#!/bin/bash

#####################################################################
# ks-upa (ks-tools) - Upload audio file(s) to server with rsync+ssh #
# Date: 26-03-2021                                                  #
# Author: q3aql                                                     #
# Contact: q3aql@protonmail.ch                                      #
#####################################################################
VERSION="7.1"
M_DATE="260321"

# Global parameters.
dirTemp="/tmp"
listCompTemp="ks-tools.list-full"
listCompTempTest="ks-tools.list-full.test"
listTemp="ks-tools.list"
dirConfig="$HOME/.ks-tools"
ksToolsTempFolder="/tmp/ks-tools"

# Check cygwin alias (for Windows)
if [ -f "/usr/bin/cygwin-alias.sh" ] ; then
  shopt -s expand_aliases
  source "/usr/bin/cygwin-alias.sh"
fi

# Function to remove spaces and symbols
# Syntax: convertText "<text>"
function convertText() {
  wordToConvert=${1}
  ksToolsSedFile="${ksToolsTempFolder}/ks-tools-${RANDOM}.txt"
  mkdir -p ${ksToolsTempFolder} && chmod 777 -R ${ksToolsTempFolder} 2> /dev/null
  echo "${wordToConvert}" > ${ksToolsSedFile}
  # Borrar espacios
  sed -i 's/ /_/g' "${ksToolsSedFile}" &> /dev/null
  # Borrar simbolos
  symbolsList="[ ] @ { } | \ / ~ # $ % & ? ¿ = ( ) < > ! ¡"
  for findSymbol in ${symbolsList} ; do
    sed -i "s/${findSymbol}//g" "${ksToolsSedFile}" &> /dev/null
  done
  # Borrar el resto de simbolos
  sed -i 's/*//g' "${ksToolsSedFile}" &> /dev/null
  sed -i 's/"//g' "${ksToolsSedFile}" &> /dev/null
  sed -i "s/^//g" "${ksToolsSedFile}" &> /dev/null
  # Cambiar algunos simbolos
  sed -i 's/+/_/g' "${ksToolsSedFile}" &> /dev/null
  sed -i 's/:/-/g' "${ksToolsSedFile}" &> /dev/null
  sed -i 's/;/-/g' "${ksToolsSedFile}" &> /dev/null
  # Mostrar texto convertido
  wordToConvert=$(cat ${ksToolsSedFile})
  echo ${wordToConvert}
}

# Function to list the files of a directory.
# Syntax: listArchives <directory>
function listArchives() {
  fail=1
  formatFiles="mp3 wma ogg wav flac midi acc oga opus mp2 ra m4a mka"
  # Rename files
  cd "${1}"
  mkdir -p ${ksToolsTempFolder}
  ls -1 > ${ksToolsTempFolder}/rename-files.txt
  count=1
  sizeFile=$(cat ${ksToolsTempFolder}/rename-files.txt | wc -l)
  while [ ${count} -le ${sizeFile} ] ; do
    fileToRename=$(cat ${ksToolsTempFolder}/rename-files.txt | head -${count} | tail -1)
    fileRenamed=$(convertText "${fileToRename}")
    if [ "${fileRenamed}" == "${fileToRename}" ] ; then
      echo "null" > /dev/null
    else
      mv "${fileToRename}" "${fileRenamed}"
    fi
    count=$(expr $count + 1)
  done
  # Scan audio files
  rm -rf ${dirTemp}/${listTemp}
  rm -rf ${dirTemp}/${listCompTemp}
  for format in ${formatFiles} ; do
    find "${1}"/*.${format} &> ${dirTemp}/${listCompTempTest}
    if [ $? -ne 0 ] ; then
      echo "null" > /dev/null
    else
      find "${1}"/*.${format} &>> ${dirTemp}/${listCompTemp}
      echo "+ Audio file(s) in .${format} found!"
      cd "${1}" && ls -1 *.${format} &>> ${dirTemp}/${listTemp}
      fail=0
    fi
  done
  if [ ${fail} -eq 1 ] ; then
    echo "+ No audio file(s) found!"
    echo ""
    exit
  else
    echo ""
  fi
}

# Function to count the found files.
function countArchives() {
  totalArchives=$(cat ${dirTemp}/${listCompTemp} | wc -l)
  echo ${totalArchives}
}

# Function to show files with spaces.
# Syntax: showFileWithSpace <file number>
function showFileWithSpace() {
  FileName=$(cat ${dirTemp}/${listTemp} | head -${1} | tail -1)
  FileNoExtension=$(echo $FileName | cut -d "." -f 1)
  echo $FileNoExtension > ${dirTemp}/name.tmp
  sed -i 's/_/ /g' ${dirTemp}/name.tmp
  DisplayName=$(cat ${dirTemp}/name.tmp)
  rm -rf ${dirTemp}/name.tmp
  echo ${DisplayName}
}

# Function to show the name of the file.
# Syntax: showFile <file number>
function showFile() {
  archive=$(cat ${dirTemp}/${listTemp} | head -${1} | tail -1)
  echo ${archive}
}

# Function to show full file path.
# Syntax: showPathFile <file number>
function showPathFile() {
  pathFile=$(cat ${dirTemp}/${listCompTemp} | head -${1} | tail -1)
  echo ${pathFile}
}

# Function to send file to server.
# Syntax: sendFile <password> <file path> <user> <server> <server path> [file name]
function sendFile() {
  correct=0
  countSend=0
  while [ ${correct} -eq 0 ] ; do
    #sshpass -p ${1} scp ${2} ${3}@${4}:${5} &> /dev/null
    comandOne="sshpass -p ${1} rsync -azL -e"
    comandTwo="--progress ${2} ${3}@${4}:${5}"
    ${comandOne} "ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null" ${comandTwo} 2> /dev/null
    sshpass -p ${1} ssh ${3}@${4} rm -rf ${5}/.${6}.* &> /dev/null
    OUTPUT=$?
    if [ ${OUTPUT} -ne 0 ] ; then
      echo "Failure to send ${2}"
      echo "Retrying..."
      sshpass -p ${1} ssh ${3}@${4} rm -rf ${5}/.${6}.* &> /dev/null
      sleep 5
      countSend=$(expr ${countSend} + 1)
      if [ ${countSend} -eq 5 ] ; then
        correct=1
      fi
    else
      correct=1
    fi
  done
}

# Function to check local and server checksum.
# Syntax: checkChecksum <password> <local file path> <user> <server> <server file path>
function checkChecksum() {
  correct=0
  countChecksum=0
  echo -n "Checking checksum... " && sleep 4
  echo ""
  while [ ${correct} -eq 0 ] ; do
    checksumServer=$(sshpass -p ${1} ssh ${3}@${4} md5sum ${5} 2> /dev/null)
    OUTPUT=$?
    if [ ${OUTPUT} -ne 0 ] ; then
      echo "Failed to get checksum for ${5}"
      echo "Retrying..."
      sleep 5
      countChecksum=$(expr ${countChecksum} + 1)
      if [ ${countChecksum} -eq 5 ] ; then
        correct=1
      fi
    else
      checksumLocal=$(md5sum ${2})
      echo "Local checksum: $checksumLocal"
      echo "Server checksum: $checksumServer"
      correct=1
    fi
  done
}

# Function to show config
function showConfig() {
  configAvailable=0
  echo ""
  echo "* ks-upa (ks-tools) v${VERSION} (${M_DATE})"
  echo ""
  if [ -f ${dirConfig}/USER ] ; then
    showUser=$(cat ${dirConfig}/USER)
    echo "- Server User: ${showUser}"
    configAvailable=1
  fi
  if [ -f ${dirConfig}/PASS ] ; then
    showPassword=$(cat ${dirConfig}/PASS)
    echo "- Server Password: ${showPassword}"
    configAvailable=1
  fi
  if [ -f ${dirConfig}/SERVER ] ; then
    showServer=$(cat ${dirConfig}/SERVER)
    echo "- URL (or IP) Server: ${showServer}"
    configAvailable=1
  fi
  if [ -f ${dirConfig}/DIR_SERVER ] ; then
    showDirServer=$(cat ${dirConfig}/DIR_SERVER)
    echo "- Destination Path (Server): ${showDirServer}"
    configAvailable=1
  fi
  if [ -f ${dirConfig}/DIR ] ; then
    showDirLocal=$(cat ${dirConfig}/DIR)
    echo "- Scan Path (Local): ${showDirLocal}"
    configAvailable=1
  fi
  if [ ${configAvailable} -eq 0 ] ; then
    echo "* The configuration file does not exist!"
  fi
  echo ""
  exit
}

# Function to edit the configuration file
function editConfig() {
  editConfig=0
  while [ ${editConfig} -eq 0 ] ; do
    clear
    editUser=$(cat ${dirConfig}/USER 2> /dev/null)
    editPassword=$(cat ${dirConfig}/PASS 2> /dev/null)
    editServer=$(cat ${dirConfig}/SERVER 2> /dev/null)
    editDirServer=$(cat ${dirConfig}/DIR_SERVER 2> /dev/null)
    editDirLocal=$(cat ${dirConfig}/DIR 2> /dev/null)
    echo ""
    echo "* ks-upa (ks-tools) v${VERSION} (${M_DATE})"
    echo ""
    echo " 1 - Edit User (${editUser})"
    echo " 2 - Edit Password (${editPassword})"
    echo " 3 - Edit Server (${editServer})"
    echo " 4 - Edit Dest. Path (${editDirServer})"
    echo " 5 - Edit Local Path (${editDirLocal})"
    echo ""
    echo " 6 - Exit"
    echo ""
    echo -n "* Choose an option: " ; read EDIT
    echo ""
    if [ "${EDIT}" == "1" ] ; then
      echo -n "* Enter the server user: " ; read USER
      user=${USER}
      echo ${user} > ${dirConfig}/USER
    elif [ "${EDIT}" == "2" ] ; then
      echo -n "* Enter the server key: " ; read PASS
      password=${PASS}
      echo ${password} > ${dirConfig}/PASS
    elif [ "${EDIT}" == "3" ] ; then
      echo -n "* Enter the server URL: " ; read SERVER
      server=${SERVER}
      echo ${server} > ${dirConfig}/SERVER
    elif [ "${EDIT}" == "4" ] ; then
      echo -n "* Enter the path on the server: " ; read DIR_SERVER
      dirServer=${DIR_SERVER}
      echo ${dirServer} > ${dirConfig}/DIR_SERVER
    elif [ "${EDIT}" == "5" ] ; then
      echo -n "* Enter the local path to scan: " ; read DIR
      dirLocal=${DIR}
      echo ${dirLocal} > ${dirConfig}/DIR
    elif [ "${EDIT}" == "6" ] ; then
      editConfig=1
    else
      echo "+ Invalid option!"
      echo -n "- Press ENTER to continue " ; read CONTINUE
    fi
  done
  exit
}

# Function to show version
function showVersion() {
  echo ""
  echo "* ks-upa (ks-tools) v${VERSION} (${M_DATE})"
  echo ""
  exit
}

# Function to show help
function showHelp() {
  echo ""
  echo "* ks-upa (ks-tools) v${VERSION} (${M_DATE})"
  echo ""
  echo "- Upload audio file(s) to server with rsync+ssh"
  echo ""
  echo "+ Syntax:"
  echo ""
  echo " $ ks-upa -i  - Start upload"
  echo " $ ks-upa -r  - Remove configuration"
  echo " $ ks-upa -c  - Show configuration"
  echo " $ ks-upa -e  - Edit configuration"
  echo " $ ks-upa -v  - Show version"
  echo " $ ks-upa -h  - Show help"
  echo ""
  exit
}

# Function to check if all the necessary tools
# for the execution are installed.
function checkDependencies() {
  dependence=0
  echo -n "* Checking necessary tools... "
  sleep 3 && echo ""
  sshpass -h &> /dev/null
  OUTPUT=$?
  if [ ${OUTPUT} -ne 0 ] ; then
    echo "* The 'sshpass' tool is not installed!"
    dependence=1
  fi
  md5sum --help &> /dev/null
  OUTPUT=$?
  if [ ${OUTPUT} -ne 0 ] ; then
    echo "* The 'md5sum' tool is not installed!"
    dependence=1
  fi
  rsync --version &> /dev/null
  OUTPUT=$?
  if [ ${OUTPUT} -ne 0 ] ; then
    echo "* The 'rsync' tool is not installed!"
    dependence=1
  fi
  if [ -f /usr/bin/scp ] ; then
    echo "OK" > /dev/null
  else
    echo "* The 'scp' tool is not installed!"
    dependence=1
  fi
  if [ -f /usr/bin/ssh ] ; then
    echo "OK" > /dev/null
  else
    echo "* The 'ssh' tool is not installed!"
    dependence=1
  fi
  if [ ${dependence} -eq 0 ] ; then
    echo "* Necessary tools installed!"
    echo ""
  else
    echo ""
    exit
  fi
}

# Check if the configuration directory exists.
if [ -d ${dirConfig} ] ; then
  echo ${dirConfig} > /dev/null
else
  mkdir -p ${dirConfig}
fi

# Delete the existing configuration.
if [ "$1" == "-r" ] ; then
  rm -rf ${dirConfig}/USER
  rm -rf ${dirConfig}/PASS
  rm -rf ${dirConfig}/SERVER
  rm -rf ${dirConfig}/DIR_SERVER
  rm -rf ${dirConfig}/DIR
  exit
fi

# Show configuration file
if [ "$1" == "-c" ] ; then
  showConfig
  # Show configuration file
elif [ "$1" == "-e" ] ; then
  editConfig
  # Show the version
elif [ "$1" == "-v" ] ; then
  showVersion
  # Show the help
elif [ "$1" == "-h" ] ; then
  showHelp
  # Init
elif [ "$1" == "-i" ] ; then
  # Start script
  clear
  echo ""
  echo "* ks-upa (ks-tools) v${VERSION} (${M_DATE})"
  echo ""
  checkDependencies
  # Ask the user and if it exists, read it from the config.
  if [ -f ${dirConfig}/USER ] ; then
    user=$(cat ${dirConfig}/USER)
  else
    echo -n "* Enter the server user: " ; read USER
    user=${USER}
    echo ${user} > ${dirConfig}/USER
  fi
  # Ask the password and if it exists, read it from the config.
  if [ -f ${dirConfig}/PASS ] ; then
    password=$(cat ${dirConfig}/PASS)
  else
    echo -n "* Enter the server key: " ; read PASS
    password=${PASS}
    echo ${password} > ${dirConfig}/PASS
  fi
  # Ask the server URL and if it exists, read it from the config.
  if [ -f ${dirConfig}/SERVER ] ; then
    server=$(cat ${dirConfig}/SERVER)
  else
    echo -n "* Enter the server URL: " ; read SERVER
    server=${SERVER}
    echo ${server} > ${dirConfig}/SERVER
  fi
  # Ask the path on the server and if it exists, read it from the config.
  if [ -f ${dirConfig}/DIR_SERVER ] ; then
    dirServer=$(cat ${dirConfig}/DIR_SERVER)
  else
    echo -n "* Enter the path on the server: " ; read DIR_SERVER
    dirServer=${DIR_SERVER}
    echo ${dirServer} > ${dirConfig}/DIR_SERVER
  fi
  # Ask the local path and if it exists, read it from the config.
  if [ -f ${dirConfig}/DIR ] ; then
    dirLocal=$(cat ${dirConfig}/DIR)
  else
    echo -n "* Enter the local path to scan: " ; read DIR
    dirLocal=${DIR}
    echo ${dirLocal} > ${dirConfig}/DIR
  fi

  # Call the functions to perform the whole process.
  echo -n "* Scanning ${dirLocal} " && sleep 4
  echo ""
  if [ -d ${dirLocal} ] ; then
    listArchives "${dirLocal}"
    totalFiles=$(countArchives)
    count=1
    echo "+ ${totalFiles} audio file(s) found!"
    echo ""
    while [ ${count} -le ${totalFiles} ] ; do
      fullNameFile=$(showFile ${count})
      fullPathFile=$(showPathFile ${count})
      echo "Uploading '${fullNameFile}' "
      sendFile ${password} ${fullPathFile} ${user} ${server} ${dirServer} ${fullNameFile}
      checkChecksum ${password} ${fullPathFile} ${user} ${server} ${dirServer}/${fullNameFile}
      echo ""
      count=$(expr ${count} + 1)
    done
  else
    echo "* Directory ${dirLocal} does not exist!"
    echo ""
    exit
  fi
  # Show help
else
  showHelp
fi