import { Skeleton } from "@repo/shadcn-ui/components/skeleton";
import {
  Table,
  TableBody,
  TableCell,
  TableHead,
  TableHeader,
  TableRow,
} from "@repo/shadcn-ui/components/table";
import type { ReactNode } from "react";
import { useRef } from "react";

import { hasCellContent } from "../lib/collection-cell-content";
import type { EntityListState } from "../lib/entity-list-state";

import { EntityListStatus } from "./entity-list-status";

export type CompactColumn<T> = {
  id: string;
  label: string;
  render: (item: T) => ReactNode;
  align?: "start" | "end";
};

/** Comparación contextual sin herramientas de exploración ni estado remoto propio. */
export function CompactTable<T extends { id: string }>({
  title,
  className,
  items,
  columns,
  emptyMessage,
  state,
  onRetry,
  retryLabel,
}: {
  title: string;
  className?: string;
  items: readonly T[];
  columns: readonly CompactColumn<T>[];
  emptyMessage: string;
  state?: EntityListState;
  onRetry?: () => Promise<unknown>;
  retryLabel?: string;
}) {
  const ref = useRef<HTMLDivElement>(null);
  const available = state?.status !== "loading" && state?.status !== "unavailable";

  return (
    <div className="min-w-0" data-slot="compact-table" ref={ref} tabIndex={-1}>
      {state && (
        <EntityListStatus
          onRetry={retryLabel ? onRetry : undefined}
          retryFocus={() => ref.current}
          retryLabel={retryLabel ?? ""}
          state={state}
        />
      )}
      <Table
        aria-busy={state?.status === "loading" || state?.status === "refreshing" || undefined}
        aria-label={title}
        className={className}
      >
        <TableHeader>
          <TableRow>
            {columns.map((column) => (
              <TableHead
                className={`px-2 font-medium ${column.align === "end" ? "text-right" : "text-left"}`}
                key={column.id}
                scope="col"
              >
                {column.label}
              </TableHead>
            ))}
          </TableRow>
        </TableHeader>
        <TableBody>
          {state?.status === "loading" && (
            <TableRow aria-hidden="true">
              {columns.map((column) => (
                <TableCell className="p-2" key={column.id}>
                  <Skeleton className="h-5 w-full" />
                </TableCell>
              ))}
            </TableRow>
          )}
          {available &&
            items.map((item) => (
              <TableRow data-entity-id={item.id} key={item.id}>
                {columns.map((column) => (
                  <TableCell
                    className={`px-2 py-1.5 whitespace-normal break-words ${column.align === "end" ? "text-right tabular-nums" : "text-left"}`}
                    key={column.id}
                  >
                    {cellContent(column.render(item))}
                  </TableCell>
                ))}
              </TableRow>
            ))}
          {available && items.length === 0 && (
            <TableRow>
              <TableCell className="p-2 text-muted-foreground" colSpan={columns.length}>
                {emptyMessage}
              </TableCell>
            </TableRow>
          )}
        </TableBody>
      </Table>
    </div>
  );
}

function cellContent(content: ReactNode) {
  return hasCellContent(content) ? content : "—";
}