_STR("file", file)
        << __SRS_JOBJECT_END;
        
    std::string data = ss.str();
    std::string res;
    int status_code;
    if ((ret = do_post(url, data, status_code, res)) != ERROR_SUCCESS) {
        srs_error("http post on_dvr_reap_segment uri failed, ignored. "
            "client_id=%d, url=%s, request=%s, response=%s, code=%d, ret=%d",
            client_id, url.c_str(), data.c_str(), res.c_str(), status_code, ret);
        return ret;
    }
    
    srs_trace("http hook on_dvr_reap_segment success. "
        "client_id=%d, url=%s, request=%s, response=%s, ret=%d",
        client_id, url.c_str(), data.c_str(), res.c_str(), ret);
    
    return ret;
}

int SrsHttpHooks::do_post(std::string url, std::string req, int& code, string& res)
{
    int ret = ERROR_SUCCESS;
    
    SrsHttpUri uri;
    if ((ret = uri.initialize(url)) != ERROR_SUCCESS) {
        srs_error("http: post failed. url=%s, ret=%d", url.c_str(), ret);
        return ret;
    }
    
    SrsHttpClient http;
    if ((ret = http.initialize(uri.get_host(), uri.get_port())) != ERROR_SUCCESS) {
        return ret;
    }
    
    SrsHttpMessage* msg = NULL;
    if ((ret = http.post(uri.get_path(), req, &msg)) != ERROR_SUCCESS) {
        return ret;
    }
    SrsAutoFree(SrsHttpMessage, msg);
    
    code = msg->status_code();
    if ((ret = msg->body_read_all(res)) != ERROR_SUCCESS) {
        return ret;
    }
    
    // ensure the http status is ok.
    // https://github.com/winlinvip/simple-rtmp-server/issues/158
    if (code != SRS_CONSTS_HTTP_OK) {
        return ERROR_HTTP_STATUS_INVLIAD;
    }
    
    // TODO: FIXME: parse json.
    if (res.empty() || res != SRS_HTTP_RESPONSE_OK) {
        return ERROR_HTTP_DATA_INVLIAD;
    }

    return ret;
}

#endif