---

stages:
  - lint
  - test
  - bot

variables:
  DOCS_BASEURL: "https://docs.xmpp.rs"
  FEATURES: ""
  RUST_BACKTRACE: "full"
  RUSTFLAGS: " -D warnings"
  RUSTDOCFLAGS: " -D warnings"

.show-version:
  before_script:
    - apt-get update; apt-get install -y --no-install-recommends pkg-config libssl-dev
    - rustc --version
    - cargo --version

.stable:
  image: rust:slim
  extends:
    - .show-version

.nightly:
  image: rustlang/rust:nightly-slim
  extends:
    - .show-version

.test:
  stage: test
  script:
    - cargo test --verbose
    - cargo test --verbose --no-default-features
  rules:
    - if: $CI_PIPELINE_SOURCE == 'merge_request_event'
    - if: $CI_PIPELINE_SOURCE == 'push' && $CI_COMMIT_REF_NAME == 'main'

.docs:
  stage: test
  script:
    - echo "Building docs to CI_DOC_TARGET=$CI_DOC_TARGET"
    - RUSTDOCFLAGS="--cfg docsrs -D warnings" RUSTFLAGS="--cfg xmpprs_doc_build" cargo +nightly doc --no-deps -Zrustdoc-map --all-features
    - apt install -y rsync openssh-client
    - mkdir -p $HOME/.ssh
    - echo -e "Host docs\n\tHostname docs.xmpp.rs\n\tPort 1312\n\tUser xmpp-rs\n\tStrictHostKeyChecking no" > $HOME/.ssh/config
    - echo "$SECRET_DOCS_SSH_PRIVATE" > $HOME/.ssh/id_ed25519
    - chmod 400 $HOME/.ssh/id_ed25519
    - rsync -av target/doc/ docs:$CI_DOC_TARGET
  rules:
    - if: $CI_PIPELINE_SOURCE == 'merge_request_event'
      variables:
        CI_DOC_TARGET: "$CI_MERGE_REQUEST_IID"
    - if: $CI_PIPELINE_SOURCE == 'push' && $CI_COMMIT_REF_NAME == 'main'
      variables:
        CI_DOC_TARGET: "main"

rustfmt:
  stage: lint
  script:
    - rustup component add rustfmt
    - cargo fmt --version
    - cargo fmt --check
  extends:
    - .stable
  rules:
    - if: $CI_PIPELINE_SOURCE == 'merge_request_event'
    - if: $CI_PIPELINE_SOURCE == 'push' && $CI_COMMIT_REF_NAME == 'main'

changelog-update:
  stage: lint
  image: alpine:latest
  # Check in the commit message for "skip.?changelog", if not present
  # then check for changes in changelogs.
  # XXX: It looks like $CI_COMMIT_MESSAGE mangles newlines so it's not
  # possible to require the "skip.?changelog" string to be on its own line,
  # that means it would also trigger within a wall of text. Not so obvious.
  # TODO: Check the whole MR for updates in changelogs, not just the last
  # commit.
  script:
    - apk add --no-cache git python3
    - git log --online "${CI_MERGE_REQUEST_DIFF_BASE_SHA}~.." --
    - |
      /usr/bin/env python3 -c "
      import os, re, subprocess, sys
      # Skip this check if instructed
      if re.search(r'skip.?changelog', os.environ['CI_COMMIT_MESSAGE'], flags=re.I) is not None:
          print('Changelog skipped.')
          sys.exit(0)
      subprocess.run(['git', '--version'])
      treeish = 'main..'
      if os.environ['CI_PIPELINE_SOURCE'] == 'merge_request_event':
          treeish = '{}~..'.format(os.environ['CI_MERGE_REQUEST_DIFF_BASE_SHA'])
      subprocess.run(['git', 'log', '--oneline', treeish, '--'])
      diff=subprocess.run(
        ['git', 'diff-tree', '--no-commit-id', '-r', treeish, '--'],
        capture_output=True,
      )
      print(f'FOO: {diff.stdout}\n\n{diff.stderr}')
      # Verify if at least a single changelog file has been added or edited
      if re.search(rb'[AM]\s+\S*changelog', diff.stdout, flags=re.I) is None:
          print('Please update the Changelog. Use \"skip-changelog\" in the commit message to skip this check.')
          sys.exit(1)
      print('Changelog has been updated as expected.')"
  rules:
    - if: $CI_PIPELINE_SOURCE == 'merge_request_event'
    - if: $CI_PIPELINE_SOURCE == 'push' && $CI_COMMIT_REF_NAME == 'main'

stable-test:
  extends:
    - .test
    - .stable

nightly-test:
  # It's not often, but it happens nightly breaks, surprisingly.
  allow_failure: true
  extends:
    - .test
    - .nightly

docs:
  extends:
    - .docs
    - .nightly

bot-comment:
  stage: bot
  image: alpine:latest
  script:
    - apk add --no-cache glab
    - glab mr --repo "$CI_MERGE_REQUEST_PROJECT_PATH" comment $CI_MERGE_REQUEST_IID --unique --message "Thanks for your MR! You can preview the docs [here]($DOCS_BASEURL/$CI_MERGE_REQUEST_IID/)."
  rules:
    - if: $CI_PIPELINE_SOURCE == 'merge_request_event'
      variables:
        GITLAB_TOKEN: $MR_AUTOMATION_TOKEN