/* eslint-disable max-lines-per-function -- Test suites naturally have many cases */
/* eslint-disable max-lines -- Test suites naturally have many cases */
/* eslint-disable @typescript-eslint/consistent-type-assertions -- Tests build minimal state objects */
import { beforeEach, describe, expect, it, vi } from "vitest";
import { Hono } from "hono";
import type { GameState } from "@elysium/types";

vi.mock("../../src/db/client.js", () => ({
  prisma: {
    player: { update: vi.fn() },
    gameState: { findUnique: vi.fn(), update: vi.fn() },
  },
}));

vi.mock("../../src/middleware/auth.js", () => ({
  authMiddleware: vi.fn(async (c: { set: (key: string, value: string) => void }, next: () => Promise<void>) => {
    c.set("discordId", "test_discord_id");
    await next();
  }),
}));

vi.mock("../../src/services/webhook.js", () => ({
  postMilestoneWebhook: vi.fn().mockResolvedValue(undefined),
}));

const DISCORD_ID = "test_discord_id";

const makeState = (overrides: Partial<GameState> = {}): GameState => ({
  player: { discordId: DISCORD_ID, username: "u", discriminator: "0", avatar: null, totalGoldEarned: 0, totalClicks: 0, characterName: "T" },
  resources: { gold: 0, essence: 0, crystals: 0, runestones: 0 },
  adventurers: [],
  upgrades: [],
  quests: [],
  bosses: [{ id: "the_absolute_one", status: "defeated" }] as GameState["bosses"],
  equipment: [],
  achievements: [],
  zones: [],
  exploration: { areas: [], materials: [], craftedRecipeIds: [], craftedGoldMultiplier: 1, craftedEssenceMultiplier: 1, craftedClickMultiplier: 1, craftedCombatMultiplier: 1 },
  companions: { unlockedCompanionIds: [], activeCompanionId: null },
  prestige: { count: 0, runestones: 0, productionMultiplier: 1, purchasedUpgradeIds: [] },
  baseClickPower: 1,
  lastTickAt: 0,
  schemaVersion: 1,
  ...overrides,
} as GameState);

describe("transcendence route", () => {
  let app: Hono;
  let prisma: {
    player: { update: ReturnType<typeof vi.fn> };
    gameState: { findUnique: ReturnType<typeof vi.fn>; update: ReturnType<typeof vi.fn> };
  };

  beforeEach(async () => {
    vi.clearAllMocks();
    const { transcendenceRouter } = await import("../../src/routes/transcendence.js");
    const { prisma: p } = await import("../../src/db/client.js");
    prisma = p as typeof prisma;
    app = new Hono();
    app.route("/transcendence", transcendenceRouter);
  });

  const post = (path: string, body?: Record<string, unknown>) =>
    app.fetch(new Request(`http://localhost/transcendence${path}`, {
      method: "POST",
      headers: body ? { "Content-Type": "application/json" } : undefined,
      body: body ? JSON.stringify(body) : undefined,
    }));

  describe("POST /", () => {
    it("returns 404 when no save is found", async () => {
      vi.mocked(prisma.gameState.findUnique).mockResolvedValueOnce(null);
      const res = await post("");
      expect(res.status).toBe(404);
    });

    it("returns 400 when the absolute one is not defeated", async () => {
      const state = makeState({ bosses: [] });
      vi.mocked(prisma.gameState.findUnique).mockResolvedValueOnce({ state } as never);
      const res = await post("");
      expect(res.status).toBe(400);
    });

    it("returns echoes and count on successful transcendence", async () => {
      const state = makeState();
      vi.mocked(prisma.gameState.findUnique).mockResolvedValueOnce({ state } as never);
      vi.mocked(prisma.gameState.update).mockResolvedValueOnce({} as never);
      vi.mocked(prisma.player.update).mockResolvedValueOnce({} as never);
      const res = await post("");
      expect(res.status).toBe(200);
      const body = await res.json() as { echoes: number; newTranscendenceCount: number };
      expect(body.newTranscendenceCount).toBe(1);
      expect(body.echoes).toBeGreaterThanOrEqual(0);
    });

    it("returns 500 when the database throws during transcendence", async () => {
      vi.mocked(prisma.gameState.findUnique).mockRejectedValueOnce(new Error("DB error"));
      const res = await post("");
      expect(res.status).toBe(500);
    });

    it("returns 500 when the database throws a non-Error value during transcendence", async () => {
      vi.mocked(prisma.gameState.findUnique).mockRejectedValueOnce("raw string error");
      const res = await post("");
      expect(res.status).toBe(500);
    });
  });

  describe("POST /buy-upgrade", () => {
    it("returns 400 when upgradeId is missing", async () => {
      const res = await post("/buy-upgrade", {});
      expect(res.status).toBe(400);
    });

    it("returns 404 for unknown upgrade", async () => {
      const res = await post("/buy-upgrade", { upgradeId: "nonexistent_echo" });
      expect(res.status).toBe(404);
    });

    it("returns 404 when no save is found", async () => {
      vi.mocked(prisma.gameState.findUnique).mockResolvedValueOnce(null);
      const res = await post("/buy-upgrade", { upgradeId: "echo_income_1" });
      expect(res.status).toBe(404);
    });

    it("returns 400 when transcendence data is missing from state", async () => {
      const state = makeState({ transcendence: undefined });
      vi.mocked(prisma.gameState.findUnique).mockResolvedValueOnce({ state } as never);
      const res = await post("/buy-upgrade", { upgradeId: "echo_income_1" });
      expect(res.status).toBe(400);
    });

    it("returns 400 when upgrade is already purchased", async () => {
      const state = makeState({
        transcendence: { count: 1, echoes: 100, purchasedUpgradeIds: ["echo_income_1"], echoIncomeMultiplier: 1, echoCombatMultiplier: 1, echoPrestigeThresholdMultiplier: 1, echoPrestigeRunestoneMultiplier: 1, echoMetaMultiplier: 1 },
      });
      vi.mocked(prisma.gameState.findUnique).mockResolvedValueOnce({ state } as never);
      const res = await post("/buy-upgrade", { upgradeId: "echo_income_1" });
      expect(res.status).toBe(400);
    });

    it("returns 400 when not enough echoes", async () => {
      const state = makeState({
        transcendence: { count: 1, echoes: 0, purchasedUpgradeIds: [], echoIncomeMultiplier: 1, echoCombatMultiplier: 1, echoPrestigeThresholdMultiplier: 1, echoPrestigeRunestoneMultiplier: 1, echoMetaMultiplier: 1 },
      });
      vi.mocked(prisma.gameState.findUnique).mockResolvedValueOnce({ state } as never);
      // echo_income_1 costs 5 echoes but state has 0
      const res = await post("/buy-upgrade", { upgradeId: "echo_income_1" });
      expect(res.status).toBe(400);
    });

    it("returns updated data on successful echo upgrade purchase", async () => {
      const state = makeState({
        transcendence: { count: 1, echoes: 100, purchasedUpgradeIds: [], echoIncomeMultiplier: 1, echoCombatMultiplier: 1, echoPrestigeThresholdMultiplier: 1, echoPrestigeRunestoneMultiplier: 1, echoMetaMultiplier: 1 },
      });
      vi.mocked(prisma.gameState.findUnique).mockResolvedValueOnce({ state } as never);
      vi.mocked(prisma.gameState.update).mockResolvedValueOnce({} as never);
      const res = await post("/buy-upgrade", { upgradeId: "echo_income_1" });
      expect(res.status).toBe(200);
      const body = await res.json() as { echoesRemaining: number; purchasedUpgradeIds: string[] };
      expect(body.echoesRemaining).toBe(95); // 100 - 5
      expect(body.purchasedUpgradeIds).toContain("echo_income_1");
    });

    it("returns 500 when the database throws during buy-upgrade", async () => {
      vi.mocked(prisma.gameState.findUnique).mockRejectedValueOnce(new Error("DB error"));
      const res = await post("/buy-upgrade", { upgradeId: "echo_income_1" });
      expect(res.status).toBe(500);
    });

    it("returns 500 when the database throws a non-Error value during buy-upgrade", async () => {
      vi.mocked(prisma.gameState.findUnique).mockRejectedValueOnce("raw string error");
      const res = await post("/buy-upgrade", { upgradeId: "echo_income_1" });
      expect(res.status).toBe(500);
    });
  });
});