#!/usr/bin/env node
"use strict";

const assert = require("node:assert");
const fs = require("node:fs");
const path = require("node:path");
const { chromium, request } = require("playwright");

const BASE_URL = (process.env.MNOTE_WEB_SMOKE_BASE_URL || "http://127.0.0.1:3000").replace(/\/+$/, "");
const ROOT_PATH = process.env.MNOTE_KNOWLEDGE_RAG_ROOT_PATH || "/mnt/Data1T/Mnote_data/users/mnote-e2e/workspaces/my-space";
const ROOT_URI = process.env.MNOTE_KNOWLEDGE_RAG_ROOT_URI || `file://${ROOT_PATH}`;
const WORKSPACE_ID = process.env.MNOTE_KNOWLEDGE_RAG_WORKSPACE_ID || "local-ws:mnote-e2e:my-space";
const OUTPUT_DIR = path.join(process.cwd(), "tmp", "task788-weknora-kb-folder-browser-flow-smoke");
const RESULT_PATH = path.join(OUTPUT_DIR, "result.json");
const FAILURE_PATH = path.join(OUTPUT_DIR, "failure.json");
const SCREENSHOT_PATH = path.join(OUTPUT_DIR, "weknora-kb-folder-browser-flow.png");
const UI_TIMEOUT_MS = Number(process.env.MNOTE_SMOKE_UI_TIMEOUT_MS || 30_000);
const POLL_TIMEOUT_MS = Number(process.env.MNOTE_TASK788_WEKNORA_TIMEOUT_MS || 240_000);
const POLL_INTERVAL_MS = Number(process.env.MNOTE_TASK788_WEKNORA_POLL_MS || 5_000);
const CHROMIUM_EXECUTABLE_PATH = process.env.PLAYWRIGHT_CHROMIUM_EXECUTABLE_PATH
  || ["/usr/bin/chromium-browser", "/usr/bin/google-chrome-stable", "/usr/bin/google-chrome", "/snap/bin/chromium", "/usr/bin/chromium"]
    .find((candidate) => fs.existsSync(candidate));

function writeJson(filePath, payload) {
  fs.mkdirSync(path.dirname(filePath), { recursive: true });
  fs.writeFileSync(filePath, `${JSON.stringify(payload, null, 2)}\n`, "utf8");
}

function sleep(ms) {
  return new Promise((resolve) => setTimeout(resolve, ms));
}

function failLayer(layer, message, details = {}) {
  const error = new Error(message);
  error.layer = layer;
  error.details = details;
  return error;
}

async function signInRequest(context) {
  const response = await context.post(`${BASE_URL}/api/auth`, {
    data: {
      action: "auth:signIn",
      args: {
        provider: "password",
        params: {
          email: "mnote.e2e@example.com",
          password: process.env.MNOTE_E2E_PASSWORD || "MnoteE2E123!",
          flow: "signIn",
        },
      },
    },
    timeout: UI_TIMEOUT_MS,
  });
  assert(response.ok(), `登录失败: ${response.status()} ${await response.text()}`);
}

async function signInBrowser(context) {
  const response = await context.request.post(`${BASE_URL}/api/auth`, {
    data: {
      action: "auth:signIn",
      args: {
        provider: "password",
        params: {
          email: "mnote.e2e@example.com",
          password: process.env.MNOTE_E2E_PASSWORD || "MnoteE2E123!",
          flow: "signIn",
        },
      },
    },
    timeout: UI_TIMEOUT_MS,
  });
  assert(response.ok(), `浏览器上下文登录失败: ${response.status()} ${await response.text()}`);
}

async function apiJson(context, method, url, data) {
  const response = await context.fetch(url, {
    method,
    data,
    headers: {
      "x-mnote-actor-id": "mnote-e2e",
      "x-mnote-actor-type": "user",
      "x-mnote-workspace-id": WORKSPACE_ID,
      accept: "application/json",
    },
    timeout: UI_TIMEOUT_MS,
  });
  const text = await response.text();
  let payload = null;
  try {
    payload = text ? JSON.parse(text) : null;
  } catch {
    payload = { rawText: text };
  }
  return { ok: response.ok(), status: response.status(), payload, text };
}

async function status(context) {
  const params = new URLSearchParams({ rootUri: ROOT_URI, workspaceId: WORKSPACE_ID });
  const result = await apiJson(context, "GET", `${BASE_URL}/api/knowledge-rag/status?${params.toString()}`);
  if (!result.ok) {
    throw failLayer("mnote_status_http", `status HTTP ${result.status}`, { response: result.payload || result.text });
  }
  return result.payload;
}

async function createKnowledgeBase(context, name, description) {
  const result = await apiJson(context, "POST", `${BASE_URL}/api/knowledge-rag/knowledge-bases`, {
    rootUri: ROOT_URI,
    workspaceId: WORKSPACE_ID,
    name,
    description,
    defaultToolEnabled: true,
  });
  if (!result.ok) {
    throw failLayer("mnote_create_kb_http", `create KB HTTP ${result.status}`, { response: result.payload || result.text });
  }
  const payload = result.payload;
  assert.equal(payload?.provider, "weknora", "create KB provider 应为 weknora");
  assert(payload?.providerKnowledgeBaseId, `create KB 缺少 providerKnowledgeBaseId: ${JSON.stringify(payload, null, 2).slice(0, 1200)}`);
  assert.equal(payload?.knowledgeBase?.provider, "weknora", "knowledgeBase provider 应为 weknora");
  assert.equal(payload?.knowledgeBase?.providerKbId, payload.providerKnowledgeBaseId, "knowledgeBase.providerKbId 应匹配 providerKnowledgeBaseId");
  return payload;
}

async function ingestFolder(context, folderPath, providerKnowledgeBaseId) {
  const result = await apiJson(context, "POST", `${BASE_URL}/api/knowledge-rag/ingest`, {
    rootUri: ROOT_URI,
    workspaceId: WORKSPACE_ID,
    force: true,
    providerKnowledgeBaseId,
    sources: [{ sourcePath: folderPath }],
  });
  if (!result.ok) {
    throw failLayer("mnote_ingest_folder_http", `ingest folder HTTP ${result.status}`, { response: result.payload || result.text });
  }
  const payload = result.payload;
  assert.equal(payload?.provider, "weknora", "ingest provider 应为 weknora");
  const configured = Array.isArray(payload.configuredSources) ? payload.configuredSources : [];
  assert(configured.length >= 2, `文件夹入库应至少展开两个文件: ${JSON.stringify(configured, null, 2).slice(0, 1600)}`);
  const mapped = configured.filter((item) => item.mappingStatus === "provider_mapped" && item.providerKnowledgeBaseId === providerKnowledgeBaseId);
  assert(mapped.length >= 2, `文件夹入库未全部映射到新 KB: ${JSON.stringify(configured, null, 2).slice(0, 2000)}`);
  const registryEntries = payload.registry?.entries || [];
  const folderEntries = registryEntries.filter((entry) => String(entry.sourceRootRelativePath || "").startsWith(`${folderPath}/`));
  assert(folderEntries.length >= 2, "source registry 应写入文件夹下的 source");
  assert(folderEntries.every((entry) => entry.provider === "weknora"), "source registry provider 应为 weknora");
  assert(folderEntries.every((entry) => entry.providerKnowledgeBaseId === providerKnowledgeBaseId), "source registry 应写入新 KB id");
  return { payload, configured, mapped, folderEntries };
}

async function searchUntilHit(context, query, folderPath, providerKnowledgeBaseId) {
  const startedAt = Date.now();
  let lastPayload = null;
  while (Date.now() - startedAt < POLL_TIMEOUT_MS) {
    const result = await apiJson(context, "POST", `${BASE_URL}/api/knowledge-rag/search`, {
      rootUri: ROOT_URI,
      workspaceId: WORKSPACE_ID,
      query,
      mode: "hybrid",
      topK: 10,
      chunkTopK: 10,
      includeChunkContent: true,
      providerKnowledgeBaseId,
      sourcePaths: [folderPath],
    });
    if (!result.ok) {
      throw failLayer("mnote_search_http", `search HTTP ${result.status}`, { response: result.payload || result.text });
    }
    lastPayload = result.payload;
    const hit = (lastPayload.references || []).find((reference) => {
      const pathText = String(reference.sourceRootRelativePath || "");
      const quote = `${reference.rawQuote || ""}\n${reference.displayQuote || ""}\n${reference.quote || ""}`;
      return reference.provider === "weknora"
        && reference.providerKnowledgeBaseId === providerKnowledgeBaseId
        && (pathText.startsWith(`${folderPath}/`) || quote.includes(query));
    });
    if (hit) return { payload: lastPayload, reference: hit };
    await sleep(POLL_INTERVAL_MS);
  }
  throw failLayer("weknora_new_kb_folder_search_timeout", "等待新 KB 文件夹入库内容可搜索超时", {
    query,
    folderPath,
    providerKnowledgeBaseId,
    lastPayload,
  });
}

function createFolderFixture(startedAt) {
  if (!fs.existsSync(ROOT_PATH)) {
    throw failLayer("allowed_root_missing", `allowed root 不存在: ${ROOT_PATH}`);
  }
  const marker = `task788 weknora kb folder browser marker ${startedAt}`;
  const markers = [`${marker} alpha`, `${marker} beta`];
  const folderPath = `knowledge-rag-fixtures-7-68/task788-folder-${startedAt}`;
  const absoluteFolderPath = path.join(ROOT_PATH, folderPath);
  const sourcePaths = [`${folderPath}/alpha.md`, `${folderPath}/beta.md`];
  fs.mkdirSync(absoluteFolderPath, { recursive: true });
  fs.writeFileSync(
    path.join(absoluteFolderPath, "alpha.md"),
    `# Task 788 Alpha\n\n${markers[0]}\n\nWeKnora folder browser flow alpha note.\n`,
    "utf8",
  );
  fs.writeFileSync(
    path.join(absoluteFolderPath, "beta.md"),
    `# Task 788 Beta\n\n${markers[1]}\n\nWeKnora folder browser flow beta note.\n`,
    "utf8",
  );
  return { folderPath, absoluteFolderPath, sourcePaths, marker, markers };
}

async function verifyInBrowser(fixture, name) {
  const browser = await chromium.launch({
    headless: true,
    ...(CHROMIUM_EXECUTABLE_PATH ? { executablePath: CHROMIUM_EXECUTABLE_PATH } : {}),
  });
  const context = await browser.newContext({ viewport: { width: 1360, height: 900 } });
  const page = await context.newPage();
  try {
    await signInBrowser(context);
    const url = new URL(`${BASE_URL}/`);
    url.searchParams.set("sourceKind", "local_folder");
    url.searchParams.set("rootUri", ROOT_URI);
    url.searchParams.set("workspaceId", WORKSPACE_ID);
    url.searchParams.set("treeView", "filetree");
    await page.goto(url.toString(), { waitUntil: "domcontentloaded", timeout: UI_TIMEOUT_MS });

    const knowledgeEntry = page.locator('[data-testid="mnote-knowledge-rag-settings-toggle"]');
    assert.equal(await knowledgeEntry.getAttribute("href"), "/knowledge", "主知识库入口应打开 WeKnora 原生 host");
    assert.equal(await knowledgeEntry.getAttribute("data-mnote-action"), "open-knowledge-host", "主知识库入口不应再打开旧设置壳");
    await page.goto(`${BASE_URL}/debug/knowledge-rag`, { waitUntil: "domcontentloaded", timeout: UI_TIMEOUT_MS });
    const panel = page.locator('[data-testid="mnote-weknora-knowledge-settings-panel"]');
    await panel.waitFor({ state: "visible", timeout: UI_TIMEOUT_MS });
    assert.equal(await panel.getAttribute("data-knowledge-rag-default-provider"), "weknora", "设置面板应声明 WeKnora provider");

    await panel.locator('[data-testid="mnote-weknora-create-kb-name"]').fill(name);
    await panel.locator('[data-testid="mnote-weknora-create-kb-description"]').fill("MNote task788 temporary KB created through browser settings UI");
    await panel.locator('[data-knowledge-rag-action="create-kb"]').click({ timeout: UI_TIMEOUT_MS });
    const kbSelect = panel.locator('[data-testid="mnote-weknora-kb-select"]');
    await page.waitForFunction(
      (expectedName) => {
        const status = document.querySelector('[data-testid="mnote-weknora-create-kb-status"]');
        if (!(status instanceof HTMLElement) || status.getAttribute("data-status") !== "done") return false;
        const select = document.querySelector('[data-testid="mnote-weknora-kb-select"]');
        if (!(select instanceof HTMLSelectElement) || !select.value.trim()) return false;
        const selected = select.options[select.selectedIndex];
        return selected && selected.textContent.includes(expectedName);
      },
      name,
      { timeout: UI_TIMEOUT_MS },
    );
    const providerKnowledgeBaseId = await kbSelect.inputValue();
    assert(providerKnowledgeBaseId, "UI 创建 KB 后应选中新 providerKnowledgeBaseId");

    const firstSourceInput = panel.locator('[data-knowledge-rag-source-input]').first();
    await firstSourceInput.fill(fixture.folderPath);
    await panel.locator('[data-knowledge-rag-action="ingest"]').click({ timeout: UI_TIMEOUT_MS });
    await page.locator('[data-knowledge-rag-action="filter-sources"][data-knowledge-rag-filter="all"]').first().click({ timeout: UI_TIMEOUT_MS });
    const sourceRows = await Promise.all(fixture.sourcePaths.map(async (sourcePath) => {
      const row = page.locator(`[data-knowledge-rag-source-row="true"][data-knowledge-rag-source-path="${sourcePath}"]`).first();
      await row.waitFor({ state: "visible", timeout: POLL_TIMEOUT_MS });
      await row.locator('[data-knowledge-rag-action="open-source-reference"]').waitFor({ state: "visible", timeout: UI_TIMEOUT_MS });
      return sourcePath;
    }));

    const kbSummary = panel.locator('[data-testid="mnote-weknora-kb-summary"]');
    await kbSummary.waitFor({ state: "visible", timeout: UI_TIMEOUT_MS });
    const kbIds = await kbSummary.getAttribute("data-knowledge-rag-kb-ids");
    const sourceRowsForKb = await panel.locator(`[data-knowledge-rag-source-row="true"][data-knowledge-rag-kb-id="${providerKnowledgeBaseId}"]`).count();
    assert(sourceRowsForKb >= 2, `source rows 未反映新建 KB id: ${providerKnowledgeBaseId}`);

    await panel.locator('[data-kb-rag-tab="search"]').click({ timeout: UI_TIMEOUT_MS });
    await panel.locator('[data-kb-rag-search-input]').fill(fixture.markers[0]);
    let searchResultSourcePath = null;
    const startedAt = Date.now();
    while (Date.now() - startedAt < POLL_TIMEOUT_MS) {
      await panel.locator('[data-kb-rag-action="search"]').click({ timeout: UI_TIMEOUT_MS });
      const result = panel.locator(`[data-kb-rag-search-result="true"][data-knowledge-rag-kb-id="${providerKnowledgeBaseId}"]`).first();
      try {
        await result.waitFor({ state: "visible", timeout: POLL_INTERVAL_MS });
        searchResultSourcePath = await result.getAttribute("data-knowledge-rag-source-path");
        break;
      } catch {
        await sleep(POLL_INTERVAL_MS);
      }
    }
    assert(searchResultSourcePath, `UI 检索未展示新 KB ${providerKnowledgeBaseId} 的结果`);
    await panel.locator('[data-kb-rag-search-result="true"] [data-knowledge-rag-action="open-source-reference"]').first().waitFor({ state: "visible", timeout: UI_TIMEOUT_MS });

    await page.screenshot({ path: SCREENSHOT_PATH, fullPage: true });
    return {
      providerKnowledgeBaseId,
      kbSummaryVisible: true,
      kbSummaryConfiguredKbIds: String(kbIds || "").split(",").filter(Boolean),
      sourceRowsForKb,
      sourceRowsVisible: sourceRows,
      searchResultVisible: true,
      searchResultSourcePath,
      searchVerifiedByApi: false,
      searchUiProviderKbScopeMissing: false,
      openReferenceControlsVisible: true,
      screenshot: SCREENSHOT_PATH,
    };
  } catch (error) {
    await page.screenshot({ path: SCREENSHOT_PATH, fullPage: true }).catch(() => undefined);
    throw failLayer("browser_ui_verify", error.message || String(error), { screenshot: SCREENSHOT_PATH });
  } finally {
    await browser.close().catch(() => undefined);
  }
}

async function main() {
  fs.mkdirSync(OUTPUT_DIR, { recursive: true });
  const context = await request.newContext({ baseURL: BASE_URL });
  try {
    await signInRequest(context);
    const startedAt = Date.now();
    const fixture = createFolderFixture(startedAt);
    const name = `task788-weknora-kb-${startedAt}`;
    const browserResult = await verifyInBrowser(fixture, name);
    const providerKnowledgeBaseId = browserResult.providerKnowledgeBaseId;
    const searchResult = await searchUntilHit(context, fixture.markers[0], fixture.folderPath, providerKnowledgeBaseId);
    const afterStatus = await status(context);
    const statusBase = (afterStatus.knowledgeBases?.bases || []).find((base) => base.providerKbId === providerKnowledgeBaseId);
    assert(statusBase, "status knowledgeBases 应包含新建 KB");
    assert(statusBase.sourceCount >= 2, `新建 KB sourceCount 应 >= 2: ${JSON.stringify(statusBase, null, 2)}`);

    const result = {
      ok: true,
      task: "task788-weknora-kb-folder-browser-flow-smoke",
      baseUrl: BASE_URL,
      rootUri: ROOT_URI,
      workspaceId: WORKSPACE_ID,
      uiCreatesKb: true,
      uiAddsFolder: true,
      browserVerifiesKb: true,
      browserVerifiesSearch: true,
      browserVerifiesOpenReferenceControls: true,
      apiVerifiesSearch: true,
      folderPath: fixture.folderPath,
      absoluteFolderPath: fixture.absoluteFolderPath,
      markers: fixture.markers,
      knowledgeBase: {
        name,
        providerKnowledgeBaseId,
        baseId: statusBase.baseId,
        defaultToolEnabled: statusBase.defaultToolEnabled,
        sourceCount: statusBase.sourceCount,
        status: statusBase.status,
      },
      ingest: {
        configuredCount: fixture.sourcePaths.length,
        mappedCount: fixture.sourcePaths.length,
        sourcePaths: fixture.sourcePaths,
      },
      apiSearch: {
        provider: searchResult.payload.provider,
        sourceRootRelativePath: searchResult.reference.sourceRootRelativePath,
        providerKnowledgeBaseId: searchResult.reference.providerKnowledgeBaseId,
        providerKnowledgeId: searchResult.reference.providerKnowledgeId,
        providerChunkId: searchResult.reference.providerChunkId,
      },
      browser: browserResult,
    };
    writeJson(RESULT_PATH, result);
    console.log(JSON.stringify(result, null, 2));
  } finally {
    await context.dispose().catch(() => undefined);
  }
}

main().catch((error) => {
  const payload = {
    ok: false,
    task: "task788-weknora-kb-folder-browser-flow-smoke",
    layer: error.layer || "unexpected",
    error: error.stack || error.message || String(error),
    details: error.details || null,
    baseUrl: BASE_URL,
    rootUri: ROOT_URI,
    workspaceId: WORKSPACE_ID,
  };
  writeJson(FAILURE_PATH, payload);
  console.error(JSON.stringify(payload, null, 2));
  process.exit(1);
});