"use client";

import { Button } from "@/components/ui/button";
import {
  LayoutGridIcon,
  ListIcon,
  RotateCwIcon,
  ScissorsIcon,
  ShuffleIcon,
  SlidersHorizontalIcon,
  TrashIcon,
} from "lucide-react";
import {
  findLockerEmptySpot,
  getAssetTypeLabel,
  getLockerGridOccupancy,
  getLockerItemFootprint,
  type LockerGridItem,
  lockerIsRotatable,
  lockerIsStackable,
} from "@/lib/locker";

interface LockerGridToolbarProps {
  gridWidth: number;
  gridHeight: number;
  items: LockerGridItem[];
  selectedItem: LockerGridItem | null;
  viewMode: "grid" | "list";
  onViewModeChange: (mode: "grid" | "list") => void;
  onAutoArrange: () => Promise<void>;
  onRotate: (entryId: string) => Promise<void>;
  onRemove: (entryId: string) => Promise<void>;
  onSplit: (entryId: string, amount: number) => Promise<void>;
  onCustomize: () => void;
}

export function LockerGridToolbar({
  gridWidth,
  gridHeight,
  items,
  selectedItem,
  viewMode,
  onViewModeChange,
  onAutoArrange,
  onRotate,
  onRemove,
  onSplit,
  onCustomize,
}: LockerGridToolbarProps) {
  const occupancy = getLockerGridOccupancy(items, gridWidth, gridHeight);
  const asset = selectedItem?.asset ?? null;
  const fp = selectedItem && asset ? getLockerItemFootprint(asset, selectedItem.rotated) : null;
  const displayName = selectedItem?.equipment?.customName?.trim() || asset?.name || null;
  const hasCustomName =
    selectedItem?.equipment?.customName?.trim() != null &&
    selectedItem.equipment.customName.trim() !== "";
  const canSplit =
    selectedItem && asset && fp
      ? findLockerEmptySpot(items, fp.width, fp.height, gridWidth, gridHeight) !== null
      : false;

  return (
    <div className="flex flex-col gap-3">
      <div className="flex items-center justify-between">
        <div className="flex items-center gap-2">
          <Button variant="outline" size="sm" onClick={onAutoArrange}>
            <ShuffleIcon className="size-3.5 mr-1" />
            Auto-Arrange
          </Button>
        </div>

        <div className="flex items-center gap-1">
          <Button
            variant={viewMode === "grid" ? "default" : "outline"}
            size="sm"
            onClick={() => onViewModeChange("grid")}
          >
            <LayoutGridIcon className="size-3.5" />
          </Button>
          <Button
            variant={viewMode === "list" ? "default" : "outline"}
            size="sm"
            onClick={() => onViewModeChange("list")}
          >
            <ListIcon className="size-3.5" />
          </Button>
        </div>
      </div>

      {selectedItem && asset && (
        <div className="flex items-center gap-3 p-2 rounded-md border bg-muted/30 text-xs">
          <div className="flex-1 min-w-0">
            <div className="font-medium truncate">{displayName}</div>
            <div className="text-muted-foreground">
              {selectedItem.quantity.toLocaleString()}× · {getAssetTypeLabel(asset.assetType)}
              {hasCustomName && asset && displayName !== asset.name && ` · as "${asset.name}"`}
              {fp && ` · ${fp.width}x${fp.height}`}
              {selectedItem.rotated && " · rotated"}
            </div>
          </div>
          <div className="flex items-center gap-1">
            {asset?.assetType === "weapon" && (
              <Button variant="outline" size="sm" onClick={onCustomize}>
                <SlidersHorizontalIcon className="size-3.5" />
                Customize
              </Button>
            )}
            {lockerIsRotatable(asset) && (
              <Button variant="outline" size="sm" onClick={() => onRotate(selectedItem.id)}>
                <RotateCwIcon className="size-3.5" />
              </Button>
            )}
            {lockerIsStackable(asset) && selectedItem.quantity > 1 && (
              <Button
                variant="outline"
                size="sm"
                disabled={!canSplit}
                onClick={() => onSplit(selectedItem.id, Math.floor(selectedItem.quantity / 2))}
              >
                <ScissorsIcon className="size-3.5" />
              </Button>
            )}
            <Button variant="outline" size="sm" onClick={() => onRemove(selectedItem.id)}>
              <TrashIcon className="size-3.5" />
            </Button>
          </div>
        </div>
      )}
    </div>
  );
}