import assert from "node:assert/strict";
import test from "node:test";
import { mkdtempSync, readFileSync, rmSync } from "node:fs";
import os from "node:os";
import path from "node:path";
import { observeGuestEntry, observeNativeEngine, observeNativeProbe, recordNativeProbe } from "../browser-environment-probe.mjs";

function fixture({ refresh = false, failed = false, online = true, documentOnline = true, cookies = [], status = 200 } = {}) {
  const handlers = {};
  let navigated = false;
  const page = {
    on(event, handler) { handlers[event] = handler; },
    async addInitScript() {},
    async evaluate() { return online; },
    async goto() {
      assert.ok(handlers.request);
      navigated = true;
      handlers.console({ text: () => `QA_ENV_DOCUMENT_ONLINE:${documentOnline}` });
      handlers.console({ text: () => "QA_ENV_DOCUMENT_ONLINE:true" });
      if (refresh) {
        const request = { url: () => "http://127.0.0.1/api/auth/refresh" };
        handlers.request(request);
        if (failed) handlers.requestfailed(request);
      }
      return { status: () => status };
    },
    getByTestId() { return { async waitFor() {} }; },
    url() { return "http://127.0.0.1/login"; },
    async close() {},
  };
  return { context: { async storageState() { return { cookies, origins: [] }; }, async newPage() { return page; } }, navigated: () => navigated };
}

test("在线新 context、表单及零 refresh 是独立事实", async () => {
  const owned = fixture();
  const result = await observeGuestEntry(owned.context, "http://127.0.0.1");
  assert.equal(result.valid, true);
  assert.equal(result.refreshRequestCount, 0);
  assert.equal(result.noRouteMocks, true);
});
for (const failed of [false, true]) test(`表单可见但 refresh 已尝试必须拒绝，失败请求=${failed}`, async () => {
  const result = await observeGuestEntry(fixture({ refresh: true, failed }).context, "http://127.0.0.1");
  assert.equal(result.valid, false);
  assert.equal(result.refreshRequestCount, 1);
  assert.equal(result.refreshFailedCount, Number(failed));
  assert.ok(result.failures.includes("refresh_attempt_observed"));
});
test("首次 document-start 离线不可被后续 true 覆盖", async () => {
  const result = await observeGuestEntry(fixture({ documentOnline: false }).context, "http://127.0.0.1");
  assert.equal(result.nativeOnlineSamples.documentStart, false);
  assert.equal(result.valid, false);
});
for (const options of [{ online: false }, { cookies: [{ name: "has_session", value: "1" }] }]) test(`前置无效不导航 ${JSON.stringify(options)}`, async () => {
  const owned = fixture(options);
  assert.equal((await observeGuestEntry(owned.context, "http://127.0.0.1")).valid, false);
  assert.equal(owned.navigated(), false);
});
test("非候选 HTTP 200 不合格，禁止公网探针", async () => {
  assert.equal((await observeGuestEntry(fixture({ status: 500 }).context, "http://127.0.0.1")).valid, false);
  await assert.rejects(observeGuestEntry(fixture().context, "https://example.invalid"), /requires_loopback/);
});

function nativeFixture({ faults = {}, online = true, events = [], name = "webkit" } = {}) {
  const step = stage => {
    events.push(`${name}:${stage}`);
    if (faults[stage]) throw faults[stage];
  };
  const context = {
    tracing: { async start() { step("trace_start"); }, async stop() { step("trace_stop"); } },
    async newPage() { step("page"); return { async evaluate() { step("online"); return online; } }; },
    async close() { step("context_close"); },
  };
  const browser = {
    version() { step("version"); return "26.0"; },
    async newContext(options) { step("context"); assert.equal(options.serviceWorkers, "block"); return context; },
    async close() { step("browser_close"); },
  };
  return {
    engine: {
      async launchServer(options) {
        step("launch"); assert.deepEqual(options, { headless: true, host: "127.0.0.1" });
        return {
          process() { step("namespace"); return { pid: 123 }; },
          wsEndpoint() { return "ws://127.0.0.1/synthetic-private-endpoint"; },
          async close() { step("server_close"); }, async kill() { step("server_kill"); },
        };
      },
      async connect() { step("connect"); return browser; },
    }, events,
  };
}
const nativeOwner = { ownedNamespace: "child", environmentDir: "synthetic-output" };
const nativeOptions = { fingerprint: () => "child", tracePath: "synthetic-trace.zip" };

for (const stage of ["launch", "namespace", "connect", "version", "context", "trace_start", "page", "online", "trace_stop", "context_close", "browser_close", "server_close"]) {
  test(`native ${stage} 失败保留引擎、阶段和安全原因，继续清理`, async () => {
    const error = Object.assign(new Error("synthetic-private-endpoint /private/synthetic/path secret=do-not-record"), { code: "EACCES" });
    const fake = nativeFixture({ faults: { [stage]: error } });
    const result = await observeNativeEngine(fake.engine, "webkit", nativeOwner, nativeOptions);
    assert.equal(result.name, "webkit");
    assert.equal(result.valid, false);
    assert.equal(result.failureStage, stage);
    assert.equal(result.failures[0].systemCode, "EACCES");
    assert.doesNotMatch(JSON.stringify(result), /private|secret|do-not-record|stack|ws:\/\//);
    assert.equal(fake.events.includes("webkit:server_close"), stage !== "launch");
    assert.equal(fake.events.includes("webkit:server_kill"), stage === "server_close");
  });
}

test("清理失败不能覆盖首因，kill失败也有记录", async () => {
  const fault = new Error("synthetic failure");
  const fake = nativeFixture({ faults: { online: fault, trace_stop: fault, context_close: fault, browser_close: fault, server_close: fault, server_kill: fault } });
  const result = await observeNativeEngine(fake.engine, "webkit", nativeOwner, nativeOptions);
  assert.equal(result.failureStage, "online");
  assert.deepEqual(result.failures.map(failure => failure.stage), ["online", "trace_stop", "context_close", "browser_close", "server_close", "server_kill"]);
});

for (const [error, expected] of [
  [Object.assign(new Error("private timeout"), { name: "TimeoutError" }), { errorKind: "probe_timeout" }],
  [new Error("/private/MiniBrowser: error while loading shared libraries: private.so"), { errorKind: "browser_dependency_missing" }],
  [new Error("Executable doesn't exist at /private/engine"), { errorKind: "browser_executable_missing" }],
  [new Error("Permission denied /private/engine"), { errorKind: "browser_permission_denied" }],
  [new Error("Target page, context or browser has been closed\n<process did exit: exitCode=null, signal=SIGSEGV>"), { errorKind: "browser_process_closed", processExitCode: null, processSignal: "SIGSEGV" }],
]) test(`native 安全错误分类 ${expected.errorKind}`, async () => {
  const result = await observeNativeEngine(nativeFixture({ faults: { launch: error } }).engine, "webkit", nativeOwner, nativeOptions);
  assert.deepEqual(result.failures, [{ stage: "launch", ...expected }]);
});

test("错误namespace不连接；false和缺失online不通过", async () => {
  const fake = nativeFixture();
  const mismatch = await observeNativeEngine(fake.engine, "webkit", nativeOwner, { fingerprint: () => "other" });
  assert.equal(mismatch.valid, false);
  assert.equal(mismatch.errorKind, "environment_browser_namespace_mismatch");
  assert.equal(fake.events.includes("webkit:connect"), false);
  for (const online of [false, null, "synthetic-sensitive-value"]) {
    const result = await observeNativeEngine(nativeFixture({ online }).engine, "webkit", nativeOwner, nativeOptions);
    assert.equal(result.valid, false);
    assert.equal(result.failureStage, "online");
    assert.equal(result.online, online === false ? false : null);
  }
});

test("两引擎通过且Chromium保持存活直到WebKit清理", async () => {
  const events = [];
  const chromium = nativeFixture({ name: "chromium", events }).engine;
  const webkit = nativeFixture({ events }).engine;
  const result = await observeNativeProbe({ chromium, webkit }, nativeOwner, nativeOptions);
  assert.equal(result.valid, true);
  assert.deepEqual(result.engines.map(engine => engine.name), ["chromium", "webkit"]);
  assert.ok(events.indexOf("chromium:online") < events.indexOf("webkit:launch"));
  assert.ok(events.indexOf("webkit:server_close") < events.indexOf("chromium:context_close"));
});

for (const failedEngine of ["chromium", "webkit"]) test(`${failedEngine}启动失败仍落盘两个引擎，不虚报通过`, async t => {
  const directory = mkdtempSync(path.join(os.tmpdir(), "hyb-native-probe-test-"));
  t.after(() => rmSync(directory, { recursive: true, force: true }));
  const engines = Object.fromEntries(["chromium", "webkit"].map(name => [name, nativeFixture({ name, faults: name === failedEngine ? { launch: new Error("synthetic launch failure") } : {} }).engine]));
  let rechecked = false;
  const result = await recordNativeProbe(engines, { ...nativeOwner, environmentDir: directory }, { ...nativeOptions, verify() { rechecked = true; } });
  assert.equal(rechecked, true);
  assert.equal(result.valid, false);
  assert.deepEqual(result.engines.map(engine => [engine.name, engine.valid]), ["chromium", "webkit"].map(name => [name, name !== failedEngine]));
  assert.deepEqual(JSON.parse(readFileSync(path.join(directory, "native-online.json"))), result);
});

test("双引擎成功后环境重验失败仍落盘拒绝", async () => {
  let persisted;
  const result = await recordNativeProbe({ chromium: nativeFixture().engine, webkit: nativeFixture().engine }, nativeOwner, {
    ...nativeOptions, verify() { throw new Error("environment_private_detail"); }, write(file, value) { persisted = value; },
  });
  assert.equal(result.valid, false);
  assert.equal(result.engines.every(engine => engine.valid), true);
  assert.equal(persisted.environmentFailure.stage, "environment_recheck");
  assert.equal(persisted.errorKind, "environment_recheck_failed");
  assert.doesNotMatch(JSON.stringify(persisted), /private_detail/);
});