kind: pipeline
name: hello-world
type: docker

platform:
  os: linux
  arch: arm64

steps:
  - name: block-posts-containing-tk
    image: busybox
    commands:
#      # This is necessary because, if `grep ...` doesn't find anything, it will _return_ (not print) a value of 1
#      # (non-zero return codes indicating errors in Unix - since there are many more ways for something to go wrong
#      # than there are for it to go right!), and so the `files=` assignment will also return 1, and the whole operation
#      # will be considered a failure.
#      #
#      # Since a non-zero value is truthy in Linux, we can use the OR operator (`||`) to only execute the second command
#      # if the first one errors out. So, this line can be translated to English as:
#      # "Set the variable `files` to a list of all the files that contain `TK` - unless there aren't any, in which case
#      # set it to `FILES NOT FOUND"
      - files=$(grep -rl 'TK' blog/content/posts || echo "FILES NOT FOUND")
#      # We have to filter out (`grep -v`) the "marker" value of `FILES NOT FOUND`, otherwise the no-matches case would
#      # be recorded as having 1 matching file, leading to an error-out below.
#      # (I guess _technically_ there's an edge case in that, if I ever make a blog post titled "FILES NOT FOUND" _which also_
#      # contains the string `TK`, it would slip through this check. But that feels pretty unlikely - not least because spaces
#      # are very rare in my filesystem names - so I'm ok taking that risk)
      - count=$(wc -l <(echo "$files" | grep -v "FILES NOT FOUND") | awk '{print $1}')
      - if [[ "$count" -gt "0" ]]; then
      -   echo "Found TK in $count files:"
      -   echo $files
      -   exit 1 # TODO - and alerting via Matrix!
      - fi
  - name: build-blog
    image: alpine
    # Very unlikely to need updates, and pulling images seems slow on this setup -
    # can manually reset this if necessary
    pull: if-not-exists
    commands:
      # I considered caching this install in a pre-built image in registry,
      # but the install seems pretty quick!
      - apk add hugo git
      - git submodule init
      - git submodule update --recursive
      - hugo --source blog
  - name: docker-build-and-push
    image: thegeeklab/drone-docker-buildx # Absurd that this isn't offered as first-party!
    privileged: true
    settings:
      registry: gitea.scubbo.org
      username: scubbo
      password:
        from_secret: gitea_password
      repo: gitea.scubbo.org/scubbo/blog_helm
      tags:
        - ${DRONE_COMMIT_SHA:0:10}
      platforms:
        - linux/arm64
        - linux/amd64
  - name: auto-update-infra-repo
    image: gitea.scubbo.org/scubbo/auto-repo-update-drone-plugin:latest
    settings:
      branch: main
      git_repo: https://gitea.scubbo.org/scubbo/blog-infrastructure
      image_tag: ${DRONE_COMMIT_SHA:0:10}
      destination_file: helm/deployed-images/prod
      author_email: scubbojj@gmail.com
      author_name: Jack Jackson
      commit_message: "[Auto] Update Prod to ${DRONE_COMMIT_SHA:0:10}"
      access_token:
        from_secret: gitea_pat
  - name: update-argo
    image: curlimages/curl
    environment:
      ARGO_TOKEN:
        from_secret: argo_token
    commands:
      - "curl -sS -X POST \"argo-cd-argocd-server.argo.svc.cluster.local/api/v1/applications/blog-infrastructure/sync\" -H \"Authorization: Bearer ${ARGO_TOKEN}\" -H \"Content-Type: application/json\""
  - name: purge-cache
    image: curlimages/curl
    environment:
      CLOUDFLARE_TOKEN:
        from_secret: cloudflare_token
    commands:
      - "curl -sS -X POST \"https://api.cloudflare.com/client/v4/zones/c86d55d225ed973d5da45239beac2f99/purge_cache\" -H \"Authorization: Bearer ${CLOUDFLARE_TOKEN}\" -H \"Content-Type:application/json\" -d '{\"files\":[\"https://blog.scubbo.com\"]}'"
  - name: telegram_notification
    image: appleboy/drone-telegram
    when:
      status:
        - failure
        - success
    settings:
      token:
        from_secret: telegram_token
      to:
        from_secret: telegram_convo_id