#! /bin/bash -
# Implementing update functionality for an PSA.
###############################################################################
#                                                                             
#                                UPDATE PSA
# Usage:
#   update_psa [ --? ]
#              [ -m  ]
#              [ --help ]
#              [ --wdir "working_directory" ]
#              [ --file "config_file" ]
#              [ --dbg ]
#              [ --version ]
#                                                                           
# ./update_psa --file $PWD/update_psa.conf --wdir $PWD
#
###############################################################################
# if [ $# -eq 0 ]; then
    # no parameters given -> nothing to do
#    exit 0
#fi

if [ -z $IFS ]; then
    IFS=$'\n'
fi

MAINTENANCE="NO"

# parse commandline parameters
while test $# -gt 0; do
    case $1 in
        --maintenance | -m )
            shift
            MAINTENANCE="YES"
            ;;
        --file | --fil | --fi | --f | -file | -fil | -fi | -f )
            shift
            CONFIGFILENAME="$1"
            ;;
        --zone | --zon | --zo | --z | -zone | -zon | -zo | -z )
            shift
            ZONE="$1"
            ;;
        --wdir | --wdi | --wd | --w | -wdir | -wdi | -wd | -w )
            shift
            WORKING_DIRECTORY="$1"
            ;;
        --help | -hel | --he | --h | '--?' | -help | -hel | -he | -h | '-?' )
            usage_and_exit 0
            ;;
        --version | --versio | --versi | --vers | --ver | --ve | --v | \
        -version | -versio | -versi | -vers | -ver | -ve | -v )
            version
            exit 0
            ;;
        --dbg | --db | --d | -dbg | -db | -d )
            shift
            set_dbg_level $DEBUG
            ;; 
        -*)
            error "Unrecognized option: $1"
            ;;
        *)
            break
            ;;
    esac
    shift
done

if cd "$WORKING_DIRECTORY"; then
    source ./update_psa_impl

    if read_config
    then
        check_default_route
        check_route_to_repository "185.191.219.134" # git.mimbach.de
        check_for_running_apism
        if clone_customer_repository ${CUSTOMER_REPOSITORY_PATH}
	    then 
            check_sanity_of_repository

            if [ "$MAINTENANCE" = "NO" ]; then
                log_info "update_psa:${LINENO}: MAINTENANCE OFF. Checking for updates..."
                # someone must have activated the WAIT-button in ISMAS. 
                # Request the status of this button in updates_available().
                if ! updates_available; then 
                    update_psa_false_alarm "update requested, but no WAIT state detected !!!"
                    log_fatal "update_psa:${LINENO}: update requested, but no WAIT state detected !!!"
                fi
            else
                # simulate an activated WAIT-button
                set_updates_available
                while :
                do
                    sleep 5
                    updates_available && break
                done 
            fi
            # updates available
            update_psa
        fi
    fi
    exit 0
fi

exit -1
###############################################################################