#!/bin/bash
# vi:set ts=8 sw=4 et sta:
#
# Author: Clark J. Wang <dearvoid at gmail.com>
# 
# $Date$
# $HeadURL$
# $Revision$
#
#--------------------------------------------------------------------#

function BEGIN
{
    if [ ! -e "$record_file" ]; then
        echo "$record_file not found"
        exit 1
    fi
}

#-- main ------------------------------------------------------------#

{
    BEGIN

    tmpfile=/tmp/delete.tmp
    while true; do
        clear

        echo "Delete Employee Record"
        echo ""

        while true; do
            echo -n "Enter a phone number (xxxxxxxx): "
            read phone_number
            if [ ! "$phone_number" ]; then
                echo "Phone number not entered"
                continue
            fi

            if ! echo $phone_number | grep -Eq '^[0-9]{8}$'; then
                echo "Invalid phone number"
                continue
            fi

            break
        done

        if grep "$phone_number" $record_file 2> /dev/null; then
            echo -n "Confirm deletion: (y)es or (n)o: "
            read confirm
            if [ "$confirm" != y -a "$confirm" != Y ]; then
                break
            fi

            sed -e "/^..-$phone_number:/d" "$record_file" > $tmpfile
            cat $tmpfile > "$record_file"

            echo -n "Delete another? (y)es or (n)o: "
            read confirm
            if [ "$confirm" = y -o "$confirm" = Y ]; then
                continue
            else
                break
            fi
        else
            echo "$phone_number not found"
            echo -en "\nPress Enter to continue..."
            read
            exit 1
        fi
    done
}