import { content } from "@deadhead/content";
import { describe, expect, it } from "vitest";
import { GameEngine, MemoryBackend, SaveStorage, type RandomSource } from "../src/index";
import { companyName } from "../src/game/names";
import { TEST_NOW } from "./support";

/** Deterministic ids and seeds, so the starting state can be compared exactly. */
function fixedRandom(seed: number): RandomSource {
  let n = 0;
  return { id: () => `id-${++n}`, seed: () => seed };
}

function engineOn(backend: MemoryBackend, seed = 1234) {
  return new GameEngine({
    storage: new SaveStorage(backend),
    clock: { now: () => TEST_NOW },
    random: fixedRandom(seed),
  });
}

describe("company creation on the device (Step 14.8)", () => {
  it("starts from empty storage with exactly CR-001's starting state", async () => {
    const backend = new MemoryBackend();
    const engine = engineOn(backend);
    await expect(engine.call("getPlayerState", {})).rejects.toMatchObject({ code: "unauthorized" });

    const { state } = await engine.call("createGuest", {});
    expect(state).toEqual({
      playerId: "id-1",
      company: {
        id: "id-2",
        name: companyName(1234),
        credits: content.config.startingCredits,
        loanBalance: 0,
      },
      ships: [],
      pilots: [
        {
          id: "id-3",
          name: "Captain",
          isAvatar: true,
          isVeteran: false,
          xp: 0,
          level: 0,
          skills: {},
          skillPointsAvailable: 0,
          assignedShipId: null,
          status: "idle",
          locationId: "earth",
          dutyHours: 0,
          dutyLimit: content.config.dutyLimitGameHours,
          resting: false,
          restEndsAt: null,
        },
      ],
      bays: [],
      locations: content.locations.map((l) => ({ id: l.id, discovered: l.startsDiscovered })),
      tutorial: {
        loanerLocationId: "earth",
        runInFlight: false,
        runsCompleted: 0,
        dealAvailable: false,
      },
      activeDispatches: [],
      summaries: [],
      goals: [],
    });
  });

  it("opens the same company after a reload", async () => {
    const backend = new MemoryBackend();
    const created = await engineOn(backend).call("createGuest", {});
    // A new engine on the same storage: the app reloaded.
    const reopened = engineOn(backend, 9999);
    expect(await reopened.call("getPlayerState", {})).toEqual(created.state);
    expect(await reopened.call("createGuest", {})).toEqual(created);
  });

  it("gives each new company its own world seed", async () => {
    const a = await engineOn(new MemoryBackend(), 1).call("createGuest", {});
    const b = await engineOn(new MemoryBackend(), 2).call("createGuest", {});
    expect(a.state.company.name).toBe(companyName(1));
    expect(b.state.company.name).toBe(companyName(2));
  });
});