version: 2.0
workflows:
  version: 2
  build:
    jobs:
      - build-1.11
      - build-1.12
      - build-1.13
      - build-1.14
      - build-latest
      - test-build-in-docker
jobs:

  # build-latest serves as the template
  # we use YAML anchors & aliases to exchange the docker image (and hence Go version used for the build)
  build-latest: &build-latest
    description: Builds zrepl
    parameters:
      image:
        description: "the docker image that the job should use"
        type: string
    docker:
      - image: circleci/golang:latest
    environment:
      # required by lazy.sh
      TERM: xterm
    working_directory: /go/src/github.com/zrepl/zrepl
    steps:
      - run:
          name: Setup environment variables
          command: |
            # used by pip (for docs)
            echo 'export PATH="$HOME/.local/bin:$PATH"' >> $BASH_ENV
            # we use modules
            echo 'export GO111MODULE=on' >> $BASH_ENV

      - restore_cache:
          keys:
            - source
            - protobuf

      - checkout

      - save_cache:
          key: source
          paths:
            - ".git"
      
      # install deps
      - run: wget https://github.com/protocolbuffers/protobuf/releases/download/v3.6.1/protoc-3.6.1-linux-x86_64.zip
      - run: echo "6003de742ea3fcf703cfec1cd4a3380fd143081a2eb0e559065563496af27807  protoc-3.6.1-linux-x86_64.zip" | sha256sum -c
      - run: sudo unzip -d /usr protoc-3.6.1-linux-x86_64.zip
      - save_cache:
          key: protobuf
          paths:
            - "/usr/include/google/protobuf"
            
      - run: sudo apt update && sudo apt install python3 python3-pip libgirepository1.0-dev gawk
      - run: ./lazy.sh devsetup

      - run: make zrepl-bin
      - run: make vet
      - run: make test
      - run: make lint
      - run: make release


      - store_artifacts:
          path: ./artifacts/release
          when: always

      - 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
            
            # Download and install minio
            curl -sSL https://dl.minio.io/client/mc/release/linux-amd64/mc -o ${GOPATH}/bin/mc
            chmod +x ${GOPATH}/bin/mc
            mc config host add --api s3v4 zrepl-minio https://minio.cschwarz.com ${MINIO_ACCESS_KEY} ${MINIO_SECRET_KEY}
            
            # Upload artifacts
            echo "$CIRCLE_BUILD_URL" > ./artifacts/release/cirlceci_build_url
            mc cp -r artifacts/release "zrepl-minio/zrepl-ci-artifacts/${CIRCLE_SHA1}/${CIRCLE_JOB}/"

            # Push Artifact Link to GitHub
            REPO="zrepl/zrepl"
            COMMIT="${CIRCLE_SHA1}"
            JOB_NAME="${CIRCLE_JOB}"
            curl "https://api.github.com/repos/$REPO/statuses/$COMMIT" \
              -H "Content-Type: application/json" \
              -H "Authorization: token $GITHUB_COMMIT_STATUS_TOKEN" \
              -X POST \
              -d '{"context":"zrepl/publish-ci-artifacts", "state": "success", "description":"CI Build Artifacts for '"$JOB_NAME"'", "target_url":"https://minio.cschwarz.com/minio/zrepl-ci-artifacts/'"$COMMIT"'/"}'

      - run:
          shell: /bin/bash -euo pipefail
          command: |
            # Trigger Debian Package Build
            curl -v -X POST https://api.github.com/repos/zrepl/debian-binary-packaging/dispatches \
              -H 'Accept: application/vnd.github.v3+json' \
              -H "Authorization: token $ZREPL_DEBIAN_BINARYPACKAGIN_TRIGGER_BUILD_GITHUB_TOKEN" \
              --data '{"event_type": "push", "client_payload": { "zrepl_main_repo_commit": "'"$CIRCLE_SHA1"'", "go_version": "'"${CIRCLE_JOB##build-}"'" }}'

  build-1.11:
    <<: *build-latest
    docker:
    - image: circleci/golang:1.11

  build-1.12:
    <<: *build-latest
    docker:
    - image: circleci/golang:1.12

  build-1.13:
    <<: *build-latest
    docker:
    - image: circleci/golang:1.13

  build-1.14:
    <<: *build-latest
    docker:
    - image: circleci/golang:1.14

  # this job tries to mimic the build-in-docker instructions
  # given in docs/installation.rst
  #
  # However, CircleCI doesn't support volume mounts, so we have to copy
  # the source into the build-container by modifying the Dockerfile
  test-build-in-docker:
    description: Check that build-in-docker works
    docker:
      - image: circleci/golang:latest
    environment:
    working_directory: /go/src/github.com/zrepl/zrepl
    steps:
    - checkout
    - setup_remote_docker
    - run:
        name: (hacky) circleci doesn't allow volume mounts, so copy src to container
        command: echo "ADD . /src" >> build.Dockerfile
    - run:
        name: (hacky) commit modified Dockerfile to avoid failing git clean check in Makefile
        command: git -c user.name='circleci' -c user.email='circleci@localhost' commit -m 'CIRCLECI modified Dockerfile with zrepl src' --author 'autoauthor <circleci@localhost>' -- build.Dockerfile
    - run:
        name: build the build image (build deps)
        command: docker build -t zrepl_build -f build.Dockerfile .
    - run:
        name: try compiling
        command: docker run -it zrepl_build make release