#!/bin/bash
set -eu
set -o pipefail

opts=
attach_opts=
repos="repos --enable rhel-7-server-rpms"
satellite_repo="rhel-7-server-rh-common-beta-rpms"

if [ -n "${REG_AUTO_ATTACH:-}" ]; then
    opts="$opts --auto-attach"

    if [ -n "${REG_SERVICE_LEVEL:-}" ]; then
        opts="$opts --servicelevel $REG_SERVICE_LEVEL"
    fi

    if [ -n "${REG_RELEASE:-}" ]; then
        opts="$opts --release=$REG_RELEASE"
    fi
else
    if [ -n "${REG_SERVICE_LEVEL:-}" ]; then
        echo "WARNING: REG_SERVICE_LEVEL set without REG_AUTO_ATTACH."
    fi

    if [ -n "${REG_RELEASE:-}" ]; then
        echo "WARNING: REG_RELEASE set without REG_AUTO_ATTACH."
    fi

    if [ -n "${REG_POOL_ID:-}" ]; then
        attach_opts="$attach_opts --pool=$REG_POOL_ID"
    fi
fi

if [ -n "${REG_BASE_URL:-}" ]; then
    opts="$opts --baseurl=$REG_BASE_URL"
fi

if [ -n "${REG_ENVIRONMENT:-}" ]; then
    opts="$opts --env=$REG_ENVIRONMENT"
fi

if [ -n "${REG_FORCE:-}" ]; then
    opts="$opts --force"
fi

if [ -n "${REG_SERVER_URL:-}" ]; then
    opts="$opts --serverurl=$REG_SERVER_URL"
fi

if [ -n "${REG_ACTIVATION_KEY:-}" ]; then
    opts="$opts --activationkey=$REG_ACTIVATION_KEY"

    if [ -z "${REG_ORG:-}" ]; then
        echo "WARNING: REG_ACTIVATION_KEY set without REG_ORG."
    fi
else
    if [ -n "${REG_PASSWORD:-}" ]; then
        opts="$opts --password $REG_PASSWORD"
    fi

    if [ -n "${REG_USER:-}" ]; then
        opts="$opts --username $REG_USER"
    fi
fi

if [ -n "${REG_MACHINE_NAME:-}" ]; then
    opts="$opts --name $REG_MACHINE_NAME"
fi

if [ -n "${REG_ORG:-}" ]; then
    opts="$opts --org $REG_ORG"
fi

if [ -n "${REG_REPOS:-}" ]; then
    for repo in $REG_REPOS; do
        repos="$repos --enable $repo"
    done
fi

if [ -n "${REG_TYPE:-}" ]; then
    opts="$opts --type=$REG_TYPE"
fi

case "${REG_METHOD:-}" in
    portal)
        subscription-manager register $opts
        if [ -z "${REG_AUTO_ATTACH:-}" ]; then
            subscription-manager attach $attach_opts
        fi
        subscription-manager $repos
        ;;
    satellite)
        repos="$repos --enable ${satellite_repo}"
        rpm -Uvh "$REG_SAT_URL/pub/katello-ca-consumer-latest.noarch.rpm" || true
        subscription-manager register $opts
        subscription-manager $repos
        # beta-rpms repo only needed to support the katello-ca rpm above.
        subscription-manager repos --disable rhel-7-server-rh-common-beta-rpms
        ;;
    disable)
        echo "Disabling RHEL registration"
        export REG_HALT_UNREGISTER=1 # stops attempt to unregister
        ;;
    *)
        echo "WARNING: only 'portal', 'satellite', and 'disable' are valid values for REG_METHOD."
        exit 0
esac