# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# SPDX-License-Identifier: curl

name: 'Hacktoberfest'

'on':
  # this must not ever run on any other branch than master
  push:
    branches:
      - master

concurrency:
  # this should not run in parallel, so just run one at a time
  group: ${{ github.workflow }}

permissions: {}

jobs:
  # add hacktoberfest-accepted label to PRs opened starting from September 30th
  # till November 1st which are closed via commit reference from master branch.
  merged:
    name: 'Add hacktoberfest-accepted label'
    runs-on: ubuntu-latest
    permissions:
      issues: write          # To edit labels on PRs
      pull-requests: write   # To edit labels on PRs
    steps:
      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
        with:
          persist-credentials: false
          fetch-depth: 100

      - name: 'Check whether repo participates in Hacktoberfest'
        id: check
        env:
          GH_TOKEN: '${{ secrets.GITHUB_TOKEN }}'
        run: |
          gh config set prompt disabled && echo "label=$(
            gh repo view --json repositoryTopics --jq '.repositoryTopics[].name' | grep '^hacktoberfest$')" >> "$GITHUB_OUTPUT"

      - name: 'Search relevant commit message lines starting with Closes/Merges'
        if: ${{ steps.check.outputs.label == 'hacktoberfest' }}
        env:
          GITHUB_EVENT_BEFORE: '${{ github.event.before }}'
          GITHUB_EVENT_AFTER: '${{ github.event.after }}'
        run: |
          git log --format=email "${GITHUB_EVENT_BEFORE}..${GITHUB_EVENT_AFTER}" | \
            grep -Ei '^Close[sd]? ' | sort | uniq | tee log

      - name: 'Search for number-based PR references'
        if: ${{ steps.check.outputs.label == 'hacktoberfest' }}
        env:
          GH_TOKEN: '${{ secrets.GITHUB_TOKEN }}'
        run: |
          grep -Eo '#([0-9]+)' log | cut -d# -f2 | sort | uniq | xargs -t -n1 -I{} \
            gh pr view {} --json number,createdAt \
              --jq '{number, opened: .createdAt} | [.number, .opened] | join(":")' | tee /dev/stderr | \
            grep -Eo '^([0-9]+):[0-9]{4}-(09-30T|10-|11-01T)' | cut -d: -f1 | sort | uniq | xargs -t -n1 -I {} \
              gh pr edit {} --add-label 'hacktoberfest-accepted'

      - name: 'Search for URL-based PR references'
        if: ${{ steps.check.outputs.label == 'hacktoberfest' }}
        env:
          GH_TOKEN: '${{ secrets.GITHUB_TOKEN }}'
        run: |
          grep -Eo 'github.com/(.+)/(.+)/pull/([0-9]+)' log | sort | uniq | xargs -t -n1 -I{} \
            gh pr view 'https://{}' --json number,createdAt \
              --jq '{number, opened: .createdAt} | [.number, .opened] | join(":")' | tee /dev/stderr | \
            grep -Eo '^([0-9]+):[0-9]{4}-(09-30T|10-|11-01T)' | cut -d: -f1 | sort | uniq | xargs -t -n1 -I {} \
              gh pr edit {} --add-label 'hacktoberfest-accepted'