import {spawn, spawnSync} from 'node:child_process';
import {randomBytes} from 'node:crypto';
import {
  createWriteStream,
  existsSync,
  readdirSync,
  readFileSync,
  statSync,
  watch,
  writeFileSync,
} from 'node:fs';
import {basename, relative, resolve} from 'node:path';
import {createInterface} from 'node:readline';
import {fileURLToPath} from 'node:url';

import {
  formatPortDecision,
  normalizePort,
  resolveDevStackPorts,
} from './dev-stack-port-utils.mjs';
import {
  ensureParentDir,
  mergeApiServerEnv,
  resolveApiServerLogFile,
  resolveClientHost,
} from './dev-utils.mjs';

const repoRoot = process.cwd();
const serverRsDir = resolve(repoRoot, 'server-rs');
const manifestPath = resolve(serverRsDir, 'Cargo.toml');
const modulePath = resolve(serverRsDir, 'crates/spacetime-module');
const viteCliPath = resolve(repoRoot, 'scripts/vite-cli.mjs');
const adminWebDir = resolve(repoRoot, 'apps/admin-web');

const SERVICE_NAMES = ['spacetime', 'api-server', 'web', 'admin-web'];
const SERVICE_ALIASES = new Map([
  ['api', 'api-server'],
  ['admin', 'admin-web'],
  ['adminWeb', 'admin-web'],
  ['all', 'all'],
]);

function usage() {
  console.log(`用法:
  npm run dev [-- --watch] [-- --api-port 8090]
  npm run dev:spacetime [-- --skip-publish]
  npm run dev:api-server [-- --database genarrative-dev]
  npm run dev:web [-- --api-port 8082]
  npm run dev:admin-web [-- --api-port 8082]

常用参数:
  --api-host <host>                 api-server 监听地址
  --api-port <port>                 api-server 端口
  --web-host <host>                 主站 Vite 监听地址
  --web-port <port>                 主站 Vite 端口
  --admin-web-host <host>           后台 Vite 监听地址
  --admin-web-port <port>           后台 Vite 端口
  --spacetime-host <host>           SpacetimeDB 监听地址
  --spacetime-port <port>           SpacetimeDB 端口
  --spacetime-data-dir <path>       SpacetimeDB 本地数据目录
  --database <name>                 SpacetimeDB 数据库名
  --watch                           文件改动后刷新/重启对应模块
  --no-interactive                  关闭交互式手动命令

交互命令:
  rs spacetime       重新发布 spacetime-module，不重启 standalone
  rs api-server      重启 api-server
  rs web             重启主站 Vite
  rs admin-web       重启后台 Vite
  rs all             重新发布 spacetime-module，并重启其余模块
  help
  quit
`);
}

function readLocalSpacetimeDatabase() {
  const configPath = resolve(repoRoot, 'spacetime.local.json');
  if (!existsSync(configPath)) {
    return '';
  }

  try {
    const value = JSON.parse(readFileSync(configPath, 'utf8')).database;
    return typeof value === 'string' ? value.trim() : '';
  } catch (error) {
    console.warn(`[dev] 忽略无效 spacetime.local.json: ${error.message}`);
    return '';
  }
}

function parseArgs(argv, baseEnv) {
  const args = [...argv];
  let command = 'all';
  const explicitOptions = new Set();

  if (args[0] && !args[0].startsWith('-')) {
    command = normalizeServiceName(args.shift());
  }

  const env = baseEnv ?? process.env;
  const options = {
    apiHost: env.GENARRATIVE_API_HOST || '127.0.0.1',
    apiPort: normalizePort(env.GENARRATIVE_API_PORT, 8082),
    webHost: env.WEB_HOST || '0.0.0.0',
    webPort: normalizePort(env.WEB_PORT, 3000),
    adminWebHost: env.ADMIN_WEB_HOST || '127.0.0.1',
    adminWebPort: normalizePort(env.ADMIN_WEB_PORT, 3102),
    spacetimeHost: env.SPACETIME_HOST || '127.0.0.1',
    spacetimePort: normalizePort(env.SPACETIME_PORT, 3101),
    spacetimeDataDir: resolve(serverRsDir, '.spacetimedb/local/data'),
    spacetimeServerUrl: String(env.GENARRATIVE_SPACETIME_SERVER_URL ?? '').trim(),
    database:
      readLocalSpacetimeDatabase() ||
      String(env.GENARRATIVE_SPACETIME_DATABASE ?? '').trim() ||
      'genarrative-dev',
    apiLog: 'info,tower_http=info',
    spacetimeTimeoutSeconds: 60,
    apiTimeoutSeconds: 600,
    skipSpacetime: false,
    skipPublish: false,
    preserveDatabase: false,
    migrationBootstrapSecret: '',
    migrationBootstrapSecretMode: 'auto',
    watch: false,
    interactive: true,
  };

  for (let index = 0; index < args.length; index += 1) {
    const arg = args[index];
    const readValue = () => {
      const value = args[index + 1];
      if (!value || value.startsWith('--')) {
        throw new Error(`缺少 ${arg} 的值`);
      }
      index += 1;
      return value;
    };

    switch (arg) {
      case '-h':
      case '--help':
        usage();
        process.exit(0);
        break;
      case '--api-host':
        options.apiHost = readValue();
        explicitOptions.add('apiHost');
        break;
      case '--api-port':
        options.apiPort = normalizePort(readValue(), options.apiPort);
        explicitOptions.add('apiPort');
        break;
      case '--web-host':
        options.webHost = readValue();
        explicitOptions.add('webHost');
        break;
      case '--web-port':
        options.webPort = normalizePort(readValue(), options.webPort);
        explicitOptions.add('webPort');
        break;
      case '--admin-web-host':
        options.adminWebHost = readValue();
        explicitOptions.add('adminWebHost');
        break;
      case '--admin-web-port':
        options.adminWebPort = normalizePort(readValue(), options.adminWebPort);
        explicitOptions.add('adminWebPort');
        break;
      case '--spacetime-host':
        options.spacetimeHost = readValue();
        options.spacetimeServerUrl = '';
        explicitOptions.add('spacetimeHost');
        break;
      case '--spacetime-port':
        options.spacetimePort = normalizePort(readValue(), options.spacetimePort);
        options.spacetimeServerUrl = '';
        explicitOptions.add('spacetimePort');
        break;
      case '--spacetime-data-dir':
        options.spacetimeDataDir = resolve(repoRoot, readValue());
        explicitOptions.add('spacetimeDataDir');
        break;
      case '--database':
        options.database = readValue();
        explicitOptions.add('database');
        break;
      case '--log':
        options.apiLog = readValue();
        break;
      case '--spacetime-timeout-seconds':
        options.spacetimeTimeoutSeconds = Number(readValue());
        break;
      case '--api-timeout-seconds':
        options.apiTimeoutSeconds = Number(readValue());
        break;
      case '--skip-spacetime':
        options.skipSpacetime = true;
        break;
      case '--skip-publish':
        options.skipPublish = true;
        break;
      case '--clear-database':
        options.preserveDatabase = false;
        break;
      case '--preserve-database':
        options.preserveDatabase = true;
        break;
      case '--migration-bootstrap-secret':
        options.migrationBootstrapSecret = readValue();
        options.migrationBootstrapSecretMode = 'manual';
        break;
      case '--no-migration-bootstrap-secret':
        options.migrationBootstrapSecret = '';
        options.migrationBootstrapSecretMode = 'disabled';
        break;
      case '--watch':
        options.watch = true;
        break;
      case '--no-interactive':
        options.interactive = false;
        break;
      default:
        throw new Error(`未知参数: ${arg}`);
    }
  }

  if (!Number.isFinite(options.spacetimeTimeoutSeconds)) {
    throw new Error('--spacetime-timeout-seconds 必须是数字');
  }

  if (!Number.isFinite(options.apiTimeoutSeconds)) {
    throw new Error('--api-timeout-seconds 必须是数字');
  }

  return {command, explicitOptions, options};
}

function normalizeServiceName(rawName) {
  const alias = SERVICE_ALIASES.get(rawName);
  const name = alias ?? rawName;
  if (name === 'all' || SERVICE_NAMES.includes(name)) {
    return name;
  }

  throw new Error(`未知模块: ${rawName}`);
}

function requireCommand(command) {
  const result = spawnSync(command, ['--version'], {
    cwd: repoRoot,
    encoding: 'utf8',
    shell: process.platform === 'win32',
  });

  if (result.error) {
    throw new Error(`缺少命令: ${command}`);
  }
}

function ensureRequiredFiles(command) {
  const requiredFiles = [];

  if (command === 'api-server' || command === 'spacetime' || command === 'all') {
    requiredFiles.push([manifestPath, 'server-rs/Cargo.toml']);
  }

  if (command === 'spacetime' || command === 'all') {
    requiredFiles.push([resolve(modulePath, 'Cargo.toml'), 'spacetime-module Cargo.toml']);
  }

  if (command === 'web' || command === 'admin-web' || command === 'all') {
    requiredFiles.push([viteCliPath, 'scripts/vite-cli.mjs']);
  }

  if (command === 'admin-web' || command === 'all') {
    requiredFiles.push([resolve(adminWebDir, 'package.json'), 'apps/admin-web/package.json']);
  }

  for (const [path, label] of requiredFiles) {
    if (!existsSync(path)) {
      throw new Error(`未找到 ${label}: ${path}`);
    }
  }
}

class DevService {
  constructor(name, startFn) {
    this.name = name;
    this.startFn = startFn;
    this.child = null;
    this.children = [];
    this.logStream = null;
    this.stopping = false;
    this.restartTimer = null;
  }

  async start() {
    if (this.child) {
      return;
    }

    await this.startFn(this);
  }

  registerChild(child) {
    this.child = child;
    child.on('exit', (code, signal) => {
      if (this.logStream && !this.logStream.destroyed) {
        this.logStream.end();
      }

      this.child = null;
      if (this.stopping) {
        this.stopping = false;
        return;
      }

      const reason = signal ? `signal=${signal}` : `code=${code ?? 0}`;
      console.error(`[dev:${this.name}] 子进程退出: ${reason}`);
    });
  }

  async stop() {
    if (this.restartTimer) {
      clearTimeout(this.restartTimer);
      this.restartTimer = null;
    }

    const processes = [this.child, ...this.children].filter(Boolean);
    this.stopping = processes.length > 0;
    this.child = null;
    this.children = [];

    for (const child of processes.reverse()) {
      await stopProcess(child, this.name);
    }

    if (this.logStream && !this.logStream.destroyed) {
      await new Promise((resolveEnd) => this.logStream.end(resolveEnd));
    }
    this.logStream = null;
    this.stopping = false;
  }

  scheduleRestart(delayMs = 250, restartFn = null, actionLabel = '重启') {
    if (this.restartTimer) {
      clearTimeout(this.restartTimer);
    }

    this.restartTimer = setTimeout(async () => {
      this.restartTimer = null;
      try {
        if (restartFn) {
          await restartFn();
          return;
        }

        await this.restart();
      } catch (error) {
        console.error(`[dev:${this.name}] ${actionLabel}失败: ${error.message}`);
      }
    }, delayMs);
  }

  async restart() {
    console.log(`[dev] 重启 ${this.name}`);
    await this.stop();
    await this.start();
  }
}

async function stopProcess(child, label) {
  if (!child || child.exitCode != null || child.signalCode != null) {
    return;
  }

  await new Promise((resolveStop) => {
    const timer = setTimeout(() => {
      try {
        child.kill('SIGKILL');
      } catch {
        // ignore cleanup races
      }
      resolveStop();
    }, 5000);

    child.once('exit', () => {
      clearTimeout(timer);
      resolveStop();
    });

    try {
      if (process.platform === 'win32') {
        stopWindowsProcessTree(child.pid);
      } else {
        child.kill('SIGTERM');
      }
    } catch (error) {
      clearTimeout(timer);
      console.warn(`[dev:${label}] 停止进程失败: ${error.message}`);
      resolveStop();
    }
  });
}

function stopWindowsProcessTree(pid) {
  if (!pid) {
    return;
  }

  spawnSync('powershell.exe', [
    '-NoProfile',
    '-ExecutionPolicy',
    'Bypass',
    '-Command',
    [
      '$ErrorActionPreference = "SilentlyContinue"',
      '$root = [int]$env:GENARRATIVE_STOP_PID',
      '$all = Get-CimInstance Win32_Process',
      '$childrenByParent = @{}',
      'foreach ($process in $all) {',
      '  $parent = [int]$process.ParentProcessId',
      '  if (-not $childrenByParent.ContainsKey($parent)) { $childrenByParent[$parent] = @() }',
      '  $childrenByParent[$parent] += [int]$process.ProcessId',
      '}',
      '$toStop = New-Object System.Collections.Generic.List[int]',
      '$queue = New-Object System.Collections.Generic.Queue[int]',
      '$queue.Enqueue($root)',
      'while ($queue.Count -gt 0) {',
      '  $current = $queue.Dequeue()',
      '  $toStop.Add($current)',
      '  if ($childrenByParent.ContainsKey($current)) {',
      '    foreach ($child in $childrenByParent[$current]) { $queue.Enqueue($child) }',
      '  }',
      '}',
      'foreach ($id in ($toStop | Select-Object -Unique | Sort-Object -Descending)) {',
      '  Stop-Process -Id $id -Force -ErrorAction SilentlyContinue',
      '}',
    ].join('\n'),
  ], {
    env: {
      ...process.env,
      GENARRATIVE_STOP_PID: String(pid),
    },
    stdio: 'ignore',
  });
}

class DevRunner {
  constructor(options, baseEnv = process.env, explicitOptions = new Set()) {
    this.options = options;
    this.baseEnv = {...baseEnv};
    this.explicitOptions = explicitOptions;
    const initialSpacetimeServer =
      options.spacetimeServerUrl ||
      `http://${options.spacetimeHost}:${options.spacetimePort}`;
    this.state = {
      apiTargetHost: resolveClientHost(options.apiHost),
      adminWebTargetHost: resolveClientHost(options.adminWebHost),
      spacetimeServer: initialSpacetimeServer,
      apiTarget: `http://${resolveClientHost(options.apiHost)}:${options.apiPort}`,
    };
    this.services = new Map();
    this.watchers = [];
    this.shuttingDown = false;
  }

  async init(command) {
    this.command = command;
    ensureRequiredFiles(command);
    requireCommand('node');
    if (command === 'api-server' || command === 'all') {
      requireCommand('cargo');
    }
    if (
      command === 'spacetime' ||
      (command === 'all' && (!this.options.skipSpacetime || !this.options.skipPublish))
    ) {
      requireCommand('spacetime');
    }

    await this.tryReuseExistingSpacetime(command);
    await this.resolvePorts(command);
    this.registerServices();
    this.printSummary(command);
  }

  async tryReuseExistingSpacetime(command) {
    if (this.options.skipSpacetime) {
      return;
    }

    if (
      this.options.spacetimeServerUrl &&
      command !== 'all' &&
      command !== 'spacetime'
    ) {
      return;
    }

    const pidState = readRecordedSpacetimePidState(this.options.spacetimeDataDir);
    const recordedUrl = readRecordedSpacetimeUrl(this.options.spacetimeDataDir);
    if (pidState.state === 'missing') {
      if (recordedUrl) {
        console.log(`[dev:spacetime] 记录的 URL 缺少 spacetime.pid，跳过复用: ${recordedUrl}`);
      }
      return;
    }

    if (pidState.state === 'invalid' || pidState.state === 'dead' || pidState.state === 'unknown') {
      console.log('[dev:spacetime] 检测到 spacetime.pid 但状态无效，跳过复用');
      return;
    }

    const candidates = uniqueNonEmpty([
      recordedUrl,
      this.options.spacetimeServerUrl,
      this.state.spacetimeServer,
      `http://${this.options.spacetimeHost}:${this.options.spacetimePort}`,
    ]);

    for (const candidate of candidates) {
      const pingUrl = buildUrl(candidate, '/v1/ping');
      if (!pingUrl || !(await isHttpReady(pingUrl))) {
        continue;
      }

      const port = safeUrlPort(candidate);
      if (Number.isInteger(port) && port > 0) {
        this.options.spacetimePort = port;
      }
      this.state.spacetimeServer = candidate;
      this.state.spacetimeReused = true;
      const pidLabel = Number.isInteger(pidState.pid) ? ` pid=${pidState.pid}` : '';
      console.log(`[dev:spacetime] 复用已启动实例${pidLabel}: ${candidate}`);
      return;
    }

    const pidLabel = Number.isInteger(pidState.pid) ? ` pid=${pidState.pid}` : '';
    throw new Error(
      `检测到 spacetime.pid${pidLabel}，但无法连接候选地址: ${candidates.join(', ')}`,
    );
  }

  async resolvePorts(command) {
    const {options} = this;
    const portConfig = {};

    if (command === 'all' || command === 'spacetime') {
      if (!options.skipSpacetime && !this.state.spacetimeReused) {
        portConfig.spacetime = {
          host: options.spacetimeHost,
          preferredPort: options.spacetimePort,
        };
      }
    }

    if (command === 'all' || command === 'api-server') {
      portConfig.api = {
        host: options.apiHost,
        preferredPort: options.apiPort,
      };
    }

    if (command === 'all' || command === 'web') {
      portConfig.web = {
        host: options.webHost,
        preferredPort: options.webPort,
      };
    }

    if (command === 'all' || command === 'admin-web') {
      portConfig.adminWeb = {
        host: options.adminWebHost,
        preferredPort: options.adminWebPort,
      };
    }

    if (Object.keys(portConfig).length === 0) {
      return;
    }

    const resolvedPorts = await resolveDevStackPorts(portConfig);

    for (const [name, resolvedPort] of Object.entries(resolvedPorts)) {
      const config = portConfig[name];
      console.error(
        formatPortDecision({
          name,
          host: config.host,
          preferredPort: config.preferredPort,
          resolvedPort,
        }),
      );
    }

    if (resolvedPorts.spacetime) {
      options.spacetimePort = resolvedPorts.spacetime;
    }
    if (resolvedPorts.api) {
      options.apiPort = resolvedPorts.api;
    }
    if (resolvedPorts.web) {
      options.webPort = resolvedPorts.web;
    }
    if (resolvedPorts.adminWeb) {
      options.adminWebPort = resolvedPorts.adminWeb;
    }

    this.state.apiTargetHost = resolveClientHost(options.apiHost);
    this.state.adminWebTargetHost = resolveClientHost(options.adminWebHost);
    if (command === 'all' || command === 'spacetime') {
      this.state.spacetimeServer = `http://${options.spacetimeHost}:${options.spacetimePort}`;
    }
    this.state.apiTarget = `http://${this.state.apiTargetHost}:${options.apiPort}`;
  }

  registerServices() {
    this.services.set(
      'spacetime',
      new DevService('spacetime', async (service) => this.startSpacetime(service)),
    );
    this.services.set(
      'api-server',
      new DevService('api-server', async (service) => this.startApiServer(service)),
    );
    this.services.set('web', new DevService('web', async (service) => this.startWeb(service)));
    this.services.set(
      'admin-web',
      new DevService('admin-web', async (service) => this.startAdminWeb(service)),
    );
  }

  printSummary(command) {
    const {options, state} = this;
    console.log(`[dev] repo: ${repoRoot}`);
    console.log(`[dev] command: ${command}`);
    console.log(`[dev] watch: ${options.watch ? 'on' : 'off'}`);
    console.log(`[dev] web: http://127.0.0.1:${options.webPort}`);
    console.log(`[dev] admin web: http://${state.adminWebTargetHost}:${options.adminWebPort}/admin/`);
    console.log(`[dev] api-server: ${state.apiTarget}`);
    console.log(`[dev] spacetime: ${state.spacetimeServer}`);
    console.log(`[dev] database: ${options.database}`);
  }

  async startCommand(command) {
    if (command === 'all') {
      await this.startSpacetimeForFullStack();
      await this.services.get('api-server').start();
      await this.waitForApiServer();
      await this.services.get('web').start();
      await this.services.get('admin-web').start();
      this.startInteractiveInput();
      this.startWatchers(['spacetime', 'api-server', 'web', 'admin-web']);
      return;
    }

    if (command === 'spacetime') {
      await this.startSpacetimeForFullStack();
    } else {
      await this.services.get(command).start();
    }

    this.startWatchers([command]);
  }

  async startSpacetimeForFullStack() {
    if (!this.options.skipSpacetime && !this.state.spacetimeReused) {
      await this.services.get('spacetime').start();
      await this.waitForSpacetime();
    }

    if (this.state.spacetimeReused || this.options.skipSpacetime) {
      await this.waitForSpacetime();
    }

    if (!this.options.skipPublish) {
      await this.publishSpacetimeModule();
    }
  }

  async refreshSpacetimeModule() {
    if (this.options.skipPublish) {
      console.log('[dev:spacetime] 已跳过发布，忽略重新发布请求');
      return;
    }

    await this.waitForSpacetime();
    await this.publishSpacetimeModule();
  }

  startSpacetime(service) {
    const {options} = this;
    ensureParentDir(resolve(options.spacetimeDataDir, 'logs/.keep'));
    const logFile = resolve(options.spacetimeDataDir, 'logs/dev-spacetime-start.log');
    const logStream = createWriteStream(logFile, {flags: 'a', encoding: 'utf8'});
    service.logStream = logStream;

    console.log(`[dev:spacetime] log: ${logFile}`);
    const env = {
      ...this.baseEnv,
    };
    const child = spawn(
      'spacetime',
      [
        'start',
        '--data-dir',
        options.spacetimeDataDir,
        '--listen-addr',
        `${options.spacetimeHost}:${options.spacetimePort}`,
        '--non-interactive',
      ],
      {
        cwd: serverRsDir,
        env,
        stdio: ['ignore', 'pipe', 'pipe'],
        shell: process.platform === 'win32',
      },
    );

    child.stdout?.on('data', (chunk) => {
      process.stdout.write(chunk);
      logStream.write(chunk);
      const listenAddr = parseListenAddr(String(chunk));
      if (listenAddr) {
        this.updateSpacetimeServerFromListenAddr(listenAddr);
      }
    });
    child.stderr?.on('data', (chunk) => {
      process.stderr.write(chunk);
      logStream.write(chunk);
      const listenAddr = parseListenAddr(String(chunk));
      if (listenAddr) {
        this.updateSpacetimeServerFromListenAddr(listenAddr);
      }
    });
    child.on('error', (error) => {
      console.error(`[dev:spacetime] 启动失败: ${error.message}`);
    });

    service.registerChild(child);
  }

  updateSpacetimeServerFromListenAddr(listenAddr) {
    const port = Number(listenAddr.split(':').at(-1));
    if (!Number.isInteger(port) || port <= 0) {
      return;
    }

    this.options.spacetimePort = port;
    this.state.spacetimeServer = `http://${this.options.spacetimeHost}:${port}`;
    recordSpacetimeUrl(this.options.spacetimeDataDir, this.state.spacetimeServer);
    console.log(`[dev:spacetime] actual: ${this.state.spacetimeServer}`);
  }

  async waitForSpacetime() {
    const deadline = Date.now() + this.options.spacetimeTimeoutSeconds * 1000;
    while (Date.now() < deadline) {
      if (await isHttpReady(new URL('/v1/ping', this.state.spacetimeServer).href)) {
        return;
      }
      await sleep(500);
    }

    throw new Error(`等待 SpacetimeDB 就绪超时: ${this.state.spacetimeServer}`);
  }

  async publishSpacetimeModule() {
    const env = {...this.baseEnv};
    this.prepareMigrationBootstrapSecret(env);

    const args = [
      'publish',
      this.options.database,
      '--server',
      this.state.spacetimeServer,
      '--module-path',
      modulePath,
      '--build-options=--debug',
    ];

    if (!this.options.preserveDatabase) {
      args.push('-c=on-conflict');
    }
    args.push('--yes');

    console.log(`[dev:spacetime] 发布模块: ${this.options.database}`);
    await runForeground('spacetime', args, {
      cwd: serverRsDir,
      env,
      label: 'spacetime',
    });
  }

  prepareMigrationBootstrapSecret(env) {
    switch (this.options.migrationBootstrapSecretMode) {
      case 'auto':
        this.options.migrationBootstrapSecret = randomHex(32);
        break;
      case 'manual':
        if (this.options.migrationBootstrapSecret.length < 16) {
          throw new Error('迁移引导密钥至少需要 16 个字符');
        }
        break;
      case 'disabled':
        delete env.GENARRATIVE_SPACETIME_MIGRATION_BOOTSTRAP_SECRET;
        console.log('[dev:spacetime] 未启用迁移引导密钥');
        return;
      default:
        throw new Error(`未知迁移引导密钥模式: ${this.options.migrationBootstrapSecretMode}`);
    }

    env.GENARRATIVE_SPACETIME_MIGRATION_BOOTSTRAP_SECRET =
      this.options.migrationBootstrapSecret;
    console.log(`[dev:spacetime] 迁移引导密钥: ${this.options.migrationBootstrapSecret}`);
  }

  startApiServer(service) {
    const mergedEnv = {
      ...this.baseEnv,
      GENARRATIVE_API_HOST: this.options.apiHost,
      GENARRATIVE_API_PORT: String(this.options.apiPort),
      GENARRATIVE_API_LOG: this.options.apiLog,
      GENARRATIVE_SPACETIME_SERVER_URL: this.state.spacetimeServer,
      GENARRATIVE_SPACETIME_DATABASE: this.options.database,
      GENARRATIVE_SPACETIME_TOKEN:
        this.baseEnv.GENARRATIVE_SPACETIME_TOKEN || '',
    };

    const logFile = resolveApiServerLogFile(repoRoot, mergedEnv);
    ensureParentDir(logFile);
    const logStream = createWriteStream(logFile, {flags: 'a', encoding: 'utf8'});
    service.logStream = logStream;
    mergedEnv.GENARRATIVE_API_SERVER_LOG_FILE = logFile;

    stopExistingWindowsApiServer(logStream);

    console.log(`[dev:api-server] log: ${logFile}`);
    console.log(
      `[dev:api-server] SpacetimeDB ${this.options.database} @ ${this.state.spacetimeServer}`,
    );

    const child = spawn(
      'cargo',
      ['run', '-p', 'api-server', '--manifest-path', 'server-rs/Cargo.toml'],
      {
        cwd: repoRoot,
        env: mergedEnv,
        stdio: ['ignore', 'pipe', 'pipe'],
        shell: process.platform === 'win32',
      },
    );

    child.stdout?.on('data', (chunk) => {
      process.stdout.write(chunk);
      logStream.write(chunk);
    });
    child.stderr?.on('data', (chunk) => {
      process.stderr.write(chunk);
      logStream.write(chunk);
    });
    child.on('error', (error) => {
      console.error(`[dev:api-server] 启动 cargo 失败: ${error.message}`);
    });

    service.registerChild(child);
  }

  async waitForApiServer() {
    const healthUrl = `${this.state.apiTarget}/healthz`;
    const deadline = Date.now() + this.options.apiTimeoutSeconds * 1000;
    while (Date.now() < deadline) {
      if (await isHttpReady(healthUrl, 500)) {
        return;
      }
      await sleep(500);
    }

    throw new Error(`等待 api-server 就绪超时: ${healthUrl}`);
  }

  startWeb(service) {
    const apiTarget = this.resolveFrontendApiTarget();
    const env = {
      ...this.baseEnv,
      RUST_SERVER_TARGET: apiTarget,
      GENARRATIVE_RUNTIME_SERVER_TARGET: apiTarget,
      ADMIN_WEB_TARGET: `http://${this.state.adminWebTargetHost}:${this.options.adminWebPort}`,
      ADMIN_WEB_PORT: String(this.options.adminWebPort),
      VITE_DEV_HOST: this.options.webHost,
    };

    console.log(`[dev:web] api target: ${apiTarget}`);
    const child = spawn(
      'node',
      [
        viteCliPath,
        `--port=${this.options.webPort}`,
        `--host=${this.options.webHost}`,
        '--strictPort',
      ],
      {
        cwd: repoRoot,
        env,
        ...createDevServerSpawnOptions(),
        shell: process.platform === 'win32',
      },
    );

    pipeChildOutput(child);
    child.on('error', (error) => {
      console.error(`[dev:web] 启动 Vite 失败: ${error.message}`);
    });
    service.registerChild(child);
  }

  startAdminWeb(service) {
    const apiTarget = this.resolveFrontendApiTarget({admin: true});
    const env = {
      ...this.baseEnv,
      ADMIN_API_TARGET: apiTarget,
      GENARRATIVE_API_TARGET: apiTarget,
      GENARRATIVE_API_PORT: String(this.options.apiPort),
    };

    console.log(`[dev:admin-web] api target: ${apiTarget}`);
    const child = spawn(
      'node',
      [
        viteCliPath,
        `--host=${this.options.adminWebHost}`,
        `--port=${this.options.adminWebPort}`,
        '--strictPort',
      ],
      {
        cwd: adminWebDir,
        env,
        ...createDevServerSpawnOptions(),
        shell: process.platform === 'win32',
      },
    );

    pipeChildOutput(child);
    child.on('error', (error) => {
      console.error(`[dev:admin-web] 启动 Vite 失败: ${error.message}`);
    });
    service.registerChild(child);
  }

  resolveFrontendApiTarget({admin = false} = {}) {
    if (
      this.command === 'all' ||
      this.explicitOptions.has('apiHost') ||
      this.explicitOptions.has('apiPort')
    ) {
      return this.state.apiTarget;
    }

    if (admin) {
      const adminTarget = String(this.baseEnv.ADMIN_API_TARGET ?? '').trim();
      if (adminTarget) {
        return adminTarget;
      }
    }

    return (
      String(this.baseEnv.GENARRATIVE_RUNTIME_SERVER_TARGET ?? '').trim() ||
      String(this.baseEnv.RUST_SERVER_TARGET ?? '').trim() ||
      String(this.baseEnv.GENARRATIVE_API_TARGET ?? '').trim() ||
      this.state.apiTarget
    );
  }

  startWatchers(serviceNames) {
    if (!this.options.watch) {
      return;
    }

    const watchConfigs = createWatchConfigs();

    for (const serviceName of serviceNames) {
      const service = this.services.get(serviceName);
      for (const config of watchConfigs[serviceName] ?? []) {
        if (!existsSync(config.path)) {
          continue;
        }

        this.watchers.push(
          createServiceWatcher({
            config,
            service,
            serviceName,
            restartFn:
              serviceName === 'spacetime'
                ? async () => this.refreshSpacetimeModule()
                : async () => this.restartService(serviceName),
            actionLabel: serviceName === 'spacetime' ? '重新发布' : '重启',
          }),
        );
      }
    }
  }

  startInteractiveInput() {
    if (!this.options.interactive || !process.stdin.isTTY) {
      return;
    }

    console.log('[dev] 输入 help 查看交互命令。');
    const rl = createInterface({
      input: process.stdin,
      output: process.stdout,
      terminal: true,
    });

    rl.on('line', async (line) => {
      const raw = line.trim();
      if (!raw) {
        return;
      }

      try {
        if (raw === 'help') {
          console.log(
            '可用命令: rs spacetime(重新发布) | rs api-server | rs web | rs admin-web | rs all | quit',
          );
          return;
        }

        if (raw === 'quit' || raw === 'exit') {
          await this.shutdown(0);
          return;
        }

        const match = raw.match(/^rs\s+(.+)$/u);
        if (!match) {
          console.warn(`[dev] 未知交互命令: ${raw}`);
          return;
        }

        const target = normalizeServiceName(match[1]);
        if (target === 'all') {
          for (const serviceName of SERVICE_NAMES) {
            await this.restartService(serviceName);
          }
          return;
        }

        await this.restartService(target);
      } catch (error) {
        console.error(`[dev] 交互命令失败: ${error.message}`);
      }
    });
  }

  async restartService(serviceName) {
    if (serviceName === 'spacetime') {
      await this.refreshSpacetimeModule();
      return;
    }

    await this.services.get(serviceName).restart();
    if (serviceName === 'api-server') {
      await this.waitForApiServer();
    }
  }

  async shutdown(code = 0) {
    if (this.shuttingDown) {
      return;
    }
    this.shuttingDown = true;

    for (const watcher of this.watchers) {
      watcher.close();
    }
    this.watchers = [];

    for (const serviceName of [...SERVICE_NAMES].reverse()) {
      await this.services.get(serviceName)?.stop();
    }

    process.exit(code);
  }
}

function stopExistingWindowsApiServer(logStream) {
  if (process.platform !== 'win32') {
    return;
  }

  const apiServerExePath = resolve(repoRoot, 'server-rs/target/debug/api-server.exe');
  const command = [
    '$ErrorActionPreference = "Continue"',
    '$target = [System.IO.Path]::GetFullPath($env:GENARRATIVE_API_SERVER_EXE_TARGET)',
    '$processes = Get-Process -Name api-server -ErrorAction SilentlyContinue | Where-Object {',
    '  $_.Path -and ([System.IO.Path]::GetFullPath($_.Path) -ieq $target)',
    '}',
    'foreach ($process in $processes) {',
    '  try {',
    '    Stop-Process -Id $process.Id -Force -ErrorAction Stop',
    '    Wait-Process -Id $process.Id -Timeout 5 -ErrorAction SilentlyContinue',
    '    Write-Output $process.Id',
    '  } catch {',
    '    Write-Error "[dev:api-server] 忽略旧进程清理瞬时失败 pid=$($process.Id): $($_.Exception.Message)"',
    '  }',
    '}',
    'exit 0',
  ].join('\n');

  const result = spawnSync(
    'powershell.exe',
    ['-NoProfile', '-ExecutionPolicy', 'Bypass', '-Command', command],
    {
      encoding: 'utf8',
      env: {
        ...process.env,
        GENARRATIVE_API_SERVER_EXE_TARGET: apiServerExePath,
      },
    },
  );

  if (result.error) {
    throw result.error;
  }

  const output = String(result.stdout ?? '').trim();
  if (output) {
    const line = `[dev:api-server] 已停止旧 api-server 进程: ${output}\n`;
    process.stdout.write(line);
    logStream.write(line);
  }
}

function parseListenAddr(text) {
  const match = text.match(/Starting SpacetimeDB listening on ([^\s]+)/u);
  return match?.[1] ?? '';
}

function createServiceWatcher({config, service, serviceName, restartFn, actionLabel = '重启'}) {
  try {
    const watcher = watch(config.path, {recursive: true}, (_event, fileName) => {
      const filePath = fileName
        ? resolve(config.path, String(fileName))
        : config.path;
      notifyWatchedFile({
        config,
        filePath,
        restartFn,
        service,
        serviceName,
        actionLabel,
      });
    });

    return {
      close: () => watcher.close(),
    };
  } catch (error) {
    console.warn(
      `[dev:watch] ${serviceName} 使用轮询监听 ${relative(repoRoot, config.path)}: ${error.message}`,
    );
    return createPollingWatcher({config, restartFn, service, serviceName, actionLabel});
  }
}

function createPollingWatcher({config, service, serviceName, restartFn, actionLabel = '重启'}) {
  let snapshot = snapshotWatchedFiles(config.path, config.filter);
  const timer = setInterval(() => {
    const nextSnapshot = snapshotWatchedFiles(config.path, config.filter);
    for (const [filePath, mtimeMs] of nextSnapshot.entries()) {
      if (snapshot.get(filePath) !== mtimeMs) {
        notifyWatchedFile({
          config,
          filePath,
          restartFn,
          service,
          serviceName,
          actionLabel,
        });
        break;
      }
    }
    snapshot = nextSnapshot;
  }, 1000);

  return {
    close: () => clearInterval(timer),
  };
}

function notifyWatchedFile({config, filePath, restartFn, service, serviceName, actionLabel}) {
  if (!shouldAcceptWatchEvent(config, filePath)) {
    return;
  }

  console.log(`[dev:watch] ${serviceName}: ${relative(repoRoot, filePath)}`);
  service.scheduleRestart(250, restartFn, actionLabel);
}

function snapshotWatchedFiles(rootPath, filter) {
  const snapshot = new Map();
  if (!existsSync(rootPath)) {
    return snapshot;
  }

  const visit = (filePath) => {
    let stats;
    try {
      stats = statSync(filePath);
    } catch {
      return;
    }

    if (stats.isDirectory()) {
      if (shouldSkipDirectory(filePath)) {
        return;
      }
      for (const entry of readdirSync(filePath)) {
        visit(resolve(filePath, entry));
      }
      return;
    }

    if (stats.isFile() && filter(filePath)) {
      snapshot.set(filePath, stats.mtimeMs);
    }
  };

  visit(rootPath);
  return snapshot;
}

function shouldSkipDirectory(filePath) {
  const name = basename(filePath);
  return (
    name === 'node_modules' ||
    name === '.vite' ||
    name === 'target' ||
    name === 'dist' ||
    name === 'build' ||
    name === '.git' ||
    name === '.spacetimedb'
  );
}

function shouldAcceptWatchEvent(config, filePath) {
  if (hasSkippedPathSegment(filePath)) {
    return false;
  }

  return config.filter(filePath);
}

function hasSkippedPathSegment(filePath) {
  return normalizePath(filePath)
    .split('/')
    .some((segment) =>
      [
        'node_modules',
        '.vite',
        'target',
        'dist',
        'build',
        '.git',
        '.spacetimedb',
      ].includes(segment),
    );
}

function createWatchConfigs() {
  return {
    spacetime: [
      {
        path: resolve(serverRsDir, 'crates/spacetime-module'),
        filter: isCodeFile,
      },
    ],
    'api-server': [
      {
        path: serverRsDir,
        filter: (path) =>
          isCodeFile(path) &&
          !normalizePath(path).includes('/crates/spacetime-module/'),
      },
    ],
    web: [],
    'admin-web': [],
  };
}

function createDevServerSpawnOptions(overrides = {}) {
  return {
    ...overrides,
    stdio: ['ignore', 'pipe', 'pipe'],
  };
}

function pipeChildOutput(child) {
  child.stdout?.on('data', (chunk) => {
    process.stdout.write(chunk);
  });
  child.stderr?.on('data', (chunk) => {
    process.stderr.write(chunk);
  });
}

function uniqueNonEmpty(values) {
  return [
    ...new Set(
      values
        .map((value) => String(value ?? '').trim())
        .filter(Boolean),
    ),
  ];
}

function readRecordedSpacetimeUrl(dataDir) {
  const candidates = [
    resolve(dataDir, 'dev-spacetime-url'),
    resolve(dataDir, 'dev-rust-spacetime-url'),
  ];

  for (const candidate of candidates) {
    if (!existsSync(candidate)) {
      continue;
    }

    const value = readFileSync(candidate, 'utf8').split(/\r?\n/u)[0]?.trim();
    if (value) {
      return value;
    }
  }

  return '';
}

function readRecordedSpacetimePidState(dataDir) {
  const pidPath = resolve(dataDir, 'spacetime.pid');
  if (!existsSync(pidPath)) {
    return {state: 'missing', pid: 0};
  }

  try {
    const rawPid = readFileSync(pidPath, 'utf8').split(/\r?\n/u)[0]?.trim() ?? '';
    const pid = Number(rawPid);
    if (!Number.isInteger(pid) || pid <= 0) {
      return {state: 'invalid', pid: 0};
    }

    try {
      process.kill(pid, 0);
      return {state: 'alive', pid};
    } catch (error) {
      if (error?.code === 'EPERM') {
        return {state: 'alive', pid};
      }
      return {state: 'dead', pid: 0};
    }
  } catch (error) {
    if (error?.code === 'EBUSY' || error?.code === 'EPERM') {
      return {state: 'locked', pid: 0};
    }

    console.warn(`[dev:spacetime] 读取 PID 记录失败 ${pidPath}: ${error.message}`);
    return {state: 'unknown', pid: 0};
  }
}

function recordSpacetimeUrl(dataDir, serverUrl) {
  const targets = [
    resolve(dataDir, 'dev-spacetime-url'),
    resolve(dataDir, 'dev-rust-spacetime-url'),
  ];

  for (const target of targets) {
    ensureParentDir(target);
    try {
      writeFileSync(target, `${serverUrl}\n`, 'utf8');
    } catch (error) {
      console.warn(`[dev:spacetime] 写入 URL 记录失败 ${target}: ${error.message}`);
    }
  }
}

function buildUrl(baseUrl, path) {
  try {
    return new URL(path, baseUrl).href;
  } catch {
    return '';
  }
}

function safeUrlPort(rawUrl) {
  try {
    return Number(new URL(rawUrl).port);
  } catch {
    return 0;
  }
}

async function isHttpReady(url, timeoutMs = 1000) {
  const controller = new AbortController();
  const timeout = setTimeout(() => controller.abort(), timeoutMs);
  try {
    const response = await fetch(url, {signal: controller.signal});
    return response.status >= 200 && response.status < 500;
  } catch {
    return false;
  } finally {
    clearTimeout(timeout);
  }
}

function runForeground(command, args, {cwd, env, label}) {
  return new Promise((resolveRun, rejectRun) => {
    const child = spawn(command, args, {
      cwd,
      env,
      stdio: 'inherit',
      shell: process.platform === 'win32',
    });

    child.on('error', rejectRun);
    child.on('exit', (code, signal) => {
      if (signal) {
        rejectRun(new Error(`[dev:${label}] 被信号终止: ${signal}`));
        return;
      }

      if (code !== 0) {
        rejectRun(new Error(`[dev:${label}] 退出码: ${code}`));
        return;
      }

      resolveRun();
    });
  });
}

function randomHex(byteLength) {
  return randomBytes(byteLength).toString('hex');
}

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

function isCodeFile(path) {
  const fileName = basename(path);
  if (!fileName || fileName.startsWith('.')) {
    return false;
  }

  return /\.(rs|toml|ts|tsx|js|jsx|mjs|json|css|html)$/u.test(fileName);
}

function normalizePath(path) {
  return path.replace(/\\/gu, '/');
}

export {
  DevRunner,
  createDevServerSpawnOptions,
  createWatchConfigs,
  parseArgs,
  shouldAcceptWatchEvent,
};

async function main() {
  let runner;
  try {
    const baseEnv = mergeApiServerEnv(repoRoot, process.env);
    const {command, explicitOptions, options} = parseArgs(process.argv.slice(2), baseEnv);
    runner = new DevRunner(options, baseEnv, explicitOptions);
    await runner.init(command);

    process.on('SIGINT', () => {
      void runner.shutdown(130);
    });
    process.on('SIGTERM', () => {
      void runner.shutdown(143);
    });

    await runner.startCommand(command);
  } catch (error) {
    console.error(`[dev] ${error.message}`);
    if (runner) {
      await runner.shutdown(1);
    }
    process.exit(1);
  }
}

if (process.argv[1] && resolve(process.argv[1]) === fileURLToPath(import.meta.url)) {
  void main();
}