port-issue.yaml

# create a backport/forwardport of an issue when "/backport <milestone>" is commented
name: Port issue
run-name: "Port issue ${{ github.event.issue.number }}: ${{ github.event.issue.title }}"

on:
  issue_comment:
    types:
      - created

jobs:
  port-issue:
    runs-on: ubuntu-latest
    if: contains(github.event.comment.body, '/backport') || contains(github.event.comment.body, '/forwardport')
    steps:
      - name: Check org membership
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          if gh api orgs/${GITHUB_REPOSITORY_OWNER}/members --paginate | jq -e --arg GITHUB_ACTOR "$GITHUB_ACTOR" '.[] | select(.login == $GITHUB_ACTOR)' > /dev/null; then
              echo "${GITHUB_ACTOR} is a member"
              echo "is_member=true" >> $GITHUB_ENV
          else
              echo "${GITHUB_ACTOR} is not a member of ${GITHUB_REPOSITORY_OWNER}" >> $GITHUB_STEP_SUMMARY
              echo "is_member=false" >> $GITHUB_ENV
          fi
      - name: Check milestone
        if: env.is_member == 'true'
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          ORIGINAL_ISSUE_NUMBER: ${{ github.event.issue.number }}
          COMMENT_BODY: ${{ github.event.comment.body }}
        run: |
          BODY_MILESTONE=$(echo "${COMMENT_BODY}" | awk '{ print $2 }')
          echo "BODY_MILESTONE '${BODY_MILESTONE}'"

          # Sanitize input
          MILESTONE=${BODY_MILESTONE//[^a-zA-Z0-9\-\.]/}
          echo "MILESTONE '${MILESTONE}'"

          if gh api repos/${GITHUB_REPOSITORY}/milestones --paginate | jq -e --arg MILESTONE "$MILESTONE" '.[] | select(.title == $MILESTONE)' > /dev/null; then
            echo "Milestone '${MILESTONE}' exists"
            echo "milestone_exists=true" >> $GITHUB_ENV
          else
            echo "Milestone '${MILESTONE}' does not exist" >> $GITHUB_STEP_SUMMARY
            gh issue comment -R ${GITHUB_REPOSITORY} ${ORIGINAL_ISSUE_NUMBER} --body "Not creating port issue, milestone ${MILESTONE} does not exist or is not an open milestone"
            echo "milestone_exists=false" >> $GITHUB_ENV
          fi
      - name: Port issue
        if: |
          env.is_member == 'true' &&
          env.milestone_exists == 'true'
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          ORIGINAL_ISSUE_NUMBER: ${{ github.event.issue.number }}
          COMMENT_BODY: ${{ github.event.comment.body }}
        run: |
          declare -a additional_cmd
          BODY=$(mktemp)
          ORIGINAL_ISSUE=$(gh issue view -R ${GITHUB_REPOSITORY} ${ORIGINAL_ISSUE_NUMBER} --json title,body,assignees)
          ORIGINAL_TITLE=$(echo "${ORIGINAL_ISSUE}" | jq -r .title)
          TYPE=$(echo "${COMMENT_BODY}" | awk '{ print $1 }' | sed -e 's_/__')
          MILESTONE=$(echo "${COMMENT_BODY}" | awk '{ print $2 }')
          NEW_TITLE="[${TYPE}] ${ORIGINAL_TITLE}"
          if [[ $MILESTONE =~ (v[0-9]\.[0-9]+) ]]; then
              NEW_TITLE="[${TYPE} ${MILESTONE}] ${ORIGINAL_TITLE}"
          fi
          additional_cmd+=("--label")
          additional_cmd+=("QA/None")
          ORIGINAL_LABELS=$(gh issue view -R ${GITHUB_REPOSITORY} ${ORIGINAL_ISSUE_NUMBER} --json labels --jq '.labels[].name' | grep -v '^\[zube\]:' | paste -sd "," -)
          if [ -n "$ORIGINAL_LABELS" ]; then
              additional_cmd+=("--label")
              additional_cmd+=("${ORIGINAL_LABELS}")
          fi
          ORIGINAL_PROJECT=$(gh issue view -R ${GITHUB_REPOSITORY} ${ORIGINAL_ISSUE_NUMBER} --json projectItems --jq '.projectItems[].title')
          if [ -n "$ORIGINAL_PROJECT" ]; then
              additional_cmd+=("--project")
              additional_cmd+=("${ORIGINAL_PROJECT}")
          fi
          ASSIGNEES=$(echo "${ORIGINAL_ISSUE}" | jq -r .assignees[].login)
          if [ -n "$ASSIGNEES" ]; then
              echo "Checking if assignee is member before assigning"
              DELIMITER=""
              NEW_ASSIGNEES=""
              for ASSIGNEE in $ASSIGNEES; do
                  if gh api orgs/${GITHUB_REPOSITORY_OWNER}/members --paginate | jq -e --arg GITHUB_ACTOR "$GITHUB_ACTOR" '.[] | select(.login == $GITHUB_ACTOR)' > /dev/null; then
                      echo "${ASSIGNEE} is a member, adding to assignees"
                      NEW_ASSIGNEES="${NEW_ASSIGNEES}${DELIMITER}${ASSIGNEE}"
                      DELIMITER=","
                  fi
              done
              if [ -n "$NEW_ASSIGNEES" ]; then
                  echo "Assignees for new issue: ${NEW_ASSIGNEES}"
                  additional_cmd+=("--assignee")
                  additional_cmd+=("${NEW_ASSIGNEES}")
              fi
          fi
          if [ -n "$MILESTONE" ]; then
              echo -e "This is a ${TYPE} issue for #${ORIGINAL_ISSUE_NUMBER}, automatically created via [GitHub Actions workflow]($GITHUB_SERVER_URL/$GITHUB_REPOSITORY/actions/runs/$GITHUB_RUN_ID) initiated by @${GITHUB_ACTOR}\n" > $BODY
              echo -e "\nOriginal issue body:\n" >> $BODY
              echo "${ORIGINAL_ISSUE}" | jq -r '.body[0:65536]' >> $BODY
              NEW_ISSUE=$(gh issue create -R "${GITHUB_REPOSITORY}" --title "${NEW_TITLE}" --body-file "${BODY}" -m "${MILESTONE}" "${additional_cmd[@]}")
              echo "Port issue created: ${NEW_ISSUE}" >> $GITHUB_STEP_SUMMARY
          fi