import throttle from 'lodash/throttle';
import { wsManager } from '../WebSocketManager.ts';
import {
	getControlRight,
	getJurisdiction,
} from '../../api/device.ts';

import envConfig from '../../../env';

export default class DeviceController {
	constructor(userInfo, messageApi) {
		this.userInfo = userInfo;
		this.messageApi = messageApi;

		this.wsUrl =
			envConfig.WS_URL || 'wss://ri.satabot.com/ws/';

		this.connectedDeviceSn = null;
		this.currentDevice = null; // 保存当前设备

		this.requestDeviceId = '';

		this.isControlled = false;
		this.isRequestControl = false;
		this.hasControlRight = false;

		this.wsStatus = 'disconnected';
		this.wsDeviceInfo = {};

		this.controlTimeout = null;
		this.keepAliveInterval = null; // 后台保活定时器

		this.onDeviceInfoUpdate = null;
		this.onControlStatusChange = null;
		this.onWsStatusChange = null;
		this.onHasControlRightChange = null;
		this.onRequestControlStatusChange = null;
		this.onPermissionRequest = null;
		this.onIsFinished = null;
		this.handleArrivedPoint = null;

		this.handleWsMessage = this.handleWsMessage.bind(this);
		this.handleWsStatus = this.handleWsStatus.bind(this);
		this.handleVisibilityChange = this.handleVisibilityChange.bind(this);

		this.sendGamepad = throttle(
			this.sendGamepad.bind(this),
			50,
			{ leading: true, trailing: true }
		);
	}

	init() {
		this.unSubMessage = wsManager.onMessage(this.handleWsMessage);
		this.unSubStatus = wsManager.onStatusChange(this.handleWsStatus);

		// ========== 【集成】页面可见性监听 ==========
		document.addEventListener('visibilitychange', this.handleVisibilityChange);

		// ========== 【集成】后台保活定时 ==========
		//this.startKeepAlive();
	}

	// ========== 【集成】页面切前台重连 ==========
	handleVisibilityChange() {
		// 切后台：关闭 WS
		if (document.visibilityState === 'hidden') {
			console.log('🔌 页面切后台，关闭 WebSocket');
			this.release();
			wsManager.close();
			this.connectedDeviceSn = null;


			this.isControlled = false;
			this.onControlStatusChange?.(false);
		}
		if (document.visibilityState === 'visible' && this.currentDevice) {
			if (!this.currentDevice?.serialNumber) return;
			console.log('✅ 页面切回前台，自动重连 WebSocket');
			setTimeout(() => {
				this.connectDevice(this.currentDevice);
			}, 500);
		}
	}

	// ========== 【集成】后台保活 ==========
	startKeepAlive() {
		this.keepAliveInterval = setInterval(() => {
			if (
				this.connectedDeviceSn &&
				this.wsStatus !== 'connected' &&
				this.currentDevice?.serialNumber
			) {
				console.log('🔄 后台保活：尝试重连 WebSocket');
				this.connectDevice(this.currentDevice);
			}
		}, 8000);
	}
	release() {
		if (this.isControlled && this.connectedDeviceSn) {
			const data = {
				platform: "web",
				type: 1
			};
			const url = `${envConfig.baseURL}/forward/device/releaseControl`;

			try {
				const blob = new Blob([JSON.stringify(data)], { type: 'application/json' });
				navigator.sendBeacon(url, blob);
			} catch (e) {
				console.error('Failed to send releaseControl beacon:', e);
			}
		}
	}

	destroy() {
		this.clearControlTimeout();

		// 清理保活
		if (this.keepAliveInterval) {
			clearInterval(this.keepAliveInterval);
			this.keepAliveInterval = null;
		}

		// 移除监听
		document.removeEventListener('visibilitychange', this.handleVisibilityChange);

		this.unSubMessage?.();
		this.unSubStatus?.();
		this.release();

		//wsManager.close();
		this.connectedDeviceSn = null;

	}

	handleWsStatus(status) {
		this.wsStatus = status;
		this.onWsStatusChange?.(status);

		if (status === 'disconnected') {
			this.isControlled = false;
			this.onControlStatusChange?.(false);
		}
	}

	async connectDevice(device) {
		if (!device) return;

		// 保存当前设备，用于保活/重连
		this.currentDevice = device;
		if (!device.serialNumber) return;

		const sn = device.serialNumber;

		this.connectedDeviceSn = null;
		this.wsDeviceInfo = {};
		this.isControlled = false;
		this.onControlStatusChange?.(false);

		//wsManager.close();

		try {
			const res = await getControlRight({
				userName: this.userInfo.username,
				sourceType: 1,
				token: this.userInfo.token,
			});

			this.hasControlRight = res?.code === 200 && res.data == true;
			this.onHasControlRightChange?.(this.hasControlRight);

			wsManager.connect(sn, this.wsUrl);
			this.connectedDeviceSn = sn;

			if (!this.hasControlRight) {
				this.messageApi.warning('其他端正在控制');
				return;
			}



			await this.getControl(sn);
		} catch (err) {
			console.error(err);
			this.messageApi.error('权限校验失败');
		}
	}

	async getControl(serialnum) {
		try {
			const res = await getJurisdiction({
				platform: 'web',
				deviceId: serialnum,
			});

			this.isControlled = res?.code === 200 && res?.data?.remoteControl === true;
			this.onControlStatusChange?.(this.isControlled);
		} catch (err) {
			console.error(err);
			this.isControlled = false;
			this.onControlStatusChange?.(false);
		}
	}

	requestControl() {
		if (this.isRequestControl) return;
		if (!this.hasControlRight) {
			this.messageApi.warning('无控制权限');
			return;
		}

		this.isRequestControl = true;
		this.onRequestControlStatusChange?.(true);

		this.messageApi.loading({
			key: 'control',
			content: '请求控制中...',
			duration: 0,
		});

		this.sendPermissionRequest(true, 'switchPermission');
		this.clearControlTimeout();

		this.controlTimeout = setTimeout(() => {
			if (!this.isRequestControl) return;
			this.isRequestControl = false;
			this.onRequestControlStatusChange?.(false);
			this.messageApi.destroy('control');
			this.messageApi.error('控制请求超时');
			this.clearControlTimeout();

		}, 20000);
	}

	clearControlTimeout() {
		if (this.controlTimeout) {
			clearTimeout(this.controlTimeout);
			this.controlTimeout = null;
		}
	}

	sendPermissionRequest(data, type) {
		wsManager.send({
			type,
			switchResult: data,
			token: this.userInfo.token,
			deviceId: type === 'switchPermission' ? this.connectedDeviceSn : this.requestDeviceId,
			userName: this.userInfo.username,
		});
	}

	handleWsMessage(msg) {
		console.log('📨 收到消息：', msg);
		switch (msg.type) {
			case 'deviceInfo': {
				const data = {};
				msg.data.forEach((item) => {
					data[item.name] = item.value;
				});
				this.wsDeviceInfo = data;
				this.onDeviceInfoUpdate?.(data);
				break;
			}

			case 'AUTH': {
				if (msg.isAuth) {
					this.getControl(this.connectedDeviceSn);
				}
				break;
			}

			case 'switchResult': {

				this.clearControlTimeout();
				this.isRequestControl = false;
				this.onRequestControlStatusChange?.(false);

				if (msg.success === false || msg?.respond?.switchResult === false) {
					this.isControlled = false;
					this.onControlStatusChange?.(false);
					this.messageApi.error({ key: 'control', content: msg.message || '控制失败' });
					return;
				}
				this.isControlled = true;
				this.onControlStatusChange?.(true);
				this.messageApi.success({ key: 'control', content: '控制成功' });
				break;
			}
			case "device_task_change": {
				if (msg.deviceId != this.connectedDeviceSn) return;
				this.onIsFinished?.(true);
				console.log('🔌 控制结果任务变更,', msg);

			}
			//完成点
			case "device_task_arrive_point": {
				if (msg.deviceId != this.connectedDeviceSn) return;

				this.handleArrivedPoint?.(msg.entity);
				console.log('🔌 到达完成点,', msg);

			}


			case 'switchPermission': {
				const platform = (msg.platform || '').toLowerCase();
				if (!platform || platform === 'null') return;

				this.requestDeviceId = msg.deviceId;
				this.onPermissionRequest?.({
					title: '权限请求',
					content: `${msg.platform} 请求控制设备`,
				});
				break;
			}

			case 'detectionReport':
				if (msg.data?.deviceId !== this.connectedDeviceSn) return;
				const { isSecure, obstacle } = msg.data;
				if (isSecure) return;
				const type = obstacle?.type;
				const distance = (obstacle?.distance || 0).toFixed(2);
				const types = { 0: '未知', 1: '人', 2: '车辆', 3: '围栏', 4: '坑洞', 5: '草丛' };
				this.messageApi.warning({
					key: 'obstacle-warning',
					content: `检测到 ${types[type] ?? '未知物'}，距离 ${distance}m`,
					duration: 3,
				});
				break;

			default:
				break;
		}
	}

	sendGamepad(state) {
		if (!this.isControlled || !this.connectedDeviceSn) return;
		wsManager.send({
			type: 'remoteControl',
			remoteData: state,
			token: this.userInfo.token,
			userName: this.userInfo.username,
		});
	}
}