version: 2.1

commands:
  setup-home-local-bin:
    steps:
      - run:
          shell: /bin/bash -euo pipefail
          command: |
            mkdir -p "$HOME/.local/bin"
            line='export PATH="$HOME/.local/bin:$PATH"'
            if grep "$line" $BASH_ENV >/dev/null; then
              echo "$line" >> $BASH_ENV
            fi

  invoke-lazy-sh:
    parameters:
      subcommand:
        type: string
    steps:
      - run:
          environment:
            TERM: xterm
          command: ./lazy.sh <<parameters.subcommand>>

  apt-update-and-install-common-deps:
    steps:
      - run: sudo apt update && sudo apt install gawk make

  restore-cache-gomod:
    steps:
      - restore_cache:
          key: go-mod-v4-{{ checksum "go.sum" }}
  save-cache-gomod:
    steps:
      - save_cache:
          key: go-mod-v4-{{ checksum "go.sum" }}
          paths:
            - "/go/pkg/mod"

  install-godep:
    steps:
      - apt-update-and-install-common-deps
      - invoke-lazy-sh:
          subcommand: godep

  install-docdep:
    steps:
      - apt-update-and-install-common-deps
      - run: sudo apt install python3 python3-pip libgirepository1.0-dev
      - invoke-lazy-sh:
          subcommand: docdep

  download-and-install-minio-client:
    steps:
      - setup-home-local-bin
      - restore_cache:
          key: minio-client-v2
      - run:
          shell: /bin/bash -eo pipefail
          command: |
            if which mc; then exit 0; fi
            sudo curl -sSL https://dl.min.io/client/mc/release/linux-amd64/archive/mc.RELEASE.2020-08-20T00-23-01Z \
              -o "$HOME/.local/bin/mc"
            sudo chmod +x "$HOME/.local/bin/mc"
      - save_cache:
          key: minio-client-v2
          paths:
            - "$HOME/.local/bin/mc"

  upload-minio:
    parameters:
      src:
        type: string
      dst:
        type: string
    steps:
      - run:
          shell: /bin/bash -eo pipefail
          when: always
          command: |
            if [ -n "$CIRCLE_PR_NUMBER" ]; then # CIRCLE_PR_NUMBER is guaranteed to be only present in forked PRs (external)
              echo "Forked PR detected. Sry, can't trust you with credentials to external artifact store, use CircleCI's instead."
              exit 0
            fi
            set -u # from now on

            mc config host add --api s3v4 zrepl-minio https://minio.cschwarz.com ${MINIO_ACCESS_KEY} ${MINIO_SECRET_KEY}

            # keep in sync with set-github-minio-status
            jobprefix=zrepl-ci-artifacts/${CIRCLE_SHA1}-pipeline-<<pipeline.number>>/${CIRCLE_JOB}

            # Upload artifacts
            mkdir -p ./artifacts
            mc cp -r <<parameters.src>> "zrepl-minio/$jobprefix/<<parameters.dst>>"

  set-github-minio-status:
    parameters:
      context:
        type: string
      description:
        type: string
      minio-dst:
        type: string
    steps:
      - run:
          shell: /bin/bash -eo pipefail
          command: |
            if [ -n "$CIRCLE_PR_NUMBER" ]; then # CIRCLE_PR_NUMBER is guaranteed to be only present in forked PRs (external)
              echo "Forked PR detected. Sry, can't trust you with credentials to external artifact store, use CircleCI's instead."
              exit 0
            fi
            set -u # from now on

            # keep in sync with with upload-minio command
            jobprefix=zrepl-ci-artifacts/${CIRCLE_SHA1}-pipeline-<<pipeline.number>>/${CIRCLE_JOB}
            # Push Artifact Link to GitHub
            REPO="zrepl/zrepl"
            COMMIT="${CIRCLE_SHA1}"
            JOB_NAME="${CIRCLE_JOB}"
            CONTEXT="<<parameters.context>>"
            DESCRIPTION="<<parameters.description>>"
            TARGETURL=https://minio.cschwarz.com/minio/"$jobprefix"/"<<parameters.minio-dst>>"
            curl "https://api.github.com/repos/$REPO/statuses/$COMMIT" \
              -H "Content-Type: application/json" \
              -H "Authorization: token $GITHUB_COMMIT_STATUS_TOKEN" \
              -X POST \
              -d '{"context":"'"$CONTEXT"'", "state": "success", "description":"'"$DESCRIPTION"'", "target_url":"'"$TARGETURL"'"}'


  trigger-pipeline:
    parameters:
      body_no_shell_subst:
        type: string
    steps:
      - run: |
          curl -X POST https://circleci.com/api/v2/project/github/zrepl/zrepl/pipeline \
            -H 'Content-Type: application/json' \
            -H 'Accept: application/json' \
            -H "Circle-Token: $ZREPL_BOT_CIRCLE_TOKEN" \
            --data '<<parameters.body_no_shell_subst>>'

parameters:
  do_ci:
    type: boolean
    default: true

  do_release:
    type: boolean
    default: false

  release_docker_baseimage_tag:
    type: string
    default: "1.15"

workflows:
  version: 2

  ci:
    when: << pipeline.parameters.do_ci >>
    jobs:
      - quickcheck-docs
      - quickcheck-go: &quickcheck-go-smoketest
          name: quickcheck-go-amd64-linux-1.15
          goversion: &latest-go-release "1.15"
          goos: linux
          goarch: amd64
      - test-go-on-latest-go-release:
          goversion: *latest-go-release
      - quickcheck-go:
          requires:
            - quickcheck-go-amd64-linux-1.15 #quickcheck-go-smoketest.name
          matrix: &quickcheck-go-matrix
            alias: quickcheck-go-matrix
            parameters:
              goversion: [*latest-go-release, "1.11"]
              goos: ["linux", "freebsd"]
              goarch: ["amd64", "arm64"]
            exclude:
              # don't re-do quickcheck-go-smoketest
              - goversion: *latest-go-release
                goos: linux
                goarch: amd64
              # not supported by Go 1.11
              - goversion: "1.11"
                goos: freebsd
                goarch: arm64

  release:
    when: << pipeline.parameters.do_release >>
    jobs:
      - release-build
      - release-deb:
          requires:
            - release-build
      - release-rpm:
          requires:
            - release-build
      - release-upload:
          requires:
            - release-build
            - release-deb
            - release-rpm

  periodic:
    triggers:
      - schedule:
          cron: "45 15 * * *"
          filters:
            branches:
              only:
                - master
                - stable
                - problame/circleci-build
    jobs:
      - periodic-trigger-pipeline

  zrepl.github.io:
    jobs:
      - publish-zrepl-github-io:
          filters:
            branches:
              only:
                - stable

jobs:
  quickcheck-docs:
    docker:
      - image: cimg/base:2020.08
    steps:
      - checkout
      - install-docdep
      - run: make docs

      - store_artifacts:
          path: artifacts
      - download-and-install-minio-client
      - upload-minio:
          src: artifacts
          dst: ""
      - set-github-minio-status:
          context: artifacts/${CIRCLE_JOB}
          description: artifacts of CI job ${CIRCLE_JOB}
          minio-dst: ""

  quickcheck-go:
    parameters:
      goversion:
        type: string
      goos:
        type: string
      goarch:
        type: string
    docker:
      - image: circleci/golang:<<parameters.goversion>>
    environment:
      GOOS: <<parameters.goos>>
      GOARCH: <<parameters.goarch>>

    steps:
      - checkout

      - restore-cache-gomod
      - run: go mod download
      - run: cd build && go mod download
      - save-cache-gomod

      - install-godep
      - run: make formatcheck
      - run: make generate-platform-test-list
      - run: make zrepl-bin test-platform-bin
      - run: make vet
      - run: make lint

      - download-and-install-minio-client
      - run: rm -f artifacts/generate-platform-test-list
      - store_artifacts:
          path: artifacts
      - upload-minio:
          src: artifacts
          dst: ""
      - set-github-minio-status:
          context: artifacts/${CIRCLE_JOB}
          description: artifacts of CI job ${CIRCLE_JOB}
          minio-dst: ""

  test-go-on-latest-go-release:
    parameters:
      goversion:
        type: string
    docker:
      - image: circleci/golang:<<parameters.goversion>>
    steps:
      - checkout
      - restore-cache-gomod
      - run: make test-go
      # don't save-cache-gomod here, test-go doesn't pull all the dependencies

  release-build:
    machine: true
    steps:
      - checkout
      - run: make release-docker RELEASE_DOCKER_BASEIMAGE_TAG=<<pipeline.parameters.release_docker_baseimage_tag>>
      - persist_to_workspace:
          root: .
          paths: [.]
  release-deb:
    machine: true
    steps:
      - attach_workspace:
          at: .
      - run: make debs-docker
      - persist_to_workspace:
          root: .
          paths:
            - "artifacts/*.deb"

  release-rpm:
    machine: true
    steps:
      - attach_workspace:
          at: .
      - run: make rpms-docker
      - persist_to_workspace:
          root: .
          paths:
            - "artifacts/*.rpm"

  release-upload:
    docker:
      - image: cimg/base:2020.08
    steps:
      - attach_workspace:
          at: .
      - store_artifacts:
          path: artifacts
      - download-and-install-minio-client
      - upload-minio:
          src: artifacts
          dst: ""
      - set-github-minio-status:
          context: artifacts/release
          description: CI-generated release artifacts
          minio-dst: ""

  periodic-trigger-pipeline:
    docker:
      - image: cimg/base:2020.08
    steps:
      - trigger-pipeline:
          body_no_shell_subst: '{"branch":"master", "parameters": { "do_ci": true, "do_release": true }}'
      - trigger-pipeline:
          body_no_shell_subst: '{"branch":"stable", "parameters": { "do_ci": true, "do_release": true }}'

  publish-zrepl-github-io:
    docker:
      - image: cimg/python:3.7
    steps:
      - checkout
      - invoke-lazy-sh:
          subcommand: docdep
      - run:
          command: |
            git config --global user.email "me@cschwarz.com"
            git config --global user.name "zrepl-github-io-ci"

      # https://circleci.com/docs/2.0/add-ssh-key/#adding-multiple-keys-with-blank-hostnames
      - run: ssh-add -D
      # the default circleci ssh config only additional ssh keys for Host !github.com
      - run:
          command: |
            cat > ~/.ssh/config \<<EOF
            Host *
              IdentityFile /home/circleci/.ssh/id_rsa_458e62c517f6c480e40452126ce47421
            EOF
      - add_ssh_keys:
          fingerprints:
            # deploy key for zrepl.github.io
            - "45:8e:62:c5:17:f6:c4:80:e4:04:52:12:6c:e4:74:21"

      - run: bash -x docs/publish.sh -c -a