name: Build All Color Schemes

on:
  push:
    paths:
      - "config/schemes.nix"
      - "config/scheme-utils.nix"
  workflow_dispatch:

jobs:
  build-schemes:
    runs-on: nixos
    env:
      HOSTNAME: server

    steps:
      - uses: actions/checkout@v4

      - name: Get available schemes
        id: schemes
        run: |
          SCHEMES=$(nix eval --raw --impure --expr '
            let
              pkgs = import <nixpkgs> {};
              inputs = {};
              utils = import ./scripts/scheme-utils.nix { inherit pkgs inputs; };
            in
            builtins.concatStringsSep " " utils.availableSchemes
          ')
          echo "schemes=$SCHEMES" >> $GITEA_OUTPUT
          echo "Available schemes: $SCHEMES"

      - name: Configure Attic cache
        run: |
          # Configure attic client to use your cache server
          attic login servidos http://127.0.0.1:2343 ${{ secrets.ATTIC_TOKEN }}

      - name: Build and push all schemes
        continue-on-error: true
        run: |
          echo "Building and pushing all schemes..."

          # Retry function for attic push commands
          retry_attic_push() {
            local max_attempts=5
            local attempt=1
            local command="$@"
            
            while [ $attempt -le $max_attempts ]; do
              echo "Attempt $attempt/$max_attempts: $command"
              if eval "$command"; then
                echo "✓ Successfully pushed to cache on attempt $attempt"
                return 0
              else
                local exit_code=$?
                echo "✗ Attempt $attempt failed with exit code $exit_code"
                if [ $attempt -lt $max_attempts ]; then
                  echo "Waiting 2 seconds before retry..."
                  sleep 2
                fi
                attempt=$((attempt + 1))
              fi
            done
            
            echo "⚠️ Failed to push to cache after $max_attempts attempts. Continuing anyway..."
            return 0  # Don't fail the pipeline
          }

          # Store original scheme
          ORIGINAL_SCHEME=$(grep -oP "scheme = schemesFile\.schemes\.\K\w+" config/stylix.nix)
          echo "Original scheme: $ORIGINAL_SCHEME"

          # Build and push each scheme
          for scheme in ${{ steps.schemes.outputs.schemes }}; do
            echo "========================================="
            echo "Processing scheme: $scheme"
            echo "========================================="

            # Update stylix.nix to use this scheme
            sed -i "s/scheme = schemesFile\.schemes\.\w\+;/scheme = schemesFile.schemes.$scheme;/" config/stylix.nix

            # Verify the change
            grep "scheme = schemesFile.schemes" config/stylix.nix

            # Build the configuration
            echo "Building $scheme..."
            nix build .#nixosConfigurations.${HOSTNAME}.config.system.build.toplevel \
              --out-link ./result-$scheme \
              --quiet

            # Push to cache with retry
            echo "Pushing $scheme to cache..."
            retry_attic_push "attic push servidos:nixos ./result-$scheme"

            # Also push using print-out-paths for better cache coverage
            build_path=$(nix build .#nixosConfigurations.${HOSTNAME}.config.system.build.toplevel \
              --print-out-paths \
              --quiet 2>/dev/null || echo "")
            if [ -n "$build_path" ]; then
              retry_attic_push "echo \"$build_path\" | attic push servidos:nixos --stdin"
            fi

            echo "✓ Completed $scheme"
            echo ""
          done

          # Restore original scheme
          echo "Restoring original scheme: $ORIGINAL_SCHEME"
          sed -i "s/scheme = schemesFile\.schemes\.\w\+;/scheme = schemesFile.schemes.$ORIGINAL_SCHEME;/" config/stylix.nix

          echo "========================================="
          echo "All schemes built and pushed successfully!"
          echo "========================================="

      - name: Summary
        run: |
          SCHEME_COUNT=$(echo "${{ steps.schemes.outputs.schemes }}" | wc -w)
          echo "✅ Color scheme builds completed successfully!"
          echo "- Built $SCHEME_COUNT schemes: ${{ steps.schemes.outputs.schemes }}"
          echo "- Pushed all builds to Atticd cache"
          echo ""
          echo "You can now switch schemes quickly without waiting for builds!"