import { memo } from "react";
import { Handle, Position, type NodeProps } from "@xyflow/react";
import type { ErdColumn } from "@/types";
import { KeyRound, Link } from "lucide-react";

export interface ErdTableNodeData {
  label: string;
  schema: string;
  columns: ErdColumn[];
  fkColumnNames: string[];
  [key: string]: unknown;
}

function ErdTableNodeComponent({ data }: NodeProps) {
  const { label, columns, fkColumnNames } = data as unknown as ErdTableNodeData;

  return (
    <div className="min-w-[220px] rounded-lg border border-border bg-card text-card-foreground shadow-md">
      <div className="rounded-t-lg border-b bg-primary/10 px-3 py-2 text-xs font-bold tracking-wide text-primary">
        {label}
      </div>
      <div className="divide-y divide-border/50">
        {(columns as ErdColumn[]).map((col, i) => (
          <div key={i} className="flex items-center gap-1.5 px-3 py-1 text-[11px]">
            {col.is_primary_key ? (
              <KeyRound className="h-3 w-3 shrink-0 text-amber-500" />
            ) : (fkColumnNames as string[]).includes(col.name) ? (
              <Link className="h-3 w-3 shrink-0 text-blue-400" />
            ) : (
              <span className="h-3 w-3 shrink-0" />
            )}
            <span className="font-medium">{col.name}</span>
            <span className="ml-auto text-muted-foreground">{col.data_type}</span>
            {col.is_nullable && (
              <span className="text-muted-foreground/60">?</span>
            )}
          </div>
        ))}
      </div>
      <Handle
        type="target"
        position={Position.Left}
        className="!w-1.5 !h-1.5 !bg-primary !opacity-0 hover:!opacity-100 !border-none !min-w-0 !min-h-0"
      />
      <Handle
        type="source"
        position={Position.Right}
        className="!w-1.5 !h-1.5 !bg-primary !opacity-0 hover:!opacity-100 !border-none !min-w-0 !min-h-0"
      />
    </div>
  );
}

export const ErdTableNode = memo(ErdTableNodeComponent);