main.yml

name: Update CDN assets

on:
  # https://unix.stackexchange.com/questions/519538/how-to-set-cron-job-for-every-5-hours
  schedule:
    - cron: '11 */1 * * *'
  workflow_dispatch:

jobs:
  publish:
    name: Update assets
    runs-on: ubuntu-latest
    steps:
      - name: Repo check
        run: |
          if [[ "$GITHUB_REPOSITORY_OWNER" != "dimisa-RUAdList" ]]; then
            echo "This GitHub Action is meant to deliver filter lists for RUAdList."
            echo "You shouldn't need to run this GitHub Action in your fork."
            echo "If you do, please customize the cron expression above, and"
            echo "the URLs below."
            exit 1
          fi
          exit 0
      - name: Clone RUAdListCDN
        uses: actions/checkout@v3
      - name: Build directory
        run: |
          BUILDDIR=$(mktemp -d)
          echo "BUILDDIR=$BUILDDIR" >> $GITHUB_ENV
          echo "Build directory is $BUILDDIR"
      - name: Copy shell script from uAssets
        run: |
          TMPDIR="$(mktemp -d)"
          git clone --depth=1 --single-branch --branch=master https://github.com/uBlockOrigin/uAssets.git "$TMPDIR"
          cp -v "$TMPDIR"/tools/make-easylist.mjs ${{ env.BUILDDIR }}/
          cp -v "$TMPDIR"/tools/need-patch.mjs ${{ env.BUILDDIR }}
          cp -v "$TMPDIR"/tools/make-diffpatch.sh ${{ env.BUILDDIR }}
          cp -v "$TMPDIR"/tools/update-diffpatches.sh ${{ env.BUILDDIR }}
      - name: Time check
        run: |
          UPDATE_PERIOD_IN_HOURS=5
          echo "CAN_DO=$(node ${{ env.BUILDDIR }}/need-patch.mjs delay="$UPDATE_PERIOD_IN_HOURS")" >> $GITHUB_ENV
      - name: Generate version string
        if: ${{ env.CAN_DO == 'yes' }}
        run: |
          TAGNAME=$(date -u "+%Y.%-m.%-d.")$(date -u "+%H*60+%M" | bc)
          echo "TAGNAME=$TAGNAME" >> $GITHUB_ENV
          echo "Version string is $TAGNAME"
      - name: Fetch lists from easylist/ruadlist
        if: ${{ env.CAN_DO == 'yes' }}
        run: |
          TMPDIR="$(mktemp -d)"
          git clone --depth=1 --single-branch --branch=master https://github.com/easylist/ruadlist "$TMPDIR"
          cp -v  "$TMPDIR"/*.txt "${{ env.BUILDDIR }}"
          cp -Rv "$TMPDIR"/advblock "${{ env.BUILDDIR }}"
      - name: Generate ruadlist.ubo.min.txt from RuAdList-uBO.txt
        if: ${{ env.CAN_DO == 'yes' }}
        run: |
          pushd ${{ env.BUILDDIR }}
          : > ruadlist.template
          echo "[uBlock Origin 1.0]" >> ruadlist.template
          echo "! Title: RU AdList for uBO only" >> ruadlist.template
          echo "! Expires: 4 days" >> ruadlist.template
          echo "! Last modified: %timestamp%" >> ruadlist.template
          echo "! Diff-Path: %diffpath%#ruadlist" >> ruadlist.template
          echo "! Diff-Expires: 5 hours" >> ruadlist.template
          echo "! License: https://github.com/dimisa-RUAdList/RUAdListCDN/blob/main/LICENSE" >> ruadlist.template
          echo >> ruadlist.template
          echo "%include ruadlist:RuAdList-uBO.txt%" >> ruadlist.template
          node ./make-easylist.mjs in=ruadlist.template out=ruadlist.ubo.min.txt minify=1
          popd
          cp ${{ env.BUILDDIR }}/ruadlist.ubo.min.txt lists/
      - name: Patch last-updated field
        if: ${{ env.CAN_DO == 'yes' }}
        run: |
          DATE=$(date -Ru)
          FILTER_LISTS=( "lists/ruadlist.ubo.min.txt" )
          for FILE in "${FILTER_LISTS[@]}"; do
            STAT=$(git diff --numstat $FILE | sed -r '/^1\s+1\s+/d')
            if [[ -n $STAT ]]; then
              sed -ir "0,/^! Last modified: /s/^\(! Last modified: \)%timestamp%/\\1$DATE/" $FILE
            else
              git checkout -q $FILE
            fi
          done
      - name: Create new patch
        if: ${{ env.CAN_DO == 'yes' }}
        run: |
          PATCHES_DIR="patches"
          ${{ env.BUILDDIR }}/make-diffpatch.sh "${{ env.TAGNAME }}" "$PATCHES_DIR"
      - name: Update existing patches
        if: ${{ env.CAN_DO == 'yes' }}
        run: |
          PATCHES_DIR="patches"
          FILTER_FILES=$(git ls-files --exclude-standard -- lists/*.min.txt)
          ${{ env.BUILDDIR }}/update-diffpatches.sh "$GITHUB_REPOSITORY" "$PATCHES_DIR" "$FILTER_FILES"
      - name: Commit changes, if any
        if: ${{ env.CAN_DO == 'yes' }}
        run: |
          if [[ -z $(git diff --name-only --cached) ]]; then exit 0; fi
          git config user.name "GitHub Actions: main"
          git config user.email "<>"
          git commit -m "Update modified CDN assets to ${{ env.TAGNAME }}"
          git push origin main
          git tag ${{ env.TAGNAME }}
          git push origin ${{ env.TAGNAME }}