main.yml

name: Monthly Snapshot

on:
  workflow_dispatch:
  schedule:
    - cron: '0 0 1 * *'  # Runs at 00:00 UTC on the 1st of every month

env:
  user: FalsePhilosopher
  repo: badusb

jobs:
  snapshot:
    runs-on: ubuntu-latest

    steps:
    - name: Checkout repo with submodules
      uses: actions/checkout@v4
      with:
        submodules: recursive

    - name: Set date variables
      id: date
      run: echo "date=$(date +'%Y-%m-%d')" >> "$GITHUB_OUTPUT"

    - name: Install zeekstd
      run: |
        git clone https://github.com/rorosen/zeekstd.git /tmp/zeekstd
        cd /tmp/zeekstd
        cargo build -p zeekstd_cli --release
        sudo cp ./target/release/zeekstd /usr/local/bin/

    - name: Create a temporary directory for snapshot
      run: |
        mkdir -p /tmp/snapshot
        rsync -av --exclude='.git' --exclude='.gitmodules' --exclude='.github' ./ /tmp/snapshot/
        rm -rf *

    - name: Create tzst snapshot
      run: |
        cd /tmp/snapshot
        tar -I 'zeekstd -l 19' -cvf "$GITHUB_WORKSPACE/${{ env.repo }}-${{ steps.date.outputs.date }}.tzst" *

    - name: Check if archive > 2GB and split if needed
      id: check_size
      run: |
        filename="${{ env.repo }}-${{ steps.date.outputs.date }}.tzst"
        max_size=$((2 * 1024 * 1024 * 1024))
        actual_size=$(stat -c%s "$filename")

        if [ "$actual_size" -ge "$max_size" ]; then
          split -b 1996M "$filename" "${filename}."
          rm "$filename"
          echo "pattern=${filename}.*" >> "$GITHUB_OUTPUT"
          {
            echo 'body<<EOF'
            echo 'Automated snapshot for ${{ steps.date.outputs.date }}.'
            echo '```'
            echo "gh release download -p '${filename}.*' -R ${{ env.user }}/${{ env.repo }}"
            echo "cat ${filename}.* > \"${filename}\""
            echo "rm ${filename}.*"
            echo "ratarmount \"${filename}\""
            echo '```'
            echo 'EOF'
          } >> "$GITHUB_OUTPUT"
        else
          echo "pattern=${filename}" >> "$GITHUB_OUTPUT"
          {
            echo 'body<<EOF'
            echo 'Automated snapshot for ${{ steps.date.outputs.date }}.'
            echo '```'
            echo "gh release download -p '${filename}' -R ${{ env.user }}/${{ env.repo }}"
            echo "ratarmount \"${filename}\""
            echo '```'
            echo 'EOF'
          } >> "$GITHUB_OUTPUT"
        fi

    - name: Create GitHub Release
      uses: softprops/action-gh-release@v2
      with:
        name: "Snapshot ${{ steps.date.outputs.date }}"
        tag_name: "Snapshot-${{ steps.date.outputs.date }}"
        body: ${{ steps.check_size.outputs.body }}
        files: ${{ steps.check_size.outputs.pattern }}
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}