/**
 * workspace 首页、board 创建/重命名与 URL 的请求契约单元测试。request 替身记录调用次序和 payload，不运行 HTTP 或数据库。
 * 首次创建 workspace 与 board 不是一个服务端事务：workspace 成功后需先通知调用者保留身份，即使后续 board 失败。
 */
import { test } from "node:test";
import assert from "node:assert/strict";
import { boardHref, createBoard, renameBoard, DEFAULT_BOARD_TITLE, loadWorkspaceHome } from "../src/lib/workspace.ts";

// 把两个请求都挂起后检查启动记录，证明 profile/workspaces 无串行瀑布；分别释放再检查结果整合和头像。
test("profile and workspace reads both start before either completes", async () => {
  const calls = [];
  const resolve = {};
  const pending = loadWorkspaceHome((path) => {
    calls.push(path);
    return new Promise((done) => {
      resolve[path] = done;
    });
  });
  assert.deepEqual(calls, ["profile", "workspaces"]);
  resolve.profile({ id: "user", avatar_url: "https://lh3.googleusercontent.com/test-avatar" });
  resolve.workspaces({ items: [{ id: "space", name: "个人空间" }] });
  const result = await pending;
  assert.equal(result.profile.id, "user");
  assert.equal(result.profile.avatar_url, "https://lh3.googleusercontent.com/test-avatar");
  assert.equal(result.workspaces[0].id, "space");
});

// 没有 workspace 时先创建个人空间并回调选中，再提交 board；标题去首尾空白，不能在通知调用者前继续第二步。
test("a first board creates its personal workspace before posting the board", async () => {
  const calls = [];
  let selected = "";
  const result = await createBoard(
    async (path, options) => {
      calls.push([path, JSON.parse(options.body)]);
      if (path === "workspaces") return { id: "space", name: "个人空间" };
      assert.equal(selected, "space");
      return { id: "board" };
    },
    " 周末的灵感 ",
    "",
    (w) => {
      selected = w.id;
    },
  );
  assert.equal(result.id, "board");
  assert.deepEqual(
    calls.map(([p]) => p),
    ["workspaces", "workspaces/space/materials"],
  );
  assert.equal(calls[1][1].title, "周末的灵感");
});

// 第一次 board 失败仍保留回调给出的 workspace ID；重试只创建 board，个人空间计数仍为一。
test("a board failure retains the new workspace, so retry creates no duplicate space", async () => {
  let selected = "";
  let spaces = 0;
  let fail = true;
  const request = async (path) => {
    if (path === "workspaces") {
      spaces++;
      return { id: "space", name: "个人空间" };
    }
    if (fail) throw new Error("upstream_unavailable");
    return { id: "board" };
  };
  await assert.rejects(
    createBoard(request, "作品", selected, (w) => {
      selected = w.id;
    }),
  );
  fail = false;
  await createBoard(request, "作品", selected, () =>
    assert.fail("duplicate workspace"),
  );
  assert.equal(spaces, 1);
});

// 已有 workspace 直接向其 materials 提交，创建空间回调不得执行。
test("an existing workspace posts a board directly", async () => {
  const calls = [];
  await createBoard(
    async (path) => {
      calls.push(path);
      return { id: "board" };
    },
    "作品",
    "existing",
    () => assert.fail("unexpected workspace"),
  );
  assert.deepEqual(calls, ["workspaces/existing/materials"]);
});


// 空白名称回退默认图谱标题，payload 明确 kind/content schema；返回身份采用服务分配 ID，不能另造本地替代 ID。
test("new graphs use a default name and retain the Foundry-assigned identity", async () => {
  const created = await createBoard(async (path, options) => {
    assert.equal(path, "workspaces/space/materials");
    assert.deepEqual(JSON.parse(options.body), {
      kind: "board", title: DEFAULT_BOARD_TITLE, content: { schema_version: 1 },
    });
    return { id: "server-generated-id", workspace_id: "space", kind: "board", version: 1 };
  }, "  ", "space", () => assert.fail("unexpected workspace creation"));
  assert.equal(created.id, "server-generated-id");
  assert.equal(created.workspace_id, "space");
  assert.equal(created.title, "未命名图谱");
  assert.equal(boardHref(created.workspace_id, created.id), "/dashboard/space/server-generated-id");
});

// workspace 和 board 分段编码，特殊斜线/问号不能改变路由结构；demo 查询参数单独追加。
test("graph URLs preserve workspace identity and safely encode route segments", () => {
  assert.equal(boardHref("space/a", "id?b"), "/dashboard/space%2Fa/id%3Fb");
  assert.equal(boardHref("demo", "board", true), "/dashboard/demo/board?demo=1");
});


// 重命名前读取最新版本，以 If-Match=7 PATCH，保留 description/content；响应为空时 helper 合成标题及 version=8 返回值，非服务端实际版本证明。
test("renaming reads the latest version and preserves description and content", async () => {
  const calls = [];
  const content = { schema_version: 1, preserved: { key: "value" } };
  const renamed = await renameBoard(async (path, options) => {
    calls.push(path);
    if (!options) return { id: "board", workspace_id: "space", kind: "board", title: "Old", version: 7, description: "Keep this", content };
    assert.equal(options.method, "PATCH");
    assert.equal(options.headers["If-Match"], '"7"');
    assert.deepEqual(JSON.parse(options.body), { title: "新名称", description: "Keep this", content });
    return null;
  }, "space", "board", " 新名称 ");
  assert.deepEqual(calls, ["workspaces/space/materials/board", "workspaces/space/materials/board"]);
  assert.equal(renamed.title, "新名称");
  assert.equal(renamed.version, 8);
});

// 空白或超过 100 字符的标题在请求前拒绝；用 assert.fail 确保没有任何 API 调用。
test("rename rejects empty or oversized names without any API calls", async () => {
  for (const name of ["   ", "字".repeat(101)]) {
    await assert.rejects(renameBoard(() => assert.fail("unexpected API call"), "space", "board", name), /invalid_title/);
  }
});

// PATCH 版本冲突原样抛出且只调用一次，不能自动重试覆盖新内容。
test("rename surfaces a version conflict without retrying or overwriting", async () => {
  let patches = 0;
  await assert.rejects(renameBoard(async (_path, options) => {
    if (!options) return { id: "board", workspace_id: "space", kind: "board", title: "Old", version: 1 };
    patches++;
    throw new Error("version_conflict");
  }, "space", "board", "New"), /version_conflict/);
  assert.equal(patches, 1);
});