#!/bin/bash

###############################################################
# ks-mp4k-wrapper (ks-tools) - Wrapper for ks-mp4k            #
# Date: 23-03-2021                                            #
# Author: q3aql                                               #
# Contact: q3aql@protonmail.ch                                #
###############################################################
VERSION="6.9"
M_DATE="230321"

# Conversion parameters
ks_mp4_to_wrap="/usr/bin/ks-mp4k"
p_ffmpeg="ffmpeg -i"
p_ffmpeg_patched="-max_muxing_queue_size 9999"
rel_size="3840x2160"

# Global parameters
dirTemp="/tmp"
listTemp="ks-tools.list"
ksToolsTempFolder="/tmp/ks-tools"

# Check if ffmpeg is installed
ffmpeg_test=$(ffmpeg --help 2>&1)
error_ffmpeg=$?
if [ ${error_ffmpeg} -ne 0 ] ; then
  echo ""
  echo "* ks-mp4k-wrapper (ks-tools) v${VERSION} (${M_DATE})"
  echo ""
  echo "+ The 'ffmpeg' tool is not installed!"
  echo ""
  exit
fi

# Check if ks-mp4k is installed
if [ -f ${ks_mp4_to_wrap} ] ; then
  echo "ks-mp4k detected" > /dev/null
else
  echo ""
  echo "* ks-mp4k-wrapper (ks-tools) v${VERSION} (${M_DATE})"
  echo ""
  echo "+ The 'ks-mp4k' tool is not installed!"
  echo ""
  exit
fi

# Funcion to show the name of file/folder from full path
# Syntax: extractFolderOrFile <full/path/file.txt>
function extractFolderOrFile() {
  pathToExtract="${1}/"
  findFolder=0
  count=1
  nameFolder=$(echo ${pathToExtract} | cut -d "/" -f ${count})
  count=$(expr $count + 1)
  while [ ${findFolder} -eq 0 ] ; do
    nameFolderTemp=$(echo ${pathToExtract} | cut -d "/" -f ${count})
    if [ -z "${nameFolderTemp}" ] ; then
      findFolder=1
    else
      nameFolder="${nameFolderTemp}"
      count=$(expr $count + 1)
    fi
  done
  echo "${nameFolder}"
}

# Function to remove extension from file
# Syntax: removeExtension "<text>"
function removeExtension() {
  wordToConvert=${1}
  ksToolsSedFile="${ksToolsTempFolder}/ks-tools-${RANDOM}.txt"
  mkdir -p ${ksToolsTempFolder} && chmod 777 -R ${ksToolsTempFolder} 2> /dev/null
  echo "${wordToConvert}" > ${ksToolsSedFile}
  # Remove extensions
  sed -i 's/.avi//g' "${ksToolsSedFile}" &> /dev/null
  sed -i 's/.mp4//g' "${ksToolsSedFile}" &> /dev/null
  sed -i 's/.mkv//g' "${ksToolsSedFile}" &> /dev/null
  sed -i "s/.mov//g" "${ksToolsSedFile}" &> /dev/null
  sed -i 's/.vob//g' "${ksToolsSedFile}" &> /dev/null
  sed -i 's/.mpg//g' "${ksToolsSedFile}" &> /dev/null
  sed -i 's/.mpeg//g' "${ksToolsSedFile}" &> /dev/null
  sed -i 's/.wmv//g' "${ksToolsSedFile}" &> /dev/null
  sed -i 's/.ogv//g' "${ksToolsSedFile}" &> /dev/null
  sed -i 's/.webm//g' "${ksToolsSedFile}" &> /dev/null
  sed -i 's/.flv/g' "${ksToolsSedFile}" &> /dev/null
  # Show file without extension
  wordToConvert=$(cat ${ksToolsSedFile})
  echo ${wordToConvert}
}

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

# Show info tracks of input video video file.
# Syntax: showInfo <video_file>
function showInfo() {
  echo ""
  echo "* Information of ${1}:"
  echo ""
  echo "+ Video Tracks:"
  ${p_ffmpeg} "${1}" 2>&1 | grep Stream | tr -s " " | grep "Video:" | cut -d "," -f 1
  echo ""
  echo "+ Audio Tracks:"
  ${p_ffmpeg} "${1}" 2>&1 | grep Stream | tr -s " " | grep "Audio:" | cut -d "," -f 1
  echo ""
  echo "+ Subtitle Tracks:"
  ${p_ffmpeg} "${1}" 2>&1 | grep Stream | tr -s " " | grep "Subtitle:" | cut -d "," -f 1
  echo ""
  exit
}

# Show the video track default
# Syntax: showVideoDefault <video_file>
function showVideoDefault() {
  # Check de video track by default
  video_default=$(${p_ffmpeg} "${1}" 2>&1 | grep Stream | tr -s " " | grep "Video:" | cut -d " " -f 3 | cut -c2-5 | cut -d "(" -f 1 | head -1)
  if [ -z "${video_default}" ] ; then
    video_default="0:0"
  else
    video_default_patch=$(echo ${video_default} | cut -c4)
    if [ "${video_default_patch}" == ":" ] ; then
      video_default=$(echo ${video_default} | cut -c1-3)
    else
      video_default="${video_default}"
    fi
  fi
  echo "${video_default}"
}

# Show the audio track default
# Syntax: showAudioDefault <video_file>
function showAudioDefault() {
  # Check the audio track by default
  audio_default=$(${p_ffmpeg} "${1}" 2>&1 | grep Stream | tr -s " " | grep "Audio:" | grep "(${default_lang_audio})" | cut -d " " -f 3 | cut -c2-5 | cut -d "(" -f 1 | head -1)
  if [ -z "${audio_default}" ] ; then
    audio_default=$(${p_ffmpeg} "${1}" 2>&1 | grep Stream | tr -s " " | grep "Audio:" | cut -d " " -f 3 | cut -c2-5 | cut -d "(" -f 1 | head -1)
    if [ -z "${audio_default}" ] ; then
      audio_default="0:1"
    else
      audio_default_patch=$(echo ${audio_default} | cut -c4)
      if [ "${audio_default_patch}" == ":" ] ; then
        audio_default=$(echo ${audio_default} | cut -c1-3)
      else
        audio_default="${audio_default}"
      fi
    fi
  else
    audio_default_patch=$(echo ${audio_default} | cut -c4)
    if [ "${audio_default_patch}" == ":" ] ; then
      audio_default=$(echo ${audio_default} | cut -c1-3)
    else
      audio_default="${audio_default}"
    fi
  fi
  echo "${audio_default}"
}

# Show the subtitle track default
# Syntax: showSubtitleDefault <video_file>
function showSubtitleDefault() {
  # Check the subtitle track by default
  subtitle_default=$(${p_ffmpeg} "${1}" 2>&1 | grep Stream | tr -s " " | grep "Subtitle:" | grep "(${default_lang_subt})" | grep "(forced)" | cut -d " " -f 3 | cut -c2-5 | cut -d "(" -f 1 | head -1)
  if [ -z "${subtitle_default}" ] ; then
    subtitle_default=$(${p_ffmpeg} "${1}" 2>&1 | grep Stream | tr -s " " | grep "Subtitle:" | grep "(${default_lang_subt})" | cut -d " " -f 3 | cut -c2-5 | cut -d "(" -f 1 | head -1)
    if [ -z "${subtitle_default}" ] ; then
      subtitle_default=$(${p_ffmpeg} "${1}" 2>&1 | grep Stream | tr -s " " | grep "Subtitle:" | cut -d " " -f 3 | cut -c2-5 | cut -d "(" -f 1 | head -1)
      if [ -z "${subtitle_default}" ] ; then
        subtitle_default="0:3"
      else
        subtitle_default_patch=$(echo ${subtitle_default} | cut -c4)
        if [ "${subtitle_default_patch}" == ":" ] ; then
          subtitle_default=$(echo ${subtitle_default} | cut -c1-3)
        else
          subtitle_default="${subtitle_default}"
        fi
      fi
    else
      subtitle_default_patch=$(echo ${subtitle_default} | cut -c4)
      if [ "${subtitle_default_patch}" == ":" ] ; then
        subtitle_default=$(echo ${subtitle_default} | cut -c1-3)
      else
        subtitle_default="${subtitle_default}"
      fi
    fi
  else
    subtitle_default_patch=$(echo ${subtitle_default} | cut -c4)
    if [ "${subtitle_default_patch}" == ":" ] ; then
      subtitle_default=$(echo ${subtitle_default} | cut -c1-3)
    else
      subtitle_default="${subtitle_default}"
    fi
  fi
  echo "${subtitle_default}"
}

# Show default resolution
# Syntax: showResolutionDefault
function showResolutionDefault() {
  echo "${rel_size}"
}

# Show default year (METADATA)
# Syntax: showResolutionDefault
function showYearDefault() {
  current_date=$(date +%Y)
  echo "${current_date}"
}

# Show the name title default (MEDATA)
# Syntax: showNameDefault <video_file>
function showNameDefault() {
  # Prepare name title by default
  FullPath="${1}"
  name_title_default=$(extractFolderOrFile "${FullPath}")
  name_title_default=$(removeExtension "${name_title_default}")
  name_title_default=$(showFileWithSpace "${name_title_default}")
  echo "${name_title_default}"
}

# Show the genre default (MEDATA)
# Syntax: showGenreDefault
function showGenreDefault() {
  echo "Unknown"
}

# Show help
function showHelp() {
  echo ""
  echo "* ks-mp4k-wrapper (ks-tools) v${VERSION} (${M_DATE})"
  echo ""
  echo "- Wrapper for ks-mp4k to create graphical interfaces"
  echo ""
  echo "+ Syntax:"
  echo ""
  echo " * TRACKS/CONFIG DETECT:"
  echo ""
  echo "  $ ks-mp4k-wrapper --show-info <video_file>"
  echo "  $ ks-mp4k-wrapper --show-video-default <video_file>"
  echo "  $ ks-mp4k-wrapper --show-audio-default <video_file>"
  echo "  $ ks-mp4k-wrapper --show-subtitle-default <video_file>"
  echo "  $ ks-mp4k-wrapper --show-resolution-default"
  echo ""
  echo " * METADATA DETECT:"
  echo ""
  echo "  $ ks-mp4k-wrapper --show-name-title-default <video_file>"
  echo "  $ ks-mp4k-wrapper --show-year-default"
  echo "  $ ks-mp4k-wrapper --show-genre-default"
  echo ""
  echo " * CONVERT:"
  echo ""
  echo " $ ks-mp4k-wrapper --conv </path/video_file> </path/output_prefix> <video-track> <audio-track> <resolution> \"<name-title>\" <year> \"<genre>\" [patch]"
  echo " $ ks-mp4k-wrapper --conv-with-sub </path/video_file> </path/output_prefix> <video-track> <audio-track> <subs-track> <resolution> \"<name-title>\" <year> \"<genre>\" [patch]"
  echo ""
  echo " * CONVERT WITH DEFAULT DETECTION (NOT RECOMMENDED):"
  echo ""
  echo " $ ks-mp4k-wrapper --conv </path/video_file> </path/output_prefix>"
  echo " $ ks-mp4k-wrapper --conv-with-sub </path/video_file> </path/output_prefix>"
  echo ""
  echo "* EXAMPLES:"
  echo ""
  echo " $ ks-mp4k-wrapper --conv /tmp/video.mkv /tmp/output 0:0 0:1 3840x2160 \"My video\" 2018 \"Comedy\""
  echo " $ ks-mp4k-wrapper --conv-with-sub /tmp/video.mkv /tmp/output 0:0 0:1 0:3 3840x2160 \"My video\" 2018 \"Comedy\""
  echo " $ ks-mp4k-wrapper --conv /tmp/video.mkv /tmp/output 0:0 0:1 3840x2160 \"My video\" 2018 \"Comedy\" patch"
  echo ""
  echo "* Notes:"
  echo ""
  echo " + The option 'patch' apply the '-thread_queue_size 2048' patch to ffmpeg."
  echo " + If you specify a path or file with spaces, you must use quotes."
  echo ""
  exit
}

# Run the parameters
if [ -z "${1}" ] ; then
  showHelp
elif [ "${1}" == "--show-info" ] ; then
  # Check if file exist
  if [ -f "${2}" ] ; then
    showInfo "${2}"
  else
    echo ""
    echo "* The file '${2}' does not exist!'"
    echo ""
    exit
  fi
elif [ "${1}" == "--show-video-default" ] ; then
  # Check if file exist
  if [ -f "${2}" ] ; then
    showVideoDefault "${2}"
  else
    echo ""
    echo "* The file '${2}' does not exist!'"
    echo ""
    exit
  fi
elif [ "${1}" == "--show-audio-default" ] ; then
  # Check if file exist
  if [ -f "${2}" ] ; then
    showAudioDefault "${2}"
  else
    echo ""
    echo "* The file '${2}' does not exist!'"
    echo ""
    exit
  fi
elif [ "${1}" == "--show-subtitle-default" ] ; then
  # Check if file exist
  if [ -f "${2}" ] ; then
    showSubtitleDefault "${2}"
  else
    echo ""
    echo "* The file '${2}' does not exist!'"
    echo ""
    exit
  fi
elif [ "${1}" == "--show-resolution-default" ] ; then
  showResolutionDefault
elif [ "${1}" == "--show-name-title-default" ] ; then
  # Check if file exist
  if [ -f "${2}" ] ; then
    showNameDefault "${2}"
  else
    echo ""
    echo "* The file '${2}' does not exist!'"
    echo ""
    exit
  fi
elif [ "${1}" == "--show-year-default" ] ; then
  showYearDefault
elif [ "${1}" == "--show-genre-default" ] ; then
  showGenreDefault
elif [ "${1}" == "--conv" ] ; then
  # Check if file exist
  if [ -f "${2}" ] ; then
    if [ "${10}" == "patch" ] ; then
      echo -e "${4}\n${5}\nn\n${6}\ny\n${7}\n${8}\n${9}\ny\n" | ks-mp4k "${2}" "${3}"
    else
      echo -e "${4}\n${5}\nn\n${6}\nn\n${7}\n${8}\n${9}\ny\n" | ks-mp4k "${2}" "${3}"
    fi
  else
    echo ""
    echo "* The file '${2}' does not exist!'"
    echo ""
    exit
  fi
elif [ "${1}" == "--conv-with-sub" ] ; then
  # Check if file exist
  if [ -f "${2}" ] ; then
    if [ "${11}" == "patch" ] ; then
      echo -e "${4}\n${5}\ny\n${6}\n${7}\ny\n${8}\n${9}\n${10}\ny\n" | ks-mp4k "${2}" "${3}"
    else
      echo -e "${4}\n${5}\ny\n${6}\n${7}\nn\n${8}\n${9}\n${10}\ny\n" | ks-mp4k "${2}" "${3}"
    fi
  else
    echo ""
    echo "* The file '${2}' does not exist!'"
    echo ""
    exit
  fi
else
  showHelp
fi