import type { ReactNode } from "react";
import { useTranslation } from "react-i18next";

import { nextPageOnClick } from "../../lib/nextPage";
import type { HistoryList as HistoryListState } from "../../lib/useHistoryList";
import NavGrid from "../../components/ui/NavGrid";
import { Button } from "../../components/ui/Button";
import { LoadingState, StateMessage } from "../../components/ui/QueryState";

// The frame of a history list on the activity page — the runs, the admin actions, the server log:
// its own bar (if any), the rows or the honest state instead of them (a failed read is an error with a
// retry, never an empty list), a read that failed over rows still on screen, the count, and "Older".
// `HistoryFrame` draws it; each list says only what its failure and its "Older" are — the server log's
// count its filter facets and stop while Live (AdminLogs), the others not (HistoryList, below).

/** What a read that failed while rows stayed on screen means, and how to try it again. */
export interface FrameFailure {
  text: string;
  onRetry: () => void;
}

export function HistoryFrame({
  list,
  rowCount,
  header,
  failure,
  older,
  count,
  empty,
  rowsClassName = "",
  testId,
  children,
}: {
  /** The list's read. */
  list: {
    data?: unknown;
    isError: boolean;
    isLoading: boolean;
    isPlaceholderData: boolean;
    refetch: () => unknown;
  };
  rowCount: number;
  /** The list's own bar above the rows. */
  header?: ReactNode;
  failure: FrameFailure | null;
  /** "Older", when there is an older page to ask for. */
  older: { label: string; onClick: () => void; disabled: boolean } | null;
  /** "N runs shown", for the footer. */
  count: string;
  /** Shown when the filters match nothing. */
  empty: string;
  rowsClassName?: string;
  testId?: string;
  /** The rows. */
  children: ReactNode;
}) {
  const { t } = useTranslation();
  return (
    <div data-testid={testId} className="overflow-clip rounded-xl border border-border bg-bg">
      {header}
      {failure && (
        <StateMessage
          tone="error"
          compact
          onRetry={failure.onRetry}
          className="border-b border-border"
        >
          {failure.text}
        </StateMessage>
      )}
      <div
        className={`${rowsClassName} ${list.isPlaceholderData ? "opacity-60" : ""}`}
        data-testid={testId && `${testId}-lines`}
        aria-busy={list.isPlaceholderData}
      >
        {list.isError && !list.data ? (
          <StateMessage tone="error" onRetry={() => void list.refetch()}>
            {t("common.loadError")}
          </StateMessage>
        ) : list.isLoading ? (
          <LoadingState shape="table" />
        ) : rowCount === 0 ? (
          <StateMessage compact className="font-sans">
            {empty}
          </StateMessage>
        ) : (
          <NavGrid>{children}</NavGrid>
        )}
      </div>
      <div className="flex flex-wrap items-center justify-between gap-2 border-t border-border px-3 py-1.5 text-xs text-muted">
        <span>{count}</span>
        {older && (
          <Button variant="outline" size="xs" disabled={older.disabled} onClick={older.onClick}>
            {older.label}
          </Button>
        )}
      </div>
    </div>
  );
}

/** A history list read through `useHistoryList` (the runs, the admin actions). */
export default function HistoryList<T>({
  state,
  empty,
  count,
  children,
}: {
  state: HistoryListState<T>;
  /** Shown when the filters match nothing. */
  empty: string;
  /** "N runs shown", for the footer. */
  count: string;
  /** The rows, drawn from `state.rows`. */
  children: ReactNode;
}) {
  const { t } = useTranslation();
  const { list, rows, hasOlder } = state;
  const fetchOlder = () => void list.fetchNextPage(nextPageOnClick(list.isFetchingNextPage));
  // A read that failed while rows were on screen keeps them, and says what the failure means.
  const failure: FrameFailure | null = !list.data
    ? null
    : list.isFetchNextPageError
      ? { text: t("activity.olderFailed"), onRetry: fetchOlder }
      : list.isError
        ? { text: t("activity.stale"), onRetry: () => void list.refetch() }
        : null;
  return (
    <HistoryFrame
      list={list}
      rowCount={rows.length}
      failure={failure}
      older={
        hasOlder
          ? { label: t("activity.older"), onClick: fetchOlder, disabled: list.isFetchingNextPage }
          : null
      }
      count={count}
      empty={empty}
    >
      {children}
    </HistoryFrame>
  );
}