#!/bin/bash

#

# render_doThemeActions.sh -- This function performs theme-specific

# rendition.

#

# Copyright (C) 2009, 2010, 2011 The CentOS Artwork SIG

#

# 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 render_doThemeActions {

    local -a DIRS

    local COUNT=0

    local NEXT_DIR=''

    local MOTIF_NAME=''

    local MOTIF_DIR=''

    # Define base directory of artistic motifs. This is the location

    # where all artistic motifs are stored in.

    local MOTIF_BASEDIR="$(cli_getRepoTLDir $ACTIONVAL)/Identity/Images/Themes"

    # Define base directory of design models. This is the location

    # where all design models are stored in.

    local MODEL_BASEDIR="$(cli_getRepoTLDir $ACTIONVAL)/Identity/Models/Themes"

    # Define directory structure of design models. Design models

    # directory structures are used as reference to create artistic

    # motifs directory structure. Use the `--pattern' option to be

    # sure any modification to FLAG_FILTER won't affect the output

    # result. We need to make matching everything here, no matter what

    # the FLAG_FILTER value be.

    local MODEL_DIR=''

    local MODEL_DIRS="$(cli_getFilesList ${MODEL_BASEDIR}/${FLAG_THEME_MODEL} \

        --pattern=".+" --type="d" | egrep -v '\.svn' | sed -r '/^[[:space:]]*$/d' | sed -r \

        "s!^.*/${FLAG_THEME_MODEL}/!!" | sed -r '/^[[:space:]]*$/d')"

    # Define design model regular expression patterns from design

    # models directory structure.

    local MODEL_PATTERN=$(echo "$MODEL_DIRS" | tr "\n" '|' \

        | sed -e 's!^|!!' -e 's!|$!!')

    # Define list of renderable directory structures inside the

    # artistic motif. As reference, to build this list, use design

    # model directory structure. Later, filter the result using the

    # action value as reference to control what renderable directory

    # structure to produce. The more specific you be in the path

    # specification the more specific theme rendition will be.

    local MOTIF_RENDERABLE_DIR=''

    local MOTIF_RENDERABLE_DIRS=$(cli_getFilesList ${MOTIF_BASEDIR} \

        --pattern=".+/($MODEL_PATTERN)" --type="d" | grep "$ACTIONVAL")

    # Rebuild list of renderable directory structures using an array

    # variable. This let us to predict what directory is one step

    # forward or backward from the current directory structure.

    for MOTIF_RENDERABLE_DIR in $MOTIF_RENDERABLE_DIRS;do

        DIRS[((++${#DIRS[*]}))]=${MOTIF_RENDERABLE_DIR}

    done

    # Define total number of directories to process. This is required

    # in order to correct the counting value and so, make it to match

    # the zero based nature of bash array variables.

    local DIRS_TOTAL=$((${#DIRS[*]} - 1))

    while [[ $COUNT -le ${DIRS_TOTAL} ]];do

        # Redefine action value to refer the theme-specific renderable

        # directory.

        ACTIONVAL=${DIRS[$COUNT]}

        # Refine artistic motif name using the current action value.

        MOTIF_NAME=$(cli_getPathComponent $ACTIONVAL --motif)

        # Verify artistic motif name. The name of the artistic motif

        # must be present in order for theme rendition to happen.

        # Theme rendition takes place inside artistic motifs and the

        # artistic motif name is an indispensable part of it. Take

        # care of not using design models directory structure as name

        # for artistic motifs. They, sometimes, match the pattern used

        # to verify artistic motifs names but must not be confused.

        if [[ $MOTIF_NAME == '' ]] || [[ $MOTIF_NAME =~ "^$MODEL_PATTERN" ]];then

            COUNT=$(($COUNT + 1))

            continue

        fi

        # Refine artistic motif directory. This is the top directory

        # where all visual manifestations of an artistic motif are

        # stored in (e.g., Backgrounds, Brushes, Concept, Distro,

        # etc.).

        MOTIF_DIR="${MOTIF_BASEDIR}/${MOTIF_NAME}"

        # Define what is the next directory in the list, so we could

        # verify whether to render or not the current theme-specific

        # renderable directory.

        if [[ $COUNT -lt ${DIRS_TOTAL} ]];then

            NEXT_DIR=$(dirname ${DIRS[(($COUNT + 1))]})

        else

            NEXT_DIR=''

        fi

        # Verify whether to render or not the current theme's

        # renderable directory. This verification is needed in order

        # to avoid unncessary rendition loops. For example, don't

        # render `path/to/dir/A' when `path/to/dir/A/B' does exist,

        # that configuration would produce `/path/to/dir/A/B twice.

        if [[ $ACTIONVAL =~ '[[:digit:]]$' ]] || [[ $ACTIONVAL == $NEXT_DIR ]];then

            COUNT=$(($COUNT + 1))

            continue

        fi

        # Execute direct rendition on theme specific renderable

        # directory as specified by action value.

        render_doBaseActions

        # Increment counter to match the correct count value.

        COUNT=$(($COUNT + 1))

    done

}