/**
 * 回归：设备开关关闭后不得再尝试连接蓝牙
 *
 * 现场日志（复现源）：
 *   [Storage] 禁用设备: BT_ECB0D1002F84
 *   [BLE] 连接超时: EC:B0:D1:00:2F:84
 *   [BLE] 连续 3 次建链失败，复位适配器        ← 替一个已经关掉的设备复位整个蓝牙栈
 *   [GW] 启动失败: Error: 连接失败: 连接超时。   ← 还把失败上屏 + 排 5s 自动重试
 *
 * 红线（本套用例锁死）：
 *   1. 设备开关关闭后，蓝牙**不再发起任何建链尝试**（不建链、不排自动重试、不复位适配器）
 *   2. 关闭动作必须**立即生效**，不能等队列里在途的 _boot（最坏一次建链超时 + 适配器复位）
 *   3. MQTT 是应用级连接，**不受设备开关影响**（防止有人把 MQTT 也绑进设备开关）
 *
 * 跑法：node tests/gateway-disabled-device.test.js
 */
const {
  loadRuntime, seedScene, sleep,
} = require('./helpers/fake-wx.js');

/* ============================ 迷你断言器 ============================ */

let passed = 0;
let failed = 0;

/** 安全的展示值（_reconnectTimer 是 Timeout 对象，直接 JSON.stringify 会因循环引用抛错） */
function safe(v) {
  if (v === undefined) return 'undefined';
  if (v === null || typeof v !== 'object') return JSON.stringify(v);
  try {
    return JSON.stringify(v);
  } catch (e) {
    return String(v);
  }
}

function ok(cond, label, extra) {
  if (cond) {
    passed++;
    process.stdout.write(`  ✓ ${label}\n`);
  } else {
    failed++;
    process.stdout.write(`  ✗ ${label}${extra !== undefined ? `  ← ${safe(extra)}` : ''}\n`);
  }
}

function eq(actual, expected, label) {
  ok(actual === expected, `${label} (期望 ${safe(expected)}，实际 ${safe(actual)})`);
}

/* ============================ 用例 ============================ */

const DEV = { serialNumber: 'BT_ECB0D1002F84', deviceId: 'EC:B0:D1:00:2F:84' };

/** 关掉 console 噪音，只留我们自己写的结果 */
function muteConsole() {
  const raw = { log: console.log, warn: console.warn, error: console.error };
  console.log = () => {};
  console.warn = () => {};
  console.error = () => {};
  return () => Object.assign(console, raw);
}

/**
 * 用例 1：无启用设备时，不碰蓝牙；MQTT 照旧（应用级）
 */
async function case1_noEnabledDevice() {
  process.stdout.write('\n[1] 无启用设备 → 不碰蓝牙，MQTT 仍按应用级自动补连\n');
  const restore = muteConsole();
  const rt = loadRuntime();
  seedScene(rt, { ...DEV, enabled: false });
  rt.bleService.setConfig({ connectTimeout: 150, opTimeout: 150, adapterOpTimeout: 120, closeWaitTimeout: 60 });

  await rt.gateway.ensureStarted();
  await rt.gateway.resume();
  await sleep(120);
  restore();

  eq(rt.state.calls.create.length, 0, '没有发起任何建链');
  eq(rt.state.calls.openAdapter, 0, '没有打开蓝牙适配器');
  eq(rt.gateway.getSnapshot().phase, 'stopped', '相位收敛到 stopped');
  ok(rt.mqtt._rec.connectCalls.length > 0, 'MQTT 仍被自动补连（应用级，不受设备开关影响）', rt.mqtt._rec.connectCalls);
}

/**
 * 用例 2：运行中关闭设备开关（等价首页 index.handleDeviceSwitch 关闭分支）
 *        → 立即中止在途建链，不复位适配器，不上屏错误，不排自动重试
 */
async function case2_disableWhileConnecting() {
  process.stdout.write('\n[2] 采集中关闭设备 → 立即中止在途建链 / 不复位适配器 / 不上屏 / 不重试\n');
  const restore = muteConsole();
  const rt = loadRuntime({ createMode: 'hang' });   // 建链永不回调：模拟"连接超时"现场
  seedScene(rt, DEV);
  rt.bleService.setConfig({ connectTimeout: 150, opTimeout: 150, adapterOpTimeout: 120, closeWaitTimeout: 60 });
  // 已经连续失败 2 次：再来 1 次就够 3 次阈值 → 差一点就要"复位适配器"。
  // 这正是现场日志里那一步；关闭设备后它必须被跳过
  rt.bleService._consecutiveCreateFails = 2;

  const boot = rt.gateway.ensureStarted();          // 首页 onShow / 启用设备后的启动
  await sleep(40);
  eq(rt.state.calls.create.length, 1, '建链已在途（1 次）');

  // 记录整条状态轨迹：关闭设备后**任何时刻**都不该出现"异常/启动失败"，
  // 这样断言与"收尾拆除"的先后无关（看单次快照会被 teardown 清干净而假绿）
  const trace = [];
  const unsub = rt.gateway.subscribe((s) => trace.push({ phase: s.phase, lastError: s.lastError }));

  // === 用户按下设备开关的关闭 ==（index.handleDeviceSwitch）
  rt.storage.deactivateDevice(DEV.serialNumber);
  const stop = rt.gateway.ensureStarted();

  await Promise.allSettled([boot, stop]);
  await sleep(120);
  const snap = rt.gateway.getSnapshot();
  const createAfter = rt.state.calls.create.length;
  const closeConnAfter = rt.state.calls.closeConn.length;
  const adapterResets = rt.state.calls.closeAdapter;
  // 观察窗口：远超建链超时，任何新的自动重连/失败重试都会冒头
  await sleep(500);
  const createSettled = rt.state.calls.create.length;
  unsub();
  restore();

  ok(closeConnAfter >= 1, '关闭时立即拆链（closeBLEConnection 已调用）', closeConnAfter);
  eq(adapterResets, 0, '不复位蓝牙适配器（作废流程不得升级为全局复位）');
  eq(createSettled, createAfter, '关闭后窗口内没有新增建链尝试');
  ok(!trace.some((t) => t.phase === 'error'), '状态轨迹里从未出现 error 相位', trace);
  ok(trace.every((t) => t.lastError === null), '状态轨迹里从未上屏"启动失败"', trace);
  eq(snap.lastError, null, '终态无残留错误');
  eq(rt.gateway._initRetryTimer, null, '没有排下"启动失败自动重试"');
  eq(rt.gateway._device, null, '网关已无采集目标');
  eq(snap.phase, 'stopped', '相位收敛到 stopped');
}

/**
 * 用例 3：bleService 隔离 —— 作废的流程抛 cancelled，且不升级为"复位适配器"
 */
async function case3_obsoleteFlowNoEscalate() {
  process.stdout.write('\n[3] bleService：作废流程抛 cancelled，不复位适配器\n');
  const restore = muteConsole();
  const rt = loadRuntime({ createMode: 'hang' });
  rt.bleService.setConfig({ connectTimeout: 120, opTimeout: 120, adapterOpTimeout: 100, closeWaitTimeout: 50 });
  await rt.bleService.initBluetooth();
  const opensAfterInit = rt.state.calls.openAdapter;
  rt.bleService._consecutiveCreateFails = 2;

  const p = rt.bleService.connectDevice(DEV.deviceId);
  await sleep(30);
  await rt.bleService.disconnect();                 // 用户关闭设备 → 作废在途流程
  const err = await p.then(() => null, (e) => e);
  await sleep(160);
  restore();

  ok(err && err.cancelled === true, '在途流程以 cancelled 结算（上层按"不算失败"处理）', err && err.message);
  eq(rt.state.calls.closeAdapter, 0, '没有复位适配器');
  eq(rt.state.calls.openAdapter, opensAfterInit, '没有重新打开适配器');
  eq(rt.bleService.getState(), 'disconnected', '状态为 disconnected');
}

/**
 * 用例 4：resetAdapter 必须"复原"手动断开意图，而不是无条件清零
 */
async function case4_resetAdapterKeepsIntent() {
  process.stdout.write('\n[4] resetAdapter 复原 _manuallyDisconnected（不得抹掉用户意图）\n');
  const restore = muteConsole();
  const rt = loadRuntime();
  rt.bleService.setConfig({ adapterOpTimeout: 100 });

  rt.bleService._manuallyDisconnected = true;       // 场景：设备已被关闭
  await rt.bleService.resetAdapter();
  eq(rt.bleService._manuallyDisconnected, true, '复位后仍保持"已停用/主动断开"意图');

  rt.bleService._manuallyDisconnected = false;      // 场景：正常自愈重连中复位
  await rt.bleService.resetAdapter();
  eq(rt.bleService._manuallyDisconnected, false, '正常复位后不残留 true（否则进入死态）');
  restore();
}

/**
 * 用例 5：主动断开后，自动重连不得把链路拉回来
 */
async function case5_noReconnectAfterDisconnect() {
  process.stdout.write('\n[5] 断开后不排自动重连（入口 + 定时器触发双重把关）\n');
  const restore = muteConsole();
  const rt = loadRuntime();
  rt.bleService.setConfig({ connectTimeout: 120, opTimeout: 120 });

  await rt.bleService.initBluetooth();
  await rt.bleService.disconnect();
  rt.bleService._scheduleReconnect();
  eq(rt.bleService._reconnectTimer, null, '主动断开后 _scheduleReconnect 不排定时器');

  // 反过来：允许重连时排下的定时器，在触发前用户关了设备 → 到点也不得重连
  rt.bleService._lastDeviceId = DEV.deviceId;
  rt.bleService._manuallyDisconnected = false;
  rt.bleService._reconnectAttempts = 0;
  rt.bleService._scheduleReconnect();               // 1s 后触发
  await rt.bleService.disconnect();                 // 触发前关闭设备
  const before = rt.state.calls.create.length;
  await sleep(1300);
  const after = rt.state.calls.create.length;
  restore();

  eq(after, before, '定时器到点后没有重连');
}

/**
 * 用例 6：重新开启设备后一切照旧（防止"关掉就再也连不上"的修过头）
 */
async function case6_reenableWorks() {
  process.stdout.write('\n[6] 重新开启设备 → 正常建链并进入采集中\n');
  const restore = muteConsole();
  const rt = loadRuntime({ createMode: 'ok' });
  seedScene(rt, DEV);
  rt.bleService.setConfig({ connectTimeout: 500, opTimeout: 500, adapterOpTimeout: 300, closeWaitTimeout: 100 });

  const boot = rt.gateway.ensureStarted();
  await sleep(60);
  eq(rt.state.calls.create.length, 1, '建链 1 次');
  rt.storage.deactivateDevice(DEV.serialNumber);
  await rt.gateway.ensureStarted();
  await boot.catch(() => {});
  await sleep(80);
  eq(rt.gateway.getSnapshot().phase, 'stopped', '关闭后停止');

  rt.storage.activateDevice(DEV.serialNumber);
  await rt.gateway.ensureStarted();
  await sleep(150);
  const snap = rt.gateway.getSnapshot();
  restore();

  ok(rt.state.calls.create.length >= 2, '重新开启后再次建链', rt.state.calls.create.length);
  eq(snap.bleConnected, true, 'BLE 已就绪');
  eq(snap.phase, 'running', '相位 running（采集中）');
  eq(snap.lastError, null, '无残留错误');
}

/**
 * 用例 7：gateway.start(已停用的设备) 既不建链，也不连累当前正在跑的采集
 */
async function case7_startDisabledDeviceIsIgnored() {
  process.stdout.write('\n[7] start(已停用设备) → 不建链且不打断当前采集\n');
  const restore = muteConsole();
  const rt = loadRuntime({ createMode: 'ok' });
  seedScene(rt, DEV);
  rt.bleService.setConfig({ connectTimeout: 500, opTimeout: 500, adapterOpTimeout: 300, closeWaitTimeout: 100 });

  await rt.gateway.ensureStarted();
  await sleep(150);
  eq(rt.gateway.getSnapshot().phase, 'running', '设备 A 采集中');

  const closeConnBefore = rt.state.calls.closeConn.length;
  await rt.gateway.start({
    serialNumber: 'BT_OTHER_DEVICE',
    deviceId: 'AA:BB:CC:DD:EE:FF',
    enabled: false,
  });
  await sleep(80);
  const snap = rt.gateway.getSnapshot();
  restore();

  ok(!rt.state.calls.create.includes('AA:BB:CC:DD:EE:FF'), '没有替已停用设备建链', rt.state.calls.create);
  eq(rt.state.calls.closeConn.length, closeConnBefore, '没有拆掉当前设备的链路');
  eq(snap.phase, 'running', '当前采集不受影响');
  eq(snap.device && snap.device.serialNumber, DEV.serialNumber, '目标仍是设备 A');
}

/**
 * 用例 8：直接切换设备（A 开 → 开 B，A 自动失活）不得被同步中止逻辑弄坏
 *        单 enabled 不变量下开 B 等于关 A，_syncTarget 会立即拆 A 的链
 */
async function case8_switchDeviceStillWorks() {
  process.stdout.write('\n[8] 切换到另一台设备（原设备自动失活）仍能正常接管\n');
  const restore = muteConsole();
  const rt = loadRuntime({ createMode: 'ok' });
  seedScene(rt, DEV);
  rt.bleService.setConfig({ connectTimeout: 500, opTimeout: 500, adapterOpTimeout: 300, closeWaitTimeout: 100 });

  await rt.gateway.ensureStarted();
  await sleep(120);
  eq(rt.gateway.getSnapshot().phase, 'running', '设备 A 采集中');

  const B = { serialNumber: 'BT_AAAABBBBCCCC', deviceId: 'AA:AA:BB:BB:CC:CC', name: 'B' };
  rt.storage.addDevice({ ...B, bleName: B.serialNumber, enabled: false, createTime: Date.now() });
  rt.storage.activateDevice(B.serialNumber);           // 开 B = 关 A
  await rt.gateway.ensureStarted();
  await sleep(200);
  const snap = rt.gateway.getSnapshot();
  const adapterResets = rt.state.calls.closeAdapter;
  const creates = rt.state.calls.create.slice();
  restore();

  eq(rt.storage.getEnabledDevice().serialNumber, B.serialNumber, 'B 成为唯一启用设备');
  eq(rt.storage.getDevice(DEV.serialNumber).enabled, false, 'A 已失活');
  ok(creates.includes(B.deviceId), '已为 B 建链', creates);
  eq(snap.device && snap.device.serialNumber, B.serialNumber, '网关目标切到 B');
  eq(snap.bleConnected, true, 'B 的 BLE 已就绪');
  eq(snap.phase, 'running', '采集中');
  eq(adapterResets, 0, '切换设备不需要复位适配器');
  eq(snap.lastError, null, '切换过程无错误上屏');
}

/* ============================ 主流程 ============================ */

async function main() {
  const cases = [
    case1_noEnabledDevice,
    case2_disableWhileConnecting,
    case3_obsoleteFlowNoEscalate,
    case4_resetAdapterKeepsIntent,
    case5_noReconnectAfterDisconnect,
    case6_reenableWorks,
    case7_startDisabledDeviceIsIgnored,
    case8_switchDeviceStillWorks,
  ];
  for (const c of cases) {
    try {
      await c();
    } catch (e) {
      failed++;
      process.stdout.write(`  ✗ 用例抛异常: ${e && e.stack}\n`);
    }
  }

  process.stdout.write(`\n===== 设备开关关闭后不再连蓝牙：通过 ${passed} / 失败 ${failed} =====\n`);
  process.exit(failed ? 1 : 0);
}

main();