// Ported from apps/server/test (CR-014 Step 14.5): now runs on the engine.
import { content } from "@deadhead/content";
import { errorResponseSchema, playerStateSchema } from "@deadhead/schema";
import { describe, expect, it } from "vitest";
import { useTestApp, signUp, call, getState, edit, readSave, type Guest } from "../support";

const testApp = useTestApp();

/** Fast-forwards a new guest to "four runs done, loaner back at Earth". */
async function readyForDeal(_guest: Guest) {
  await edit(testApp().app, (save) => {
    save.player.tutorialRunsCompleted = content.config.tutorialRunsBeforeDeal;
    save.player.loanerLocationId = "earth";
  });
}

const accept = (guest: Guest) => call(testApp().app, guest, "POST", "/api/deal/accept");

/** Everything the deal touches, read straight from the save. */
async function snapshot(_guest: Guest) {
  const save = await readSave(testApp().app);
  return {
    player: save.player,
    company: save.company,
    ships: save.ships,
    bays: save.bays,
    pilots: save.pilots,
  };
}

describe("accepting the deal", () => {
  it("hands over a crewed Courier and Clipper at Earth, an Earth bay and the loan, and ends the tutorial", async () => {
    const guest = await signUp(testApp().app);
    await readyForDeal(guest);
    expect((await getState(testApp().app, guest)).tutorial?.dealAvailable).toBe(true);

    const response = await accept(guest);
    expect(response.statusCode).toBe(200);
    const state = playerStateSchema.parse(response.json());

    expect(state.tutorial).toBeNull();
    // CR-013: the Courier for the avatar and the Clipper for the veteran.
    expect(state.ships).toHaveLength(2);
    const [ship, clipper] = state.ships;
    expect(ship).toMatchObject({
      modelId: "courier",
      status: "idle",
      locationId: "earth",
      pilotId: guest.avatarId,
    });
    const veteran = state.pilots.find((p) => p.isVeteran)!;
    expect(clipper).toMatchObject({
      modelId: "clipper",
      status: "idle",
      locationId: "earth",
      pilotId: veteran.id,
    });
    expect(veteran).toMatchObject({ assignedShipId: clipper!.id, locationId: "earth" });
    expect(state.bays.map((b) => b.locationId)).toEqual(["earth"]);
    expect(state.pilots[0]).toMatchObject({
      isAvatar: true,
      assignedShipId: ship!.id,
      locationId: "earth",
    });
    expect(state.company.loanBalance).toBe(content.dealLoanAmount);

    const after = await snapshot(guest);
    expect(after.player).toMatchObject({
      tutorialActive: false,
      dealAccepted: true,
      loanerLocationId: null,
    });
  });

  it("fails with no changes when the deal is not available", async () => {
    const guest = await signUp(testApp().app);
    const before = await snapshot(guest);
    const response = await accept(guest);
    expect(response.statusCode).toBe(409);
    expect(errorResponseSchema.parse(response.json()).error.code).toBe("deal-not-available");
    expect(await snapshot(guest)).toEqual(before);
  });

  it("is accepted with the loaner at the Moon, and the avatar ends up at Earth (CR-017)", async () => {
    const guest = await signUp(testApp().app);
    await readyForDeal(guest);
    await edit(testApp().app, (save) => {
      save.player.loanerLocationId = "moon";
    });
    const response = await accept(guest);
    expect(response.statusCode).toBe(200);
    const state = playerStateSchema.parse(response.json());
    const avatar = state.pilots.find((p) => p.isAvatar)!;
    const courier = state.ships.find((s) => s.id === avatar.assignedShipId)!;
    expect(avatar.locationId).toBe("earth");
    expect(courier).toMatchObject({ modelId: "courier", locationId: "earth" });
    expect(state.tutorial).toBeNull();
  });

  it("fails the second time", async () => {
    const guest = await signUp(testApp().app);
    await readyForDeal(guest);
    expect((await accept(guest)).statusCode).toBe(200);
    const before = await snapshot(guest);
    const again = await accept(guest);
    expect(errorResponseSchema.parse(again.json()).error.code).toBe("deal-not-available");
    expect(await snapshot(guest)).toEqual(before);
  });

  it("produces exactly one deal from two simultaneous accepts", async () => {
    const guest = await signUp(testApp().app);
    await readyForDeal(guest);
    const responses = await Promise.all([accept(guest), accept(guest)]);
    expect(responses.map((r) => r.statusCode).sort()).toEqual([200, 409]);
    const after = await snapshot(guest);
    expect(after.ships).toHaveLength(2);
    expect(after.bays).toHaveLength(1);
    expect(after.company!.loanBalance).toBe(content.dealLoanAmount);
  });
});