/**
 * Author : Gérald FENOY
 *
 * Copyright 2017 GeoLabs SARL. All rights reserved.
 *
 * This work was supported by public funds received in the framework of GEOSUD,
 * a project (ANR-10-EQPX-20) of the program "Investissements d'Avenir" managed
 * by the French National Research Agency
 *
 * 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 "service.h"
#include "service_internal.h"
#include "sshapi.h"
#include "server_internal.h"

#include <sys/socket.h>
#include <sys/un.h>

#include <libxml/tree.h>
#include <libxml/parser.h>
#include <libxml/xpath.h>
#include <libxml/xpathInternals.h>

#include <libxslt/xslt.h>
#include <libxslt/xsltInternals.h>
#include <libxslt/transform.h>
#include <libxslt/xsltutils.h>

#include <dirent.h>
extern "C" {

  /**
   * FinalizeHPC ZOO Service :
   * This service is used to inform a ZOO-Kernel waiting for the end of the
   * execution of a HPC service
   */
  ZOO_DLL_EXPORT int FinalizeHPC(maps*& conf,maps*& inputs,maps*& outputs){
    // Retrieve the jobid corresponding to the identifier generated by SLURM
    // by reading the file generated when running the SBATCH file
    map* jobid=getMapFromMaps(inputs,"jobid","value");
    struct sockaddr_un addr;
    char buf[100]="3";
    int fd,rc=NULL;
    int i=0;
    map* usid=getMapFromMaps(conf,"lenv","usid");
    map* tmpPath=getMapFromMaps(conf,"main","tmpPath");

    char *flenv =
      (char *) malloc ((strlen (tmpPath->value) + 
			strlen (jobid->value) + 12) * sizeof (char));
    sprintf (flenv, "%s/%s_lenv.cfg", tmpPath->value, jobid->value);
    maps* m = (maps *) malloc (MAPS_SIZE);
    m->child=NULL;
    m->next=NULL;
    map* configId=NULL;

    
    if(conf_read(flenv, m) != 2){
      configId=getMapFromMaps(m,"lenv","configId");
      setMapInMaps(conf,"lenv","configId",configId->value);
    }else{
      setMapInMaps(conf,"lenv","message",_("Unable to read the lenv section file of the requested jobid"));
      return SERVICE_FAILED;
    }
    
    SSHCON *test=ssh_connect(conf);
    /*if(test==NULL){
      setMapInMaps(conf,"lenv","message",_("Unable to connect using ssh."));
      return SERVICE_FAILED;
      }*/

    char *logPath=(char*)malloc((strlen(tmpPath->value)+strlen(jobid->value)+12)*sizeof(char));
    sprintf(logPath,"%s/exec_out_%s",tmpPath->value,jobid->value);
    struct stat f_status;
    int ts=stat(logPath, &f_status);
    char* fcontent = NULL;
    if(ts==0) {
      fcontent=(char*)malloc(sizeof(char)*(f_status.st_size+1));
      FILE* f=fopen(logPath,"rb");
      fread(fcontent,f_status.st_size,1,f);
      int fsize=f_status.st_size;
      fcontent[fsize]=0;
      fclose(f);
    }else{
      setMapInMaps(conf,"lenv","message",_("No service with this jobid can be found"));
      return SERVICE_FAILED;
    }
    free(logPath);
    // Run scontrol to check if the service execution ended.
    // Store all the informations returned by scontrol command as a cfg file to
    // be parsed back by the ZOO-Kernel waiting for the execution of the remote
    // service
    maps* tmpMaps=createMaps("henv");
    char* command=(char*)malloc((126)*sizeof(char));
    sprintf(command,"scontrol show jobid | grep -A24 JobId=%s",fcontent);    
    if(ssh_exec(conf,command,ssh_get_cnt(conf))==0){
      free(command);
      setMapInMaps(conf,"lenv","message",_("Failed to run scontrol remotely"));
      // TODO: check status in db and if available continue in other case return SERVICE_FAILED
      return SERVICE_FAILED;
    }else{
      free(command);
      logPath=(char*)malloc((strlen(tmpPath->value)+strlen(usid->value)+11)*sizeof(char));
      sprintf(logPath,"%s/exec_out_%s",tmpPath->value,usid->value);
      int ts=stat(logPath, &f_status);
      if(ts==0) {
	fcontent=(char*)malloc(sizeof(char)*(f_status.st_size+1));
	FILE* f=fopen(logPath,"rb");
	fread(fcontent,f_status.st_size,1,f);
	int fsize=f_status.st_size;
	fcontent[fsize]=0;
	fclose(f);
	free(logPath);
	char *token, *saveptr;
	token = strtok_r (fcontent, " ", &saveptr);
	while (token != NULL)
	  {
	    char *token1, *saveptr1;
	    char *tmpToken=strdup(token);
	    token1 = strtok_r (tmpToken, "=", &saveptr1);
	    int isNext=-1;
	    int hasTwoElements=0;
	    char *name=NULL;
	    while (token1 != NULL)
	      {
		if(hasTwoElements==0)
		  name=strdup(token1);
		if(hasTwoElements<1)
		  hasTwoElements+=1;
		else{
		  char *value=strdup(token1);
		  if(value[strlen(value)-1]=='\n')
		    value[strlen(value)-1]=0;
		  if(strlen(name)>0 && strlen(value)>0){
		    if(tmpMaps->content==NULL)
		      tmpMaps->content=createMap(name,value);
		    else
		      addToMap(tmpMaps->content,name,value);
		    free(value);
		  }
		  free(name);
		  hasTwoElements=0;
		}
		token1 = strtok_r (NULL, "=", &saveptr1);
	      }
	    free(tmpToken);
	    token = strtok_r (NULL, " ", &saveptr);
	  }
      }else{
	setMapInMaps(conf,"lenv","message",_("Unable to access the downloaded execution log file"));
	return SERVICE_FAILED;
      }
    }
    logPath=(char*)malloc((strlen(tmpPath->value)+strlen(jobid->value)+15)*sizeof(char));
    sprintf(logPath,"%s/exec_status_%s",tmpPath->value,jobid->value);
    dumpMapsToFile(tmpMaps,logPath,0);
    char *sname=(char*)malloc((strlen(tmpPath->value)+strlen(jobid->value)+21));
    sprintf(sname,"%s/.wait_socket_%s.sock",tmpPath->value,jobid->value);
    if ( (fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
      perror("socket error");
      setMapInMaps(conf,"lenv","message",_("Socket error"));
      return SERVICE_FAILED;
    }
    memset(&addr, 0, sizeof(addr));
    addr.sun_family = AF_UNIX;
    strncpy(addr.sun_path, sname, sizeof(addr.sun_path)-1);
    if (connect(fd, (struct sockaddr*)&addr, sizeof(addr)) == -1) {
      perror("connect error");
      setMapInMaps(conf,"lenv","message",_("Unable to connect"));
      return SERVICE_FAILED;
    }
    if (write(fd, "3", 1) != rc) {
      if (rc < 0) {
	perror("write error");
	setMapInMaps(conf,"lenv","message",_("Unable to announce the successful execution of the HPC service"));
	close(fd);
	return SERVICE_FAILED;
      }
    }
    close(fd);
    setOutputValue(outputs,"Result",(char*)"\"FinalizeHPC run successfully\"",32);
    unlink(flenv);
    free(flenv);

    return SERVICE_SUCCEEDED;
  }


  /**
   * FinalizeHPC1 ZOO Service :
   * This service is used to inform a ZOO-Kernel waiting for the end of the
   * execution of a HPC service
   *
   * format="AllocCPUS"; for i in $(sacct -e) ; do format="$format,$i"; done; format="$(echo $format | sed "s:AllocCPUS,::")" ; echo $format; sacct --format=$format -p | grep "997f-11e8-9f78-0050569320d2" 
   *
   * AllocCPUS,AllocGRES,AllocNodes,AllocTRES,Account,AssocID,AveCPU,AveCPUFreq,AveDiskRead,AveDiskWrite,AvePages,AveRSS,AveVMSize,BlockID,Cluster,Comment,ConsumedEnergy,ConsumedEnergyRaw,CPUTime,CPUTimeRAW,DerivedExitCode,Elapsed,Eligible,End,ExitCode,GID,Group,JobID,JobIDRaw,JobName,Layout,MaxDiskRead,MaxDiskReadNode,MaxDiskReadTask,MaxDiskWrite,MaxDiskWriteNode,MaxDiskWriteTask,MaxPages,MaxPagesNode,MaxPagesTask,MaxRSS,MaxRSSNode,MaxRSSTask,MaxVMSize,MaxVMSizeNode,MaxVMSizeTask,MinCPU,MinCPUNode,MinCPUTask,NCPUS,NNodes,NodeList,NTasks,Priority,Partition,QOS,QOSRAW,ReqCPUFreq,ReqCPUFreqMin,ReqCPUFreqMax,ReqCPUFreqGov,ReqCPUS,ReqGRES,ReqMem,ReqNodes,ReqTRES,Reservation,ReservationId,Reserved,ResvCPU,ResvCPURAW,Start,State,Submit,Suspended,SystemCPU,Timelimit,TotalCPU,UID,User,UserCPU,WCKey,WCKeyID
   * 28||1|cpu=28,node=1|geosud|258|||||||||cluster||||00:00:56|56|0:0|00:00:02|2018-08-06T15:48:13|2018-08-06T15:48:16|0:0|1019|geosud|883299|883299|ZOO-Project_5bd1c32b-997f-11e8-9f78-0050569320d2_GSDBandMath_6_2_005||||||||||||||||||||28|1|muse044||4294360886|defq|qos_geosud|20|Unknown|Unknown|Unknown|Unknown|1||0n|1|cpu=1,node=1|||00:00:01|00:00:01|1|2018-08-06T15:48:14|COMPLETED|2018-08-06T15:48:13|00:00:00||UNLIMITED|00:00:00|1229|geosudwps|||0|
   * 
   */
  ZOO_DLL_EXPORT int FinalizeHPC1(maps*& conf,maps*& inputs,maps*& outputs){
    // Retrieve the jobid corresponding to the identifier generated by SLURM
    // by reading the file generated when running the SBATCH file
    map* jobid=getMapFromMaps(inputs,"jobid","value");
    struct sockaddr_un addr;
    char buf[100]="3";
    int fd,rc=NULL;
    int i=0;
    map* usid=getMapFromMaps(conf,"lenv","usid");
    map* tmpPath=getMapFromMaps(conf,"main","tmpPath");

    char *flenv =
      (char *) malloc ((strlen (tmpPath->value) + 
			strlen (jobid->value) + 12) * sizeof (char));
    sprintf (flenv, "%s/%s_lenv.cfg", tmpPath->value, jobid->value);
    maps* m = (maps *) malloc (MAPS_SIZE);
    m->child=NULL;
    m->next=NULL;
    map* configId=NULL;

    
    if(conf_read(flenv, m) != 2){
      configId=getMapFromMaps(m,"lenv","configId");
      setMapInMaps(conf,"lenv","configId",configId->value);
    }else{
      setMapInMaps(conf,"lenv","message",_("Unable to read the lenv section file of the requested jobid"));
      return SERVICE_FAILED;
    }

    SSHCON *test=ssh_connect(conf);
    /*if(test==NULL){
      setMapInMaps(conf,"lenv","message",_("Unable to connect using ssh."));
      return SERVICE_FAILED;
      }*/

    char *logPath=(char*)malloc((strlen(tmpPath->value)+strlen(jobid->value)+12)*sizeof(char));
    sprintf(logPath,"%s/exec_out_%s",tmpPath->value,jobid->value);
    struct stat f_status;
    int ts=stat(logPath, &f_status);
    char* fcontent = NULL;
    if(ts==0) {
      fcontent=(char*)malloc(sizeof(char)*(f_status.st_size+1));
      FILE* f=fopen(logPath,"rb");
      fread(fcontent,f_status.st_size,1,f);
      int fsize=f_status.st_size;
      fcontent[fsize]=0;
      fclose(f);
    }else{
      setMapInMaps(conf,"lenv","message",_("No service with this jobid can be found"));
      return SERVICE_FAILED;
    }
    free(logPath);
    // Run sacct to check if the service execution ended.
    // Store all the informations returned by scontrol command as a cfg file to
    // be parsed back by the ZOO-Kernel waiting for the execution of the remote
    // service
    maps* tmpMaps=createMaps("henv");
    
    map* tmpMap=getMapFromMaps(conf,configId->value,"remote_command_opt");
    char* command=(char*)malloc((126+strlen(tmpMap->value))*sizeof(char));
    sprintf(command,"sacct --format=%s -p | grep \"%s\" | sed \"s:||:|None|:g;s:||:|None|:g\"",tmpMap->value,jobid->value);    
    if(ssh_exec(conf,command,ssh_get_cnt(conf))==0){
      free(command);
      setMapInMaps(conf,"lenv","message",_("Failed to run sacct remotely"));
      // TODO: check status in db and if available continue in other case return SERVICE_FAILED
      return SERVICE_FAILED;
    }else{
      free(command);
      logPath=(char*)malloc((strlen(tmpPath->value)+strlen(usid->value)+11)*sizeof(char));
      sprintf(logPath,"%s/exec_out_%s",tmpPath->value,usid->value);
      int ts=stat(logPath, &f_status);
      if(ts==0) {
	fcontent=(char*)malloc(sizeof(char)*(f_status.st_size+1));
	FILE* f=fopen(logPath,"rb");
	fread(fcontent,f_status.st_size,1,f);
	int fsize=f_status.st_size;
	fcontent[fsize]=0;
	fclose(f);
	free(logPath);
	char *token, *saveptr;
	char *token1, *saveptr1;
	token = strtok_r (tmpMap->value, ",", &saveptr);
	token1 = strtok_r (fcontent, "|", &saveptr1);
	while (token != NULL) {
	  fprintf(stderr,"%s %d %s \n",__FILE__,__LINE__,token);
	  fflush(stderr);
	  fprintf(stderr,"%s %d %s %s \n",__FILE__,__LINE__,token,token1);
	  fflush(stderr);
	  if(token1 != NULL){
	    if(tmpMaps->content==NULL)
	      tmpMaps->content=createMap(token,token1);
	    else
	      addToMap(tmpMaps->content,token,token1);
	  }
	  token = strtok_r (NULL, ",", &saveptr);
	  token1 = strtok_r (NULL, "|", &saveptr1);
	}
      }else{
	free(logPath);
	setMapInMaps(conf,"lenv","message",_("Unable to access the downloaded execution log file"));
	return SERVICE_FAILED;
      }
    }
    tmpMap=getMapFromMaps(tmpMaps,"henv","JobId");
    if(tmpMap!=NULL){
      char* tmpStr=(char*)malloc((32)*sizeof(char));
      sprintf(tmpStr,"slurm-%s.out",tmpMap->value);
      addToMap(tmpMaps->content,"StdErr",tmpStr); 
      free(tmpStr);
    }
    logPath=(char*)malloc((strlen(tmpPath->value)+strlen(jobid->value)+15)*sizeof(char));
    sprintf(logPath,"%s/exec_status_%s",tmpPath->value,jobid->value);
    dumpMapsToFile(tmpMaps,logPath,0);
    char *sname=(char*)malloc((strlen(tmpPath->value)+strlen(jobid->value)+21));
    sprintf(sname,"%s/.wait_socket_%s.sock",tmpPath->value,jobid->value);
    if ( (fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
      perror("socket error");
      setMapInMaps(conf,"lenv","message",_("Socket error"));
      return SERVICE_FAILED;
    }
    memset(&addr, 0, sizeof(addr));
    addr.sun_family = AF_UNIX;
    strncpy(addr.sun_path, sname, sizeof(addr.sun_path)-1);
    if (connect(fd, (struct sockaddr*)&addr, sizeof(addr)) == -1) {
      perror("connect error");
      setMapInMaps(conf,"lenv","message",_("Unable to connect"));
      return SERVICE_FAILED;
    }
    if (write(fd, "3", 1) != rc) {
      if (rc < 0) {
	perror("write error");
	setMapInMaps(conf,"lenv","message",_("Unable to announce the successful execution of the HPC service"));
	close(fd);
	return SERVICE_FAILED;
      }
    }
    close(fd);
    unlink(flenv);
    free(flenv);
    setOutputValue(outputs,"Result",(char*)"\"FinalizeHPC run successfully\"",32);

    return SERVICE_SUCCEEDED;
  }
  
}