import assert from 'node:assert/strict';
import test from 'node:test';
import {
  buildContextPrefix,
  buildMindSpaceChatContext,
  buildSelectedAssetGreeting,
  formatContextChip,
  mindspaceChatContextInternals,
} from './mindspace-chat-context.mjs';

const sampleSpace = {
  id: 'space-1',
  name: '我的空间',
  categories: [
    { code: 'oa', name: 'OA 工作区', itemCount: 12 },
    { code: 'draft', name: '页面草稿', itemCount: 5 },
  ],
};

const sampleCategory = {
  id: 'cat-oa',
  code: 'oa',
  name: 'OA 工作区',
  itemCount: 12,
};

const samplePage = {
  id: 'page-1',
  title: '项目周报',
  summary: '本周项目进展与风险汇总',
  status: 'draft',
  versionNo: 3,
  categoryCode: 'draft',
  templateId: 'report',
  contentFormat: 'markdown',
  pageType: 'article',
  content: '# 周报\n\n- 完成 A 模块\n- 风险：进度偏紧',
};

test('buildMindSpaceChatContext resolves home, category, and page views', () => {
  const home = buildMindSpaceChatContext({
    space: sampleSpace,
    ownerUsername: 'john',
    selectedCategory: null,
    selectedPageId: null,
    pages: [samplePage],
    route: '/space',
  });
  assert.equal(home.view, 'home');
  assert.equal(home.ownerUsername, 'john');
  assert.equal(home.homeCategories?.length, 2);
  assert.equal(home.recentPages?.[0]?.title, '项目周报');

  const category = buildMindSpaceChatContext({
    space: sampleSpace,
    selectedCategory: sampleCategory,
    selectedPageId: null,
    pages: [],
    assets: [
      {
        id: 'asset-1',
        displayName: 'report.xlsx',
        mimeType: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
      },
    ],
    route: '/space?category=oa',
  });
  assert.equal(category.view, 'category');
  assert.deepEqual(category.category?.assets, [
    {
      id: 'asset-1',
      displayName: 'report.xlsx',
      mimeType: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
    },
  ]);

  const page = buildMindSpaceChatContext({
    space: sampleSpace,
    selectedCategory: null,
    selectedPageId: 'page-1',
    pages: [samplePage],
    pageLive: {
      page: samplePage,
      title: '项目周报（编辑中）',
      summary: samplePage.summary,
      content: samplePage.content,
    },
    route: '/space/page/page-1',
  });
  assert.equal(page.view, 'page');
  assert.equal(page.page.title, '项目周报（编辑中）');
  assert.match(page.page.contentExcerpt ?? '', /完成 A 模块/);
  assert.equal(page.category?.code, 'draft');
});

test('buildContextPrefix includes page excerpt and location hint', () => {
  const prefix = buildContextPrefix(
    buildMindSpaceChatContext({
      space: sampleSpace,
      ownerUsername: 'john',
      selectedCategory: null,
      selectedPageId: 'page-1',
      pages: [samplePage],
      pageLive: {
        page: samplePage,
        title: samplePage.title,
        summary: samplePage.summary,
        content: samplePage.content,
      },
      route: '/space/page/page-1',
    }),
  );

  assert.match(prefix, /- 账号：john/);
  assert.match(prefix, /- 页面摘要：本周项目进展与风险汇总/);
  assert.match(prefix, /- 页面模板：分析报告/);
  assert.match(prefix, /- 当前正文摘录/);
  assert.match(prefix, /完成 A 模块/);
  assert.match(prefix, /【定位说明】/);
  assert.match(prefix, /指代「这个页面」「改这里」时默认指该页面/);
  assert.match(prefix, /\n---\n\n$/);
});

test('buildContextPrefix lists category assets on category view', () => {
  const prefix = buildContextPrefix(
    buildMindSpaceChatContext({
      space: sampleSpace,
      selectedCategory: sampleCategory,
      selectedPageId: null,
      pages: [],
      assets: [{ id: 'asset-1', displayName: 'report.xlsx', mimeType: 'text/csv' }],
      route: '/space?category=oa',
    }),
  );

  assert.match(prefix, /- 分类：OA 工作区（oa，共 12 项）/);
  assert.match(prefix, /report\.xlsx（id: asset-1/);
  assert.match(prefix, /指代「这里的文件」时默认指该分类下的资料/);
});

test('formatContextChip prefers page, then category with count, then space name', () => {
  assert.equal(
    formatContextChip({
      spaceName: '我的空间',
      view: 'page',
      route: '/space/page/page-1',
      page: { id: 'page-1', title: '项目周报', versionNo: 3 },
    }),
    '项目周报 · v3',
  );
  assert.equal(
    formatContextChip({
      spaceName: '我的空间',
      view: 'category',
      route: '/space?category=oa',
      category: { code: 'oa', name: 'OA 工作区', itemCount: 12 },
    }),
    'OA 工作区 · 12 项',
  );
});

test('excerptContent strips html and truncates long text', () => {
  const html = '<h1>标题</h1><p>正文内容</p><script>alert(1)</script>';
  assert.equal(
    mindspaceChatContextInternals.excerptContent(html, 'html'),
    '标题 正文内容',
  );
  assert.equal(
    mindspaceChatContextInternals.excerptContent('a'.repeat(20), 'markdown', 10),
    `${'a'.repeat(9)}…`,
  );
});

test('buildMindSpaceChatContext exposes single selected asset as focused asset', () => {
  const asset = {
    id: 'asset-9',
    displayName: 'Q1-report.pdf',
    mimeType: 'application/pdf',
    filename: 'Q1-report.pdf',
    sizeBytes: 1200,
    categoryCode: 'oa',
    assetType: 'file',
  };
  const context = buildMindSpaceChatContext({
    space: sampleSpace,
    selectedCategory: sampleCategory,
    selectedPageId: null,
    pages: [],
    assets: [asset],
    selectedAssets: [asset],
    route: '/space?category=oa',
  });

  assert.equal(context.selectedAssets?.length, 1);
  assert.equal(context.focusedAsset?.id, 'asset-9');
  assert.equal(formatContextChip(context), '已选 · Q1-report.pdf');
});

test('buildContextPrefix binds deictic references to a single checked asset', () => {
  const asset = {
    id: 'asset-9',
    displayName: 'sales.xlsx',
    mimeType: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
    filename: 'sales.xlsx',
    categoryCode: 'oa',
  };
  const prefix = buildContextPrefix(
    buildMindSpaceChatContext({
      space: sampleSpace,
      selectedCategory: sampleCategory,
      selectedPageId: null,
      pages: [],
      assets: [asset],
      selectedAssets: [asset],
      route: '/space?category=oa',
      h5ApiBase: 'http://127.0.0.1:8081',
      agentSessionId: 'session-1',
    }),
  );

  assert.match(prefix, /【界面勾选资料（硬性）】/);
  assert.match(prefix, /sales\.xlsx（id: asset-9/);
  assert.match(prefix, /【勾选资料读取（硬性）】/);
  assert.match(prefix, /mindspace_asset_download/);
  assert.match(prefix, /【勾选资料删除（硬性）】/);
  assert.match(prefix, /mindspace_asset_delete/);
  assert.match(prefix, /完整读写删改权限/);
  assert.match(prefix, /指代「这个文件」「这份报告」「这个数据」时\*\*必须\*\*指该勾选资料/);
});

test('buildContextPrefix includes delete fallback when agent session id is missing', () => {
  const asset = {
    id: 'asset-9',
    displayName: 'sales.xlsx',
    mimeType: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
  };
  const prefix = buildContextPrefix(
    buildMindSpaceChatContext({
      space: sampleSpace,
      selectedCategory: sampleCategory,
      selectedPageId: null,
      pages: [],
      assets: [asset],
      selectedAssets: [asset],
      route: '/space?category=oa',
      h5ApiBase: 'http://127.0.0.1:8081',
    }),
  );
  assert.match(prefix, /CURRENT_AGENT_SESSION/);
});

test('buildContextPrefix requires clarification when multiple assets are checked', () => {
  const assets = [
    { id: 'asset-a', displayName: 'a.pdf', mimeType: 'application/pdf' },
    { id: 'asset-b', displayName: 'b.csv', mimeType: 'text/csv' },
  ];
  const prefix = buildContextPrefix(
    buildMindSpaceChatContext({
      space: sampleSpace,
      selectedCategory: sampleCategory,
      selectedPageId: null,
      pages: [],
      assets,
      selectedAssets: assets,
      route: '/space?category=oa',
    }),
  );

  assert.match(prefix, /同时勾选了 2 份资料/);
  assert.match(prefix, /必须先追问/);
  assert.doesNotMatch(prefix, /当前聚焦资料/);
  assert.equal(formatContextChip(buildMindSpaceChatContext({
    space: sampleSpace,
    selectedCategory: sampleCategory,
    selectedPageId: null,
    pages: [],
    assets,
    selectedAssets: assets,
    route: '/space?category=oa',
  })), '已选 2 项资料');
});

test('buildSelectedAssetGreeting adapts wording to asset kind', () => {
  assert.match(
    buildSelectedAssetGreeting({
      displayName: 'sales.xlsx',
      mimeType: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
    }),
    /这份数据表/,
  );
  assert.match(
    buildSelectedAssetGreeting({
      displayName: 'review.pdf',
      mimeType: 'application/pdf',
    }),
    /这份报告/,
  );
});

test('buildMindSpaceChatContext reconciles stale category itemCount with loaded assets', () => {
  const staleCategory = { ...sampleCategory, itemCount: 0 };
  const asset = {
    id: 'asset-1',
    displayName: 'report.xlsx',
    mimeType: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
    workspaceRelativePath: 'oa/report.xlsx',
  };
  const context = buildMindSpaceChatContext({
    space: {
      ...sampleSpace,
      categories: [{ ...sampleCategory, itemCount: 0 }],
    },
    selectedCategory: staleCategory,
    selectedPageId: null,
    pages: [],
    assets: [asset],
    selectedAssets: [asset],
    route: '/space?category=oa',
    h5ApiBase: 'http://127.0.0.1:8081',
    agentSessionId: 'session-1',
  });

  assert.equal(context.category?.itemCount, 1);
  const prefix = buildContextPrefix(context);
  assert.match(prefix, /OA 工作区（oa，共 1 项）/);
  assert.match(prefix, /已落盘 `oa\/report\.xlsx`/);
  assert.match(prefix, /数据表汇总校验/);
});