# https://docs.travis-ci.com/user/customizing-the-build
# https://docs.travis-ci.com/user/caching/
# https://docs.travis-ci.com/user/languages/haskell/
# http://docs.haskellstack.org/en/stable/travis_ci.html
# https://raw.githubusercontent.com/commercialhaskell/stack/master/doc/travis-simple.yml
# https://raw.githubusercontent.com/commercialhaskell/stack/master/doc/travis-complex.yml
# https://github.com/hvr/multi-ghc-travis#user-content-travisyml-template-for-non-container-based-infrastructure
# https://docs.travis-ci.com/user/common-build-problems/#Build-times-out-because-no-output-was-received
# https://github.com/koterpillar/tianbar/blob/master/Dockerfile.base - custom docker image to save time
# https://github.com/mapnik/mapnik/blob/master/.travis.yml
#
# The Build Lifecycle #
# A build on Travis CI is made up of two steps:
# install: install any dependencies required
# script: run the build script
# You can run custom commands before the installation step (before_install), and before (before_script) or after (after_script) the script step.
# In a before_install step, you can install additional dependencies required by your project such as Ubuntu packages or custom services.
# You can perform additional steps when your build succeeds or fails using the after_success (such as building documentation, or deploying to a custom server) or after_failure (such as uploading log files) options. In both after_failure and after_success, you can access the build result using the $TRAVIS_TEST_RESULT environment variable.
# The complete build lifecycle, including three optional deployment steps and after checking out the git repository and changing to the repository directory, is:
#
# OPTIONAL Install apt addons
# OPTIONAL Install cache components
# before_install
# install
# before_script
# script
# OPTIONAL before_cache (for cleaning up cache)
#  Travis CI uploads the cache after the script phase of the build, but before either after_success or after_failure.
#  Failure to upload the cache does not mark the job as failed.
# after_success or after_failure
# OPTIONAL before_deploy
# OPTIONAL deploy
# OPTIONAL after_deploy
# after_script
#
# we limit the `make` to 40 min
# to ensure that slow builds still upload their
# cache results and therefore should be faster
# (and might work) for the next build
# - DURATION=2400
# - scripts/travis-command-wrapper.py -s "date" -i 120 --deadline=$(( $(date +%s) + ${DURATION} )) make

sudo: false

dist: trusty

language: generic

cache:
  timeout: 1000
  directories:
    - $HOME/.stack/
    - $HOME/.local/bin/
    - .stack-work/
    - shelltestrunner/

# addons:
#   apt:
#     packages:
#     - libgmp-dev

branches:
  only:
    - master
    - travis

# matrix:
#   include:
#   - env: ARGS=""
#   - env: ARGS="--stack-yaml stack-7.10.yaml"
#   - ghc: 7.10.3
#   - ghc: 8.0.2

install: # command output is hidden as they complete

  # if any command fails, end the travis script
  - set -e

  # warn about nulls ? no, breaks travis
  #- set -u

  # stack
  - mkdir -p ~/.local/bin
  - export PATH=~/.local/bin:$PATH
  - if [[ ! -x ~/.local/bin/stack ]]; then travis_retry curl -L https://www.stackage.org/stack/linux-x86_64 | tar xz --wildcards --strip-components=1 -C ~/.local/bin '*/stack'; chmod a+x ~/.local/bin/stack; fi
  - stack --version

  # GHC
  - stack setup
  - stack exec -- ghc --version

  # hledger dependencies, or at least some of them, built separately to use less memory
  # - stack build --only-dependencies hledger-lib #hledger hledger-ui # --test
    # TODO does this build hledger-lib & hledger, then rebuild them later with -Werror ?
  # - stack build cryptohash
  # - stack build --only-dependencies hledger-web # --test
  # - stack build --only-dependencies hledger-api # --test
  # addon dependencies
  #- stack build Chart Chart-diagrams colour Diff

  # shelltestrunner, need unreleased installable version
  #- git clone http://github.com/simonmichael/shelltestrunner
  - if [[ ! -d shelltestrunner ]]; then git clone http://github.com/simonmichael/shelltestrunner; fi
  - if [[ ! -x ~/.local/bin/shelltest ]]; then stack install --stack-yaml=shelltestrunner/stack.yaml --resolver=lts-8.6; fi
  - shelltest --version

script:  # command output is not hidden

  # less slow

  # build hledger packages, ensuring no warnings, 
  # and any deps not already cached, separately to use less memory
  - stack build --ghc-options=-Werror hledger-lib
  - stack build --ghc-options=-Werror hledger
  - stack build --ghc-options=-Werror hledger-ui
  - stack build --ghc-options=-Werror hledger-web
  - stack build --ghc-options=-Werror hledger-api

  # run functional tests, skipping the ones for addons
  - COLUMNS=80 stack exec -- shelltest --execdir -j16 tests -x /bin -x /addons

  # more slow

  # build hledger packages, ensuring no warnings, no haddock failures, package test suites passing,
  # and any deps not already cached, separately to use less memory
  #- stack build --ghc-options=-Werror --test --haddock --no-haddock-deps hledger-lib
  #- stack build --ghc-options=-Werror --test --haddock --no-haddock-deps hledger
  #- stack build --ghc-options=-Werror --test --haddock --no-haddock-deps hledger-ui
  #- stack build --ghc-options=-Werror --test --haddock --no-haddock-deps hledger-web
  #- stack build --ghc-options=-Werror --test --haddock --no-haddock-deps hledger-api

  # build hledger addons, ensuring no warnings
  #- stack build Diff
  #- stack build Chart 
  #- stack build diagrams-lib
  #- stack build Chart-diagrams
  #- sh -e bin/compile.sh

  # run functional tests
  #- make functest

#after_script:
#
#  # list directory contents
#  - pwd
#  - ls -laF /
#  - ls -laF $HOME
#  - ls -laF
#
#  # coveralls.io coverage reports
#  # - stack install hpc-coveralls
#  # - hpc-coveralls count-von-count-tests --exclude-dir=tests --exclude-dir=src/Gyrid --display-report

notifications:
  irc:
    channels:
      - "chat.freenode.net#hledger"
    on_success: change # [always|never|change] default: always
    on_failure: change # default: always
    use_notice: true
    skip_join: true
    # If you enable skip_join, remember to remove the NO_EXTERNAL_MSGS flag (n) on the IRC channel(s) the bot notifies.
    template:
      - "%{commit}: %{message} %{build_url}"
      # - "%{repository_name} (%{commit}) : %{message} %{build_url}"
    # You can interpolate the following variables:
    #     repository_slug: your GitHub repo identifier (like svenfuchs/minimal)
    #     repository_name: the slug without the username
    #     repository: same as repository_slug [Deprecated]
    #     build_number: build number
    #     build_id: build id
    #     branch: branch build name
    #     commit: shortened commit SHA
    #     author: commit author name
    #     commit_message: commit message of build
    #     commit_subject: first line of the commit message
    #     result: result of build
    #     message: travis message to the build
    #     duration: duration of the build
    #     compare_url: commit change view URL
    #     build_url: URL of the build detail
    # The default template is:
    #   - "%{repository}#%{build_number} (%{branch} - %{commit} : %{author}): %{message}"
    #   - "Change view : %{compare_url}"
    #   - "Build details : %{build_url}"

  # email: # false
  #   recipients:
  #     - one@example.com
  #     - other@example.com
  #   on_success: [always|never|change] # default: change
  #   on_failure: [always|never|change] # default: always