check-base-update.yml

name: Check Base Image Updates

on:
  schedule:
    - cron: '0 2 * * *'  # Daily at 2 AM UTC
  workflow_dispatch:

jobs:
  check-update:
    name: Check for Sonarr Base Image Updates
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Check for base image updates
        id: check
        run: |
          echo "🔍 Checking for Sonarr base image updates..."
          
          # Get latest Sonarr version from LinuxServer API
          echo "📡 Fetching latest version from LinuxServer API..."
          LATEST_VERSION=$(curl -s "https://api.linuxserver.io/api/v1/images" | jq -r '.data.repositories.linuxserver[] | select(.name == "sonarr") | .version')
          
          if [ -z "$LATEST_VERSION" ]; then
            echo "❌ Failed to fetch latest version from API"
            exit 1
          else
            echo "✅ Latest Sonarr version from API: ${LATEST_VERSION}"
          fi
          echo "latest_version=${LATEST_VERSION}" >> $GITHUB_OUTPUT
          
          # Get current version from VERSION file
          echo "📄 Reading current version from VERSION file..."
          if [ -f VERSION ]; then
            source VERSION
            CURRENT_VERSION="${SONARR_VERSION}"
            echo "✅ Current version in repository: ${CURRENT_VERSION}"
          else
            echo "❌ VERSION file not found"
            exit 1
          fi
          echo "current_version=${CURRENT_VERSION}" >> $GITHUB_OUTPUT
          
          # Check if update is needed
          echo ""
          echo "🔄 Version comparison:"
          echo "   Current: ${CURRENT_VERSION}"
          echo "   Latest:  ${LATEST_VERSION}"
          
          if [ "${LATEST_VERSION}" != "${CURRENT_VERSION}" ]; then
            echo "✅ Update needed! New version available."
            echo "update_needed=true" >> $GITHUB_OUTPUT
          else
            echo "ℹ️  No update needed. Already on latest version."
            echo "update_needed=false" >> $GITHUB_OUTPUT
          fi

      - name: Update VERSION file
        if: steps.check.outputs.update_needed == 'true'
        run: |
          echo "📝 Updating VERSION file with new version..."
          echo "SONARR_VERSION=${{ steps.check.outputs.latest_version }}" > VERSION
          echo "✅ VERSION file updated to: ${{ steps.check.outputs.latest_version }}"
          
          # Show the change
          echo ""
          echo "📄 VERSION file content:"
          cat VERSION

      - name: Create Pull Request
        if: steps.check.outputs.update_needed == 'true'
        uses: peter-evans/create-pull-request@v5
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          commit-message: "chore: update Sonarr base image to ${{ steps.check.outputs.latest_version }}"
          title: "Update Sonarr base image to ${{ steps.check.outputs.latest_version }}"
          body: |
            ## 🚀 Automated Base Image Update
            
            This PR updates the Sonarr base image to version **`${{ steps.check.outputs.latest_version }}`**.
            
            ### 📋 Changes
            - Updated `VERSION` file from `${{ steps.check.outputs.current_version }}` to `${{ steps.check.outputs.latest_version }}`
            - This will trigger a new Docker image build with the updated Sonarr version
            
            ### 🔄 What happens next?
            1. Review the VERSION file change
            2. Merge this PR to trigger the build workflow
            3. The build workflow will:
               - Read the new version from the VERSION file
               - Build a new Docker image with Sonarr `${{ steps.check.outputs.latest_version }}`
               - Push to `ghcr.io/${{ github.repository }}` with tags:
                 - `latest`
                 - `${{ steps.check.outputs.latest_version }}-<date>`
            
            ### 📊 Version Information
            - **Previous Version**: `${{ steps.check.outputs.current_version }}`
            - **New Version**: `${{ steps.check.outputs.latest_version }}`
            - **Source**: LinuxServer.io API
            
            ---
            *🤖 This PR was automatically created by the base image update checker workflow.*
          branch: update-sonarr-${{ steps.check.outputs.latest_version }}
          delete-branch: true
          author: GitHub Actions <noreply@github.com>
          committer: Peter Farkas <peter@semmiseg.info>