add-label-by-query.yml

name: Add Label by Query

on:
  workflow_dispatch:
    inputs:
      query:
        description: Query that finds issues or pull requests to which the label should be added
        required: true
      label:
        description: Label that should be added to issues or pull requests matching the query
        required: true
      dry-run:
        description: If set to true, the workflow will only print expected actions
        required: false
        default: 'true'

jobs:
  add:
    runs-on: ubuntu-latest
    env:
      GITHUB_TOKEN: ${{ secrets.UCI_GITHUB_TOKEN }}
    steps:
      - name: Add label by query
        env:
          GITHUB_TOKEN: ${{ github.token }}
          QUERY: ${{ github.event.inputs.query }}
          LABEL: ${{ github.event.inputs.label }}
          DRY_RUN: ${{ github.event.inputs.dry-run }}
        uses: actions/github-script@v7
        with:
          result-encoding: string
          script: |
            const items = await github.paginate(github.rest.search.issuesAndPullRequests, {
              q: process.env.QUERY
            })
            for (const item of items) {
              const labels = item.labels.map(l => l.name)
              if (labels.includes(process.env.LABEL)) {
                core.debug(`Skipping because ${item.url} already contains ${process.env.LABEL}`)
                continue
              }
              if (process.env.DRY_RUN === 'true') {
                core.info(`Would have added ${process.env.LABEL} label to ${item.url}`)
                continue
              }
              const [_, owner, repo] = item.url.match(/repos\/(.+?)\/(.+?)\/issues/)
              try {
                await github.rest.issues.addLabels({
                  owner,
                  repo,
                  issue_number: item.number,
                  labels: [{
                    name: process.env.LABEL
                  }]
                })
                core.info(`Added ${process.env.LABEL} label to ${item.url}`)
              } catch(error) {
                core.error(`Couldn't add ${process.env.LABEL} label to ${item.url}, got: ${error}`)
              }
            }