{ lib, pkgs, inputs, config, namespace, ... }:

let
  # Import the plugin as a package derivation from your local repo
  # Pass the 'inputs' parameter explicitly to make wallpaper-engine-plugin-src available
  wallpaperEnginePkg = pkgs.callPackage ../../../packages/wallpaper-engine-kde-plugin/default.nix { inherit inputs; };
in {
  options.${namespace}.wallpaper-engine-kde-plugin.enable =
    lib.mkEnableOption "Enable Wallpaper Engine KDE plugin";

  config = lib.mkIf config.${namespace}.wallpaper-engine-kde-plugin.enable {
    # Add the imported package and helper script to systemPackages
    environment.systemPackages = [ 
      wallpaperEnginePkg 
      (pkgs.writeShellScriptBin "wallpaper-engine-kde-setup" ''
        #!/usr/bin/env bash
        set -e
        
        STEAM_DIR="$HOME/.local/share/Steam"
        WORKSHOP_PATH="$STEAM_DIR/steamapps/workshop/content/431960"
        
        echo "Wallpaper Engine KDE Plugin Setup Helper"
        echo "========================================"
        
        # Check if Steam directory exists
        if [ -d "$STEAM_DIR" ]; then
          echo "✅ Steam directory found at: $STEAM_DIR"
          
          if [ -d "$WORKSHOP_PATH" ]; then
            echo "✅ Workshop content directory found at: $WORKSHOP_PATH"
            echo "   You can use this path in the wallpaper settings."
          else
            echo "⚠️  Workshop content directory not found at the expected location."
            echo "   Please locate your Steam workshop content for Wallpaper Engine (app ID 431960)"
          fi
        else
          echo "⚠️  Steam directory not found at: $STEAM_DIR"
          echo "   Please install Steam and Wallpaper Engine first."
        fi
        
        # Check symlinks
        if [ -L "$HOME/.local/share/plasma/wallpapers/com.github.catsout.wallpaperEngineKde" ]; then
          echo "✅ Plugin symlink is correctly set up"
        else
          echo "⚠️  Plugin symlink not found, attempting to create it..."
          mkdir -p "$HOME/.local/share/plasma/wallpapers"
          ln -sf /run/current-system/sw/share/plasma/wallpapers/com.github.catsout.wallpaperEngineKde \
                "$HOME/.local/share/plasma/wallpapers/com.github.catsout.wallpaperEngineKde"
          echo "   Done! Symlink created."
        fi
        
        echo ""
        echo "To use Wallpaper Engine wallpapers in KDE:"
        echo "1. Right-click on desktop → Configure Desktop and Wallpaper"
        echo "2. Select 'Wallpaper Engine' from the wallpaper type list"
        echo "3. Set the path to your workshop content directory"
      '')
    ];

    systemd.user.services.wallpaperEngineSymlink = {
      description = "Symlink Wallpaper Engine plugin for Plasma";
      wantedBy = [ "graphical-session.target" ];
      serviceConfig = {
        Type = "oneshot";
        ExecStartPre = "${pkgs.coreutils}/bin/mkdir -p %h/.local/share/plasma/wallpapers";
        ExecStart = "${pkgs.coreutils}/bin/ln -sfn /run/current-system/sw/share/plasma/wallpapers/com.github.catsout.wallpaperEngineKde %h/.local/share/plasma/wallpapers/com.github.catsout.wallpaperEngineKde";
        RemainAfterExit = true;
      };
    };
  };
}