import { describe, expect, it } from "vitest";
import type { Card, PublicPlayerView } from "@/lib/minigames/blackjack";
import {
  soundEventsForTransition,
  type BlackjackSoundEvent,
  type BlackjackSoundSnapshot,
} from "@/components/frontend/minigames/blackjack/blackjackSoundEvents";

const card = (rank: Card["rank"], suit: Card["suit"]): Card => ({ rank, suit });

function player(seatId: number, overrides: Partial<PublicPlayerView> = {}): PublicPlayerView {
  return {
    seatId,
    name: `Player ${seatId + 1}`,
    bankroll: 1000,
    hands: [],
    insuranceBet: 0,
    insuranceAnswered: false,
    hasBet: false,
    sittingOut: false,
    bankrupt: false,
    left: false,
    roundsPlayed: 0,
    roundsWon: 0,
    blackjacksHit: 0,
    ...overrides,
  };
}

function hand(
  overrides: Partial<PublicPlayerView["hands"][number]> = {},
): PublicPlayerView["hands"][number] {
  return {
    cards: [],
    bet: 25,
    status: "active",
    doubled: false,
    fromSplit: false,
    splitAces: false,
    total: 21,
    outcome: null,
    netChange: null,
    ...overrides,
  };
}

function view(
  overrides: Partial<BlackjackSoundSnapshot["you"]> = {},
): BlackjackSoundSnapshot["you"] {
  return {
    roundNumber: 1,
    phase: "betting",
    players: [player(0), player(1)],
    dealer: { cards: [], holeHidden: true, total: null, hasBlackjack: null },
    roundResult: null,
    viewerSeat: 0,
    yourTurn: false,
    yourHands: [],
    ...overrides,
  };
}

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

function byType(events: readonly BlackjackSoundEvent[], type: BlackjackSoundEvent["type"]) {
  return events.find((event) => event.type === type);
}

describe("blackjack sound transition events", () => {
  it("plays a round-start chime when the round counter advances", () => {
    const events = soundEventsForTransition(
      snapshot(1, view({ roundNumber: 1, phase: "round-complete" })),
      snapshot(2, view({ roundNumber: 2, phase: "betting" })),
    );
    expect(byType(events, "round-start")).toBeDefined();
  });

  it("announces turn changes", () => {
    const events = soundEventsForTransition(
      snapshot(1, view({ yourTurn: false })),
      snapshot(2, view({ yourTurn: true, phase: "player" })),
    );
    expect(byType(events, "turn-gained")).toBeDefined();

    const back = soundEventsForTransition(
      snapshot(2, view({ yourTurn: true, phase: "player" })),
      snapshot(3, view({ yourTurn: false, phase: "player" })),
    );
    expect(byType(back, "turn-lost")).toBeDefined();
  });

  it("announces cards hitting the felt", () => {
    const dealtCards = [card(10, "s"), card(9, "h")];
    const events = soundEventsForTransition(
      snapshot(1, view()),
      snapshot(
        2,
        view({
          phase: "player",
          players: [player(0, { hasBet: true, hands: [hand({ cards: dealtCards })] }), player(1)],
          dealer: { cards: [card(6, "d"), card(7, "c")], holeHidden: true, total: null, hasBlackjack: null },
        }),
      ),
    );
    const deal = byType(events, "cards-dealt");
    expect(deal).toBeDefined();
    if (deal?.type === "cards-dealt") expect(deal.cardCount).toBe(4);
  });

  it("announces a wager and a bust", () => {
    const events = soundEventsForTransition(
      snapshot(1, view({ players: [player(0, { hands: [hand()] }), player(1)] })),
      snapshot(
        2,
        view({
          players: [player(0, { hasBet: true, hands: [hand({ cards: [card(5, "s"), card(6, "s")] })] }), player(1)],
        }),
      ),
    );
    expect(byType(events, "wager")).toBeDefined();

    const bustEvents = soundEventsForTransition(
      snapshot(
        3,
        view({
          phase: "player",
          players: [player(0, { hasBet: true, hands: [hand({ cards: [card(5, "s"), card(6, "s")] })] }), player(1)],
        }),
      ),
      snapshot(
        4,
        view({
          phase: "player",
          players: [
            player(0, {
              hasBet: true,
              hands: [hand({ status: "bust", cards: [card(5, "s"), card(6, "s"), card(10, "d")] })],
            }),
            player(1),
          ],
        }),
      ),
    );
    expect(byType(bustEvents, "bust")).toBeDefined();
  });

  it("settles with a viewer result event", () => {
    const settled = view({
      phase: "round-complete",
      roundResult: {
        roundNumber: 1,
        dealerTotal: 19,
        dealerBusted: false,
        dealerHasBlackjack: false,
        hands: [
          { seatId: 0, handIndex: 0, total: 20, outcome: "win", payout: 25, netChange: 25 },
        ],
        insurance: [],
      },
    });
    const events = soundEventsForTransition(snapshot(1, view()), snapshot(2, settled));
    expect(byType(events, "settle")).toBeDefined();
    const result = byType(events, "hand-result");
    expect(result).toBeDefined();
    if (result?.type === "hand-result") {
      expect(result.result).toBe("win");
      expect(result.netChange).toBe(25);
    }
  });

  it("reports a push result on a tie", () => {
    const settled = view({
      phase: "round-complete",
      roundResult: {
        roundNumber: 1,
        dealerTotal: 20,
        dealerBusted: false,
        dealerHasBlackjack: false,
        hands: [{ seatId: 0, handIndex: 0, total: 20, outcome: "push", payout: 0, netChange: 0 }],
        insurance: [],
      },
    });
    const events = soundEventsForTransition(snapshot(1, view()), snapshot(2, settled));
    const result = byType(events, "hand-result");
    expect(result).toBeDefined();
    if (result?.type === "hand-result") expect(result.result).toBe("push");
  });

  it("returns no events for the same version", () => {
    const current = snapshot(5, view());
    expect(soundEventsForTransition(current, current)).toEqual([]);
  });
});