version: 2.1

executors:
  py:
    docker:
      - image: circleci/python:latest
    working_directory: ~/repo
  go:
    docker:
      - image: circleci/golang:latest
    working_directory: ~/repo

workflows:
  version: 2
  ci:
    jobs:
      - checkout:
          filters:
            branches:
              only: /.*/
            tags:
              only: /.*/
      - linting:
          requires:
            - checkout
          filters:
            branches:
              only: /.*/
            tags:
              only: /.*/
      - testing:
          requires:
            - checkout
          filters:
            branches:
              only: /.*/
            tags:
              only: /.*/
      - build:
          requires:
            - testing
            - linting
          filters:
            branches:
              only: /.*/
            tags:
              ignore: /^v[0-9]+(\.[0-9]+)*$/
      - publishing:
          requires:
            - testing
            - linting
          filters:
            branches:
              ignore: /.*/
            tags:
              only: /^v[0-9]+(\.[0-9]+)*$/
      - publish-docs:
          requires:
            - testing
            - linting
          filters:
            branches:
              ignore: /.*/
            tags:
              only: /^v[0-9]+(\.[0-9]+)*$/
jobs:
  checkout:
    executor: go
    steps:
      - checkout
      - persist_to_workspace:
          paths:
            - .
          root: ~/repo
  linting:
    executor: go
    steps:
      - attach_workspace:
          at: .
      - run: go build .
      - run: go get -u golang.org/x/lint/golint
      - run: golint -set_exit_status ./... 
  testing:
    executor: go
    steps:
      - attach_workspace:
          at: .
      - run: go build ./...
      - run: go get github.com/schrej/godacov
      - run: go test ./... -coverprofile coverage.out
      - run: godacov -t $CODACY_TOKEN -r ./coverage.out -c $CIRCLE_SHA1
  build:
    executor: go
    steps:
      - attach_workspace:
          at: .
      - setup_remote_docker
      - run:
          name: Install Goreleaser
          command: |
            cd .. && \
            wget https://github.com/goreleaser/goreleaser/releases/download/v0.104.1/goreleaser_Linux_x86_64.tar.gz && \
            tar -xvf goreleaser_Linux_x86_64.tar.gz && \
            ./goreleaser -v
      - run: 
          name: Execute goreleaser
          command: CGO_ENABLED=${CGO_ENABLED:-0} ../goreleaser --snapshot --skip-publish --debug
  publishing:
    executor: go
    steps:
      - attach_workspace:
          at: .
      - setup_remote_docker
      - run:
          name: Install Goreleaser
          command: |
            cd .. && \
            wget https://github.com/goreleaser/goreleaser/releases/download/v0.104.1/goreleaser_Linux_x86_64.tar.gz && \
            tar -xvf goreleaser_Linux_x86_64.tar.gz && \
            ./goreleaser -v
      - run:
          name: Login to docker hub
          command: |
            echo "$DOCKER_PASS" | docker login -u $DOCKER_USER --password-stdin 
      - run: 
          name: Execute goreleaser
          command: CGO_ENABLED=${CGO_ENABLED:-0} ../goreleaser --debug
      - run:
          name: Enable experimental docker features
          command: |
            mkdir -p ~/.docker/ && \
            echo '{"experimental": "enabled"}' > ~/.docker/config.json
      - run:
          name: Create manifest for version
          command: |
            docker manifest create \
              containrrr/watchtower:$(echo $CIRCLE_TAG | sed 's/^v*//') \
              containrrr/watchtower:amd64-$(echo $CIRCLE_TAG | sed 's/^v*//') \
              containrrr/watchtower:i386-$(echo $CIRCLE_TAG | sed 's/^v*//') \
              containrrr/watchtower:armhf-$(echo $CIRCLE_TAG | sed 's/^v*//') \
              containrrr/watchtower:arm64v8-$(echo $CIRCLE_TAG | sed 's/^v*//')
      - run:
          name: Annotate i386 version
          command: |
            docker manifest annotate \
              containrrr/watchtower:$(echo $CIRCLE_TAG | sed 's/^v*//') \
              containrrr/watchtower:i386-$(echo $CIRCLE_TAG | sed 's/^v*//') \
              --os linux \
              --arch 386
      - run:
          name: Annotate ARM version
          command: |
            docker manifest annotate \
              containrrr/watchtower:$(echo $CIRCLE_TAG | sed 's/^v*//') \
              containrrr/watchtower:armhf-$(echo $CIRCLE_TAG | sed 's/^v*//') \
              --os linux \
              --arch arm
      - run:
          name: Annotate ARM64 version
          command: |
            docker manifest annotate \
              containrrr/watchtower:$(echo $CIRCLE_TAG | sed 's/^v*//') \
              containrrr/watchtower:arm64v8-$(echo $CIRCLE_TAG | sed 's/^v*//') \
              --os linux \
              --arch arm64 \
              --variant v8
      - run:
          name: Create manifest for latest
          command: |
            docker manifest create \
              containrrr/watchtower:latest \
              containrrr/watchtower:amd64-latest \
              containrrr/watchtower:i386-latest \
              containrrr/watchtower:armhf-latest \
              containrrr/watchtower:arm64v8-latest
      - run:
          name: Annotate i386 latest
          command: |
            docker manifest annotate \
              containrrr/watchtower:latest \
              containrrr/watchtower:i386-latest \
              --os linux \
              --arch 386
      - run:
          name: Annotate ARM latest
          command: |
            docker manifest annotate \
              containrrr/watchtower:latest \
              containrrr/watchtower:armhf-latest \
              --os linux \
              --arch arm
      - run:
          name: Annotate ARM64 latest
          command: |
            docker manifest annotate \
              containrrr/watchtower:latest \
              containrrr/watchtower:arm64v8-latest \
              --os linux \
              --arch arm64 \
              --variant v8
      - run:
          name: Push manifests to Dockerhub
          command: |
            echo "$DOCKER_PASS" | docker login -u $DOCKER_USER --password-stdin &&
            docker manifest push containrrr/watchtower:$(echo $CIRCLE_TAG | sed 's/^v*//') && \
            docker manifest push containrrr/watchtower:latest
      - run:
          name: Sync Readme to Dockerhub
          command: |
            docker pull lsiodev/readme-sync && \
            docker run --rm=true \
              -e DOCKERHUB_USERNAME=$DOCKER_USER \
              -e DOCKERHUB_PASSWORD="$DOCKER_PASS" \
              -e GIT_REPOSITORY=containrrr/watchtower \
              -e DOCKER_REPOSITORY=containrrr/watchtower \
              -e GIT_BRANCH=master \
              lsiodev/readme-sync bash -c 'node sync'
  publish-docs:
    executor: py
    steps:
      - attach_workspace:
          at: .
      - run:
          name: Install prerequisites
          command: |
            sudo pip install \
              mkdocs \
              mkdocs-material \
              md-toc
      - add_ssh_keys:
          fingerprints:
            - "91:75:47:15:b2:8e:85:e5:67:0e:63:7f:22:d2:b4:6e"
      - run:
          name: Generate and publish
          command: |
            mkdir ~/.ssh && touch ~/.ssh/known_hosts;
            ssh-keyscan -H github.com >> ~/.ssh/known_hosts && \
              mkdocs gh-deploy