#include "cardreader.h"
//#include <unistd.h>
#ifdef SDSUPPORT

#include "Configuration.h"

CardReader::CardReader()
{
   filesize = 0;
   sdpos = 0;
   sdprinting = false;
   cardOK = false;
   saving = false;
   autostart_atmillis=0;

   autostart_stilltocheck=true; //the sd start is delayed, because otherwise the serial cannot answer fast enought to make contact with the hostsoftware.
  //power to SD reader
  #if SDPOWER > -1
    SET_OUTPUT(SDPOWER); 
    WRITE(SDPOWER,HIGH);
  #endif //SDPOWER
  
  autostart_atmillis=millis()+5000;
}

char *createFilename(char *buffer,const dir_t &p) //buffer>12characters
{
  char *pos=buffer;
  for (uint8_t i = 0; i < 11; i++) 
  {
    if (p.name[i] == ' ')continue;
    if (i == 8) 
    {
      *pos++='.';
    }
    *pos++=p.name[i];
  }
  *pos++=0;
  return buffer;
}


void  CardReader::lsDive(char *prepend,SdFile parent)
{
  dir_t p;
 uint8_t cnt=0;
 
  while (parent.readDir(p) > 0)
  {
    if( DIR_IS_SUBDIR(&p) && lsAction!=LS_Count && lsAction!=LS_GetFilename)
    {

      char path[13*2];
      char lfilename[13];
      createFilename(lfilename,p);
      
      path[0]=0;
      if(strlen(prepend)==0) //avoid leading / if already in prepend
      {
       strcat(path,"/");
      }
      strcat(path,prepend);
      strcat(path,lfilename);
      strcat(path,"/");
      
      //Serial.print(path);
      
      SdFile dir;
      if(!dir.open(parent,lfilename, O_READ))
      {
        if(lsAction==LS_SerialPrint)
        {
          SERIAL_ECHO_START;
          SERIAL_ECHOLN("Cannot open subdir");
          SERIAL_ECHOLN(lfilename);
        }
      }
      lsDive(path,dir);
      //close done automatically by destructor of SdFile

      
    }
    else
    {
      if (p.name[0] == DIR_NAME_FREE) break;
      if (p.name[0] == DIR_NAME_DELETED || p.name[0] == '.'|| p.name[0] == '_') continue;
      if ( p.name[0] == '.')
      {
        if ( p.name[1] != '.')
        continue;
      }
      if (!DIR_IS_FILE_OR_SUBDIR(&p)) continue;
      filenameIsDir=DIR_IS_SUBDIR(&p);
      
      if(!filenameIsDir)
      {
        if(p.name[8]!='G') continue;
        if(p.name[9]=='~') continue;
      }
      //if(cnt++!=nr) continue;
      createFilename(filename,p);
      if(lsAction==LS_SerialPrint)
      {
        SERIAL_PROTOCOL(prepend);
        SERIAL_PROTOCOLLN(filename);
      }
      else if(lsAction==LS_Count)
      {
        nrFiles++;
      } 
      else if(lsAction==LS_GetFilename)
      {
        if(cnt==nrFiles)
          return;
        cnt++;
        
      }
    }
  }
}

void CardReader::ls() 
{
  lsAction=LS_SerialPrint;
  if(lsAction==LS_Count)
  nrFiles=0;

  root.rewind();
  lsDive("",root);
}


void CardReader::initsd()
{
  cardOK = false;
  if(root.isOpen())
    root.close();
  if (!card.init(SPI_FULL_SPEED,SDSS))
  {
    //if (!card.init(SPI_HALF_SPEED,SDSS))
    SERIAL_ECHO_START;
    SERIAL_ECHOLNPGM("SD init fail");
  }
  else if (!volume.init(&card))
  {
    SERIAL_ERROR_START;
    SERIAL_ERRORLNPGM("volume.init failed");
  }
  else if (!root.openRoot(&volume)) 
  {
    SERIAL_ERROR_START;
    SERIAL_ERRORLNPGM("openRoot failed");
  }
  else 
  {
    cardOK = true;
    SERIAL_ECHO_START;
    SERIAL_ECHOLNPGM("SD card ok");
  }
  curDir=&root;
  if(!workDir.openRoot(&volume))
  {
    SERIAL_ECHOLNPGM("workDir open failed");
  }
}
void CardReader::release()
{
  sdprinting = false;
  cardOK = false;
}

void CardReader::startFileprint()
{
  if(cardOK)
  {
    sdprinting = true;
    
  }
}

void CardReader::pauseSDPrint()
{
  if(sdprinting)
  {
    sdprinting = false;
  }
}



void CardReader::openFile(char* name,bool read)
{
  if(!cardOK)
    return;
  file.close();
  sdprinting = false;
  
  
  SdFile myDir;
  curDir=&root;
  char *fname=name;
  
  char *dirname_start,*dirname_end;
  if(name[0]=='/')
  {
    dirname_start=strchr(name,'/')+1;
    while(dirname_start>0)
    {
      dirname_end=strchr(dirname_start,'/');
      //SERIAL_ECHO("start:");SERIAL_ECHOLN((int)(dirname_start-name));
      //SERIAL_ECHO("end  :");SERIAL_ECHOLN((int)(dirname_end-name));
      if(dirname_end>0 && dirname_end>dirname_start)
      {
        char subdirname[13];
        strncpy(subdirname, dirname_start, dirname_end-dirname_start);
        subdirname[dirname_end-dirname_start]=0;
        SERIAL_ECHOLN(subdirname);
        if(!myDir.open(curDir,subdirname,O_READ))
        {
          SERIAL_PROTOCOLPGM("open failed, File: ");
          SERIAL_PROTOCOL(subdirname);
          SERIAL_PROTOCOLLNPGM(".");
          return;
        }
        else
          ;//SERIAL_ECHOLN("dive ok");
          
        curDir=&myDir; 
        dirname_start=dirname_end+1;
      }
      else // the reminder after all /fsa/fdsa/ is the filename
      {
        fname=dirname_start;
        //SERIAL_ECHOLN("remaider");
        //SERIAL_ECHOLN(fname);
        break;
      }
      
    }
  }
  else //relative path
  {
    curDir=&workDir;
  }
  if(read)
  {
    if (file.open(curDir, fname, O_READ)) 
    {
      filesize = file.fileSize();
      SERIAL_PROTOCOLPGM("File opened:");
      SERIAL_PROTOCOL(fname);
      SERIAL_PROTOCOLPGM(" Size:");
      SERIAL_PROTOCOLLN(filesize);
      sdpos = 0;
      
      SERIAL_PROTOCOLLNPGM("File selected");
      LCD_MESSAGE(fname);
    }
    else
    {
      SERIAL_PROTOCOLPGM("open failed, File: ");
      SERIAL_PROTOCOL(fname);
      SERIAL_PROTOCOLLNPGM(".");
    }
  }
  else 
  { //write
    if (!file.open(curDir, fname, O_CREAT | O_APPEND | O_WRITE | O_TRUNC))
    {
      SERIAL_PROTOCOLPGM("open failed, File: ");
      SERIAL_PROTOCOL(fname);
      SERIAL_PROTOCOLLNPGM(".");
    }
    else
    {
      saving = true;
      SERIAL_PROTOCOLPGM("Writing to file: ");
      SERIAL_PROTOCOLLN(name);
      LCD_MESSAGE(fname);
    }
  }
  
}

void CardReader::getStatus()
{
  if(cardOK){
    SERIAL_PROTOCOLPGM("SD printing byte ");
    SERIAL_PROTOCOL(sdpos);
    SERIAL_PROTOCOLPGM("/");
    SERIAL_PROTOCOLLN(filesize);
  }
  else{
    SERIAL_PROTOCOLLNPGM("Not SD printing");
  }
}
void CardReader::write_command(char *buf)
{
  char* begin = buf;
  char* npos = 0;
  char* end = buf + strlen(buf) - 1;

  file.writeError = false;
  if((npos = strchr(buf, 'N')) != NULL)
  {
    begin = strchr(npos, ' ') + 1;
    end = strchr(npos, '*') - 1;
  }
  end[1] = '\r';
  end[2] = '\n';
  end[3] = '\0';
  file.write(begin);
  if (file.writeError)
  {
    SERIAL_ERROR_START;
    SERIAL_ERRORLNPGM("error writing to file");
  }
}


void CardReader::checkautostart(bool force)
{
  if(!force)
  {
    if(!autostart_stilltocheck)
      return;
    if(autostart_atmillis<millis())
      return;
  }
  autostart_stilltocheck=false;
  if(!cardOK)
  {
    initsd();
    if(!cardOK) //fail
      return;
  }
  static int lastnr=0;
  char autoname[30];
  sprintf(autoname,"auto%i.g",lastnr);
  for(int8_t i=0;i<(int)strlen(autoname);i++)
    autoname[i]=tolower(autoname[i]);
  dir_t p;

  root.rewind();
  
  bool found=false;
  while (root.readDir(p) > 0) 
  {
    for(int8_t i=0;i<(int)strlen((char*)p.name);i++)
    p.name[i]=tolower(p.name[i]);
    //Serial.print((char*)p.name);
    //Serial.print(" ");
    //Serial.println(autoname);
    if(p.name[9]!='~') //skip safety copies
    if(strncmp((char*)p.name,autoname,5)==0)
    {
      char cmd[30];

      sprintf(cmd,"M23 %s",autoname);
      enquecommand(cmd);
      enquecommand("M24");
      found=true;
    }
  }
  if(!found)
    lastnr=-1;
  else
    lastnr++;
}

void CardReader::closefile()
{
  file.sync();
  file.close();
  saving = false; 
}

void CardReader::getfilename(const uint8_t nr)
{
  curDir=&workDir;
  lsAction=LS_GetFilename;
  nrFiles=nr;
  curDir->rewind();
  lsDive("",*curDir);
  
}

uint16_t CardReader::getnrfilenames()
{
  curDir=&workDir;
  lsAction=LS_Count;
  nrFiles=0;
  curDir->rewind();
  lsDive("",*curDir);
  //SERIAL_ECHOLN(nrFiles);
  return nrFiles;
}

void CardReader::chdir(const char * relpath)
{
  SdFile newfile;
  SdFile *parent=&root;
  
  if(workDir.isOpen())
    parent=&workDir;
  
  if(!newfile.open(*parent,relpath, O_READ))
  {
   SERIAL_ECHO_START;
   SERIAL_ECHOPGM("Cannot enter subdir:");
   SERIAL_ECHOLN(relpath);
  }
  else
  {
    workDirParentParent=workDirParent;
    workDirParent=*parent;
    
    workDir=newfile;
  }
}

void CardReader::updir()
{
  if(!workDir.isRoot())
  {
    workDir=workDirParent;
    workDirParent=workDirParentParent;
  }
}


void CardReader::printingHasFinished()
{
 sdprinting = false;
 if(SD_FINISHED_STEPPERRELEASE)
 {
   finishAndDisableSteppers();
 }
}
#endif //SDSUPPORT