---
env:
  global:
    - FORCE_BUILD=true
    # We use backticks in favor of the proper $() subshell call to cope with the
    # evaluation of Travis CI. Else we had trouble with the braces of the regex.
    # The regex matches on subdirectories only - identified by the trailing /.
    - TO_BUILD=`git diff --name-only $TRAVIS_COMMIT_RANGE HEAD | grep -oP '^.*?(?=\/)' | uniq | tr -s "\n" ":" || exit 0`

jobs:
  include:
    - &build_and_run
      stage: build and run images
      env: KERNEL=4.15.0-72-generic SUITE=xenial
      # Only run this job when there are changes in the subdir 'debirf'
      # Attention: Travis CI is only parsing this file if the condition is met.
      # before_install: git diff --name-only $TRAVIS_COMMIT_RANGE HEAD | grep -qP '^debirf/' && env
      before_install: env
      # Verbose if conditional instead  pure [[ ]] - else this won't work in this YAML file.
      # TODO: Check if TRAVIS_EVENT_TYPE is cron to trigger builds of daily cron jobs
      before_script:
        - |
          if [[ $FORCE_BUILD = true ]]; then
              echo 'Forcing build - even if there are no changes in ./debirf'
          else
            if ! [[ "$TRAVIS_EVENT_TYPE" = "cron" ]] && ! [[ "$TO_BUILD" = *"debirf"* ]]; then
              exit 0
            fi
          fi
      dist: bionic
      language: bash
      script: ./debirf/build_and_run_images
      # Tag generation with 'date' comes with a newline to strip off.
      # Use 'printf' instead.
      before_deploy:
        - git config --global user.email "build@travis-ci.com"
        - git config --global user.name "Travis CI"
        - export TRAVIS_TAG=$(printf '%(%Y%m%d)T')
        - git tag -a "$TRAVIS_TAG" -m 'Automatic release by Travis CI'
      deploy:
        provider: releases
        draft: false
        edge: true
        api_key: ${TOKEN}
        file_glob: true
        file: debirf/build/*
        cleanup: false
        on:
          branch: master

    - <<: *build_and_run
      env: KERNEL=5.0.0-37-generic SUITE=disco

    - &run_coinboot
      env: KERNEL=4.15.0-72-generic SUITE=xenial
      stage: run coinboot
      before_script:
        - |
          if [[ $FORCE_BUILD = true ]]; then
            echo 'Forcing build - even if there are no changes in ./debirf'
          else
            if ! [[ "$TRAVIS_EVENT_TYPE" = "cron" ]] && ! [[ "$TO_BUILD" = *"server"* ]]; then
              exit 0
            fi
          fi
      dist: bionic
      language: bash
      script: ./server/run_coinboot

      # - <<: *run_coinboot
      # env: KERNEL=4.15.0-45-generic SUITE=xenial

    - <<: *run_coinboot
      env: KERNEL=5.0.0-37-generic SUITE=disco