import { getPayload, Payload } from "payload";
import config from "@/payload.config";
import { afterAll, beforeAll, describe, expect, it } from "vitest";
import type { BankAccount } from "@/payload-types";
import { createAccount, ensurePersonalAccount, getTreasuryAccountId } from "@/lib/banking";
import { getBalancesBySteamId, parseMoneyDelta, processMoneyEvent } from "@/lib/arma-bridge/money";

let payload: Payload;
const RUN = `money-${Date.now().toString(36)}`;
const STEAM_ID = `${RUN}-steam-001`;
const UNLINKED = `${RUN}-steam-unlinked`;

async function balanceOf(id: number): Promise<number> {
  const acc = (await payload.findByID({
    collection: "bank-accounts",
    id,
    depth: 0,
    overrideAccess: true,
  })) as unknown as BankAccount;
  return acc.balance ?? 0;
}

let eventSeq = 0;
function moneyEvent(delta: number, reason: string, detail = "") {
  eventSeq += 1;
  return { eventId: `${RUN}:${eventSeq}`, payload: [STEAM_ID, delta, reason, detail] };
}

describe("Arma shop money sync", () => {
  let userId: number;
  let accountId: number;
  let treasuryId: number;
  let createdTreasury = false;

  beforeAll(async () => {
    const payloadConfig = await config;
    payload = await getPayload({ config: payloadConfig });

    const user = await payload.create({
      collection: "users",
      data: {
        username: `${RUN}-player`,
        discordUsername: `${RUN}-player-discord`,
        displayName: `${RUN} Player`,
        steamId: STEAM_ID,
        password: "Test1234",
      },
      overrideAccess: true,
      depth: 0,
    });
    userId = user.id;

    const existingTreasury = await getTreasuryAccountId(payload);
    if (existingTreasury) {
      treasuryId = existingTreasury;
    } else {
      const treasury = await createAccount(payload, { name: `${RUN} Treasury`, accountType: "treasury" });
      treasuryId = treasury.id;
      createdTreasury = true;
    }
  });

  afterAll(async () => {
    if (accountId) {
      await payload.delete({ collection: "bank-accounts", id: accountId, overrideAccess: true }).catch(() => {});
    }
    if (createdTreasury && treasuryId) {
      await payload.delete({ collection: "bank-accounts", id: treasuryId, overrideAccess: true }).catch(() => {});
    }
    if (userId) {
      const profiles = await payload.find({
        collection: "profiles",
        where: { user: { equals: userId } },
        depth: 0,
        overrideAccess: true,
      });
      for (const profile of profiles.docs) {
        await payload.delete({ collection: "profiles", id: profile.id, overrideAccess: true }).catch(() => {});
      }
      await payload.delete({ collection: "users", id: userId, overrideAccess: true }).catch(() => {});
    }
  });

  describe("parseMoneyDelta", () => {
    it("parses [steamId, delta, reason, detail] and rounds the delta", () => {
      expect(parseMoneyDelta(["7656119", -250.4, "Purchase", "arifle_MX_F x1"])).toEqual({
        steamId: "7656119",
        delta: -250,
        reason: "purchase",
        detail: "arifle_MX_F x1",
      });
    });

    it("rejects malformed or zero payloads", () => {
      expect(parseMoneyDelta(null)).toBeNull();
      expect(parseMoneyDelta(["7656119", 100])).toBeNull();
      expect(parseMoneyDelta(["", 100, "reward"])).toBeNull();
      expect(parseMoneyDelta(["7656119", 0, "reward"])).toBeNull();
      expect(parseMoneyDelta(["7656119", "100", "reward"])).toBeNull();
      expect(parseMoneyDelta(["7656119", 100, ""])).toBeNull();
    });
  });

  it("creates reward money in the personal account and reports it by Steam ID", async () => {
    await processMoneyEvent(payload, moneyEvent(500, "reward", "Dialogue test"));
    const account = await ensurePersonalAccount(payload, userId);
    accountId = account.id;
    expect(await balanceOf(accountId)).toBe(500);

    const balances = await getBalancesBySteamId(payload, [STEAM_ID, UNLINKED]);
    expect(balances[STEAM_ID]).toBe(500);
    expect(balances).not.toHaveProperty(UNLINKED);
  });

  it("pays purchases to the treasury and refunds them from it", async () => {
    const treasuryBefore = await balanceOf(treasuryId);

    await processMoneyEvent(payload, moneyEvent(-200, "purchase", "arifle_MX_F x1"));
    expect(await balanceOf(accountId)).toBe(300);
    expect(await balanceOf(treasuryId)).toBe(treasuryBefore + 200);

    await processMoneyEvent(payload, moneyEvent(200, "refund", "arifle_MX_F x1"));
    expect(await balanceOf(accountId)).toBe(500);
    expect(await balanceOf(treasuryId)).toBe(treasuryBefore);
  });

  it("does not overdraw: a debit larger than the balance is skipped without throwing", async () => {
    await expect(processMoneyEvent(payload, moneyEvent(-100000, "purchase"))).resolves.toBeUndefined();
    expect(await balanceOf(accountId)).toBe(500);
  });

  it("skips unlinked players and malformed events without throwing", async () => {
    await expect(
      processMoneyEvent(payload, { eventId: `${RUN}:unlinked`, payload: [UNLINKED, 100, "reward"] }),
    ).resolves.toBeUndefined();
    await expect(processMoneyEvent(payload, { eventId: `${RUN}:bad`, payload: "nope" })).resolves.toBeUndefined();
    expect(await balanceOf(accountId)).toBe(500);
  });
});