name: Auto Update Zen Kernel

on:
  schedule:
    - cron: '0 12 * * *'
  workflow_dispatch:

jobs:
  update-kernel:
    runs-on: ubuntu-latest
    
    steps:
      - name: Checkout Repository
        uses: actions/checkout@v4
        
      - name: Install Dependencies
        run: sudo apt-get update && sudo apt-get install -y curl jq
        
      - name: Fetch Latest Zen Kernel Release
        id: get_release
        run: |
          echo "Fetching latest zen-kernel release..."
          RELEASES=$(curl -s https://api.github.com/repos/zen-kernel/zen-kernel/releases?per_page=50)
          
          LATEST_RELEASE=$(echo "$RELEASES" | jq -r '[.[] | select(.tag_name | test("^v\\d+\\.\\d+(\\.\\d+)?-lqx\\d+$"))] | sort_by(.published_at) | reverse | .[0]')
          
          if [ "$LATEST_RELEASE" = "null" ]; then
            echo "No stable release found"
            exit 0
          fi
          
          TAG_NAME=$(echo "$LATEST_RELEASE" | jq -r '.tag_name')
          VERSION=$(echo "$TAG_NAME" | sed 's/^v\([0-9.]*\)-lqx.*/\1/')
          LQX=$(echo "$TAG_NAME" | sed 's/.*-lqx\([0-9]*\)$/\1/')
          VERSION_KEY=$(echo "$VERSION" | sed 's/\([0-9]*\.[0-9]*\).*/\1/')
          
          echo "Latest release: $TAG_NAME"
          echo "Version: $VERSION, LQX: $LQX, Version Key: $VERSION_KEY"
          
          echo "tag_name=$TAG_NAME" >> $GITHUB_OUTPUT
          echo "version=$VERSION" >> $GITHUB_OUTPUT
          echo "lqx=$LQX" >> $GITHUB_OUTPUT
          echo "version_key=$VERSION_KEY" >> $GITHUB_OUTPUT
          
      - name: Update Templates
        id: update_templates
        run: |
          # Get values from previous step
          TAG_NAME="${{ steps.get_release.outputs.tag_name }}"
          VERSION="${{ steps.get_release.outputs.version }}"
          LQX="${{ steps.get_release.outputs.lqx }}"
          VERSION_KEY="${{ steps.get_release.outputs.version_key }}"
          
          if [ -z "$TAG_NAME" ]; then
            echo "No release data found, exiting"
            exit 0
          fi
          
          echo "Processing latest release: $TAG_NAME (version=$VERSION, lqx=$LQX, version_key=$VERSION_KEY)"
          
          ARCHIVE_URL="https://github.com/zen-kernel/zen-kernel/archive/refs/tags/${TAG_NAME}.tar.gz"
          
          echo "Downloading $ARCHIVE_URL"
          if curl -sL "$ARCHIVE_URL" -o "zen-kernel-${VERSION}.tar.gz"; then
            CHECKSUM=$(sha256sum "zen-kernel-${VERSION}.tar.gz" | awk '{print $1}')
            rm "zen-kernel-${VERSION}.tar.gz"
            echo "Checksum: $CHECKSUM"
          else
            echo "Failed to download $ARCHIVE_URL, exiting"
            exit 1
          fi
          
          UPDATED_VERSIONS=""
          CHANGED_FILES=""
          
          for compiler in clang gcc; do
            TEMPLATE_DIR="linux-${compiler}/linux${VERSION_KEY}-zen"
            TEMPLATE_FILE="$TEMPLATE_DIR/template"
            
            if [ -f "$TEMPLATE_FILE" ]; then
              echo "Checking existing template: $TEMPLATE_FILE"
              
              CURRENT_VERSION=$(grep '^version=' "$TEMPLATE_FILE" 2>/dev/null | cut -d= -f2 || echo "")
              CURRENT_LQX=$(grep '^lqx=' "$TEMPLATE_FILE" 2>/dev/null | cut -d= -f2 || echo "")
              CURRENT_CHECKSUM=$(grep '^checksum=' "$TEMPLATE_FILE" 2>/dev/null | cut -d= -f2 || echo "")
              
              echo "Current: version=$CURRENT_VERSION, lqx=$CURRENT_LQX"
              echo "New: version=$VERSION, lqx=$LQX"
              
              if [ "$CURRENT_VERSION" != "$VERSION" ] || [ "$CURRENT_LQX" != "$LQX" ] || [ "$CURRENT_CHECKSUM" != "$CHECKSUM" ]; then
                echo "Update needed for $TEMPLATE_FILE"
                
                sed -i "s/^version=.*/version=$VERSION/" "$TEMPLATE_FILE"
                sed -i "s/^lqx=.*/lqx=$LQX/" "$TEMPLATE_FILE"
                sed -i "s/^checksum=.*/checksum=$CHECKSUM/" "$TEMPLATE_FILE"
                
                if [ "$CURRENT_VERSION" != "$VERSION" ] || [ "$CURRENT_LQX" != "$LQX" ]; then
                  sed -i "s/^revision=.*/revision=1/" "$TEMPLATE_FILE"
                else
                  CURRENT_REV=$(grep '^revision=' "$TEMPLATE_FILE" 2>/dev/null | cut -d= -f2 || echo "1")
                  NEW_REV=$((CURRENT_REV + 1))
                  sed -i "s/^revision=.*/revision=$NEW_REV/" "$TEMPLATE_FILE"
                fi
                
                UPDATED_VERSIONS="$UPDATED_VERSIONS $VERSION_KEY-$compiler"
                CHANGED_FILES="$CHANGED_FILES $TEMPLATE_FILE"
                echo "Updated $TEMPLATE_FILE to version $VERSION-lqx$LQX"
              else
                echo "No update needed for $TEMPLATE_FILE"
              fi
            else
              echo "Template not found: $TEMPLATE_FILE - creating new template"
              
              REFERENCE_TEMPLATE=""
              REFERENCE_DIR=""
              if [ "$compiler" = "clang" ]; then
                REFERENCE_TEMPLATE=$(find linux-clang -name template -type f | sort -V | tail -1)
              else
                REFERENCE_TEMPLATE=$(find linux-gcc -name template -type f | sort -V | tail -1)
              fi
              
              if [ -n "$REFERENCE_TEMPLATE" ] && [ -f "$REFERENCE_TEMPLATE" ]; then
                REFERENCE_DIR=$(dirname "$REFERENCE_TEMPLATE")
                echo "Using reference template directory: $REFERENCE_DIR"
                
                cp -r "$REFERENCE_DIR"/* "$TEMPLATE_DIR/"
                echo "Copied files and patches from $REFERENCE_DIR to $TEMPLATE_DIR"
                
                sed -i "s/^pkgname=.*/pkgname=linux${VERSION_KEY}-zen/" "$TEMPLATE_FILE"
                sed -i "s/^version=.*/version=$VERSION/" "$TEMPLATE_FILE"
                sed -i "s/^lqx=.*/lqx=$LQX/" "$TEMPLATE_FILE"
                sed -i "s/^checksum=.*/checksum=$CHECKSUM/" "$TEMPLATE_FILE"
                sed -i "s/^revision=.*/revision=1/" "$TEMPLATE_FILE"
                
                sed -i "s/linux[0-9.]*-zen-headers_package/linux${VERSION_KEY}-zen-headers_package/g" "$TEMPLATE_FILE"
                sed -i "s/linux[0-9.]*-zen-dbg_package/linux${VERSION_KEY}-zen-dbg_package/g" "$TEMPLATE_FILE"
                
                HEADERS_DIR="linux-${compiler}/linux${VERSION_KEY}-zen-headers"
                DBG_DIR="linux-${compiler}/linux${VERSION_KEY}-zen-dbg"
                
                if [ ! -e "$HEADERS_DIR" ]; then
                  ln -s "linux${VERSION_KEY}-zen" "$HEADERS_DIR"
                  echo "Created symlink: $HEADERS_DIR -> linux${VERSION_KEY}-zen"
                fi
                
                if [ ! -e "$DBG_DIR" ]; then
                  ln -s "linux${VERSION_KEY}-zen" "$DBG_DIR"
                  echo "Created symlink: $DBG_DIR -> linux${VERSION_KEY}-zen"
                fi
                
                UPDATED_VERSIONS="$UPDATED_VERSIONS $VERSION_KEY-$compiler-new"
                CHANGED_FILES="$CHANGED_FILES $TEMPLATE_DIR"
                echo "Created new template: $TEMPLATE_FILE"
              else
                echo "No reference template found for $compiler"
              fi
            fi
          done
          
          echo "updated_versions=$UPDATED_VERSIONS" >> $GITHUB_OUTPUT
          echo "changed_files=$CHANGED_FILES" >> $GITHUB_OUTPUT
          echo "Updated versions: $UPDATED_VERSIONS"
          echo "Changed files: $CHANGED_FILES"
          
      - name: Commit and Push Changes
        run: |
          UPDATED="${{ steps.update_templates.outputs.updated_versions }}"
          CHANGED_FILES="${{ steps.update_templates.outputs.changed_files }}"
          
          if [ -n "$UPDATED" ] && [ -n "$CHANGED_FILES" ]; then
            git config user.name "Wizzard"
            git config user.email "rich@bandaholics.cash"
            
            echo "Adding changed files: $CHANGED_FILES"
            for item in $CHANGED_FILES; do
              if [ -f "$item" ] || [ -d "$item" ]; then
                git add "$item"
                echo "Added: $item"
              else
                echo "Warning: Item not found: $item"
              fi
            done
            
            if echo "$UPDATED" | grep -q "new"; then
              git add linux-clang/*-zen-headers linux-clang/*-zen-dbg linux-gcc/*-zen-headers linux-gcc/*-zen-dbg 2>/dev/null || true
              echo "Added symlinks for new templates"
            fi
            
            if git diff --cached --quiet; then
              echo "No changes to commit"
              exit 0
            fi
            
            if echo "$UPDATED" | grep -q "new"; then
              NEW_TEMPLATES=$(echo "$UPDATED" | tr ' ' '\n' | grep 'new' | sed 's/-new$//' | tr '\n' ' ')
              git commit -m "Add zen kernel templates for $NEW_TEMPLATES [auto]"
            else
              git commit -m "Update zen kernel templates: $UPDATED [auto]"
            fi
            
            git push
            
            echo "Changes committed and pushed"
          else
            echo "No updates needed"
          fi