update.yml

# This workflow checks if a new Zotero release is available. If so, it
# updates the snapcraft.yaml file and commits the changes to the repository.
# It runs every day at midnight UTC, and can also be triggered manually.

name: update
on:
  schedule:
    - cron: "0 0 * * *"
  workflow_dispatch:
jobs:
  update:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      
      - name: Detect Zotero Linux Version
        id: zotero
        run: |
          # Use curl to follow the redirect and capture the final URL
          url=$(curl -Ls -o /dev/null -w %{url_effective} 'https://www.zotero.org/download/client/dl?channel=release&platform=linux-x86_64')
          
          # Extract the version from the URL
          version=$(echo "$url" | grep -oP 'Zotero-\K[0-9.]+(?=_linux-x86_64.tar.bz2)')
          
          echo "Latest Zotero version for Linux: $version"
          echo "version=$version" >> $GITHUB_OUTPUT
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      
      - name: Get Zotero-Snap version
        id: snap
        uses: mikefarah/yq@v4.40.5
        with:
          cmd: yq '.version' snap/snapcraft.yaml

      - name: Compare versions
        run: |
          zotero=${{ steps.zotero.outputs.version }}
          snap=${{ steps.snap.outputs.result }}
          if [ "$zotero" == "$snap" ]; then
            echo Zotero-Snap is up to date
          else
            echo "New Zotero release available: $snap => $zotero"
            echo "new_version=$zotero" >> "$GITHUB_ENV"
          fi
      
      - name: Update snapcraft.yaml
        if: ${{ env.new_version }}
        run: |
          echo "Updating snapcraft.yaml to ${{ env.new_version }}"
          # Use sed instead of yq, because yq deletes empty lines
          sed -i "s/^version: .*/version: '${{ env.new_version }}'/" snap/snapcraft.yaml
      
      - name: Commit changes
        if: ${{ env.new_version }}
        uses: stefanzweifel/git-auto-commit-action@v5
        id: auto-commit-action
        with:
          commit_message: Update Zotero-Snap to ${{ env.new_version }}
          create_branch: true
          branch: ${{ env.new_version }}
      
      - name: Create PR
        if: steps.auto-commit-action.outputs.changes_detected == 'true'
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}        
        run: |
         sleep 3 # wait for github to get the created pr
         gh pr create -H "${{ env.new_version }}" -B master --title "update zotero to ${{ env.new_version }}" --body "Created by Github action"