"use client";

import { useState } from "react";
import { cn } from "@/lib/utils";
import type { PokerSnapshot } from "@/app/(frontend)/minigames/poker/actions";
import { MIN_PLAYERS } from "@/lib/minigames/poker";
import { Badge } from "@/components/ui/badge";
import { Button } from "@/components/ui/button";
import { Card, CardContent, CardFooter, CardHeader, CardTitle } from "@/components/ui/card";
import { Skeleton } from "@/components/ui/skeleton";
import { PokerCardStyleProvider } from "./cardStyle";
import { PokerGameTable } from "./PokerGameTable";
import { RenameTableDialog } from "./RenameTableDialog";
import { usePokerPopups } from "./usePokerPopups";
import { usePokerSounds } from "./usePokerSounds";
import { seatPosition } from "./seatPosition";

interface PokerTableProps {
  readonly snapshot: PokerSnapshot | null;
  readonly currentUserId: number | string;
  readonly loading: boolean;
  readonly tableError: string | null;
  readonly onSnapshot: (snapshot: PokerSnapshot) => void;
  readonly onJoin: () => Promise<void>;
  readonly onSpectate: () => Promise<void>;
  readonly onStart: () => Promise<void>;
  readonly onLeave: () => Promise<void>;
  readonly onBack: () => void;
  readonly isSuperuser: boolean;
  readonly superuserIds: readonly number[];
}

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

function isSeatedSnapshot(snapshot: PokerSnapshot): snapshot is SeatedSnapshot {
  return snapshot.you !== null;
}

function WaitingTable({
  snapshot,
  currentUserId,
  onSnapshot,
  onJoin,
  onSpectate,
  onStart,
  onLeave,
  onBack,
}: {
  readonly snapshot: PokerSnapshot;
  readonly currentUserId: number | string;
  readonly onSnapshot: (snapshot: PokerSnapshot) => void;
  readonly onJoin: () => Promise<void>;
  readonly onSpectate: () => Promise<void>;
  readonly onStart: () => Promise<void>;
  readonly onLeave: () => Promise<void>;
  readonly onBack: () => void;
}) {
  const [starting, setStarting] = useState(false);
  const [leaving, setLeaving] = useState(false);
  const viewerSeat = snapshot.seats.findIndex((id) => String(id) === String(currentUserId));
  const seated = viewerSeat >= 0;
  const full = snapshot.seats.length > 0 && snapshot.seats.every((id) => id !== null);
  const seatedCount = snapshot.seats.filter((id) => id !== null).length;
  const enoughPlayers = seatedCount >= MIN_PLAYERS;
  const isHost = seated && snapshot.hostSeatId === viewerSeat;
  const opponentCount = snapshot.seats.length - (seated ? 1 : 0);

  const start = async () => {
    setStarting(true);
    await onStart();
    setStarting(false);
  };

  const leave = async () => {
    setLeaving(true);
    await onLeave();
    setLeaving(false);
  };

  return (
    <Card className="rounded-none">
      <CardHeader className="flex-row items-start justify-between gap-4 border-b p-4">
        <div className="flex flex-col gap-1">
          <div className="flex items-center gap-1">
            <CardTitle className="text-base">
              {snapshot.name ?? `Table ${snapshot.tableId}`}
            </CardTitle>
            {isHost && (
              <RenameTableDialog
                tableId={snapshot.tableId}
                currentName={snapshot.name}
                onSnapshot={onSnapshot}
              />
            )}
          </div>
          <p className="text-sm text-muted-foreground">
            {seated
              ? "You have a seat reserved."
              : "Join an open seat to receive a private hand view."}
          </p>
        </div>
        <Badge variant="outline">Waiting room</Badge>
      </CardHeader>
      <CardContent className="p-4">
        <div className="poker-felt-table relative min-h-[30rem] overflow-hidden p-4 sm:min-h-[36rem]">
          {snapshot.seats.map((userId, seatId) => (
            <div
              key={seatId}
              className={cn(
                "poker-waiting-seat absolute flex flex-col items-center gap-1 border px-3 py-2 text-xs",
                seatId === viewerSeat
                  ? "poker-waiting-seat-south"
                  : seatPosition(
                      snapshot.seats
                        .slice(0, seatId)
                        .filter((_, previousSeatId) => previousSeatId !== viewerSeat).length,
                      opponentCount,
                    ),
                userId !== null && "poker-waiting-seat-occupied",
              )}
            >
              <span
                className={cn(
                  "poker-seat-avatar",
                  userId === null ? "poker-seat-avatar-open" : "poker-seat-avatar-tone-0",
                )}
                aria-hidden="true"
              >
                {userId === null ? "?" : String(userId).charAt(0).toUpperCase()}
              </span>
              <span className="poker-waiting-name font-semibold">Seat {seatId + 1}</span>
              <span className="poker-waiting-status text-white/70">
                {userId === null
                  ? "Open seat"
                  : String(userId) === String(currentUserId)
                    ? "You"
                    : "Occupied"}
              </span>
            </div>
          ))}
          <div className="absolute left-1/2 top-1/2 flex -translate-x-1/2 -translate-y-1/2 flex-col items-center gap-2 text-center text-white">
            <span className="font-mono text-xs uppercase tracking-[0.2em] text-white/60">
              Polaris Hold&apos;em
            </span>
            <span className="text-sm text-white/80">
              {seated ? "Waiting for the host to start" : "Open seating"}
            </span>
          </div>
        </div>
      </CardContent>
      <CardFooter className="flex flex-wrap justify-end gap-2 border-t p-4">
        {seated ? (
          <>
            {isHost && (
              <Button
                type="button"
                onClick={() => void start()}
                disabled={starting || !enoughPlayers}
              >
                {starting
                  ? "Starting..."
                  : enoughPlayers
                    ? "Start game"
                    : "You need at least two players to start"}
              </Button>
            )}
            <Button type="button" variant="outline" onClick={() => void leave()} disabled={leaving}>
              {leaving ? "Leaving..." : "Leave table"}
            </Button>
          </>
        ) : (
          <>
            <Button type="button" onClick={() => void onJoin()} disabled={full}>
              {full ? "Table full" : "Join an open seat"}
            </Button>
            {snapshot.inGame && (
              <Button type="button" variant="outline" onClick={() => void onSpectate()}>
                Spectate
              </Button>
            )}
            <Button type="button" variant="outline" onClick={onBack}>
              Back to lobby
            </Button>
          </>
        )}
      </CardFooter>
    </Card>
  );
}

function PokerTableInner({
  snapshot,
  currentUserId,
  loading,
  tableError,
  onSnapshot,
  onJoin,
  onSpectate,
  onStart,
  onLeave,
  onBack,
  isSuperuser,
  superuserIds,
}: PokerTableProps) {
  // Sound + popup transitions must live here, ABOVE the waiting/game split:
  // the hooks have to observe the waiting-room-to-first-hand transition,
  // which happens before the game table (and its seat view) mounts.
  const sound = usePokerSounds(snapshot);
  const { popups, actionLog } = usePokerPopups(snapshot);

  if (loading && !snapshot) {
    return (
      <Card className="rounded-none">
        <CardHeader className="gap-3 p-4">
          <Skeleton className="h-5 w-40" />
          <Skeleton className="h-4 w-64" />
        </CardHeader>
        <CardContent className="p-4 pt-0">
          <Skeleton className="h-[28rem] w-full" />
        </CardContent>
      </Card>
    );
  }

  if (!snapshot) {
    return (
      <Card className="rounded-none">
        <CardHeader className="p-4">
          <CardTitle className="text-base">Table unavailable</CardTitle>
        </CardHeader>
        <CardContent className="p-4 pt-0">
          <p className="text-sm text-destructive">
            {tableError ?? "This table could not be loaded."}
          </p>
        </CardContent>
        <CardFooter className="border-t p-4">
          <Button type="button" variant="outline" onClick={onBack}>
            Back to lobby
          </Button>
        </CardFooter>
      </Card>
    );
  }

  if (!isSeatedSnapshot(snapshot)) {
    return (
      <WaitingTable
        snapshot={snapshot}
        currentUserId={currentUserId}
        onSnapshot={onSnapshot}
        onJoin={onJoin}
        onSpectate={onSpectate}
        onStart={onStart}
        onLeave={onLeave}
        onBack={onBack}
      />
    );
  }

  return (
    <PokerGameTable
      snapshot={snapshot}
      onSnapshot={onSnapshot}
      onStart={onStart}
      onLeave={onLeave}
      onJoin={onJoin}
      sound={sound}
      popups={popups}
      actionLog={actionLog}
      isSuperuser={isSuperuser}
      superuserIds={superuserIds}
    />
  );
}

export function PokerTable(props: PokerTableProps) {
  return (
    <PokerCardStyleProvider>
      <PokerTableInner {...props} />
    </PokerCardStyleProvider>
  );
}