#!/bin/bash -x
#
# Script para gerar Slackbuild
# Por Rudson R. Alves
#
# Este script auxilia a criação de SlackBuilds, com o modelo
# do Luiz do Sarava Linux
#
# Slackbuilds são scripts utilizados no Slackware para gerar
# pacotes tgz.
#
# Version 0.9.0
#
#--------------------------------------------------------------------
# Functions
#--------------------------------------------------------------------
# Show ./configure --help
function config_help()
{
    dialog --backtitle "mkSlackBuild $PROG_VERSION [$MK_PKGNAME]" --title " Check ./configure --help " --textbox $CONFIG_HELP 20 75
}

# Exit function
function mk_exit()
{
    clean_all
    exit $1
}

# Clear all temp files
function clean_all()
{
    rm $AUX_TMP 2>/dev/null
    rm $SLACKDESC_TMP 2>/dev/null
    if [ ! -z $MK_PKGNAME ]; then
        rm $BASEDIR/*_$MK_PKGNAME.mkbuild 2>/dev/null
        [ -e /tmp/$MK_PKGNAME ] && rm -rf /tmp/$MK_PKGNAME
        [ ! -z $CONFIG_HELP ] && rm $CONFIG_HELP 2>/dev/null
    fi
}

# Print from file $2, the lines betwen <$1> and </$1> lines
function print_lines()
{
    [ $# -ne 2 ] && mk_exit 1
    eval "sed -n '/<$1>/,/<\/$1>/ { /<$1>/ b; /<\/$1>/ b; p; }' $2"
}

# Print from file $2, the lines betwen <$1> and $2 lines
function print_lines_to()
{
    [ $# -ne 3 ] && mk_exit 1
    eval "sed -n '/<$1>/,/$2/ { /<$1>/ b; /$2/ b; p; }' $3"
}

# Make slack-desc file
function mk_slackdesc()
{
    print_lines_to "slackdesc" "\[\[" $SB_MODEL
    echo -n $MK_PKGNAME | tr [a-z\-] " "
    echo -n "|-----handy-ruler"
    let N=18+${#MK_PKGNAME}
    for i in `seq $N $SLACKDESC_LEN`; do
        echo -n "-"
    done
    echo -en "|\n"

    for i in `seq 1 11`; do
        echo -en "$MK_PKGNAME: \n"
    done
    print_lines "slackdesc" $SB_MODEL | sed '1,/\]\]/ d'
}

# Get label status from Slackbuild model
function get_status()
{
    [ $# -ne 2 ] && mk_exit 1
    eval "sed -n '/<$1>/ p' $2 | sed 's/.*> \([a-z]\+\)/\1/'"
}

# Get status from edited SlackBuild
# input: $1 -> section name
# output: section status and section number
function mk_status()
{
    for i in `seq 0 $MAXSECTION`;do
        if [ "${SECTION_NAME[i]}" = "$1" ]; then
            echo "${SECTION_FLAG[i]} $i"
            return 0
        fi
    done
    return 1
}

# Edit file $3, by change string [[$1]] to $2
function edit_file()
{
    local STR_OLD
    local STR_NEW

    [ $# -ne 3 ] && mk_exit 1
    STR_OLD=$( echo $1 | sed 's/\//\\\//g' )
    STR_NEW=$( echo $2 | sed 's/\//\\\//g' )
    eval "sed 's/\[\[$STR_OLD\]\]/$STR_NEW/' $3 > $AUX_TMP"
    mv $AUX_TMP $3
}

# Unpackage source
function unpkg_source()
{
    dialog --backtitle "mkSlackBuild $PROG_VERSION [$MK_PKGNAME]" \
        --infobox "Uncompress source in /tmp/$MK_PKGNAME. Wait" 3 45
    [ $? -ne 0 ] && mk_exit 0
    mkdir /tmp/$MK_PKGNAME/ 2>/dev/null
    tar xvf $MK_SOURCE -C /tmp/$MK_PKGNAME/ 1>/dev/null
    [ $? -ne 0 ] && mk_exit 1
    MK_TMPSRC="/tmp/$MK_PKGNAME/`ls /tmp/$MK_PKGNAME/`"
}

# Download source
function download_url()
{
    clear
    wget --limit-rate=$MK_LIMITRATE $MK_URL -P $MK_SOURCEDIR/
    if [ $? -ne 0 ]; then
        echo "URL error"
        return 0
    fi
    MK_SOURCE=$MK_SOURCEDIR/$MK_SRCNAME
}

# Select source file
function select_source()
{
    MK_SOURCE=$BASEDIR
    while [ ! -f $MK_SOURCE ]; do
        MK_SOURCE=`dialog --stdout --backtitle "mkSlackBuild $PROG_VERSION [$MK_PKGNAME]" \
            --title " Select source file name (use spaces to select): " --fselect "$MK_SOURCE" 10 70`
        [ $? -ne 0 ] && mk_exit
        if [ ! -f $MK_SOURCE ]; then
            MK_SOURCE="$MK_SOURCE/"
        fi
    done

    MK_SRCNAME=`basename $MK_SOURCE`
    MK_SOURCEDIR=`dirname $MK_SOURCE`
}

#--------------------------------------------------------------------
# Edit functions
#--------------------------------------------------------------------
# Edit authot, Initials and editor
function edit_author()
{
    MK_AUTHOR=`dialog --stdout --backtitle "mkSlackBuild $PROG_VERSION [$MK_PKGNAME]" --inputbox "Enter with author complite name:" 8 60 "$MK_AUTHOR"`
    edit_file "AUTHOR NAME" "$MK_AUTHOR" ~/.mkslackbuild
    MK_AUTHOR_INITIALS=`echo $MK_AUTHOR | sed 's/ /\n/g' | sed 's/^\([A-Z]\).*/\1/' | sed ':i; $!N;  s/\n//; ti' | tr [A-Z] [a-z]`
    MK_AUTHOR_INITIALS=`dialog --stdout --backtitle "mkSlackBuild $PROG_VERSION [$MK_PKGNAME]" --inputbox "Enter with author assignature:" 8 60 "$MK_AUTHOR_INITIALS"`
    edit_file "AUTHOR INITIALS" "$MK_AUTHOR_INITIALS" ~/.mkslackbuild
    MK_EDITOR=`dialog --stdout --backtitle "mkSlackBuild $PROG_VERSION [$MK_PKGNAME]" --inputbox "Enter with editor command:" 8 60 "pico"`
    edit_file "EDITOR" "$MK_EDITOR" ~/.mkslackbuild
}

# Edit source URL
function edit_url()
{
    MK_URL=`dialog --stdout --backtitle "mkSlackBuild $PROG_VERSION [$MK_PKGNAME]" --inputbox "Enter with complite URL from source:" 8 60 "$MK_URL"`
    [ $? -ne 0 ] && mk_exit 0
}

# Edit source name
function edit_source_name()
{
    # Carrega nome do arquivo
    MK_SRCNAME=`basename $MK_URL`
    MK_SRCNAME=`dialog --stdout --backtitle "mkSlackBuild $PROG_VERSION [$MK_PKGNAME]" --inputbox "Enter with source file name:" 8 60 "$MK_SRCNAME"`
    [ $? -ne 0 ] && mk_exit 0
}

# Edit MK_PKGNAME, MK_VERSION and MK_EXTENSION
function edit_pkgname()
{
    # Remove nome, versão e extensão do nome da fonte
    MK_PKGNAME=`echo $MK_SRCNAME | sed -r 's/(.*)-(.*)\.(.*\..*)$/\1/'  | tr [A-Z] [a-z]`
    MK_VERSION=`echo $MK_SRCNAME | sed -r 's/(.*)-(.*)\.(.*\..*)$/\2/'`
    MK_EXTENSION=`echo $MK_SRCNAME | sed -r 's/(.*)-(.*)\.(.*\..*)$/\3/'`

    # Configura nome, versão e extensão do pacote
    ANS=`dialog --stdout --backtitle "mkSlackBuild $PROG_VERSION [$MK_PKGNAME]" \
        --form "Check information below:" 12 70 5 \
        "Package name:" 1 1 "$MK_PKGNAME"  1 15 30 60 \
        "Version:"      3 1 "$MK_VERSION"   3 15 30 100 \
        "Extension:"    5 1 "$MK_EXTENSION" 5 15 30 8`
    [ $? -ne 0 ] && mk_exit 0

    MK_PKGNAME=`echo $ANS | awk '{print $1}'`
    MK_VERSION=`echo $ANS | awk '{print $2}'`
    MK_EXTENSION=`echo $ANS | awk '{print $3}'`
}

# Edit configure options
function edit_configure()
{
    CONFIG_HELP=`mktemp -p /tmp/ config_$MK_PKGNAME.XXXXXX`

    $MK_TMPSRC/configure --help > $CONFIG_HELP
    config_help
    [ "$( cat $CONFIG_HELP  | egrep '/usr/local')" != "" ] && MK_PREFIX=/usr || MK_PREFIX=/opt/kde
    MK_OPTIONS=""
    local ANS0=1

    while [ $ANS0 -eq 1 ]; do
        local ANS="0"
        while [ $ANS -ne 4 ]; do
            ANS=`dialog --stdout --backtitle "mkSlackBuild $PROG_VERSION [$MK_PKGNAME]" \
                --menu "Select one option" 0 0 0 \
                1 "View ./configure help" \
                2 "PREFIX=$MK_PREFIX" \
                3 "OPTIONS=$MK_OPTIONS" \
                4 "Continue"`
            [ $? -ne 0 ] && mk_exit

            case $ANS in
                '1')
                    config_help
                ;;
                '2')
                    MK_PREFIX=`dialog --stdout --backtitle "mkSlackBuild $PROG_VERSION [$MK_PKGNAME]" --inputbox "Enter with prefix for install $MK_PKGNAME" 8 60 "$MK_PREFIX"`
                ;;
                '3')
                    MK_OPTIONS=`dialog --stdout --backtitle "mkSlackBuild $PROG_VERSION [$MK_PKGNAME]" --inputbox "Enter with configure options for compile $MK_PKGNAME" 8 60 "$MK_OPTIONS"`
                ;;
                '4')
                    echo "Continue..."
                ;;
                *)
                    ANS=4
                ;;
            esac
        done

        # Configure
        dialog --backtitle "mkSlackBuild $PROG_VERSION [$MK_PKGNAME]" --title " Execute ./configure below? " --yesno "./configure --prefix=$MK_PREFIX $MK_OPTIONS" 6 70
        if [ $? -eq 0 ]; then
            (
            cd $MK_TMPSRC
            ./configure --prefix=$MK_PREFIX $MK_OPTIONS
            )

            echo -en "\nPress ENTER to continue"
            read ANS0
        fi

        dialog --backtitle "mkSlackBuild $PROG_VERSION [$MK_PKGNAME]" --title " Configure line is ok? " --yesno "./configure --prefix=$MK_PREFIX $MK_OPTIONS" 6 70

        ANS0=$?
    done
}

# Edit documentations files
function edit_docfiles()
{
    [ -z $MK_TMPSRC ] && return 0

    if [ -e $MK_TMPSRC ]; then
        LIST=`( cd $MK_TMPSRC; find . -type f -maxdepth 1 | cut -c3- )`
        DOCMENU=""
        for i in $LIST; do
            if [ "`echo NEWS TODO README AUTHORS INSTALL ChangeLog | grep $i`" != "" ]; then
                DOCMENU="$DOCMENU $i \"\" on"
            else
                DOCMENU="$DOCMENU $i \"\" off"
            fi
        done
        SELECTDOCS=`eval "dialog --stdout --separate-output --backtitle \"mkSlackBuild $PROG_VERSION [$MK_PKGNAME]\" --title \" Documentations files \" --checklist \"Select documentation files below:\" 20 45 13 $DOCMENU"`
    fi

    MK_DOCFILES="$SELECTDOCS"
}

#--------------------------------------------------------------------
# Mount files
#--------------------------------------------------------------------
# Change string $1 to $2 in all files in the current directory
function change_strings()
{
    # echo "$1 -> $2"
    [ $# -ne 2 ] && mk_exit 1
    eval "grep -l \"\[\[$1\]\]\" *" | while read FILE; do
        edit_file "$1" "$2" $FILE
    done
}

# Build initial sections
function start_build()
{
    change_strings "SOURCE NAME" "${MK_SRCNAME//.$MK_EXTENSION}"
    change_strings "PROGRAM NAME" "$MK_PKGNAME"
    change_strings "PACKAGE NAME" "$MK_PKGNAME"
    change_strings "PROGRAM URL" "$MK_URL"
    change_strings "AUTHOR" "$MK_AUTHOR"
    change_strings "AUTHOR INITIALS" $MK_AUTHOR_INITIALS
    change_strings "VERSION" $MK_VERSION
    change_strings "SOURCE EXTENSION" $MK_EXTENSION
    change_strings "DOWNLOAD FOLDER URL" "`dirname $MK_URL`"
    change_strings "OTHER CONFIGURE ARGS" "$MK_OPTIONS"
    change_strings "DOCUMENTATION FILES" "$MK_DOCFILES"
    change_strings "PREFIX" "$MK_PREFIX"
}

# Mount final SlackBuild
function mount_slackbuild()
{
    dialog --backtitle "mkSlackBuild $PROG_VERSION [$MK_PKGNAME]" --infobox "SlackBuild save..." 5 30

    rm $SLACKBUILD 2>/dev/null
    for i in `seq 0 $MAXSECTION`; do
        if [ "${SECTION_FLAG[i]}" = "all" -o "${SECTION_FLAG[i]}" = "on" ]; then
            cat ${SECTION_NAME[i]}_$MK_PKGNAME.mkbuild >> $SLACKBUILD
            echo "" >> $SLACKBUILD
        fi
    done
}

# Make files section
function make_file_sections()
{
    THIS_MODEL=$1

    # Create SlackBuilds-sections files
    rm *_$MK_PKGNAME.mkbuild 2>/dev/null

    # Make files section
    INDEX=0
    while read ITEM; do
        SECTION_NAME[INDEX]="$ITEM"

        AUX=${SB_SECTION[$INDEX,0]}_${MK_PKGNAME}
        SECTION_FILE=${SECTION_NAME[INDEX]}_${MK_PKGNAME}.mkbuild
        rm $SECTION_FILE 2>/dev/null

        STRING=$ITEM
        # Save section status flag
        SECTION_FLAG[INDEX]=`get_status "$STRING" $THIS_MODEL`

        # Create sections files
        print_lines "$STRING" $THIS_MODEL  > $SECTION_FILE
        let INDEX++
    done < <( cat $THIS_MODEL | grep '^<[a-z_]\+>' | sed 's/<\(.*\)>.*$/\1/' )

    let INDEX--
    MAXSECTION=$INDEX
}

#--------------------------------------------------------------------
# Main functions
#--------------------------------------------------------------------
# Create new Slackbuild
function create_slackbuild()
{
    # Config package URL
    edit_url

    # Source Name
    edit_source_name

    # Package name, version and extension
    edit_pkgname

    # Get source file
    dialog --stdout --backtitle "mkSlackBuild $PROG_VERSION [$MK_PKGNAME]" \
            --yesno " Download $MK_SRCNAME? " 5 50
    if [ $? -eq 0 ]; then
        download_url
    else
        select_source
    fi

    # Uncompress source
    unpkg_source

    # Configure compiler options if exist .configure
    if [ -e $MK_TMPSRC/configure ]; then
        edit_configure
    fi

    # Edit documentation list
    edit_docfiles

    # Create files sections
    make_file_sections $SB_MODEL

    # Slackbuild script name
    SLACKBUILD=$MK_SLACKBUILDDIR/$MK_PKGNAME.Slackbuild

    mk_slackdesc > slackdesc_$MK_PKGNAME.mkbuild

    # Edit builds sections
    start_build

    # Main-Menu
    edit_menu
}

# Open mkslackbuild
function open_mkslackbuild()
{
    MKFILE=`dialog --stdout --backtitle "mkSlackBuild $PROG_VERSION [$MK_PKGNAME]" \
            --title " Select source file name (use spaces to select): " \
            --fselect "$BASEDIR/" 10 70`
    [ $? -ne 0 ] && mk_exit 1

    if [ -f $MKFILE ]; then
        # Start defaults variables
        source $MKFILE

        # SlackBuild scrit name
        SLACKBUILD=$MK_SLACKBUILDDIR/$MK_PKGNAME.Slackbuild

        # Create files sections
        make_file_sections $MKFILE

        # Main-Menu
        edit_menu
    else
        dialog --backtitle "mkSlackBuild $PROG_VERSION [$MK_PKGNAME]" \
            --msgbox "$MKFILE most be a file" 0 0
    fi
}

# Save mkSlackbuild
function save_mkslackbuild()
{
    dialog --backtitle "mkSlackBuild $PROG_VERSION [$MK_PKGNAME]" --infobox "mkSlackBuild save..." 5 30

    MKSLACKBUILD=$BASEDIR/$MK_PKGNAME.mkslackbuild

    rm $MKSLACKBUILD 2>/dev/null
    echo '#!/bin/bash' > $MKSLACKBUILD
    echo -e "# mkSlackBuild version $MK_VERSION\n" >> $MKSLACKBUILD
    echo "MK_SRCNAME=\"$MK_SRCNAME\"" >> $MKSLACKBUILD
    echo "MK_PKGNAME=\"$MK_PKGNAME\"" >> $MKSLACKBUILD
    echo "MK_URL=\"$MK_URL\"" >> $MKSLACKBUILD
    echo "MK_AUTHOR=\"$MK_AUTHOR\"" >> $MKSLACKBUILD
    echo "MK_AUTHOR_INITIALS=\"$MK_AUTHOR_INITIALS\"" >> $MKSLACKBUILD
    echo "MK_VERSION=\"$MK_VERSION\"" >> $MKSLACKBUILD
    echo "MK_EXTENSION=\"$MK_EXTENSION\"" >> $MKSLACKBUILD
    echo "MK_DOCFILES=\"$MK_DOCFILES\"" >> $MKSLACKBUILD
    echo "MK_OPTIONS=\"$MK_OPTIONS\"" >> $MKSLACKBUILD
    echo "MK_PREFIX=\"$MK_PREFIX\"" >> $MKSLACKBUILD
    echo -e "return 0\n\n" >> $MKSLACKBUILD

    for i in `seq 0 $MAXSECTION`; do
        echo "<${SECTION_NAME[i]}> ${SECTION_FLAG[i]}" >> $MKSLACKBUILD
        cat ${SECTION_NAME[i]}_$MK_PKGNAME.mkbuild >> $MKSLACKBUILD
        echo "</${SECTION_NAME[i]}> ${SECTION_FLAG[i]}" >> $MKSLACKBUILD
        echo "" >> $MKSLACKBUILD
    done
}

# Edit Menu
function edit_menu()
{
    ANSE=0
    while [ $ANSE -ne 1 ]; do
        # Create main-menu string
        EDITMENU=""
        for i in `seq 0 $MAXSECTION`; do
            #echo "${SECTION_NAME[i]} ${SECTION_FLAG[i]} ${SECTION_FILE[i]}"
            EDITMENU="$EDITMENU ${SECTION_NAME[i]} ${SECTION_FLAG[i]}"
        done

       SELECT=`eval "dialog --stdout --backtitle \"mkSlackBuild $PROG_VERSION [$MK_PKGNAME]\" --menu \"Select one section to edit\" 20 40 13 $EDITMENU"`
        ANSE=$?
        if [ $ANSE -ne 1 ]; then
            STATUS=`mk_status $SELECT`
            if [ $? -ne 0 ]; then
                echo "Section name error..."
                mk_exit 1
            fi
            FLAG=`echo $STATUS | awk '{print $1}'`
            INDEX=`echo $STATUS | awk '{print $2}'`
            if [ "$FLAG" = "on" ]; then
                SECTION_FLAG[$INDEX]=`dialog --stdout --backtitle "mkSlackBuild $PROG_VERSION [$MK_PKGNAME]" --radiolist "Change status from $SELECT" 0 0 0 "on" "enable section" "on" "off" "desable section" "off"`
            elif [ "$FLAG" = "off" ]; then
                SECTION_FLAG[$INDEX]=`dialog --stdout --backtitle "mkSlackBuild $PROG_VERSION [$MK_PKGNAME]" --radiolist "Change status from $SELECT" 0 0 0 "on" "enable section" "off" "off" "desable section" "on"`
            fi
            if [ "${SECTION_FLAG[$INDEX]}" = "on" -o "${SECTION_FLAG[$INDEX]}" = "all" ]; then
                $MK_EDITOR ${SELECT}_${MK_PKGNAME}.mkbuild
            fi
        fi
    done
}


#
#--------------------------------------------------------------------
#                        Start Program
#--------------------------------------------------------------------
#
set +x
PROG_VERSION=0.9.0
LANG=us
BASEDIR=`pwd`
AUX_TMP=`mktemp -p  /tmp/ aux_tmp.XXXXXX`
SLACKDESC_TMP=`mktemp -p  /tmp/ slackdesc_tmp.XXXXXX`
SLACKDESC_LEN=77
if [ -e ~/.generic.mkSlackBuild ]; then
    SB_MODEL=~/.generic.mkSlackBuild
elif [ -e /etc/simplepkg/generic.mkSlackBuild ]; then
    SB_MODEL=/etc/simplepkg/generic.mkSlackBuild
else
    echo "SlackBuild model (generic.mkSlackBuild) not found"
    mk_exit 0
fi

# Clear dialog
dialog --clear

# Load/create personal definitions
if [ ! -e ~/.mkslackbuild ]; then
    ( cat << EOF > ~/.mkslackbuild
#!/bin/bash
# mkslackbuild definitions
#
MK_AUTHOR="[[AUTHOR NAME]]"
MK_AUTHOR_INITIALS="[[AUTHOR INITIALS]]"
MK_EDITOR=[[EDITOR]]
MK_LIMITRATE="100k"
MK_SOURCEDIR=\`pwd\`
#MK_URL="ftp://localhost"
#MK_SLACKBUILDDIR=/slackbuild-dir
EOF
)
fi
source ~/.mkslackbuild
MK_SOURCEDIR=${MK_SOURCEDIR:=$BASEDIR}
MK_SLACKBUILDDIR=${MK_SLACKBUILDDIR:=$BASEDIR}

# Config Author
if [ "$MK_AUTHOR" = "[[AUTHOR NAME]]" ]; then
    edit_author
fi

ANS0=7
while [ $ANS0 -ne 0 ]; do
    if [ -z $MK_PKGNAME ]; then
        ANS0=`dialog --stdout --backtitle "mkSlackBuild $PROG_VERSION [$MK_PKGNAME]" \
        --menu "Main Menu:" 0 0 0 \
        "1" "Create New SlackBuild" \
        "2" "Open edited SlackBuild" \
        "0" "Exit"`
        EXIT_STATUS=$?
    else
        ANS0=`dialog --stdout --backtitle "mkSlackBuild $PROG_VERSION [$MK_PKGNAME]" \
        --menu "Main Menu:" 0 0 0 \
        "1" "Create New SlackBuild" \
        "2" "Open MkSlackBuild" \
        "3" "Save MkSlackBuild" \
        "4" "Make Slackbuild" \
        "5" "Edit setions menu" \
        "0" "Exit"`
        EXIT_STATUS=$?
    fi

    if [ $EXIT_STATUS -ne 0 ]; then
        mk_exit $EXIT_STATUS
    fi

    case $ANS0 in
        1)
            create_slackbuild
            ;;
        2)
            open_mkslackbuild
            ;;
        3)
            save_mkslackbuild
            ;;
        4)
            mount_slackbuild
            ;;
        5)
            edit_menu
            ;;
        *)
            true
            ;;
    esac
done

if [ ! -z $MK_PKGNAME ]; then
    MKSLACKBUILD=$BASEDIR/$MK_PKGNAME.mkslackbuild
    if [ ! -e $MKSLACKBUILD ]; then
        save_mkslackbuild
    fi
fi

mk_exit 0
# _________________________________END_______________________________