######################################################################
# Custom definitions
#
# Other available definitions are defined in qinstall.sh and qpkg.cfg
######################################################################
CMD_TR="/bin/tr"
######################################################################
# All package specific functions shall call 'err_log MSG' if an error
# is detected that shall terminate the installation/upgrade.
######################################################################
#
######################################################################
# Define any package specific operations that shall be performed when
# the package is removed.
######################################################################
#PKG_PRE_REMOVE="{
#}"
#
#PKG_MAIN_REMOVE="{
#}"
#
PKG_POST_REMOVE="{
    # Remove symlink
    $CMD_RM -rf /var/lib/crashplan
}"
#
######################################################################
# Define any package specific initialization that shall be performed
# before the package is installed.
######################################################################
#pkg_init(){
#}
#
######################################################################
# Define any package specific requirement checks that shall be
# performed before the package is installed.
######################################################################
pkg_check_requirement(){
    # Get total available memory
    MEMMINIMUM=256
    MEMTOTAL=`$CMD_GREP -i "MemTotal" /proc/meminfo | $CMD_CUT -d' ' -f2- | $CMD_TR -d "[A-Z][a-z] " | $CMD_AWK '{printf("%d\n",($1/1024/256) + 0.5)}'`
    MEMTOTAL="$(($MEMTOTAL * 256))"

    # If there's less that 256Mb of RAM (half recommended size!) don't install
    if [ "$MEMTOTAL" -lt "$MEMMINIMUM" ]; then
        #$CMD_ECHO "Not enough memory to run CrashPlan! Minimum required: ${MEMMINIMUM}Mb"
        err_log "Not enough memory to run CrashPlan! Minimum required: ${MEMMINIMUM}Mb"
        exit 1
    fi
}
#
######################################################################
# Define any package specific operations that shall be performed when
# the package is installed.
######################################################################
pkg_pre_install(){
    # Check if package is being upgraded
    IS_UPGRADE="$($CMD_GETCFG $QPKG_NAME $SYS_QPKG_CONF_FIELD_VERSION -f $SYS_QPKG_CONFIG_FILE)"
}
#
pkg_install(){
    # Create symlink to not loose identity
    $CMD_RM -rf /var/lib/crashplan
    $CMD_LN -sf ${SYS_QPKG_DIR}/var /var/lib/crashplan

    # If package is being installed (not upgraded)
    if [ -z "$IS_UPGRADE" ]; then
        log "[CrashPlan] installation without upgrade"
        # If NAS has only 256Mb of RAM, create config file
        if [ "$MEMTOTAL" -le "$MEMMINIMUM" ]; then
            log "[CrashPlan] install: config file created"
            $CMD_ECHO "Config file created with mention of ${MEMMINIMUM}Mb RAM"
            $CMD_ECHO "memory=$MEMMINIMUM" > ${SYS_QPKG_DIR}/htdocs/config.conf
        fi

        # Start CrashPlan to generate config files so that on next start IP can be modified
        if [[ -f "${SYS_QPKG_DIR}/crashplan.sh" ]]; then
            #$CMD_ECHO "Starting CrashPlan to generate config files..."
            #${SYS_QPKG_DIR}/crashplan.sh start force
        else
            err_log "[CrashPlan] script file {SYS_QPKG_DIR}/crashplan.sh is missing"
        fi
       
    else
        log "install: upgrade"
        # upon upgrade clear upgrade values in CrashPlan conf
        if [[ -f "${SYS_QPKG_DIR}/conf/my.service.xml" ]]; then
            /bin/sed -i '/upgradeVersion/d;/upgradePath/d;/upgradeDelay/d' "${SYS_QPKG_DIR}/conf/my.service.xml"
        fi
    fi
}
#
pkg_post_install(){
    # Fix permission on htdocs for TS-10x devices - reported by B.C. Hamans
    $CMD_ECHO "pkg_post_install()"
    $CMD_CHMOD -R 755 ${SYS_QPKG_DIR}/htdocs
}