image: "rust:latest"

variables:
  CARGO_HOME: $CI_PROJECT_DIR/.cargo
  PACKAGE_REGISTRY_URL: "${CI_API_V4_URL}/projects/${CI_PROJECT_ID}/packages/generic/fif"

cache:
  paths:
    - target
    - .cargo

default:
  before_script:
    - rustc --version
    - cargo version

stages:
  - lint # KNEE-DEEP IN THE DEBUG
  - cache-cleanup # THE CACHES OF HELL
  - build-base # INFERNAL build times
  - build # THY CREDITS CONSUMED
  - test # SIGKILL
#  - release

# TEMPLATES

# this step uses cargo-sweep to clean up unneeded cruft that accumulates over time in the target dir. cargo clean is
# not used because it simply rm -rf's the entire target directory (and thus prevents build caching). i would really like
# to either replace this with a bash script, or to install cargo-sweep as a binary instead of building it from source
# like this. i'd also like to add a step that checks to see whether the target dir exists, and exits early if not.
.cargo-cleanup:
  stage: cache-cleanup
  allow_failure: true
  script:
    - cargo install cargo-sweep
    - cargo sweep -i

# this builds a "base" version of fif with default features enabled. this is done separately from the main build step
# for the purposes of caching - by building once *before* executing the parallel cargo-build step, we ensure that
# cargo-build can reuse some cached stuff, rather than building from scratch every time.
.cargo-build-base:
  stage: build-base
  script:
    cargo build --locked

# build with various features on and off.
.cargo-build:
  extends: .cargo-build-base
  stage: build
  parallel:
    matrix:
      - FEATURES:
        - xdg-mime-backend
        - infer-backend
        - multi-threaded xdg-mime-backend
        - multi-threaded infer-backend

  script:
    cargo build --no-default-features --locked --features="json $FEATURES"

# test with various features on and off.
.cargo-test:
  extends: .cargo-build
  stage: test
  script:
    cargo test --no-default-features --locked --verbose --features="json $FEATURES"

# LINT

# run the included clippy.sh with "ci" mode on - clippy will exit with code 1 if anything at all is amiss. this is just
# here to make sure i remember to run clippy.sh locally myself and fix/ignore all the warnings before committing, as i
# should be.
clippy:
  stage: lint
  script:
    - rustup component add clippy
    - cargo clippy --version
    - ./clippy.sh ci

# CACHE CLEANUP
cleanup-stable:
  extends: .cargo-cleanup

# commented out because cargo-sweep no longer works on our MSRV
#cleanup-msrv:
#  extends: cleanup-stable
#  image: "rust:1.43.0"
#  cache:
#    key: msrv
#    paths:
#      - target
#      - .cargo

cleanup-nightly:
  extends: cleanup-stable
  image: "rustlang/rust:nightly"
  cache:
    key: nightly
    paths:
      - target
      - .cargo

# BUILD BASE
build-base-stable:
  extends: .cargo-build-base
  needs: ["cleanup-stable"]

build-base-msrv:
  extends: build-base-stable
#  needs: ["cleanup-msrv"]
  image: "rust:1.43.0"
  cache:
    key: msrv
    paths:
      - target
      - .cargo

build-base-nightly:
  extends: build-base-stable
  needs: ["cleanup-nightly"]
  image: "rustlang/rust:nightly"
  cache:
    key: nightly
    paths:
      - target
      - .cargo

# BUILD

build-stable:
  extends: .cargo-build
  needs: ["build-base-stable"]

build-msrv:
  extends: build-stable
  needs: ["build-base-msrv"]
  image: "rust:1.43.0"
  cache:
    key: msrv
    paths:
      - target
      - .cargo

build-nightly:
  extends: build-stable
  needs: ["build-base-nightly"]
  image: "rustlang/rust:nightly"
  cache:
    key: nightly
    paths:
      - target
      - .cargo

# TEST

test-stable:
  extends: .cargo-test
  needs: ["build-stable"]

test-msrv:
  extends: test-stable
  image: "rust:1.43.0"
  needs: ["build-msrv"]
  cache:
    key: msrv
    paths:
      - target
      - .cargo

test-nightly:
  extends: test-stable
  image: "rustlang/rust:nightly"
  needs: ["build-nightly"]
  cache:
    key: nightly
    paths:
      - target
      - .cargo

# RELEASE
# this is currently all disabled because
# a) it's gross
# b) it probably won't work and i really don't want to partake in CI tomfoolery right now, or ever

#build-release:
#  stage: release
#  cache: { }
#  rules:
#    - if: $CI_COMMIT_TAG
#  needs: ["test-stable"]
#  script:
#    - ./package.sh
#  artifacts:
#    paths:
#      - out/

#upload-release:
#  stage: release
#  cache: { }
#  rules:
#    - if: $CI_COMMIT_TAG
#  image: curlimages/curl:latest
#  script:
#    - git describe --tags --abbrev=0 | cut -c 2- > tmp
#    - |
#      cd out
#      for _bin in *.{zip,xz} do; curl --header "JOB-TOKEN: ${CI_JOB_TOKEN}" --upload-file "$_bin" "${PACKAGE_REGISTRY_URL}/$(cat ../tmp)/${_bin}"; done
#    - rm ../tmp

#create-release:
#  stage: release
#  cache: {}
#  image: registry.gitlab.com/gitlab-org/release-cli:latest
#  rules:
#    - if: $CI_COMMIT_TAG
#  script:
#    - |
#      cd out
#      echo -n "release-cli create --name \"Release $CI_COMMIT_TAG\" --tag-name=\"$CI_COMMIT_TAG\" " > tmp.sh
#      git describe --tags --abbrev=0 | cut -c 2- > tmp
#      for _bin in *.{zip,xz}; do echo -n --assets-link \"\{\"name\":\"${_bin}\",\"url\":\"${PACKAGE_REGISTRY_URL}/$(cat tmp)/${_bin}\"\}\" >> tmp.sh; echo -n " " >> tmp.sh; done
#    - cat tmp.sh
#    - bash tmp.sh
#    - |
#      rm tmp.sh
#      rm tmp