# Azure Pipelines file, see https://aka.ms/yaml

# scheduled triggers are not supported in pipeline syntax yet, so it had to be
# set up from Azure UI
trigger: none
pr: none

jobs:
  - job: docs
    timeoutInMinutes: 50
    pool:
      name: 'linux-pool'
    steps:
      - checkout: self
      - bash: ci/dev-env-install.sh
        displayName: 'Build/Install the Developer Environment'
      - bash: ci/configure-bazel.sh
        displayName: 'Configure Bazel'
        env:
          IS_FORK: $(System.PullRequest.IsFork)
          GOOGLE_APPLICATION_CREDENTIALS_CONTENT: $(GOOGLE_APPLICATION_CREDENTIALS_CONTENT)
      - bash: |
          set -euo pipefail

          CUR_SHA=$(git rev-parse HEAD)

          robustly_download_nix_pkgs() {
            # In recent commits, this is part of the dev-env-install script.
            # However, we have to copy it here to apply it to older versions.
            NIX_FAILED=0
            for i in `seq 10`; do
              NIX_FAILED=0
              nix-build nix -A tools -A cached >$LOG 2>&1 || NIX_FAILED=1
              if [[ $NIX_FAILED -ne 0 ]] && [[ $(tail -n 3 $LOG) == *"unexpected end-of-file"* ]]; then
                echo "  Restarting nix-build due to failed cache download"
                continue
              fi
              break
            done
            if [[ $NIX_FAILED -ne 0 ]]; then
              exit 1
            fi
          }

          echo "Loading dev-env..."
          eval "$(dev-env/bin/dade-assist)"
          echo "Building docs listing"
          DOCDIR=$(Build.StagingDirectory)/docs
          mkdir -p $DOCDIR
          LOG=$(Build.StagingDirectory)/log.txt
          RELEASES=$(curl https://api.github.com/repos/digital-asset/daml/releases -s | jq -r '. | map(select(.prerelease == false)) | map(.tag_name)[]')
          LATEST=$(echo $RELEASES | awk '{print $1}')
          JSON_BODY=$(echo $RELEASES | sed -e 's/ /\n/g' | sed -e 's/v\(.*\)/"\1": "\1",'/g)
          echo "Building latest docs: $LATEST"
          git checkout $LATEST >$LOG 2>&1
          robustly_download_nix_pkgs
          bazel build //docs:docs >$LOG 2>&1
          tar xzf bazel-genfiles/docs/html.tar.gz --strip-components=1 -C $DOCDIR >$LOG 2>&1
          # We need to overwrite the versions.json compiled by the build
          echo "{${JSON_BODY%,}}" | jq '.' > $DOCDIR/versions.json
          mkdir -p $DOCDIR/${LATEST#v}
          tar xzf bazel-genfiles/docs/html.tar.gz --strip-components=1 -C $DOCDIR/${LATEST#v} >$LOG 2>&1
          for version in $(echo $RELEASES | sed -e 's/ /\n/g' | sed '1d'); do
            echo "Building older docs: $version"
            git checkout $version >$LOG 2>&1
            robustly_download_nix_pkgs
            bazel build //docs:docs >$LOG 2>&1
            mkdir -p $DOCDIR/${version#v}
            tar xzf bazel-genfiles/docs/html.tar.gz --strip-components=1 -C $DOCDIR/${version#v} >$LOG 2>&1
          done

          git checkout $CUR_SHA
          echo "Pushing to S3 bucket..."
          aws s3 sync $DOCDIR \
                      s3://docs-daml-com/ \
                      --delete \
                      --acl public-read \
                      --exclude '*.doctrees/*' \
                      --exclude '*.buildinfo'
          echo "Refreshing CloudFront cache..."
          aws cloudfront create-invalidation \
                         --distribution-id E1U753I56ERH55 \
                         --paths '/*'
          echo "Done."
        env:
          AWS_ACCESS_KEY_ID: $(AWS_ACCESS_KEY_ID)
          AWS_SECRET_ACCESS_KEY: $(AWS_SECRET_ACCESS_KEY)
      - task: PublishPipelineArtifact@0
        condition: always()
        inputs:
          targetPath: $(Build.StagingDirectory)/log.txt
          artifactName: "Logs"
      - bash: |
          set -euo pipefail
          MESSAGE=$(git log --pretty=format:%s -n1)
          curl -XPOST \
               -i \
               -H 'Content-type: application/json' \
               --data "{\"text\":\"<!here> *FAILED* Daily Docs: <https://dev.azure.com/digitalasset/daml/_build/results?buildId=$(Build.BuildId)|$MESSAGE>\n\"}" \
               $(Slack.URL)
        condition: and(failed(), eq(variables['Build.SourceBranchName'], 'master'))