link-checker.yml

name: Link checker

on:
  workflow_dispatch:
  pull_request:
  push:
    branches:
      - main
  schedule:
    - cron: 0 0 * * 0

concurrency:
  group: links-checker
  cancel-in-progress: true

jobs:

  link-checker:
    runs-on: ubuntu-latest
    permissions:
      issues: write
      contents: read
      pull-requests: write
      
    steps:
    
      - uses: actions/checkout@v4

      - name: Restore lychee cache
        uses: actions/cache@v4
        with:
          path: .lycheecache
          key: cache-lychee-${{ github.sha }}
          restore-keys: cache-lychee-

      - name: Attach WireGuard connection
        shell: bash
        run: |
          sudo apt install resolvconf
          sudo apt install wireguard
          echo "${{ secrets.WIREGUARD_CONFIG }}" > wg0.conf
          sudo chmod 600 wg0.conf
          sudo wg-quick up ./wg0.conf
      
      - name: Run lychee
        uses: lycheeverse/lychee-action@v2.2.0
        id: lychee
        with:
          args: "--base . --cache --max-cache-age 1d ."

      - name: Detach WireGuard connection
        shell: bash
        if: always()
        run: sudo wg-quick down ./wg0.conf
      
      - name: Create issue
        if: always() && github.event_name != 'pull_request' && steps.lychee.outputs.exit_code != 0
        uses: peter-evans/create-issue-from-file@v5
        with:
          title: 🔗✅ Link checker report
          labels: |
            🐛 bug
            🔗 link checker
            good first issue
            help wanted
            hacktoberfest
          content-filepath: ./lychee/out.md

      - name: Update PR with comment
        uses: mshick/add-pr-comment@v2
        if: always() && github.event_name == 'pull_request' && steps.lychee.outputs.exit_code != 0
        with:
          refresh-message-position: true
          message-id: 'link-checker-result'
          message-path: ./lychee/out.md