import { afterEach, beforeEach, expect, it, vi } from "vitest";
import { api, apiRaw, formatPageUrl, getToken, HttpError, setToken } from "../src/api/client";

const jres = (status: number, body: unknown) =>
  new Response(JSON.stringify(body), { status, headers: { "content-type": "application/json" } });

beforeEach(() => setToken(null));
afterEach(() => vi.unstubAllGlobals());

it("login 成功存 token,请求体带凭据", async () => {
  const f = vi.fn(async (_url: any, _init: any) => jres(200, { token: "T" }));
  vi.stubGlobal("fetch", f);
  await expect(api.login("a", "b")).resolves.toEqual({ token: "T" });
  expect(f.mock.calls[0][0]).toBe("/api/auth/login");
  expect(String(f.mock.calls[0][1].body)).toContain('"username":"a"');
});

it("401 清 token 并抛 HttpError(parsed code)", async () => {
  setToken("T");
  vi.stubGlobal("fetch", async (_url: any, init: any) => {
    expect(init.headers.Authorization).toBe("Bearer T");
    return jres(401, { error: { code: "unauthorized", message: "bad credentials" } });
  });
  const e = await api.login("a", "b").catch((e) => e);
  expect(e).toBeInstanceOf(HttpError);
  expect((e as HttpError).code).toBe("unauthorized");
  expect(getToken()).toBeNull();
});

it("非 JSON 错误体回退 http_<status>", async () => {
  vi.stubGlobal("fetch", async () => new Response("oops", { status: 500 }));
  const e = await api.listUsers().catch((e) => e);
  expect((e as HttpError).code).toBe("http_500");
});

it("204 无体 resolve undefined", async () => {
  vi.stubGlobal("fetch", async () => new Response(null, { status: 204 }));
  await expect(api.deleteBook(1)).resolves.toBeUndefined();
});

it("相对路径补 /api 前缀,绝对 /api 原样;query 拼装", async () => {
  const seen: string[] = [];
  vi.stubGlobal("fetch", async (url: any) => {
    seen.push(String(url));
    return jres(200, []);
  });
  await api.listBooks({ library: 3, q: "x" });
  await apiRaw("/api/books/1/cover?v=h");
  expect(seen).toEqual(["/api/books?library=3&q=x", "/api/books/1/cover?v=h"]);
});

it("page_url_fmt %d 替换", () => {
  expect(formatPageUrl("/api/books/9/pages/%d?v=h", 12)).toBe("/api/books/9/pages/12?v=h");
});

it("putProgress keepalive 透传 + JSON body", async () => {
  const f = vi.fn(async (_url: any, _init: any) => new Response(null, { status: 204 }));
  vi.stubGlobal("fetch", f);
  await api.putProgress(1, { page: 2 }, 0.5, true);
  expect(f.mock.calls[0][1].keepalive).toBe(true);
  expect(String(f.mock.calls[0][1].body)).toContain('"percent":0.5');
});