pre-push

#!/usr/bin/env bash
#
# Description
# -----------
# Runs fast validations against codebase on `git push`
# Includes:
#   - linter;
#   - unit tests;
#   - go vet.
#
# Installation
# ------------
# Copy this file to .git/hooks

echo "Pre-push validation started... (see .git/hooks/pre-push)"

DOCKER_IMAGE_TAG=goapstra/tests:local

function build_image_or_exit_with_error() {
  if ! docker build -t ${DOCKER_IMAGE_TAG} -f ci.Dockerfile . > /dev/null; then
    exit $?
  fi
}

if ! docker image inspect ${DOCKER_IMAGE_TAG} &>/dev/null; then
  echo "Docker image ${DOCKER_IMAGE_TAG} does not exist, build it..."
  build_image_or_exit_with_error
else
  created=$(docker image inspect ${DOCKER_IMAGE_TAG} --format '{{ .Created }}' 2>/dev/null)

  if [[ -n "${created}" ]]; then
    image_epoch=$(date -u -jf "%Y-%m-%dT%H:%M:%S" ${created} +%s 2>/dev/null)
    dockerfile_epoch=$(stat -f%m ci.Dockerfile)

    if (( image_epoch < dockerfile_epoch )); then
      echo "Docker image ${DOCKER_IMAGE_TAG} is older than Dockerfile, rebuild it..."
      build_image_or_exit_with_error
    fi
  fi
fi

echo "Run 'make verify'"
docker run --rm -w /go/src -v "$(pwd)":/go/src ${DOCKER_IMAGE_TAG} make --keep-going fast-check

exit $?