import { expect, it, vi } from "vitest";
import { 创建编辑会话 } from "../../src/功能/正文写作/编辑会话";
import { 接口错误 } from "../../src/接口/传输";
import type {
  正文草稿,
  正文记录,
  保存请求,
} from "../../src/功能/正文写作/数据";

const draft = (text: string): 正文草稿 => ({
  format_version: 1,
  paragraphs: [
    { paragraph_id: "p1", content: [{ type: "text", text, marks: [] }] },
  ],
});
const record: 正文记录 = {
  work_id: "w",
  document_id: "doc",
  chapter_id: "c",
  branch_id: "main",
  revision: 1,
  state: "saved",
  document: draft("原稿"),
  visible_text: "原稿",
  document_hash: "hash1",
  visible_text_hash: "text1",
};
const scope = {
  author_id: "a",
  work_id: "w",
  chapter_id: "c",
  branch_id: "main",
};

it("NC-editor-save-generation：保存中的新输入保留，迟到回执只更新原会话", async () => {
  let finish!: (v: {
    revision: number;
    document_hash: string;
    receipt_id: string;
  }) => void;
  const save = vi.fn(
    () =>
      new Promise<{
        revision: number;
        document_hash: string;
        receipt_id: string;
      }>((r) => (finish = r)),
  );
  const buffer = { write: vi.fn(), clear: vi.fn() };
  const session = 创建编辑会话(scope, record, save, buffer);
  session.change(draft("第一稿"));
  const request = session.save();
  session.change(draft("第一稿和新输入"));
  finish({ revision: 2, document_hash: "hash2", receipt_id: "receipt" });
  await request;
  expect(session.snapshot().draft).toEqual(draft("第一稿和新输入"));
  expect(session.snapshot().base_revision).toBe(2);
  expect(session.snapshot().status).toBe("dirty");
  expect(buffer.clear).not.toHaveBeenCalled();
  session.dispose();
  await session.save();
  expect(save).toHaveBeenCalledTimes(1);
});

it("NC-editor-save-conflict：版本冲突保留本地稿且不会自动换基线提交", async () => {
  const save = vi.fn(async () => {
    throw new 接口错误("REVISION_CONFLICT", "正文已更新", 409);
  });
  const session = 创建编辑会话(scope, record, save, {
    write: vi.fn(),
    clear: vi.fn(),
  });
  session.change(draft("我的稿"));
  await session.save();
  await session.save();
  expect(session.snapshot().status).toBe("conflict");
  expect(session.snapshot().draft).toEqual(draft("我的稿"));
  expect(session.snapshot().base_revision).toBe(1);
  expect(save).toHaveBeenCalledTimes(1);
});

it("NC-editor-save-retry：未知结果重试原命令，后续输入不改变在途载荷", async () => {
  const requests: 保存请求[] = [];
  const save = vi.fn(async (r: 保存请求) => {
    requests.push(r);
    if (requests.length === 1)
      throw new 接口错误("NETWORK_UNAVAILABLE", "连接中断", 0);
    return { revision: 2, document_hash: "hash2", receipt_id: "receipt" };
  });
  const session = 创建编辑会话(scope, record, save, {
    write: vi.fn(),
    clear: vi.fn(),
  });
  session.change(draft("发送稿"));
  await session.save();
  session.change(draft("新增内容"));
  await session.save();
  expect(requests[1]).toEqual(requests[0]);
  expect(session.snapshot().draft).toEqual(draft("新增内容"));
  expect(session.snapshot().status).toBe("dirty");
});