#!/bin/bash
set -euo pipefail

# Execute this code path on the host
if test -z "${INSIDE_VM:-}"; then
    . ${commondir}/libvm.sh
    vm_setup

    if ! vm_ssh_wait 30; then
      echo "ERROR: A running VM is required for 'make vmcheck'."
      exit 1
    fi

    set -x

    cd ${topsrcdir}

    # Support local development with e.g. an ostree built from git too,
    # or libasan.
    export VMCHECK_INSTTREE=${VMCHECK_INSTTREE:-$(pwd)/insttree}

    # Use a lock in case we're called in parallel (make install might fail).
    # Plus, we can just share the same install tree, and sharing is caring!
    flock insttree.lock sh -ec \
      '[ ! -d ${VMCHECK_INSTTREE} ] || exit 0
       DESTDIR=${VMCHECK_INSTTREE}
       mkdir -p ${DESTDIR}
       # Always pull ostree from the build container; we assume development and testing
       # is against git master.  See also sync.sh and build.sh.
       ostree --version
       for pkg in ostree{,-libs,-grub2}; do
          rpm -q $pkg
          # We do not have perms to read /etc/grub2 as non-root. In the prebuilt
          # container case, manpages are missing. Ignore that.
          rpm -ql $pkg | grep -vE "^/(etc|usr/share/(doc|man))/" >  list.txt
          # Also chown everything to writable, due to
          # https://bugzilla.redhat.com/show_bug.cgi?id=517575
          chmod -R u+w ${DESTDIR}/
          # Note we cant use --ignore-missing-args here since it was added in
          # rsync 3.1.0, but CentOS7 only has rsync 3.0.9. Anyway, we expect
          # everything in list.txt to be present (otherwise, tweak grep above).
          rsync -l --files-from=list.txt / ${DESTDIR}/
          rm -f list.txt
       done
       make install DESTDIR=${DESTDIR}
       touch ${DESTDIR}/.completed'
    [ -f ${VMCHECK_INSTTREE}/.completed ]

    vm_rsync

    vm_cmd env INSIDE_VM=1 /var/roothome/sync/tests/vmcheck/overlay.sh
    vm_reboot
    exit 0
fi

set -x

# And then this code path in the VM

# get csum of current default deployment
commit=$(rpm-ostree status --json | \
  python -c '
import sys, json;
deployment = json.load(sys.stdin)["deployments"][0]
print deployment["checksum"]
exit()')

if [[ -z $commit ]] || ! ostree rev-parse $commit; then
  echo "Error while determining current commit" >&2
  exit 1
fi

cd /ostree/repo/tmp
rm vmcheck -rf
ostree checkout $commit vmcheck --fsync=0
# ✀✀✀ BEGIN hack for https://github.com/projectatomic/rpm-ostree/pull/693 ✀✀✀
rm -f vmcheck/usr/etc/{.pwd.lock,passwd-,group-,shadow-,gshadow-,subuid-,subgid-}
# ✀✀✀ END hack for https://github.com/projectatomic/rpm-ostree/pull/693 ✀✀✀
rm vmcheck/etc -rf

# Now, overlay our built binaries & config files
INSTTREE=/var/roothome/sync/insttree
rsync -rlv $INSTTREE/usr/ vmcheck/usr/
if [ -d $INSTTREE/etc ]; then # on CentOS, the dbus service file is in /usr
  rsync -rlv $INSTTREE/etc/ vmcheck/usr/etc/
fi
ostree refs --delete vmcheck || true
ostree commit -b vmcheck -s '' --tree=dir=vmcheck --link-checkout-speedup
ostree admin deploy vmcheck