#!/bin/bash
IAm=${0##*/}    # Last component of script name for diagnostics
Usage='Usage: %s Provider_Code
        Provider_Code "%s" unknown
Valid Provider_Code values are:
Provider_Code   Provider
=============   ============
         1      AAC
         4      AGFIRST
         5      AGRIBANK
         6      COBANK
         7      COLUSA-GLENN
         8      FCSA
        11      HAWAII
        12      IDAHO
        16      FCBTEXAS
        17      WAC
        18      AGVANTIS
        20      YOSEMITE
        21      FPI
'
. /home/infrmtca/bin/dwh_Loadfuncs.sh
#TGT_DIR=.       # Assume that TGT_DIR is defined by above sourced script.
case "$1" in
        (1)     FILENAME="AAC";;
        (4)     FILENAME="AGFIRST";;
        (5)     FILENAME="AGRIBANK";;
        (6)     FILENAME="COBANK";;
        (7)     FILENAME="COLUSA-GLENN";;
        (8)     FILENAME="FCSA";;
        (11)    FILENAME="HAWAII";;
        (12)    FILENAME="IDAHO";;
        (16)    FILENAME="FCBTEXAS";;
        (17)    FILENAME="WAC";;
        (18)    FILENAME="AGVANTIS";;
        (20)    FILENAME="YOSEMITE";;
        (21)    FILENAME="FPI";;
        (*)     printf "$Usage" "$IAm" "$1" >&2
                exit 1;;
esac
echo "Supplied Input FileName: $FILENAME"

MAX_V=0 # Set highest version seen for the Provider specified by $FILENAME.
for i in "$TGT_DIR/$FILENAME"*.xml 
do      if [ "$MAX_V" == 0 ] && [ "$i" != "${i#*[*]}" ]
        then    # No matches were found, set up to create 1st file for this
                # Provider.  ($FILENAME and $MAX_V are already set
                # appropriately, so just get out.)
                break
        fi
        # Strip off $TGT_DIR/$FILENAME and "_v"
        VER_NUM=${i##*v}
        # Strip off the .xml to get just the version number.
        VER_NUM=${VER_NUM%.*}
        # If this version number is > than previously seen versions, save it.
        # This make the assumption that the version # will be numeric; if a
        # user might create a file with a clashing unexpected name, the code
        # should be extended to verify that $VER_NUM is a numeric string.
        [ "$VER_NUM" -gt "$MAX_V" ] && MAX_V=$VER_NUM
done
echo "First Part Of New File Name: $FILENAME"
echo "Versioin Of Current File: $MAX_V"
NEW_FILE_NAME="${FILENAME}_v$((MAX_V + 1)).xml"
echo "New Versioned File Name: "$NEW_FILE_NAME