create-issue.yml

name: Create an issue on the repository
on:
  workflow_call:
    secrets:
      GITHUB_PAT:
        description: 'The github token used to create the issue.'
        required: true
    inputs: 
      repository:
        description: 'The owner and repository name to create the issue on. For example, "CQCL/hugrverse-actions". Defaults to the current repository.'
        type: string
      title:
        description: 'The title of the issue.'
        required: true
        type: string
      body:
        description: 'The body of the issue.'
        required: true
        type: string
      unique-label:
        description: 'A label to check if the issue already exists. If the label is present, the issue will not be created.'
        required: true
        type: string
      other-labels:
        description: 'A list of space-separated labels to add to the issue.'
        required: false
        type: string
    outputs:
      created:
        description: 'Whether the issue was created. Returns false if the issue already exists.'
        value: ${{ jobs.post-issue.outputs.make-issue }}
      issue-number:
        description: 'The number of the created issue. If the issue already exists, this will be the number of the existing issue.'
        value: ${{ jobs.post-issue.outputs.issue-number }}

jobs:
  post-issue:
    runs-on: ubuntu-latest
    outputs:
      make-issue: ${{ steps.check-label.outputs.make-issue }}
      issue-number: ${{ steps.create-issue.outputs.issue-number || steps.check-label.outputs.issue-number }}
    env:
      GH_TOKEN: ${{ secrets.GITHUB_PAT }}
      GH_REPO: ${{ inputs.repository || github.repository }}
      UNIQUE_LABEL: ${{ inputs.unique-label }}
      OTHER_LABELS: ${{ inputs.other-labels || '' }}
    steps:
      - name: Check if the issue exists already
        id: check-label
        run: |
          previous_issue_number=$(gh issue list \
              --label "$UNIQUE_LABEL" \
              --json number \
              --jq '.[0].number')
            if [[ -n $previous_issue_number ]]; then
              echo "Issue already exists: $previous_issue_number"
              echo "make-issue=false" >> $GITHUB_OUTPUT
              echo "issue-number=$previous_issue_number" >> $GITHUB_OUTPUT
            else
              echo "Issue does not exist"
              echo "make-issue=true" >> $GITHUB_OUTPUT
            fi
      - name: Create a new issue
        id: create-issue
        if: steps.check-label.outputs.make-issue == 'true'
        run: |
          if [[ -z $OTHER_LABELS ]]; then
            labels="$UNIQUE_LABEL"
          else
            labels="$UNIQUE_LABEL,$OTHER_LABELS"
          fi
          new_issue_url=$(gh issue create \
            --title "$TITLE" \
            --label "$labels" \
            --body "$BODY")
          echo "Created issue: $new_issue_url"
          echo "issue-number=$(echo $new_issue_url | cut -d'/' -f7)" >> $GITHUB_OUTPUT
        env:
          TITLE: ${{ inputs.title }}
          BODY: ${{ inputs.body }}