#!/bin/bash 

#-----------------------------------------------------------------------
# Script to dowload eBook from http://lidn.sf.net
# Only tested in Gentoo Linux. Installation mode just works for devhelp
# Licensed GPLv2 by José Alberto Suárez López <bass@gentoo.org>
# lun jul 4 02:19:03 CEST 2005 
#-----------------------------------------------------------------------

NO_ARGS=0 
EBDIR="$HOME/.devhelp/books"
TMPDIR="/var/tmp/ebooktmp"
DWONDIR="$PWD"

[ ! -d ${EBDIR} ] && mkdir -p ${EBDIR}

while getopts "u:i:d:s:e:hclr" miopt
do
    case $miopt in
	h) opth=1 ;;
	c) RC_NOCOLOR=yes ;;
	l) optl=1 ;;
	r) optr=1 ;;
	i) opti="$OPTARG" ;;
	d) optd="$OPTARG" ;;
	s) opts="$OPTARG" ;;
	u) optu="$OPTARG" ;;
	e) opte="$OPTARG" ;;
	*) echo " " "* Try -h for help"
	    exit 1;;
    esac
done

if [[ ${RC_NOCOLOR} == yes ]]; then
    unset GOOD WARN BAD NORMAL HILITE BRACKET BOLD
else
    GOOD=$'\e[32;01m'
    WARN=$'\e[33;01m'
    BAD=$'\e[31;01m'
    NORMAL=$'\e[0m'
    HILITE=$'\e[36;01m'
    BRACKET=$'\e[34;01m'
    BOLD=$'\e[1m'
fi

eerror () {
    echo -e " ${BAD}*${NORMAL} $*"
}

ewarn () {
    echo -e " ${WARN}*${NORMAL} $*"
}

einfo () {
    echo -e " ${GOOD}*${NORMAL} $*"
}

etab () {
    echo -e "    " "$*"
}

ayuda () {
    echo "${HILITE}eBook downloader${NORMAL} for ${BOLD}Gentoo Linux${NORMAL} ${BRACKET}[${NORMAL} ${GOOD}v 0.6${NORMAL} ${BRACKET}]${NORMAL}"
    echo -e " " "by bass@gentoo.org"
    echo
    einfo "Usage: `basename $0` options (-hlrid)"
    echo
    etab "${BOLD}-l     ${NORMAL}  : list aviable eBooks and installed eBooks."
    etab "${BOLD}-r     ${NORMAL}  : retrieve/refresh eBooks list."
    etab "${BOLD}-d NAME${NORMAL}  : dowload eBook."
    etab "${BOLD}-i NAME${NORMAL}  : install eBook previously dowloaded to devhelp."
    etab "${BOLD}-u NAME${NORMAL}  : uninstall eBook. ${BAD}Don't use confirmation${NORMAL}."
    etab "${BOLD}-e NAME${NORMAL}  : ${BOLD}emerge${NORMAL} an eBook."
    etab "${BOLD}-s EXPR${NORMAL}  : search eBook."
    etab "${BOLD}-c     ${NORMAL}  : disable color."
    etab "${BOLD}-h     ${NORMAL}  : show this help."
    echo
    einfo "To download and insatll an Ebook : "
    einfo "${BOLD}ebookmerge.sh -e bashref-2.05a.tgz${NORMAL} or other eBook name."
    echo
    einfo "This script actually doesn't works with relative paths."
    exit 1
}

mktmp () {
    [ ! -d ${TMPDIR} ] && mkdir -p ${TMPDIR}
}

unpack () {
    case "$2"
    in
	'gzip')
	    einfo "unpacking $1..."
	    tar xvfz "$1" > /dev/null
	    ;;
	    
	'bzip2')
	    einfo "unpacking $1..."
	    tar xvfj "$1" > /dev/null
	    ;;
	*)
	    if test ! -e "$1"
	    then
		eerror "$1 not found."
		exit 1
	    else
		eerror "$2 Type not supported."
		exit 1
	    fi
	    ;;
    esac
}

if [ $# -eq "$NO_ARGS" ]
then
    ayuda
fi

if [ -n "$opth" ] 
then
    ayuda
fi

if [ -n "$optl" ] 
then
    [ ! -f ${EBDIR}/.urls.ebook ] && eerror "First you must use -r option" && exit 1
    cat ${EBDIR}/.urls.ebook | awk 'BEGIN { FS="/" } { print $5}' > ${EBDIR}/.list.ebook
    ls ${EBDIR} > ${EBDIR}/.installed.ebook
    NUMBER=$(cat ${EBDIR}/.list.ebook | wc -l)
    
    einfo "List of know eBooks :"
    cat ${EBDIR}/.list.ebook
    
    einfo "Total eBooks : ${BOLD}$NUMBER${NORMAL}"
    echo
    einfo "eBooks installed :"
    cat ${EBDIR}/.installed.ebook
fi

if [ -n "$optr" ] 
then
    einfo "Dowloading list from http://lidn.sf.net..."
    cd ${EBDIR}
    wget -q http://lidn.sourceforge.net/books_download.php
    cat books_download.php | gawk '/Location/{print $2}' | sed -e 's/<\/b>//' -e 's/<br>//' > ${EBDIR}/.urls.ebook
    rm books_download.php
    einfo "Dowloaded. Use ${BOLD}-l${NORMAL} for a list."
fi

if [ -n "$opti" ]
then
    [ -z "$*" ] && eerror "Miss NAME parameter." && exit 1
    mktmp
    TYPE=$(file "$opti" | cut -f 2 -d : |cut -f 2 -d ' ')
    FILE=$(basename $opti)
    einfo "Preparing to install $opti in DevHelp..."
    EBNAME=$(echo $FILE | sed -e 's/.tgz//' -e 's/.tar.gz//')
    cp $opti ${TMPDIR} &> /dev/null
    cd ${TMPDIR}
    unpack $opti $TYPE
    mv book.devhelp book/${EBNAME}.devhelp
    cp -rf book ${EBDIR}/${EBNAME}
    rm -rf ${TMPDIR}
    einfo "$opti installed in DevHelp :-)"
fi

if [ -n "$optd" ]
then
    [ -z "$*" ] && eerror "Miss NAME parameter." && exit 1
    mktmp
    cd ${DOWNDIR}
    einfo "Dowloading eBook $optd in $DOWNDIR..."
    wget -q -c http://lidn.sourceforge.net/books_download/$optd
    einfo "Dowloaded."
fi

if [ -n "$opts" ]
then
    [ ! -f ${EBDIR}/.list.ebook ] && eerror "Please use ${BOLD}-l${NORMAL} to create list of eBooks." && exit 1
    [ -z "$*" ] && eerror "You need specify what to seacrh." && exit 1
    einfo "Results for $opts :"
    cat ${EBDIR}/.list.ebook | grep $opts
fi

if [ -n "$optu" ]
then
    [ -z "$*" ] && eerror "You need specify what to delete. Use ${BOLD}-l${NORMAL} for a list." && exit 1
    ewarn "$optu will be ${BAD}deleted in 5 seconds${NORMAL}...."
    sleep 5
    rm -rf ${EBDIR}/$optu
    einfo "$optu was deleted."
    
fi

if [ -n "$opte" ]
then
    [ -z "$*" ] && eerror "You need specify what to emerge. Use ${BOLD}-l${NORMAL} for a list." && exit 1
    DOWNDIR="$TMPDIR" $0 -d $opte
    $0 -i ${TMPDIR}/$opte
    rm -rf ${TMPDIR}
fi
    
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