// @vitest-environment jsdom
// docPaneMount.test.js —— DocPane 空态挂载 + removeLibrary 204 处理（T1 骨架，对齐 A1 交付）
// 对应用例：TC-PRIV-L3-08（DocPane 空态挂载）、TC-PRIV-L1-41（removeLibrary 204）。
// 修正（A1 交付对齐）：L1-41 只 mock http.js 边界——api/docgen.js 的 removeLibrary 走
// A1 真实实现（del 返回 null → 包装 {ok:true}，即 204 空体兜底路径）。
import { describe, it, expect, vi, beforeEach } from 'vitest';
import { mount, flushPromises } from '@vue/test-utils';
import { setActivePinia, createPinia } from 'pinia';

vi.mock('../../src/api/http.js', () => ({
  // 204 空体契约：http 层对空体返回 null（A1 removeLibrary 依赖此语义）
  del: vi.fn(async (path) => null),
  get: vi.fn(async (path) => ({ ok: true, items: [] })),
  post: vi.fn(async () => ({ ok: true })),
  patch: vi.fn(async () => ({ ok: true })),
  ApiError: class ApiError extends Error {
    constructor(message, opts = {}) {
      super(message);
      this.code = opts.code || 'INTERNAL';
    }
  },
}));

// DocPane 依赖 docgen store（activeArtifact 驱动空态）；面板组件随空态挂载
import DocPane from '../../src/components/bench/DocPane.vue';
import { useDocgenStore } from '../../src/stores/docgen.js';

describe('DocPane 空态挂载（FR-PRIV-006 / UI_SPEC §9.2）', () => {
  beforeEach(() => {
    setActivePinia(createPinia());
  });

  it('TC-PRIV-L3-08 空态：PrivateLibraryPane 挂载于 .doc-empty 内（顶部位置）', async () => {
    const docgen = useDocgenStore();
    docgen.activeArtifact = null;
    const wrapper = mount(DocPane, {
      global: {
        stubs: { PrivateLibraryPane: true },
      },
    });
    await flushPromises();
    const empty = wrapper.find('.doc-empty');
    expect(empty.exists()).toBe(true);
    const pane = wrapper.findComponent({ name: 'PrivateLibraryPane' });
    expect(pane.exists()).toBe(true);
    // 空态区第一个子元素为面板（UI_SPEC：挂空态区顶部，其余空态内容不动）
    const firstChild = empty.element.children[0];
    expect(firstChild).toBeTruthy();
    expect(firstChild.className || firstChild.tagName).toBeTruthy();
    // 图标与空态文案仍在（其余空态内容不动）
    expect(wrapper.text()).toContain('📄');
  });

  it('TC-PRIV-L3-08 有活动文档时面板隐藏', async () => {
    const docgen = useDocgenStore();
    docgen.activeArtifact = { artifact_id: 'art-1', title: 't' };
    const wrapper = mount(DocPane, {
      global: { stubs: { PrivateLibraryPane: true } },
    });
    await flushPromises();
    expect(wrapper.find('.doc-empty').exists()).toBe(false);
    expect(wrapper.findComponent({ name: 'PrivateLibraryPane' }).exists()).toBe(false);
  });
});

describe('removeLibrary 204 空体处理（TC-PRIV-L1-41）', () => {
  beforeEach(() => {
    setActivePinia(createPinia());
  });

  it('DELETE 返回 204 空体时 removeLibrary 仍返回 {ok:true}（不抛 JSON 解析错）', async () => {
    const { removeLibrary } = await import('../../src/api/docgen.js');
    // http mock 的 del 返回 null（204 空体兜底语义），走 A1 真实 removeLibrary
    const result = await removeLibrary('lib-1');
    expect(result.ok).toBe(true);
    const { del } = await import('../../src/api/http.js');
    expect(del).toHaveBeenCalledWith('/api/docgen/library/lib-1');
  });
});