version: 2.0
workflows:
  version: 2
  build:
    jobs:
      - build-1.11
      - build-1.12
      - build-1.13
      - build-latest
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?access_token=$GITHUB_COMMIT_STATUS_TOKEN" \
              -H "Content-Type: application/json" \
              -X POST \
              -d '{"context":"zrepl/publish-ci-artifacts", "state": "success", "description":"CI Build Artifacts for '"$JOB_NAME"'", "target_url":"https://minio.cschwarz.com/minio/zrepl-ci-artifacts/'"$COMMIT"'/"}'

  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