#!/usr/bin/env sh
#
# DESCRIPTION:
#   Simple recording tool and wrapper around giph (ffmpeg).
#
# NOTE:
#
#   $1 : <gif>, <mkv>  : Type.
#   $2 : <size, <full> : Scope.
#
# DEPENDENCIES:
#   ffmpeg
#   notify-send.sh
#   pkill (coreutils)
#
# 2021-2022 : João F. © BeyondMagic <koetemagie@gmail.com>

# 1. Variables.
{
  # A. Indepedent of variables.
  frame_rate=30
  time=10
  name='カメラ'

  # B. Depedent of variables.
  path_recordings="$HOME/.cache/recording"
  icons="$HOME/.local/share/icons"
  replace_id="$HOME/.cache/recording.id"
}

# 2. Functions to minise code.
#{

# I.
notify()
{

  notify-call \
    --replace-file "$replace_id" \
    "$@"

}

# II.
stop()
{

  # A.
  #pkill -INT -f 'ffmpeg -f alsa -ac 1 -i pulse -f x11grab -r 30 -s '
  giph --stop

  # C.
  eww update record_menu=false

}
#}

# #. Kill previous giph process.
if [ "$(pgrep -f 'bash.+giph')" ]; then

  # A. Let the user decide.
  next=$(notify \
    -d 'echo yes' \
    "$name" \
    'Do you want to stop current recording?')

  # A. End with previous giph session.
  [ "$next" = 'yes' ] && stop

  # B. Just exit cleanly.
  exit 0

fi

# 2. To see if current fyletype is supported.
{

  case "$1" in

    # A. Supported.
    'mkv' | 'gif' | 'webm' | 'mp4') ;;

    # B. Not supported.
    *)

      # I. Let the user decide.
      format=$(notify \
        -o 'echo mkv:MKV' \
        -o 'echo webm:WEBM' \
        -o 'echo mp4:MP4' \
        -o 'echo gif:GIF' \
        "$name" \
        'What is the filetype you want to record?')

      # II. Execute itself.
      exec $0 $format $2

      ;;

  esac

}

# 3. Whether to choose fullscreen recording or sizeable one.
{
  if [ "$2" = 'fullscreen' ]; then

    # A. From <WxH+X+Y> monitor.
    geometry="$(xrandr | awk '/ primary/{print $4}')"

  elif [ "$2" = 'set' ]; then

    # A. To get size & position of the recording set.
    geometry="$(slop -f "%wx%h+%x+%y")"

  else

    # I. Let the user decide.
    next=$(notify \
      -o 'echo fullscreen:The whole_screen!' \
      -o 'echo set:Let me set.' \
      "$name" \
      'How exactly do you want to record?')

    # II. Execute itself.
    exec $0 $1 $next

  fi
}

# 4. Start recording.
{

  mkdir -p "$path_recordings"
  name_file="$path_recordings/$2-$(date +'%a_%b_%d_%H:%M:%S').$1"

  # A. Timer.
  #for i in {1..$time}; do

  #  # I.
  #  notify "Starting in $i seconds."

  #  # II. Wait for next second.
  #  sleep ${i}s

  #done

  # B. Send a sign of recording to lemonbar so that you know it is being recorded.
  eww update record_menu=true

  # C. Start recording.
  giph \
    -g "$geometry" \
    -f "$frame_rate" \
    "$name_file"

  # D.
  stop

  # E.
  responder="$(notify \
    -o 'echo open:See file?' \
    -o 'echo none:Hell no' \
    "$name" \
    'Recording has finished.')"

  # F. For action-driven response.
  if [ "$responder" = 'open' ]; then

    # I.
    nohup \
      gtk-launch \
      "$(xdg-mime query default inode/directory)" \
      "$path_recordings/" \
      > /dev/null 2>&1 &

  fi

}

rm -f "$replace_id"