import { chromium, request } from "playwright";
import fs from "node:fs";
import path from "node:path";
import { fileURLToPath } from "node:url";

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

const stamp = new Date().toISOString().replace(/[:.]/g, "-");
const runId = `shared-ai-remote-${Date.now()}`;
const webBase = process.env.SHARED_AI_REMOTE_WEB_URL || "http://192.168.3.90:3003";
const apiBase = process.env.SHARED_AI_REMOTE_API_URL || "http://192.168.3.90:8001/api/v1";
const healthUrl = process.env.SHARED_AI_REMOTE_HEALTH_URL || "http://192.168.3.90:8001/health";
const readinessUrl = process.env.SHARED_AI_REMOTE_READINESS_URL || "http://192.168.3.90:8001/api/v1/system/readiness";
const sharedAiHealthUrl = process.env.SHARED_AI_REMOTE_SHARED_HEALTH_URL || "http://192.168.3.90:18011/health";
const sharedAiProviderStatusUrl = process.env.SHARED_AI_REMOTE_PROVIDER_STATUS_URL || "http://192.168.3.90:18011/api/v0.2/system/platform-readiness";
const artifactDir =
  process.env.SHARED_AI_REMOTE_ARTIFACT_DIR ||
  path.resolve(__dirname, "..", "..", "project-docs", "qa-artifacts", "shared-ai-remote-browser-e2e", stamp);

fs.mkdirSync(artifactDir, { recursive: true });

const results = [];
const state = {
  api: null,
  browser: null,
  member: null,
  contexts: [],
};

function screenshotPath(name) {
  return path.join(artifactDir, `${name}.png`);
}

function apiUrl(route) {
  return `${apiBase.replace(/\/$/, "")}${route}`;
}

function assert(condition, message, details = undefined) {
  if (!condition) {
    const error = new Error(message);
    error.details = details;
    throw error;
  }
}

async function step(id, title, fn) {
  const startedAt = new Date().toISOString();
  const started = Date.now();
  try {
    const details = await fn();
    const item = { id, title, status: "PASS", duration_ms: Date.now() - started, started_at: startedAt, details: details || {} };
    results.push(item);
    console.log(`PASS ${id} ${title}`);
    return item;
  } catch (error) {
    const item = {
      id,
      title,
      status: "FAIL",
      duration_ms: Date.now() - started,
      started_at: startedAt,
      error: error.message,
      details: error.details || {},
    };
    results.push(item);
    console.error(`FAIL ${id} ${title}: ${error.message}`);
    return item;
  }
}

async function apiRequest(method, route, options = {}) {
  const headers = {
    ...(options.authToken ? { Authorization: `Bearer ${options.authToken}` } : {}),
    ...(options.headers || {}),
  };
  const response = await state.api[method](apiUrl(route), { ...options, headers });
  const text = await response.text();
  let body = null;
  if (text) {
    try {
      body = JSON.parse(text);
    } catch {
      body = text;
    }
  }
  return { response, body, text };
}

function expectOk(payload, label) {
  assert(payload.response.status() >= 200 && payload.response.status() < 300, `${label} HTTP ${payload.response.status()}`, {
    body: payload.body,
  });
  if (payload.body && typeof payload.body === "object" && "code" in payload.body) {
    assert(payload.body.code === 0, `${label} API code ${payload.body.code}`, { body: payload.body });
  }
}

async function login(account, password) {
  const payload = await apiRequest("post", "/auth/login", { data: { account, password } });
  expectOk(payload, `login ${account}`);
  return payload.body.data;
}

async function createAuthenticatedContext(userSession) {
  const context = await state.browser.newContext({
    viewport: { width: 1440, height: 1100 },
    acceptDownloads: true,
  });
  await context.addInitScript(
    ({ token, user }) => {
      window.localStorage.setItem("access_token", token);
      window.localStorage.setItem("auth-store", JSON.stringify({ state: { accessToken: token, currentUser: user }, version: 0 }));
    },
    { token: userSession.access_token, user: userSession.user },
  );
  state.contexts.push(context);
  return context;
}

async function run() {
  state.api = await request.newContext();
  state.browser = await chromium.launch({ headless: true });

  await step("ENV-001", "remote frontend, backend and shared-ai health", async () => {
    const [frontend, backendHealth, readiness, sharedAiHealth, providerStatus] = await Promise.all([
      state.api.get(`${webBase}/login`),
      state.api.get(healthUrl),
      state.api.get(readinessUrl),
      state.api.get(sharedAiHealthUrl),
      state.api.get(sharedAiProviderStatusUrl),
    ]);
    assert(frontend.status() === 200, `frontend /login status ${frontend.status()}`);
    assert(backendHealth.status() === 200, `backend /health status ${backendHealth.status()}`);
    assert(readiness.status() === 200, `system readiness status ${readiness.status()}`);
    assert(sharedAiHealth.status() === 200, `shared-ai /health status ${sharedAiHealth.status()}`);
    assert(providerStatus.status() === 200, `provider-status status ${providerStatus.status()}`);
    const providerStatusBody = await providerStatus.json();
    assert(providerStatusBody.data?.provider_default === "openai_compatible", "provider_default should be openai_compatible", providerStatusBody);
    assert(providerStatusBody.data?.provider_openai_compatible_enabled === true, "openai_compatible provider should be enabled", providerStatusBody);
    return { webBase, apiBase, healthUrl, readinessUrl, sharedAiHealthUrl, sharedAiProviderStatusUrl, artifactDir };
  });

  await step("AUTH-001", "register a fresh member for browser acceptance", async () => {
    const username = `${runId}@example.com`;
    const password = "SharedAi123!";
    const displayName = "Shared AI Remote QA";
    const register = await apiRequest("post", "/auth/register", {
      data: { username, password, display_name: displayName },
    });
    expectOk(register, "register remote member");
    state.member = await login(username, password);
    return { username, displayName, role: state.member.user.role };
  });

  await step("BROWSER-REVIEW-001", "submit contract review from the remote web page", async () => {
    const context = await createAuthenticatedContext(state.member);
    const page = await context.newPage();
    await page.goto(`${webBase}/review`, { waitUntil: "domcontentloaded" });
    await page.waitForTimeout(1800);

    const contractText = "This agreement includes auto-renewal, limitation of liability, payment milestones, confidentiality obligations, and liquidated damages. Please produce a structured legal review result in Chinese.";
    const createResponsePromise = page.waitForResponse((response) => response.url().endsWith("/api/v1/reviews") && response.request().method() === "POST" && response.status() === 200, { timeout: 120000 });

    await page.locator("textarea").fill(contractText);
    await page.getByRole("button", { name: /提交审查/ }).click();
    const createResponse = await createResponsePromise;
    const createBody = await createResponse.json();
    assert(createBody.code === 0, "review create API should succeed", createBody);
    const reviewId = createBody.data.id;

    let navigatedViaRouter = true;
    try {
      await page.waitForURL(new RegExp(`/reviews/${reviewId}$`), { timeout: 20000 });
    } catch {
      navigatedViaRouter = false;
      await page.goto(`${webBase}/reviews/${reviewId}`, { waitUntil: "domcontentloaded" });
    }

    const resultResponse = await page.waitForResponse((response) => response.url().includes(`/api/v1/reviews/${reviewId}/result`) && response.status() === 200, { timeout: 120000 });

    const resultBody = await resultResponse.json();
    assert(resultBody.code === 0, "review result API should succeed", resultBody);
    assert(resultBody.data.risk_summary.overall !== "low", "english contract should not degrade to low-risk empty result", resultBody.data);
    assert(["manual_review", "proceed_with_revision", "proceed"].includes(resultBody.data.recommendation), "recommendation should remain on stable enum", resultBody.data);
    assert((resultBody.data.risk_items || []).length >= 3, "risk items should be populated for english contract", resultBody.data);

    const detailBody = await page.locator("body").innerText();
    assert(detailBody.includes("风险总览"), "detail page should render risk overview section", detailBody.slice(0, 2000));
    assert(detailBody.includes("高风险") || detailBody.includes("中风险"), "detail page should render risk labels", detailBody.slice(0, 2500));
    await page.screenshot({ path: screenshotPath("shared-ai-remote-review-detail"), fullPage: true });
    await context.close();
    return {
      screenshot: "shared-ai-remote-review-detail.png",
      url: page.url(),
      review_id: reviewId,
      navigated_via_router: navigatedViaRouter,
      risk_summary: resultBody.data.risk_summary,
      recommendation: resultBody.data.recommendation,
      confidence_summary: resultBody.data.confidence_summary,
    };
  });
}

async function finalize() {
  for (const context of state.contexts) {
    await context.close().catch(() => undefined);
  }
  if (state.browser) {
    await state.browser.close().catch(() => undefined);
  }
  if (state.api) {
    await state.api.dispose().catch(() => undefined);
  }

  const summary = {
    run_id: runId,
    web_base: webBase,
    api_base: apiBase,
    health_url: healthUrl,
    readiness_url: readinessUrl,
    shared_ai_health_url: sharedAiHealthUrl,
    shared_ai_provider_status_url: sharedAiProviderStatusUrl,
    artifact_dir: artifactDir,
    total: results.length,
    passed: results.filter((item) => item.status === "PASS").length,
    failed: results.filter((item) => item.status === "FAIL").length,
    results,
  };
  fs.writeFileSync(path.join(artifactDir, "shared-ai-remote-browser-e2e-summary.json"), JSON.stringify(summary, null, 2), "utf8");
  const markdown = [
    "# Shared AI Remote Browser E2E",
    "",
    `- Run ID: \`${runId}\``,
    `- Web: \`${webBase}\``,
    `- API: \`${apiBase}\``,
    `- Shared AI: \`${sharedAiHealthUrl}\``,
    `- Passed: ${summary.passed}/${summary.total}`,
    "",
    "| ID | Status | Title | Duration |",
    "|---|---|---|---:|",
    ...results.map((item) => `| ${item.id} | ${item.status} | ${item.title.replace(/\|/g, "/")} | ${item.duration_ms}ms |`),
    "",
  ].join("\n");
  fs.writeFileSync(path.join(artifactDir, "shared-ai-remote-browser-e2e-summary.md"), markdown, "utf8");
  console.log(JSON.stringify(summary, null, 2));
  if (summary.failed > 0) {
    process.exitCode = 1;
  }
}

run()
  .catch((error) => {
    results.push({
      id: "RUNNER",
      title: "unhandled runner error",
      status: "FAIL",
      duration_ms: 0,
      started_at: new Date().toISOString(),
      error: error.message,
      details: error.details || {},
    });
    console.error(error);
    process.exitCode = 1;
  })
  .finally(finalize);