check_for_migrations

check_migrations.sh

file_changes="$(git diff --name-only $(git merge-base master HEAD))"
migration_files="$(echo $file_changes | grep -c /migrations/)"
application_files="$(echo $file_changes | grep -c -v /migrations/ --include \*.ex --include \*.exs)"

echo "checking for migrations and apllication changes"

if (($migration_files == 0)) && (($application_files > 0));
then
  echo "Only Application Changes. OK"
  exit 0
elif (("$migration_files" > 0)) && (("$application_files" == 0));
then
  echo "Only Migrations. OK"
  exit 0
elif (("$migration_files" == 0)) && (("$application_files" == 0))
then
  echo "No new code or migrations. OK"
  exit 0
else
  echo "PR must contain either code or migrations, but not both"
  exit 1
fi