import { useState } from 'react';
import { Button, Select } from '../components/ui';
import type { SimulationSnapshot } from '../simulation/SimulationSession';
import type { BridgeStatus } from './ExternalControlClient';
import { ROBOT_PROFILES } from './registry';

export interface ExternalControlUI {
  status: BridgeStatus;
  endpoint: string;
  setEndpoint: (value: string) => void;
  token: string;
  setToken: (value: string) => void;
  observationAgeMs?: number;
  connect: () => Promise<void>;
  disconnect: (reason?: string) => void;
  authorize: () => void;
  stop: () => void;
}

export function ExternalControlPanel({
  snapshot,
  loading,
  bridge,
  onApplyProfile,
}: {
  snapshot: SimulationSnapshot;
  loading: boolean;
  bridge: ExternalControlUI;
  onApplyProfile: (id?: string) => void;
}) {
  const [profileId, setProfileId] = useState(snapshot.robot?.profileId ?? '');
  const external = snapshot.externalControl,
    ready = bridge.status.phase === 'ready';
  const owner = { manual: '手动', python: 'Python', policy: 'ONNX', external: '外部' }[
    snapshot.controlOwner ?? 'manual'
  ];
  return (
    <section aria-label="开源机器人控制" className="space-y-3 text-xs">
      <label className="block">
        机器人 profile
        <Select
          aria-label="控制接口 profile"
          className="mt-1 w-full"
          value={profileId}
          disabled={loading}
          onChange={(e) => setProfileId(e.target.value)}
        >
          <option value="">不启用（普通模型）</option>
          {ROBOT_PROFILES.map((p) => (
            <option key={p.id} value={p.id}>
              {p.label}
            </option>
          ))}
        </Select>
      </label>
      <Button disabled={loading} onClick={() => onApplyProfile(profileId || undefined)}>
        校验并重新编译 profile
      </Button>
      <p className="text-text-secondary">
        仅显式选择后生效；未知模型/版本拒绝接管。LeKiwi 使用简化动力学，不是实机标定。
      </p>
      <p>
        当前 profile：<strong>{snapshot.robot?.profileId ?? '未启用'}</strong>
      </p>
      {snapshot.robot && (
        <p>
          模型指纹：
          <code title={snapshot.robot.modelFingerprint}>
            {snapshot.robot.modelFingerprint.slice(0, 16)}
          </code>
        </p>
      )}
      <label className="block">
        本机桥接地址
        <input
          aria-label="本机桥接地址"
          className="field mt-1 w-full px-2 py-1"
          value={bridge.endpoint}
          disabled={bridge.status.phase !== 'disconnected'}
          onChange={(e) => bridge.setEndpoint(e.target.value)}
        />
      </label>
      <label className="block">
        控制 token（仅当前页面内存）
        <input
          aria-label="控制 token"
          type="password"
          autoComplete="off"
          className="field mt-1 w-full px-2 py-1"
          value={bridge.token}
          disabled={bridge.status.phase !== 'disconnected'}
          onChange={(e) => bridge.setToken(e.target.value)}
        />
      </label>
      <div className="flex flex-wrap gap-2">
        <Button
          disabled={
            loading ||
            !snapshot.robot ||
            bridge.status.phase !== 'disconnected' ||
            !bridge.token.trim()
          }
          onClick={() => void bridge.connect()}
        >
          {bridge.status.phase === 'connecting' ? '连接中…' : '连接桥接'}
        </Button>
        <Button
          disabled={bridge.status.phase === 'disconnected'}
          onClick={() => bridge.disconnect()}
        >
          断开桥接
        </Button>
      </div>
      <div className="flex flex-wrap gap-2">
        <Button
          variant="primary"
          disabled={loading || !ready || snapshot.paused || Boolean(external?.enabled)}
          onClick={bridge.authorize}
        >
          允许外部控制
        </Button>
        <Button disabled={!external?.enabled} onClick={bridge.stop}>
          停止外部控制
        </Button>
      </div>
      <p>
        连接：
        <span aria-label="桥接连接状态">
          {ready ? '已连接' : bridge.status.phase === 'connecting' ? '连接中' : '未连接'}
        </span>
      </p>
      <p>
        当前控制所有者：<strong aria-label="当前控制所有者">{owner}</strong>
      </p>
      <p aria-label="外部控制状态">
        {external?.connected
          ? '外部控制者已连接'
          : external?.enabled
            ? '等待 Python 控制者'
            : '未授权'}
      </p>
      <p aria-label="机器人观测状态">
        {snapshot.paused
          ? '已暂停（非实时观测）'
          : bridge.observationAgeMs === undefined
            ? '尚无观测'
            : `观测年龄 ${bridge.observationAgeMs.toFixed(0)} ms${bridge.observationAgeMs > 500 ? ' · 已过期' : ''}`}
      </p>
      {external && (
        <p className="technical-value">
          epoch {external.modelEpoch} · applied seq {external.lastActionSeq}
        </p>
      )}
      {(bridge.status.error || (external?.error && !external.enabled)) && (
        <p role="status" className="text-warning">
          {bridge.status.error || external?.error}
        </p>
      )}
      <p className="text-text-tertiary">
        先播放再授权。接管会停止 Python/ONNX，并锁定
        1×。暂停、重载、页面隐藏和500ms超时均撤销授权；不会自动恢复旧命令。
      </p>
      <p className="text-text-tertiary">
        物理/观测不依赖渲染帧率。外控视图上限30FPS；检测到软件渲染时关闭阴影并降至5FPS，为控制保留时间。
      </p>
      <p className="text-text-tertiary">
        V1：底盘/臂/夹爪和状态回读；不支持相机、锁步、LeRobot 数据采集或训练。
      </p>
    </section>
  );
}