#!/bin/bash
#*******************************************************************************
# Encoder binary comparison test model
#       -- Compared with benchmark version using SHA-1 string
#       -- Test bit stream under folder  openh264/res
#       -- SHA-1 string of benchmark version for  all cases  of all bit streams
#           under folder  openh264/test/encoder_binary_comparion/SHA1Table
#       -- For more detail,please refer to file AboutTest.
#
#brief:
#       -- Usage: ./run_SafeDelere.sh  $DeleteItermPath
#            eg:    1  ./run_SafeDelere.sh  tempdata.info        --->delete only one file
#            eg:    2  ./run_SafeDelere.sh  ../TempDataFolder    --->delete entire folder
#                      ./run_SafeDelere.sh  /opt/TempData/ABC    --->delete entire folder ABC
#
# date:  10/06/2014 Created
#*******************************************************************************
#usage: runGetFileName  $FilePath
runGetFileName()
{
  #parameter check!
  if [ ! $# -eq 1  ]
  then
    echo "usage: runGetFileName  \$FilePath"
    return 1
   fi

   local PathInfo=$1
   local FileName=""

  if [[  $PathInfo  =~ ^"/"  ]]
   then
    FileName=` echo ${PathInfo} | awk 'BEGIN {FS="/"}; {print $NF}'`
    echo "${FileName}"
    return 0
   elif [[  $PathInfo  =~ ^".."  ]]
   then
    FileName=` echo ${PathInfo} | awk 'BEGIN {FS="/"}; {print $NF}'`
    echo "${FileName}"
    return 0
   else
    FileName=${PathInfo}
    echo "${FileName}"
    return 0
   fi

}
#******************************************************************************************************
#usage:  runGetFileFullPath  $FilePathInfo
#eg:  current path is /opt/VideoTest/openh264/ABC
#     runGetFileFullPath  abc.txt                  --->/opt/VideoTest/openh264/ABC
#     runGetFileFullPath  ../123.txt               --->/opt/VideoTest/openh264
#     runGetFileFullPath  /opt/VieoTest/456.txt    --->/opt/VieoTest
runGetFileFullPath()
{
  #parameter check!
  if [ ! $# -eq 1  ]
  then
    echo "usage:  runGetFileFullPath  \$FilePathInfo "
    return 1
   fi

   local PathInfo=$1
   local FullPath=""
   local CurrentDir=`pwd`

   if [[  $PathInfo  =~ ^"/"  ]]
   then
    FullPath=`echo ${PathInfo} |awk 'BEGIN {FS="/"} {for (i=1;i<NF;i++) printf("%s/",$i)}'`
    cd ${FullPath}
    FullPath=`pwd`
    cd ${CurrentDir}
    echo "${FullPath}"
    return 0
   elif [[  $PathInfo  =~ ^".."  ]]
   then
    FullPath=`echo ${PathInfo} |awk 'BEGIN {FS="/"} {for (i=1;i<NF;i++) printf("%s/",$i)}'`
    cd ${FullPath}
    FullPath=`pwd`
    cd ${CurrentDir}
    echo "${FullPath}"
    return 0
   else
    FullPath=${CurrentDir}
    echo "${FullPath}"
    return 0
   fi
}
#******************************************************************************************************
#usage:  runGetFolderFullPath  $FolderPathInfo
#eg:  current path is /opt/VideoTest/openh264/ABC
#     runGetFolderFullPat   SubFolder             --->/opt/VideoTest/openh264/ABC/ SubFolder
#     runGetFolderFullPat  ../EFG              --->/opt/VideoTest/openh264/EFG
#     runGetFolderFullPat  /opt/VieoTest/MyFolder    --->/opt/VieoTest/MyFolder
runGetFolderFullPath()
{
  #parameter check!
  if [ ! $# -eq 1  ]
  then
    echo "usage:  runGetFolderFullPath  \$FolderPathInfo  "
    return 1
   fi

   local PathInfo=$1
   local FullPath=""
   local CurrentDir=`pwd`

   if [[  $PathInfo  =~ ^"/"  ]]
   then
    FullPath=${PathInfo}
    cd ${FullPath}
    FullPath=`pwd`
    cd ${CurrentDir}
    echo "${FullPath}"
    return 0
   elif [[  $PathInfo  =~ ^".."  ]]
   then
    cd ${PathInfo}
    FullPath=`pwd`
    cd ${CurrentDir}
    echo "${FullPath}"
    return 0
   else
    FullPath="${CurrentDir}/${PathInfo}"
    cd ${FullPath}
    FullPath=`pwd`
    cd ${CurrentDir}
    echo "${FullPath}"
    return 0
   fi

}
#******************************************************************************************************
#usage: runUserNameCheck  $whoami
runUserNameCheck()
{
  #parameter check!
  if [ ! $# -eq 1  ]
  then
    echo "usage: runUserNameCheck  \$whoami"
    return 1
   fi

  local UserName=$1

  if [  ${UserName} = "root"  ]
  then
    echo ""
    echo "*********************************************"
    echo "delete files under root is not allowed"
    echo "detected by run_SafeDelere.sh"
    return 1
  else
    echo ""
    return 0
  fi
}
#******************************************************************************************************
#usage:  runFolderLocationCheck  $FullPath
runFolderLocationCheck()
{
  #parameter check!
  if [ ! $# -eq 1  ]
  then
    echo "usage:  runFolderLocationCheck  \$FullPath"
    return 1
   fi

  local Location=$1
  local FileDirDepth=`echo ${Location} | awk 'BEGIN {FS="/"} {print NF}'`

  #for other non-project folder data protection
  #eg /opt/VideoTest/DeletedItem depth=4
  if [  $FileDirDepth -lt 5 ]
  then
    echo ""
    echo "*********************************************"
    echo "FileDepth is  $FileDirDepth, and it is less thab the minimum depth(5)"
    echo "unsafe delete! try to delete non-project related files: $FileDir"
    echo "detected by run_SafeDelere.sh"
    return 1
  fi

  return 0
}
#******************************************************************************************************
#usage runSafeDelete $Pathinfo
runSafeDelete()
{
  #parameter check!
  if [ ! $# -eq 1  ]
  then
    echo "usage runSafeDelete \FileFullPath"
    return 1
   fi

  local PathInfo=$1
  local UserName=`whoami`
  local FullPath=""
  local DeleteIterm=""
  local FileName=""

  #user validity check
  runUserNameCheck  ${UserName}
  if [ ! $? -eq 0 ]
  then
    return 1
  fi

  #get full path
  if [  -d $PathInfo  ]
  then
    FullPath=`runGetFolderFullPath  ${PathInfo} `
  elif [ -f $PathInfo ]
  then
    FullPath=`runGetFileFullPath  ${PathInfo} `
  else
    echo "delete iterm does not exist"
    echo "detected by run_SafeDelere.sh"
    return 1
  fi

  #location  validity check
  runFolderLocationCheck ${FullPath}
  if [ ! $? -eq 0 ]
  then
    return 1
  fi

  #delete file/folder
  if [  -d $PathInfo  ]
  then
    DeleteIterm=${FullPath}
    echo "deleted folder is:  $DeleteIterm"
    rm -rf ${DeleteIterm}
  elif [ -f $PathInfo ]
  then
    FileName=`runGetFileName ${PathInfo}`
    DeleteIterm="${FullPath}/${FileName}"
    echo "deleted file is:  $DeleteIterm"
    rm  ${DeleteIterm}
  fi
  echo ""

}
PathInfo=$1
runSafeDelete $PathInfo