# hosts/FredOS-Gaming.nix
{ config, pkgs, lib, ... }:
{
  config = lib.mkIf (config.networking.hostName == "FredOS-Gaming") {
    environment.systemPackages = with pkgs; [
      lutris
      heroic
    ];
    
    programs.steam = {
      enable = true;
      remotePlay.openFirewall = true;
      package = pkgs.steam.override {
        extraPkgs = pkgs: with pkgs; [
          adwaita-icon-theme
        ];
      };
    };
    
    # Steam icon fix script
    systemd.user.services.steam-icon-fix = {
      description = "Fix Steam Proton game icons";
      wantedBy = [ "default.target" ];
      after = [ "graphical-session.target" ];
      
      serviceConfig = {
        Type = "oneshot";
        RemainAfterExit = false;
        Nice = 19; # Run at low priority
      };
      
      script = ''
        STEAM_DIR="$HOME/.local/share/Steam"
        DESKTOP_DIR="$HOME/.local/share/applications"
        ICON_DIR="$HOME/.local/share/icons/hicolor"
        
        # Wait for system to settle
        sleep 10
        
        # Create icon theme index if it doesn't exist
        if [ ! -f "$ICON_DIR/index.theme" ]; then
            mkdir -p "$ICON_DIR"
            cat > "$ICON_DIR/index.theme" << 'EOF'
        [Icon Theme]
        Name=Hicolor
        Comment=Fallback icon theme
        Hidden=true
        Directories=48x48/apps,64x64/apps,128x128/apps,256x256/apps
        
        [48x48/apps]
        Size=48
        Context=Applications
        Type=Threshold
        
        [64x64/apps]
        Size=64
        Context=Applications
        Type=Threshold
        
        [128x128/apps]
        Size=128
        Context=Applications
        Type=Threshold
        
        [256x256/apps]
        Size=256
        Context=Applications
        Type=Threshold
        EOF
        fi
        
        # Track if we made any changes
        changes_made=false
        
        # Search all desktop files for steam_icon references
        ${pkgs.gnugrep}/bin/grep -l "Icon=steam_icon_" "$DESKTOP_DIR"/*.desktop 2>/dev/null | while read desktop_file; do
            # Extract the app_id from the Icon line
            app_id=$(${pkgs.gnugrep}/bin/grep "Icon=steam_icon_" "$desktop_file" | ${pkgs.gnused}/bin/sed 's/Icon=steam_icon_//')
            
            # Check if icon already exists
            if [ -f "$ICON_DIR/256x256/apps/steam_icon_$app_id.png" ]; then
                continue
            fi
            
            # Find the actual icon file
            icon_file=$(find "$STEAM_DIR/appcache/librarycache/$app_id" -name "*.jpg" 2>/dev/null | head -n 1)
            
            if [ -f "$icon_file" ]; then
                # Copy icon to multiple sizes for GNOME
                for size in 48x48 64x64 128x128 256x256; do
                    mkdir -p "$ICON_DIR/$size/apps/"
                    cp "$icon_file" "$ICON_DIR/$size/apps/steam_icon_$app_id.png"
                done
                
                changes_made=true
                echo "Fixed icon for $(basename "$desktop_file"): App ID $app_id"
            fi
        done
        
        # Only update cache if we made changes
        if [ "$changes_made" = true ]; then
            ${pkgs.gtk3}/bin/gtk-update-icon-cache -f "$ICON_DIR" 2>/dev/null || true
        fi
      '';
    };
    
    # Path watcher to trigger the fix when desktop files change
    systemd.user.paths.steam-icon-fix-watcher = {
      wantedBy = [ "default.target" ];
      pathConfig = {
        PathChanged = "%h/.local/share/applications";
        Unit = "steam-icon-fix.service";
      };
    };
    
    # Bootloader
    boot.loader.systemd-boot.enable = true;
    boot.loader.efi.canTouchEfiVariables = true;
    boot.loader.timeout = 1;
    
    system.autoUpgrade = {
      enable = true;
      dates = "daily";
      persistent = true;
      allowReboot = false;
      channel = "https://nixos.org/channels/nixos-unstable";
      flags = [
        "--upgrade"
        "--option" "tarball-ttl" "0"
      ];
    };
  };
}