import { content } from "@deadhead/content";
import { describe, expect, it } from "vitest";
import {
  boardPeriodIndex,
  generateContractBoard,
  validateDispatch,
  type FleetMember,
} from "../src/index";

const earth = content.location("earth")!;
const start = Date.parse(content.config.epoch.realStart);
const firstPeriod = boardPeriodIndex(start, content.config);
/** The deal's Clipper with the veteran after Long Haul 2: Mars is in reach at the start. */
const clipper: FleetMember = {
  modelId: "clipper",
  skills: { "expensive-cargo": 1, "long-haul": 2 },
};

const board = (periodIndex: number, discovered: string[], fleet: FleetMember[]) =>
  generateContractBoard(
    { location: earth, discoveredIds: new Set(discovered), periodIndex, worldSeed: 4242, fleet },
    content,
  );

/** The fleet's Clipper can take it: range, landing, mass, skills, no stranding. */
const clipperCanFly = (contract: ReturnType<typeof board>[number]) =>
  validateDispatch(
    {
      ship: { id: "s", modelId: "clipper", locationId: "earth", inFlight: false },
      pilot: {
        id: "p",
        isAvatar: false,
        assignedShipId: "s",
        inFlight: false,
        skills: clipper.skills,
        restEndsAt: null,
      },
      contract,
      tutorial: false,
      credits: 1e9,
      now: contract.offeredAt,
      discoveredIds: new Set(["earth", "moon"]),
    },
    content,
  ).ok;

describe("a first contact the fleet can fly (decision 0.5.85)", () => {
  it("offers one on every board while a reachable place is undiscovered", () => {
    for (let k = 0; k < 24; k++) {
      const contracts = board(firstPeriod + k, ["earth", "moon"], [clipper]);
      const flyable = contracts.filter((c) => c.firstContact && clipperCanFly(c));
      expect(flyable.length, `period ${k}`).toBeGreaterThanOrEqual(1);
      expect(flyable.every((c) => c.destinationId === "mars")).toBe(true);
    }
  });

  it("stops once the reachable places are discovered", () => {
    for (let k = 0; k < 24; k++) {
      const contracts = board(firstPeriod + k, ["earth", "moon", "mars"], [clipper]);
      expect(contracts.filter((c) => c.firstContact && clipperCanFly(c))).toEqual([]);
    }
  });
});