#!/bin/bash
#
# cli_printActionPreamble -- This function standardizes action
# preamble messages. Action preamble messages provides a confirmation
# message that illustrate what files will be affected in the action.
#
# Generally, actions are applied to parent directories. Each parent
# directory has parallel directories associated. If one parent
# directory is created/deleted, the parallel directories associated do
# need to be created/deleted too.
#
# Copyright (C) 2009, 2010, 2011 The CentOS Project
#
# 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 cli_printActionPreamble {

    local FILES="$1"

    # Verify amount of files to process. If there is no one then there
    # is nothing else to do here.
    if [[ "$FILES" == '' ]];then
        return
    fi

    local ACTION="$2"
    local FORMAT="$3"
    local FILE=''
    local NEGATIVE=''
    local POSITIVE=''
    local COUNT=0

    # Replace spaces by new line.
    FILES=$(echo "$FILES" | sed -r "s! +!\n!g")

    # Redefine total number of directories.
    COUNT=$(echo "$FILES" | wc -l)

    # Redefine preamble messages based on action. At this point seems
    # to be some files to process so lets read ACTION to know what to
    # do with them.
    case $ACTION in

        'doCreate' )
            if [[ $FILES == '' ]];then
                NEGATIVE="`gettext "There is no entry to create."`"
            else
                POSITIVE="`ngettext "The following entry will be created" \
                    "The following entries will be created" $COUNT`:"
            fi
            ;;

        'doDelete' )
            if [[ $FILES == '' ]];then
                NEGATIVE="`gettext "There is no file to delete."`"
            else
                POSITIVE="`ngettext "The following entry will be deleted" \
                    "The following entries will be deleted" $COUNT`:"
            fi
            ;;

        'doLocale' )
            if [[ $FILES == '' ]];then
                NEGATIVE="`gettext "There is no file to locale."`"
            else
                POSITIVE="`ngettext "Translatable strings will be retrived from the following entry" \
                    "Translatable strings will be retrived from the following entries" $COUNT`:"
            fi
            ;;

        'doEdit' )
            if [[ $FILES == '' ]];then
                NEGATIVE="`gettext "There is no file to edit."`"
            else
                POSITIVE="`ngettext "The following file will be edited" \
                    "The following files will be edited" $COUNT`:"
            fi
            ;;

        * )
            # Check list of files to process.  If we have an empty
            # list of files, inform about that and stop the script
            # execution.  Otherwise, check all files in the list to be
            # sure they are regular files.
            if [[ "$FILES" == '' ]];then
                NEGATIVE="`gettext "There is no file to process."`"
            fi
            ;;

    esac

    # Print preamble message.
    if [[ $POSITIVE != '' ]] &&  [[ $NEGATIVE == '' ]];then
        cli_printMessage "$POSITIVE"
        for FILE in $FILES;do
            cli_printMessage "$FILE $FORMAT"
        done
        cli_printMessage "`gettext "Do you want to continue"`" --as-yesornorequest-line
    elif [[ $POSITIVE == '' ]] &&  [[ $NEGATIVE != '' ]];then
        cli_printMessage "$NEGATIVE" --as-error-line
    fi

}