name: Close Topics

# No D1 push here, unlike Close Solved: D1 stores no topic completion column.
# Phase progress, the gate pools and the charts all derive from the problem
# rows, which close-solved already logs — a topic is finished exactly when its
# core problems are, so there is nothing left to reconcile.

on:
  # Close Solved closes problem issues with GITHUB_TOKEN, and token-driven
  # closes never fire `issues` events — so chain off its run instead.
  # Conclusion is not filtered: the script reconciles state, so running after a
  # partially successful run is safe and catches whatever it did close.
  workflow_run:
    workflows: [Close Solved]
    types: [completed]
  # Covers problem issues closed by hand in the UI.
  issues:
    types: [closed]
  workflow_dispatch:
    inputs:
      dry_run:
        description: Report finished topics without closing anything
        type: boolean
        default: false

permissions:
  contents: read
  issues: write

concurrency:
  group: close-topics
  cancel-in-progress: false

jobs:
  close:
    # The `issues` trigger fires for every issue in the repo; only closing a
    # problem sub-issue can ever complete a topic's core set.
    if: github.event_name != 'issues' || contains(github.event.issue.labels.*.name, 'problem')
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - uses: oven-sh/setup-bun@v2

      # No install step: the script only uses Bun builtins + fetch.
      - run: bun apps/cli/close-topics.ts
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          DRY_RUN: ${{ inputs.dry_run }}