name: Triage open backlog

on:
  workflow_dispatch:
    inputs:
      dry_run:
        description: Preview without writing comments, labels, or closures
        type: boolean
        default: false
      limit:
        description: Maximum number of open reports to assess (1-100)
        required: false
        default: '100'

permissions:
  contents: read
  issues: write
  discussions: write

concurrency:
  group: triage-open-backlog
  cancel-in-progress: false

jobs:
  discover:
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.reports.outputs.matrix }}
      has_reports: ${{ steps.reports.outputs.has_reports }}
    steps:
      - id: reports
        env:
          GH_TOKEN: ${{ github.token }}
          TRIAGE_LIMIT: ${{ inputs.limit }}
        shell: bash
        run: |
          if [[ ! "$TRIAGE_LIMIT" =~ ^([1-9]|[1-9][0-9]|100)$ ]]; then
            echo 'limit must be between 1 and 100' >&2
            exit 1
          fi

          query='query($owner:String!,$name:String!){repository(owner:$owner,name:$name){issues(first:100,states:OPEN,orderBy:{field:CREATED_AT,direction:ASC}){nodes{number}} discussions(first:100,orderBy:{field:CREATED_AT,direction:ASC}){nodes{number closed}}}}'
          gh api graphql -f query="$query" -F owner="$GITHUB_REPOSITORY_OWNER" -F name="${GITHUB_REPOSITORY#*/}" > reports.json
          matrix=$(jq -c --argjson limit "$TRIAGE_LIMIT" '{include: (([.data.repository.issues.nodes[] | {kind: "issue", number}] + [.data.repository.discussions.nodes[] | select(.closed | not) | {kind: "discussion", number}])[:$limit])}' reports.json)
          echo "matrix=$matrix" >> "$GITHUB_OUTPUT"
          if [[ $(jq '.include | length' <<<"$matrix") -gt 0 ]]; then
            echo 'has_reports=true' >> "$GITHUB_OUTPUT"
          else
            echo 'has_reports=false' >> "$GITHUB_OUTPUT"
          fi

  assess:
    needs: discover
    if: needs.discover.outputs.has_reports == 'true'
    runs-on: ubuntu-latest
    timeout-minutes: 10
    strategy:
      fail-fast: true
      max-parallel: 1
      matrix: ${{ fromJSON(needs.discover.outputs.matrix) }}
    steps:
      - id: first_attempt
        continue-on-error: true
        uses: crmne/copilot-triage@v0
        with:
          copilot-token: ${{ secrets.COPILOT_GITHUB_TOKEN }}
          github-token: ${{ github.token }}
          kind: ${{ matrix.kind }}
          number: ${{ matrix.number }}
          dry-run: ${{ inputs.dry_run }}
          debounce-seconds: 0
      - if: steps.first_attempt.outcome == 'failure'
        uses: crmne/copilot-triage@v0
        with:
          copilot-token: ${{ secrets.COPILOT_GITHUB_TOKEN }}
          github-token: ${{ github.token }}
          kind: ${{ matrix.kind }}
          number: ${{ matrix.number }}
          dry-run: ${{ inputs.dry_run }}
          debounce-seconds: 0