#!/bin/bash

#

# prepare_doLinks.sh -- This function creates the base configuration

# of symbolic links your workstation needs to have in order for

# centos-art command to run correctly.

#

# Copyright (C) 2009-2011 Alain Reguera Delgado

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or (at

# your option) any later version.

#

# This program is distributed in the hope that it will be useful, but

# WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

# General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

# ----------------------------------------------------------------------

# $Id$

# ----------------------------------------------------------------------

function prepare_doLinks {

    # Verify `--links' option.

    if [[ $FLAG_LINKS == 'false' ]];then

        return

    fi

    # Print line separator.

    cli_printMessage '-' 'AsSeparatorLine'

    # Print action message.

    cli_printMessage "`gettext "Checking symbolic links"`" 'AsResponseLine'

    # Print line separator.

    cli_printMessage '-' 'AsSeparatorLine'

    local -a LINKS_SRC

    local -a LINKS_DST

    local SUFFIX=''

    local USERFILES=''

    local PALETTE=''

    local BRUSH=''

    local PATTERN=''

    local FONT=''

    local FILE=''

    local COUNT=0

    # Define user-specific directory for Gimp.

    local GIMP_USER_DIR=${HOME}/.$(rpm -q gimp | cut -d. -f-2)

    # Define user-specific directory for Inkscape.

    local INKS_USER_DIR=${HOME}/.inkscape

    # Define lists of files which symbolic links will point to.

    local FONTS=$(cli_getFilesList "${HOME}/artwork/trunk/Identity/Fonts" 'denmark\.ttf')

    local PALETTES=$(cli_getFilesList "${HOME}/artwork/trunk/Identity/Palettes" ".+\.gpl")

    local BRUSHES=$(cli_getFilesList "${HOME}/artwork/trunk/Identity/Brushes" ".+\.(gbr|gih)")

    local PATTERNS=$(cli_getFilesList "${HOME}/artwork/trunk/Identity/Patterns" ".+\.png")

    # Define link relation for cli.

    LINKS_SRC[0]=${HOME}/bin/$CLI_PROGRAM

    LINKS_DST[0]=${CLI_BASEDIR}/${CLI_PROGRAM}.sh

    # Define link relation for fonts.

    for FONT in $FONTS;do

        LINKS_SRC[((++${#LINKS_SRC[*]}))]=${HOME}/.fonts/$(basename $FONT)

        LINKS_DST[((++${#LINKS_DST[*]}))]=$FONT

    done

    # Define link relation for common palettes.

    for PALETTE in $PALETTES;do

        SUFFIX="${GIMP_USER_DIR}/palettes/$(prepare_doLinksSuffixes $PALETTE)"

        LINKS_SRC[((++${#LINKS_SRC[*]}))]=${SUFFIX}${NAME}${VERS}$(basename $PALETTE)

        LINKS_DST[((++${#LINKS_DST[*]}))]=$PALETTE

        SUFFIX="${INKS_USER_DIR}/palettes/$(prepare_doLinksSuffixes $PALETTE)"

        LINKS_SRC[((++${#LINKS_SRC[*]}))]=${SUFFIX}${NAME}${VERS}$(basename $PALETTE)

        LINKS_DST[((++${#LINKS_DST[*]}))]=$PALETTE

    done

    # Define link relation for common brushes.

    for BRUSH in $BRUSHES;do

        SUFFIX="${GIMP_USER_DIR}/brushes/$(prepare_doLinksSuffixes $BRUSH)"

        LINKS_SRC[((++${#LINKS_SRC[*]}))]=${SUFFIX}${NAME}${VERS}$(basename $BRUSH)

        LINKS_DST[((++${#LINKS_DST[*]}))]=$BRUSH

    done

    # Define link relation for common patterns.

    for PATTERN in $PATTERNS;do

        SUFFIX="${GIMP_USER_DIR}/patterns/$(prepare_doLinksSuffixes $PATTERN)"

        LINKS_SRC[((++${#LINKS_SRC[*]}))]=${SUFFIX}${NAME}${VERS}$(basename $PATTERN)

        LINKS_DST[((++${#LINKS_DST[*]}))]=$PATTERN

    done

    # Define which files inside user-specific directories need to be

    # removed in order for centos-art to make a fresh installation of

    # common patterns, common palettes and common brushes using

    # symbolic links from the repository.

    USERFILES=$(cli_getFilesList "${HOME}/.fonts" '.+\.ttf';

        cli_getFilesList "${HOME}/bin" '.+\.sh';

        cli_getFilesList "${GIMP_USER_DIR}/palettes" '.+\.gpl';

        cli_getFilesList "${GIMP_USER_DIR}/brushes" '.+\.(gbr|gih)';

        cli_getFilesList "${GIMP_USER_DIR}/patterns" '.+\.png';

        cli_getFilesList "${INKS_USER_DIR}/palettes" '.+\.gpl')

    # Remove installed files inside user-specific directories.

    if [[ "$USERFILES" != '' ]];then

        cli_printActionPreamble "${USERFILES[*]}" 'doDelete' 'AsResponseLine'

        for FILE in ${USERFILES};do

            cli_printMessage "${FILE}" 'AsDeletingLine'

            rm -r $FILE

        done

    fi

    # Create symbolic links. In case the the symbolic link parent

    # directory isn't created, it will be created in order to make

    # the link creation possible.

    cli_printActionPreamble "${LINKS_SRC[*]}" 'doCreate' 'AsResponseLine'

    while [[ $COUNT -lt ${#LINKS_SRC[*]} ]];do

        if [[ -f ${LINKS_SRC[$COUNT]} ]];then

            cli_printMessage "${LINKS_SRC[$COUNT]}" 'AsUpdatingLine'

        else

            cli_printMessage "${LINKS_SRC[$COUNT]}" 'AsCreatingLine'

        fi

        if [[ ! -d $(dirname ${LINKS_SRC[$COUNT]}) ]];then

            mkdir -p $(dirname ${LINKS_SRC[$COUNT]})

        fi

        ln ${LINKS_DST[$COUNT]} ${LINKS_SRC[$COUNT]} --symbolic --force

        COUNT=$(($COUNT + 1))

    done

}