/**
 * 继电器命令行调试工具 —— 参数化触发按键/配对/原始命令,方便接线调试。
 *
 * 用法(端口/波特率走 .env 的 SERIAL_PORT/SERIAL_BAUD):
 *   npx ts-node scripts/relay.ts probe                      # 查版本(只读握手)
 *   npx ts-node scripts/relay.ts status                     # 读 64 路状态
 *   npx ts-node scripts/relay.ts pair remote                # 进配对(按 config 默认)
 *   npx ts-node scripts/relay.ts pair meter --hold 2500     # 进配对,覆盖时长
 *   npx ts-node scripts/relay.ts press remote convex --hold 800   # 点按命名键
 *   npx ts-node scripts/relay.ts pulse 34,35 --hold 3000    # 同时脉冲指定通道
 *   npx ts-node scripts/relay.ts on 34   /  off 34          # 单路通/断
 *   npx ts-node scripts/relay.ts raw 55C8210155            # 发原始 16 进制帧
 */
import * as dotenv from 'dotenv';
import * as path from 'path';
dotenv.config({ path: path.resolve(__dirname, '../.env') });

import { SerialController } from '../utils/common/serial_controller';
import { triggerRelayAction, pressButton } from '../utils/common/relay.helper';

function flag(name: string): string | undefined {
  const i = process.argv.indexOf(`--${name}`);
  return i >= 0 ? process.argv[i + 1] : undefined;
}

/** 取位置参数(剔除 --flag 及其紧随的值)。 */
function positionals(): string[] {
  const argv = process.argv.slice(2);
  const out: string[] = [];
  for (let i = 0; i < argv.length; i++) {
    if (argv[i].startsWith('--')) {
      i++; // 跳过该 flag 的值
      continue;
    }
    out.push(argv[i]);
  }
  return out;
}

async function main() {
  const [cmd, a, b] = positionals();
  const hold = flag('hold') ? parseInt(flag('hold') as string, 10) : undefined;

  switch (cmd) {
    case 'probe': {
      const c = new SerialController();
      await c.open();
      console.log(await c.queryVersion());
      await c.close();
      break;
    }
    case 'status': {
      const c = new SerialController();
      await c.open();
      console.log('status:', (await c.readStatus()).toString('hex').toUpperCase());
      await c.close();
      break;
    }
    case 'pair': {
      if (!a) throw new Error('用法: pair <device> [--hold ms]');
      await triggerRelayAction(a, 'pairing', hold ? { holdMs: hold } : {});
      break;
    }
    case 'press': {
      if (!a || !b) throw new Error('用法: press <device> <button> [--hold ms]');
      await pressButton(a, b, hold ?? 500);
      break;
    }
    case 'pulse': {
      if (!a) throw new Error('用法: pulse <ch1,ch2,...> [--hold ms]');
      const chs = a.split(',').map((s) => parseInt(s, 10));
      const c = new SerialController();
      await c.open();
      await c.pulseChannels(chs, hold ?? 500);
      console.log(`脉冲通道[${chs.join(',')}] ${hold ?? 500}ms 完成`);
      await c.close();
      break;
    }
    case 'on':
    case 'off': {
      if (!a) throw new Error(`用法: ${cmd} <ch>`);
      const c = new SerialController();
      await c.open();
      const resp = cmd === 'on' ? await c.relayOn(parseInt(a, 10)) : await c.relayOff(parseInt(a, 10));
      console.log(`${cmd} ${a}:`, resp.toString('hex').toUpperCase());
      await c.close();
      break;
    }
    case 'raw': {
      if (!a) throw new Error('用法: raw <hex,如 55C8210155>');
      const bytes = (a.match(/.{1,2}/g) || []).map((h) => parseInt(h, 16));
      const c = new SerialController();
      await c.open();
      console.log('resp:', (await c.send(bytes)).toString('hex').toUpperCase());
      await c.close();
      break;
    }
    default:
      console.log('命令: probe | status | pair <dev> | press <dev> <btn> | pulse <chs> | on <ch> | off <ch> | raw <hex>  [--hold ms]');
  }
}

main().catch((e) => {
  console.error('错误:', e.message);
  process.exit(1);
});