"use client";

import { cn } from "@/lib/utils";
import type { Card, PublicPlayerView } from "@/lib/minigames/poker";
import type { PokerSnapshot } from "@/app/(frontend)/minigames/poker/actions";
import { Badge } from "@/components/ui/badge";
import { Card as UiCard, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
import { CardView } from "./CardView";
import { PokerActionConsole } from "./PokerActionConsole";
import { PokerActionToolbar } from "./PokerActionToolbar";
import { PokerClock } from "./PokerClock";
import { PokerDeckOrigin } from "./PokerDeckOrigin";
import { PokerPopupBubble } from "./PokerPopups";
import { PokerSeat } from "./PokerSeat";
import type { ActivePokerPopup } from "./usePokerPopups";
import { isTopSeatPosition, seatPosition } from "./seatPosition";

export type SeatedSnapshot = PokerSnapshot & {
  readonly you: NonNullable<PokerSnapshot["you"]>;
};

export interface FeltCanvasActionProps {
  readonly starting: boolean;
  readonly leaving: boolean;
  readonly onStart: () => void;
  readonly onLeave: () => void;
}

interface PokerFeltCanvasProps {
  readonly snapshot: SeatedSnapshot;
  readonly onSnapshot: (snapshot: PokerSnapshot) => void;
  readonly handLabel: string | null;
  readonly handTier: number | null;
  readonly bestCardKeys: ReadonlySet<string>;
  readonly actionProps: FeltCanvasActionProps;
  readonly onActionFeedback: () => void;
  readonly popups: readonly ActivePokerPopup[];
  readonly fullscreen?: boolean;
}

function cardKey(card: Card): string {
  return `${card.rank}-${card.suit}`;
}

function signedAmount(value: number): string {
  return `${value >= 0 ? "+" : ""}${value.toLocaleString()}`;
}

function PlacementBoard({ view }: { readonly view: SeatedSnapshot["you"] }) {
  const placements = [...(view.finalPlacements ?? [])].sort((a, b) => a.placement - b.placement);

  return (
    <UiCard className="w-full max-w-sm rounded-none border-white/20 bg-black/55 text-white">
      <CardHeader className="p-4 pb-2">
        <CardTitle className="text-sm uppercase tracking-wider">Final placements</CardTitle>
      </CardHeader>
      <CardContent className="p-4 pt-0">
        <ol className="flex flex-col gap-2">
          {placements.map((placement) => {
            const player = view.players.find((item) => item.seatId === placement.seatId);
            return (
              <li
                key={placement.seatId}
                className="flex items-center justify-between gap-3 text-sm"
              >
                <span className="font-mono text-muted-foreground">{placement.placement}.</span>
                <span className="min-w-0 flex-1 truncate font-medium">
                  {player?.name ?? `Seat ${placement.seatId + 1}`}
                </span>
                <span className="font-mono tabular-nums text-muted-foreground">
                  {player?.stack.toLocaleString() ?? "0"}
                </span>
              </li>
            );
          })}
        </ol>
      </CardContent>
    </UiCard>
  );
}

export function PokerFeltCanvas({
  snapshot,
  onSnapshot,
  handLabel,
  handTier,
  bestCardKeys,
  actionProps,
  onActionFeedback,
  popups,
  fullscreen = false,
}: PokerFeltCanvasProps) {
  const view = snapshot.you;
  const winnerSeats = new Set(view.showdown?.pots.flatMap((pot) => pot.winnerSeats) ?? []);
  const result = view.showdown?.results.find((item) => item.seatId === view.viewerSeat);
  const hasHint = handLabel !== null;
  const opponents = view.players.filter((player) => player.seatId !== view.viewerSeat);
  const viewerPlayer = view.players.find((player) => player.seatId === view.viewerSeat);
  const popupsForSeat = (seatId: number): readonly ActivePokerPopup[] =>
    popups.filter((popup) => popup.seatId === seatId && popup.tone !== "leave");
  const viewerPopups = popupsForSeat(view.viewerSeat);
  const tableAnnouncements = popups.filter((popup) => popup.tone === "leave");

  return (
    <div className="poker-table-stage">
      <div
        className={cn(
          "poker-felt-table relative min-h-[36rem] overflow-hidden p-4 sm:min-h-[42rem]",
          fullscreen && "poker-felt-fullscreen",
        )}
      >
        {opponents.map((player: PublicPlayerView, opponentIndex) => {
          const positionClass = seatPosition(opponentIndex, opponents.length);
          return (
            <div
              key={player.seatId}
              className={cn(
                "poker-seat-slot absolute z-10 w-36 max-w-[34%] sm:w-52",
                positionClass,
              )}
            >
              <PokerSeat
                player={player}
                isCurrentUser={false}
                isActing={view.phase === "betting" && player.seatId === view.toActSeat}
                isWinner={winnerSeats.has(player.seatId)}
                showHoleCards={view.phase !== "hand-complete" && view.phase !== "game-complete"}
              />
              {popupsForSeat(player.seatId).length > 0 && (
                <div
                  className={cn(
                    "poker-popup-stack",
                    isTopSeatPosition(positionClass) && "poker-popup-stack-below",
                  )}
                  aria-hidden="true"
                >
                  {popupsForSeat(player.seatId).map((popup) => (
                    <PokerPopupBubble key={popup.key} popup={popup} />
                  ))}
                </div>
              )}
              <div className="pointer-events-none absolute -top-2.5 left-1/2 z-20 flex -translate-x-1/2 gap-1">
                {player.seatId === view.buttonSeat && (
                  <span className="poker-dealer-button flex size-6 items-center justify-center rounded-full border text-xs font-bold">
                    D
                  </span>
                )}
                {player.seatId === view.smallBlindSeat && <Badge variant="secondary">SB</Badge>}
                {player.seatId === view.bigBlindSeat && <Badge variant="secondary">BB</Badge>}
              </div>
            </div>
          );
        })}

        <div className="poker-table-center absolute left-1/2 top-1/2 z-10 flex w-[min(26rem,72%)] -translate-x-1/2 -translate-y-1/2 flex-col items-center gap-2 text-white">
          <PokerDeckOrigin />
          <div className="poker-pot-plaque">
            <span className="poker-console-kicker">Pot</span>
            <strong className="font-mono text-lg tabular-nums">
              {view.potTotal.toLocaleString()}
            </strong>
          </div>
          <div
            className="poker-community-cards flex flex-wrap justify-center gap-1"
            aria-label="Community cards"
          >
            {view.communityCards.length > 0 ? (
              view.communityCards.map((card, index) => {
                const isBestCard = bestCardKeys.has(cardKey(card));
                return (
                  <CardView
                    key={`${card.rank}-${card.suit}`}
                    card={card}
                    size="md"
                    dealIndex={index + 1}
                    highlighted={hasHint && isBestCard}
                    dimmed={hasHint && !isBestCard}
                    className="poker-card-community"
                  />
                );
              })
            ) : (
              <span className="font-mono text-xs uppercase tracking-[0.2em] text-white/55">
                Community cards
              </span>
            )}
          </div>
          {view.phase === "betting" && (
            <div className="poker-table-turn-clock">
              <PokerClock deadline={snapshot.turnDeadline} totalMs={view.config.turnTimeoutMs} />
            </div>
          )}

          {(view.phase === "showdown" || view.phase === "hand-complete") && (
            <div
              className="flex w-full flex-col items-center gap-1 border border-white/15 bg-black/35 px-3 py-2 text-center"
              aria-live="polite"
            >
              <p className="font-semibold">
                {view.phase === "showdown" ? "Showdown" : "Hand complete"}
              </p>
              <p className="text-sm text-white/70">
                {result
                  ? `Your result: ${signedAmount(result.netChange)} chips`
                  : "The hand is settled."}
              </p>
              {snapshot.nextHandAt && (
                <PokerClock deadline={snapshot.nextHandAt} mode="text" label="Next hand in" />
              )}
            </div>
          )}
        </div>

        {view.phase !== "game-complete" && view.yourHoleCards.length > 0 && (
          <div className="poker-viewer-cards" aria-label="Your hole cards">
            {view.yourHoleCards.map((card, index) => (
              <CardView
                key={`felt-hole-${index}`}
                card={card}
                size="md"
                dealIndex={index + 1}
                highlighted={hasHint && bestCardKeys.has(cardKey(card))}
                dimmed={hasHint && !bestCardKeys.has(cardKey(card))}
                className={cn(
                  index === 0 ? "poker-card-viewer-left" : "poker-card-viewer-right",
                  viewerPlayer?.folded && "poker-card-folded",
                )}
              />
            ))}
          </div>
        )}

        <PokerActionToolbar
          snapshot={snapshot}
          onSnapshot={onSnapshot}
          onActionFeedback={onActionFeedback}
        />

        {viewerPopups.length > 0 && (
          <div className="poker-popup-stack poker-popup-viewer-spot" aria-hidden="true">
            {viewerPopups.map((popup) => (
              <PokerPopupBubble key={popup.key} popup={popup} />
            ))}
          </div>
        )}

        {tableAnnouncements.length > 0 && (
          <div
            className="poker-popup-stack poker-popup-announcements"
            role="status"
            aria-live="polite"
          >
            {tableAnnouncements.map((popup) => (
              <PokerPopupBubble key={popup.key} popup={popup} />
            ))}
          </div>
        )}

        {view.phase === "game-complete" && (
          <div className="poker-placement-board absolute left-1/2 top-1/2 z-20 flex w-[min(24rem,calc(100%-2rem))] -translate-x-1/2 -translate-y-1/2 justify-center">
            <PlacementBoard view={view} />
          </div>
        )}
      </div>

      <PokerActionConsole
        snapshot={snapshot}
        handLabel={handLabel}
        handTier={handTier}
        hostSeatId={snapshot.hostSeatId}
        starting={actionProps.starting}
        leaving={actionProps.leaving}
        onStart={actionProps.onStart}
        onLeave={actionProps.onLeave}
      />
    </div>
  );
}