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src/app/(app)/resins/_components/resin-columns.tsx

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+"use client";
+
+import { type ColumnDef } from "@tanstack/react-table";
+import { MoreHorizontal, Pencil, Archive, Trash2, FlaskConical } from "lucide-react";
+import { DataTableColumnHeader } from "@/components/shared/data-table-column-header";
+import { StatusBadge, getStockStatus } from "@/components/shared/status-badge";
+import { ColorSwatch } from "@/components/shared/color-swatch";
+import { Badge } from "@/components/ui/badge";
+import { Button } from "@/components/ui/button";
+import {
+  DropdownMenu,
+  DropdownMenuContent,
+  DropdownMenuItem,
+  DropdownMenuSeparator,
+  DropdownMenuTrigger,
+} from "@/components/ui/dropdown-menu";
+
+export interface ResinRow {
+  id: string;
+  name: string;
+  brand: string;
+  resinType: string;
+  color: string;
+  colorHex: string;
+  bottleSize: number;
+  usedML: number;
+  cost: number | null;
+  purchaseDate: Date | null;
+  notes: string | null;
+  archived: boolean;
+  vendor: { id: string; name: string } | null;
+  location: { id: string; name: string } | null;
+}
+
+interface ResinColumnsProps {
+  onEdit: (resin: ResinRow) => void;
+  onArchive: (id: string) => void;
+  onDelete: (id: string) => void;
+  onLogUsage: (resin: ResinRow) => void;
+  lowStockThreshold: number;
+}
+
+export function getResinColumns({
+  onEdit,
+  onArchive,
+  onDelete,
+  onLogUsage,
+  lowStockThreshold,
+}: ResinColumnsProps): ColumnDef<ResinRow, unknown>[] {
+  return [
+    {
+      id: "color",
+      header: "",
+      cell: ({ row }) => <ColorSwatch hex={row.original.colorHex} size="sm" />,
+      enableHiding: false,
+      size: 40,
+    },
+    {
+      accessorKey: "name",
+      header: ({ column }) => <DataTableColumnHeader column={column} title="Name" />,
+      cell: ({ row }) => {
+        const remaining = row.original.bottleSize - row.original.usedML;
+        const status = getStockStatus(
+          remaining,
+          row.original.bottleSize,
+          lowStockThreshold,
+          row.original.archived
+        );
+        return (
+          <div className="flex items-center gap-2">
+            <span className="font-medium">{row.original.name}</span>
+            <StatusBadge variant={status} />
+          </div>
+        );
+      },
+      enableHiding: false,
+    },
+    {
+      accessorKey: "brand",
+      header: ({ column }) => <DataTableColumnHeader column={column} title="Brand" />,
+      cell: ({ row }) => (
+        <span className="text-sm text-muted-foreground">{row.original.brand}</span>
+      ),
+    },
+    {
+      accessorKey: "resinType",
+      header: ({ column }) => <DataTableColumnHeader column={column} title="Type" />,
+      cell: ({ row }) => (
+        <Badge variant="secondary" className="text-xs">
+          {row.original.resinType}
+        </Badge>
+      ),
+    },
+    {
+      id: "remaining",
+      header: ({ column }) => <DataTableColumnHeader column={column} title="Remaining" />,
+      cell: ({ row }) => {
+        const remaining = row.original.bottleSize - row.original.usedML;
+        const percent =
+          row.original.bottleSize > 0
+            ? (remaining / row.original.bottleSize) * 100
+            : 0;
+        const isLow = percent <= lowStockThreshold;
+        return (
+          <div className="flex items-center gap-2 min-w-[120px]">
+            <div className="flex-1 h-2 rounded-full bg-muted overflow-hidden">
+              <div
+                className={`h-full rounded-full transition-all ${
+                  isLow ? "bg-orange-500" : "bg-primary"
+                }`}
+                style={{ width: `${Math.max(0, Math.min(100, percent))}%` }}
+              />
+            </div>
+            <span className="text-xs text-muted-foreground w-16 text-right">
+              {remaining.toFixed(0)} ml
+            </span>
+          </div>
+        );
+      },
+    },
+    {
+      id: "location",
+      header: "Location",
+      cell: ({ row }) => (
+        <span className="text-sm text-muted-foreground">
+          {row.original.location?.name ?? "\u2014"}
+        </span>
+      ),
+    },
+    {
+      id: "vendor",
+      header: "Vendor",
+      cell: ({ row }) => (
+        <span className="text-sm text-muted-foreground">
+          {row.original.vendor?.name ?? "\u2014"}
+        </span>
+      ),
+    },
+    {
+      accessorKey: "cost",
+      header: ({ column }) => <DataTableColumnHeader column={column} title="Cost" />,
+      cell: ({ row }) => (
+        <span className="text-sm text-muted-foreground">
+          {row.original.cost != null ? `\u20AC${row.original.cost.toFixed(2)}` : "\u2014"}
+        </span>
+      ),
+    },
+    {
+      id: "actions",
+      cell: ({ row }) => (
+        <DropdownMenu>
+          <DropdownMenuTrigger asChild>
+            <Button variant="ghost" size="icon" className="h-8 w-8">
+              <MoreHorizontal className="h-4 w-4" />
+            </Button>
+          </DropdownMenuTrigger>
+          <DropdownMenuContent align="end">
+            <DropdownMenuItem onClick={() => onEdit(row.original)}>
+              <Pencil className="mr-2 h-3.5 w-3.5" />
+              Edit
+            </DropdownMenuItem>
+            <DropdownMenuItem onClick={() => onLogUsage(row.original)}>
+              <FlaskConical className="mr-2 h-3.5 w-3.5" />
+              Log Usage
+            </DropdownMenuItem>
+            <DropdownMenuItem onClick={() => onArchive(row.original.id)}>
+              <Archive className="mr-2 h-3.5 w-3.5" />
+              {row.original.archived ? "Unarchive" : "Archive"}
+            </DropdownMenuItem>
+            <DropdownMenuSeparator />
+            <DropdownMenuItem
+              onClick={() => onDelete(row.original.id)}
+              className="text-destructive focus:text-destructive"
+            >
+              <Trash2 className="mr-2 h-3.5 w-3.5" />
+              Delete
+            </DropdownMenuItem>
+          </DropdownMenuContent>
+        </DropdownMenu>
+      ),
+      enableHiding: false,
+    },
+  ];
+}