name: "Update"

on:
  schedule:
    - cron: '8 */4 * * *' # At minute 8 past every 4th hour

jobs:
  updater:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Install WHOIS client
        run: sudo apt install -y whois parallel gawk

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.13'

      - name: Cache pip
        uses: actions/cache@v4
        with:
          path: ~/.cache/pip
          key: ${{ runner.os }}-pip-${{ hashFiles('utils/requirements.txt') }}
          restore-keys: |
            ${{ runner.os }}-pip-
            ${{ runner.os }}-

      - name: Install dependencies
        run: |
          pip install -r utils/requirements.txt

      - name: Download IPs
        run: |
          set -euo pipefail
          set -x
          find . -name downloader.sh | sort -h | awk '{print "Executing "$1"...";system("bash "$1)}'

      - name: Create All-In-One ranges
        run: |
          cat $(find . -name ipv4.txt | sort -h) | sort -V | uniq > all/ipv4.txt
          cat $(find . -name ipv6.txt | sort -h) | sort -V | uniq > all/ipv6.txt

      - name: Merge ipv4 Ranges
        run: |
          set -euo pipefail
          set -x
          find . -name ipv4.txt | sort -h | parallel --will-cite -j 1 echo "Merging '{}'"';'python utils/merge.py --source={} '|'  sort -V '>' {.}_merged.txt

      - name: Merge ipv6 Ranges
        run: |
          set -euo pipefail
          set -x
          find . -name ipv6.txt | sort -h | parallel --will-cite -j 1 echo "Merging '{}'"';'python utils/merge.py --source={} '|' sort -V '>' {.}_merged.txt

      - name: Commit files
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          set -euo pipefail

          git remote add github "https://${GITHUB_ACTOR}:${GITHUB_TOKEN}@github.com/${GITHUB_REPOSITORY}.git"
          git pull github ${GITHUB_REF} --ff-only

          # Get name & email from 1st commit (needs `fetch-depth: 0` in step `actions/checkout@v3`)
          git config --local user.email "$(git log --format='%ae' --reverse | head -1)"
          git config --local user.name "$(git log --format='%an' --reverse | head -1)"

          # try commit
          git add .
          if [ -z "$(git status --porcelain)" ]; then
            echo 'No changes'
            exit 0
          fi
          git commit -m "Auto-update ip ranges"

          # push changes
          git push github HEAD:${GITHUB_REF}