#!/bin/bash
#----------------------------------------------------
# Version:      0.2.4.0
# Author:       Florian "Bluewind" Pritz <f-p@gmx.at>
#
# Licensed under WTFPL v2
#   (see COPYING for full license text)
#---------------------------------------------------
# Extract an archive based on the mime type
#----------------------------------------------------

SCRIPTNAME=$(basename $0)
ARGS=""

EXIT_SUCCESS=0
EXIT_FAILURE=1
EXIT_ERROR=2
EXIT_BUG=10

# Colors for output
red='\e[0;31m'
RED='\e[1;31m'
green='\e[0;32m'
GREEN='\e[1;32m'
blue='\e[0;34m'
BLUE='\e[1;34m'
cyan='\e[0;36m'
CYAN='\e[1;36m'
NC='\e[0m'

function usage {
  echo -e "${blue}Usage:${NC} ${SCRIPTNAME} [OPTIONS] <files>" >&2
  echo -e "Options:" >&2
  echo -e "-C <dir> Extract content of the archive(s) to <dir> (not yet fully supported for all archives)" >&2
  echo -e "-R       Remove archive after extracting" >&2
  echo -e "-v       Verbose" >&2
  [[ $# -eq 1 ]] && exit $1 || exit $EXIT_FAILURE
}

function clean {
  if [ "$REMOVE_AFTER" = "true" ]; then
    rm $file
  fi
}

while getopts ':C:vhR' OPTION ; do
  case $OPTION in
    v)
      ARGS=${ARGS}" -v "
      UNZIPARGS=$UNZIPARGS""
    ;;
    C)
      TARARGS=${ARGS}" -C $OPTARG"
      UNZIPARGS=$UNZIPARGS" -d $OPTARG"
    ;;
    h)
      usage $EXIT_SUCCESS
    ;;
    R)
      REMOVE_AFTER=true
    ;;
    \?)
      echo "Unknown option \"-$OPTARG\"." >&2
      usage $EXIT_ERROR
    ;;
    :)
      echo "Option \"-$OPTARG\" needs an argument" >&2
      usage $EXIT_ERROR
    ;;
    *)
      echo "This shouldn't happen, please file a bugreport.">&2
      usage $EXIT_BUG
    ;;
  esac
done


shift $(( OPTIND - 1 ))

if (( $# < 1 )) ; then
  usage $EXIT_SUCCESS
fi

for file; do
  if [ -f "${file}" ] ; then
    case "${file}" in
      *.tar.bz2)   tar ${ARGS} ${TARARGS} -xjf "${file}" && clean;;
      *.tar.gz)    tar ${ARGS} ${TARARGS} -xzf "${file}" && clean;;
      *.tar.xz)    tar ${ARGS} ${TARARGS} -xf "${file}" && clean;;
      *.tbz2)      tar ${ARGS} ${TARARGS} -xjf "${file}" && clean;;
      *.tgz)       tar ${ARGS} ${TARARGS} -xzf "${file}" && clean;;
      *.7z)        7z x ${file} && clean;;
      *)
        case $(file -b --mime-type "${file}") in
          application/x-bzip2)          bunzip2 "${file}" && clean;;
          application/x-xz)             xz -d "${file}" && clean;;
          application/x-rar)            unrar x "${file}" && clean;;
          application/x-gzip)           gunzip "${file}" && clean;;
          application/x-tar)            tar ${ARGS} ${TARARGS} -xf "${file}" && clean;;
          application/zip)              unzip ${UNZIPARGS} "${file}" && clean;;
          application/x-compressed)     uncompress "${file}" && clean;;
          application/x-7z-compressed)  7z x "${file}" && clean;;
          *) echo -e "${RED}Error:$NC No rule how to extract \"${file}\" ($(file -b --mime-type "${file}"))";;
        esac
      ;;
    esac
  else
    echo -e "${RED}Error:$NC \"${file}\" doesn't exist"
  fi
done