#!/bin/sh

######################################################################
# Pre-commit hook for verifying that generated library modules match
# their EXPECTED content. Library modules are generated from fragments
# under the 'roles/lib_(openshift|utils)/src/' directories.
#
# If the attempted commit modified files under the
# 'roles/lib_(openshift|utils)/' directories this script will run the
# 'generate.py --verify' command.
#
# This script will NOT RUN if module source fragments are modified but
# not part of the commit. I.e., you can still make commits if you
# modified module fragments AND other files but are not comitting the
# the module fragments.

# Did the commit modify any source module files?
CHANGES=`git diff-index --stat --cached HEAD | grep -E '^ roles/lib_(openshift|utils)/src/(class|doc|ansible|lib)/'`
RET_CODE=$?
ABORT=0

if [ "${RET_CODE}" -eq "0" ]; then
    # Modifications detected. Run the verification scripts.

    # Which was it?
    if $(echo $CHANGES | grep -q 'roles/lib_openshift/'); then
	echo "Validating lib_openshift..."
	./roles/lib_openshift/src/generate.py --verify
	if [ "${?}" -ne "0" ]; then
	    ABORT=1
	fi
    fi

    if $(echo $CHANGES | grep -q 'roles/lib_utils/'); then
	echo "Validating lib_utils..."
	./roles/lib_utils/src/generate.py --verify
	if [ "${?}" -ne "0" ]; then
	    ABORT=1
	fi
    fi

    if [ "${ABORT}" -eq "1" ]; then
	cat <<EOF

ERROR: Module verification failed. Generated files do not match fragments.

Choices to continue:
  1) Run './roles/lib_(openshift|utils)/src/generate.py' from the root of
     the repo to regenerate the files
  2) Skip verification with '--no-verify' option to 'git commit'
EOF
    fi
fi

exit $ABORT