version: 2

jobs:
  build:
    machine: true
    working_directory: ~/repo

    steps:
      - checkout

      - run:
          name: Check if Packer files were modified
          command: |
            export COMMIT_ID="$(echo $CIRCLE_COMPARE_URL | cut -d '/' -f 7)"
            if [ "$(git diff-tree --no-commit-id --name-only -r $COMMIT_ID | grep -c \"^Packer/\")" -gt 0 ]; then
              export PACKER_MODIFIED=1
            else
              export PACKER_MODIFIED=0
            fi

      - run:
          name: Check if Vagrant files were modified
          command: |
            export COMMIT_ID="$(echo $CIRCLE_COMPARE_URL | cut -d '/' -f 7)"
            if [ "$(git diff-tree --no-commit-id --name-only -r $COMMIT_ID | grep -c \"^Vagrant/\")" -gt 0 ]; then
              export VAGRANT_MODIFIED=1
            else
              export VAGRANT_MODIFIED=0
            fi


      - run:
          name: Choose which build gets run
          command: |
            if [[ "$PACKER_MODIFIED" -eq 1 ]] && [[ "$VAGRANT_MODIFIED" -eq 1 ]]; then
              chmod +x ci/circle_workflows/packer_and_vagrant_changes.sh
              ci/circle_workflows/packer_and_vagrant_changes.sh
              exit 0
            fi
            if [[ "$PACKER_MODIFIED" -eq 1 ]] && [[ "$VAGRANT_MODIFIED" -eq 1 ]]; then
              chmod +x ci/circle_workflows/vagrant_changes.sh
              ci/circle_workflows/vagrant_changes.sh
              exit 0
            fi
            if [ "$PACKER_MODIFIED" -eq 1 ]; then
              chmod +x ci/circle_workflows/packer_changes.sh
              ci/circle_workflows/packer_changes.sh
              exit 0
            fi
            if [ "$VAGRANT_MODIFIED" -eq 1 ]; then
              chmod +x ci/circle_workflows/vagrant_changes.sh
              ci/circle_workflows/vagrant_changes.sh
              exit 0
            fi

      - store_artifacts:
          path: /tmp/artifacts