import { describe, expect, it } from "vitest";
import type { PublicPlayerView, ShowdownOutcome } from "@/lib/minigames/poker";
import {
  popupEventsForTransition,
  type PokerPopupEvent,
} from "@/components/frontend/minigames/poker/pokerPopups";
import {
  isTopSeatPosition,
  seatPosition,
} from "@/components/frontend/minigames/poker/seatPosition";
import type { PokerSoundSnapshot } from "@/components/frontend/minigames/poker/pokerSoundEvents";

function player(seatId: number, overrides: Partial<PublicPlayerView> = {}): PublicPlayerView {
  return {
    seatId,
    name: `Player ${seatId + 1}`,
    stack: 1000,
    committed: 0,
    totalCommitted: 0,
    folded: false,
    allIn: false,
    hasActed: false,
    eliminated: false,
    left: false,
    holeCards: null,
    cardCount: 2,
    ...overrides,
  };
}

function view(overrides: Partial<PokerSoundSnapshot["you"]> = {}): PokerSoundSnapshot["you"] {
  return {
    communityCards: [],
    config: { startingStack: 1000, smallBlind: 10, bigBlind: 20, turnTimeoutMs: 30000 },
    currentBet: 0,
    smallBlindSeat: 0,
    bigBlindSeat: 1,
    finalPlacements: null,
    handNumber: 1,
    phase: "betting",
    players: [player(0), player(1)],
    showdown: null,
    street: "preflop",
    toActSeat: 0,
    viewerSeat: 0,
    yourTurn: false,
    ...overrides,
  };
}

function snapshot(
  version: number,
  nextView: PokerSoundSnapshot["you"] = view(),
): PokerSoundSnapshot {
  return { version, you: nextView };
}

function showdown(results: Array<{ seatId: number; chipsWon: number }>): ShowdownOutcome {
  return {
    pots: [],
    results: results.map((item) => ({
      seatId: item.seatId,
      handRank: null,
      bestHand: null,
      chipsWon: item.chipsWon,
      netChange: item.chipsWon,
      placement: 1,
    })),
  };
}

function bySeat(events: readonly PokerPopupEvent[], seatId: number): PokerPopupEvent | undefined {
  return events.find((event) => event.seatId === seatId);
}

describe("poker popup transition events", () => {
  it("labels folds, checks, and wagers with amounts over the acting seat", () => {
    const events = popupEventsForTransition(
      snapshot(1, view({ players: [player(0), player(1)] })),
      snapshot(
        2,
        view({
          currentBet: 20,
          players: [
            player(0, { committed: 20, totalCommitted: 20, hasActed: true }),
            player(1, { folded: true, hasActed: true }),
          ],
        }),
      ),
    );
    const checks = popupEventsForTransition(
      snapshot(1, view({ players: [player(0), player(1)] })),
      snapshot(3, view({ players: [player(0), player(1, { hasActed: true })] })),
    );

    expect(bySeat(events, 0)).toEqual(
      expect.objectContaining({ text: "Bet +20", tone: "wager", seatId: 0 }),
    );
    expect(bySeat(events, 1)).toEqual(
      expect.objectContaining({ text: "Fold", tone: "fold", seatId: 1 }),
    );
    expect(checks).toEqual([expect.objectContaining({ text: "Check", tone: "action", seatId: 1 })]);
  });

  it("distinguishes calls from raises and calls out all-ins", () => {
    const raise = popupEventsForTransition(
      snapshot(
        4,
        view({
          currentBet: 20,
          players: [player(0, { committed: 20, totalCommitted: 20, hasActed: true }), player(1)],
        }),
      ),
      snapshot(
        5,
        view({
          currentBet: 60,
          players: [
            player(0, { committed: 20, totalCommitted: 20, hasActed: true }),
            player(1, { committed: 60, totalCommitted: 60, hasActed: true }),
          ],
        }),
      ),
    );
    const call = popupEventsForTransition(
      snapshot(
        6,
        view({
          currentBet: 60,
          players: [player(0, { committed: 20, totalCommitted: 20, hasActed: true }), player(1)],
        }),
      ),
      snapshot(
        7,
        view({
          currentBet: 60,
          players: [
            player(0, { committed: 20, totalCommitted: 20, hasActed: true }),
            player(1, { committed: 60, totalCommitted: 60, hasActed: true }),
          ],
        }),
      ),
    );
    const allIn = popupEventsForTransition(
      snapshot(8, view({ players: [player(0), player(1)] })),
      snapshot(
        9,
        view({
          currentBet: 1000,
          players: [
            player(0),
            player(1, { committed: 1000, totalCommitted: 1000, hasActed: true, allIn: true }),
          ],
        }),
      ),
    );

    expect(bySeat(raise, 1)?.text).toBe("Raise +60");
    expect(bySeat(call, 1)?.text).toBe("Call +60");
    expect(bySeat(allIn, 1)?.text).toBe("All-in +1,000");
  });

  it("pops winnings over every winning seat on showdown and hand-complete", () => {
    const multiWinner = showdown([
      { seatId: 0, chipsWon: 120 },
      { seatId: 1, chipsWon: 0 },
      { seatId: 2, chipsWon: 340 },
    ]);
    const showdownEvents = popupEventsForTransition(
      snapshot(1, view({ players: [player(0), player(1), player(2)] })),
      snapshot(
        2,
        view({
          phase: "showdown",
          players: [player(0), player(1), player(2)],
          showdown: multiWinner,
        }),
      ),
    );
    const foldOutEvents = popupEventsForTransition(
      snapshot(3, view({ players: [player(0), player(1)] })),
      snapshot(
        4,
        view({
          phase: "hand-complete",
          players: [player(0), player(1, { folded: true })],
          showdown: showdown([{ seatId: 0, chipsWon: 45 }]),
        }),
      ),
    );

    expect(showdownEvents).toEqual([
      expect.objectContaining({ text: "+120", tone: "win", seatId: 0 }),
      expect.objectContaining({ text: "+340", tone: "win", seatId: 2 }),
    ]);
    expect(foldOutEvents).toEqual([
      expect.objectContaining({ text: "+45", tone: "win", seatId: 0 }),
    ]);
  });

  it("stays silent on identical versions and plays the blind sequence at a new hand", () => {
    const current = snapshot(7, view({ yourTurn: true }));
    expect(popupEventsForTransition(current, current)).toEqual([]);

    const blinds = popupEventsForTransition(
      snapshot(5),
      snapshot(
        6,
        view({
          handNumber: 2,
          currentBet: 20,
          players: [
            player(0, { committed: 10, totalCommitted: 10 }),
            player(1, { committed: 20, totalCommitted: 20 }),
          ],
        }),
      ),
    );

    expect(blinds).toEqual([
      expect.objectContaining({
        text: "Small blind +10",
        tone: "wager",
        seatId: 0,
        delay: 0,
      }),
      expect.objectContaining({
        text: "Big blind +20",
        tone: "wager",
        seatId: 1,
        delay: 700,
      }),
    ]);
  });

  it("plays the blind sequence for the game's first hand out of the waiting room", () => {
    const waitingRoom: PokerSoundSnapshot = { version: 1, you: null };
    const events = popupEventsForTransition(waitingRoom, snapshot(2, view({ handNumber: 1 })));

    expect(events).toEqual([
      expect.objectContaining({ text: "Small blind +10", seatId: 0, delay: 0 }),
      expect.objectContaining({ text: "Big blind +20", seatId: 1, delay: 700 }),
    ]);
  });
});

describe("player leave detection", () => {
  it("announces players who vanish from the table between transitions", () => {
    const events = popupEventsForTransition(
      snapshot(1, view({ players: [player(0), player(1), player(2)] })),
      snapshot(2, view({ players: [player(0), player(1)] })),
    );

    expect(events).toEqual([
      expect.objectContaining({
        text: "Player 3 left the table",
        tone: "leave",
        seatId: 2,
      }),
    ]);
  });

  it("announces a mid-game leaver the moment the left flag flips", () => {
    const events = popupEventsForTransition(
      snapshot(3, view({ players: [player(0), player(1)] })),
      snapshot(4, view({ players: [player(0), player(1, { left: true })] })),
    );

    expect(events).toEqual([
      expect.objectContaining({
        text: "Player 2 left the table",
        tone: "leave",
        seatId: 1,
      }),
    ]);
  });

  it("announces the eliminated forfeit only when the player was not already marked left", () => {
    const forfeitOnly = popupEventsForTransition(
      snapshot(5, view({ players: [player(0), player(1)] })),
      snapshot(6, view({ players: [player(0), player(1, { eliminated: true })] })),
    );
    const alreadyLeft = popupEventsForTransition(
      snapshot(7, view({ players: [player(0), player(1, { left: true })] })),
      snapshot(8, view({ players: [player(0), player(1, { left: true, eliminated: true })] })),
    );

    expect(forfeitOnly).toEqual([
      expect.objectContaining({ text: "Player 2 left the table", tone: "leave", seatId: 1 }),
    ]);
    expect(alreadyLeft).toEqual([]);
  });

  it("never mistakes a busted stack for a leaver", () => {
    const events = popupEventsForTransition(
      snapshot(5, view({ players: [player(0), player(1)] })),
      snapshot(6, view({ players: [player(0), player(1, { stack: 0 })] })),
    );

    expect(events).toEqual([]);
  });
});

describe("isTopSeatPosition", () => {
  it("marks top-row arc classes as top seats", () => {
    expect(isTopSeatPosition("poker-seat-arc-center")).toBe(true);
    expect(isTopSeatPosition("poker-seat-arc-center-left")).toBe(true);
    expect(isTopSeatPosition("poker-seat-arc-center-right")).toBe(true);
  });

  it("marks side and corner arc classes as non-top seats", () => {
    expect(isTopSeatPosition("poker-seat-arc-left")).toBe(false);
    expect(isTopSeatPosition("poker-seat-arc-right")).toBe(false);
    expect(isTopSeatPosition("poker-seat-arc-far-left")).toBe(false);
    expect(isTopSeatPosition("poker-seat-arc-far-right")).toBe(false);
  });

  it("matches real seat layouts: one and three opponents put a seat on top, two do not", () => {
    expect(isTopSeatPosition(seatPosition(0, 1))).toBe(true);
    expect(isTopSeatPosition(seatPosition(0, 2))).toBe(false);
    expect(isTopSeatPosition(seatPosition(1, 2))).toBe(false);
    expect(isTopSeatPosition(seatPosition(1, 3))).toBe(true);
    expect(isTopSeatPosition(seatPosition(0, 3))).toBe(false);
    expect(isTopSeatPosition(seatPosition(2, 3))).toBe(false);
    expect(isTopSeatPosition(seatPosition(1, 4))).toBe(true);
    expect(isTopSeatPosition(seatPosition(2, 4))).toBe(true);
    expect(isTopSeatPosition(seatPosition(0, 4))).toBe(false);
    expect(isTopSeatPosition(seatPosition(3, 4))).toBe(false);
  });
});