/**
 * BLE 蓝牙连接与设备控制 mixin
 * 基于 Pinia Store 管理蓝牙单例状态
 * 负责：权限检查、连接/断连/重连、指令收发、设备状态管理
 */
import { useBleStore } from '@/stores/ble'
import { MODE, MOXI_STATE, POWER, MUTE, TEMPERATURE, CHAIR_ANGLE } from '@/utils/ble/constants.js'
import { ensureBlePrerequisite, openBluetoothSettings, openLocationSettings } from '@/utils/ble/permission.js'

export default {
	data() {
		return {
			isShowConfirm: false
		}
	},
	computed: {
		bleStore() {
			return useBleStore()
		},
		linked() {
			return this.bleStore.linked
		},
		deviceStatus: {
			get() { return this.bleStore.deviceStatus },
			set(val) { this.bleStore.deviceStatus = val }
		},
		hotPercentage() {
			return this.bleStore.hotPercentage
		},
		ispreHot: {
			get() { return this.bleStore.ispreHot },
			set(val) { this.bleStore.ispreHot = val }
		},
		reconnectDrawer() {
			return this.bleStore.reconnectDrawer
		},
		reconnectCount() {
			return this.bleStore.reconnectCount
		},
		excepDrawer: {
			get() { return this.bleStore.excepDrawer },
			set(val) { this.bleStore.excepDrawer = val }
		},
		exceTxt: {
			get() { return this.bleStore.exceTxt },
			set(val) { this.bleStore.exceTxt = val }
		}
	},
	methods: {
		// ========== BLE 初始化 ==========
		async initBle() {
			// 1. Android权限检查
			try {
				await ensureBlePrerequisite()
			} catch (e) {
				if (e.message === 'BLE_PERMISSION_DENIED') {
					this.$refs.ayToast.error('请授予蓝牙权限后重试')
					return
				}
				if (e.message === 'BLE_LOCATION_OFF') {
					this.$refs.ayToast.error('请开启位置服务后重试')
					return
				}
				if (e.message === 'BLE_ADAPTER_OFF') {
					uni.showModal({
						title: '提示',
						content: '蓝牙未开启，请先开启蓝牙',
						cancelText: '取消',
						confirmText: '去开启',
						success: (res) => {
							if (res.confirm) {
								openBluetoothSettings()
							}
						}
					})
					return
				}
			}

			// 2. 判断当前是否已连接同一设备，如果是则跳过重连
			// 使用 advertisData（= 后台 deviceCode）作为跨平台设备唯一标识
			const currentDevice = this.bleStore.device
			console.log('[BLE] 当前设备', currentDevice, this.bleStore.linked, this.advertisData)
			if (this.bleStore.linked && currentDevice && this.advertisData && currentDevice.advertisData === this.advertisData) {
				console.log('[BLE] 已连接相同设备(advertisData匹配)，跳过重连', this.advertisData)
				return
			}

			// 3. 不同设备或未连接：断开旧连接并关闭适配器（不解绑全局监听器）
			try { await this.bleStore.disconnect() } catch (_) {}
			try { await this.bleStore.resetAdapter() } catch (_) {}

			// 4. 扫描并连接设备（优先直连，跳过扫描避免 Android 限流）
			try {
				const scanOpt = { timeout: 8000 }
				// 已有 deviceId 时优先直连，不需要扫描
				if (this.deviceId) {
					scanOpt.deviceId = this.deviceId
				}
				if (this.deviceName) {
					scanOpt.deviceName = this.deviceName
				}
				// 传递 advertisData 用于连接后存储到 device 对象
				if (this.advertisData) {
					scanOpt.advertisData = this.advertisData
				}
				await this.bleStore.scanAndConnect(scanOpt)
				// BLE连接建立后需短暂等待设备就绪再发首条指令
				await new Promise(r => setTimeout(r, 1500))
				this._sendCurrentState()
			} catch (e) {
				console.error('BLE连接失败', e)
				this.$refs.ayToast.error(this._bleFriendlyMsg(e))
			}
		},

		// ========== 发送指令 ==========
		_sendCurrentState() {
			const modeMap = [MODE.LEISURE, MODE.PROFESSIONAL, MODE.PERSONAL, MODE.EXPERT]
			this.bleStore.sendBasic({
				power: POWER.ON,
				moxiState: MOXI_STATE.DONE,
				preheatState: MOXI_STATE.DONE,
				mute: MUTE.OFF,
				mode: modeMap[this.modeType] || MODE.LEISURE,
				subMode: 0x01,
				temperature: TEMPERATURE.MID,
				angle: CHAIR_ANGLE.OFF,
				duration: 0
			}).catch(e => console.error('sendBasic fail', e))
		},

		// ========== 开始艾灸 ==========
		startDeviceEvt() {
			this.bleStore.deviceStatus = 1
			this.bleStore.ispreHot = false
			let totalDuration = 0
			this.curCase.forEach(item => {
				totalDuration += item.time
			})
			const modeMap = [MODE.LEISURE, MODE.PROFESSIONAL, MODE.PERSONAL, MODE.EXPERT]
			this.bleStore.sendBasic({
				power: POWER.ON,
				moxiState: MOXI_STATE.START,
				preheatState: MOXI_STATE.START,
				mute: MUTE.OFF,
				mode: modeMap[this.modeType] || MODE.LEISURE,
				subMode: 0x01,
				temperature: TEMPERATURE.MID,
				angle: CHAIR_ANGLE.OFF,
				duration: totalDuration || 30
			}).catch(e => console.error('startDevice fail', e))

			if (this.curCase.length > 0) {
				const points = this.curCase.map(item => ({
					point: item.id,
					x: item._x,
					y: item._y
				}))
				this.bleStore.sendAcupoints(points).catch(e => console.error('sendAcupoints fail', e))
			}
		},

		// ========== 暂停/继续 ==========
		stopAijiu() {
			if (this.deviceStatus == 5) {
				this.bleStore.deviceStatus = 3
				this.bleStore.sendBasic({ moxiState: MOXI_STATE.START }).catch(() => {})
			} else if (this.deviceStatus == 3) {
				this.bleStore.deviceStatus = 5
				this.bleStore.sendBasic({ moxiState: MOXI_STATE.PAUSE }).catch(() => {})
			}
		},

		// ========== 停止 ==========
		stopPreHot() {
			this.isShowConfirm = true
		},
		confirmStop() {
			this.bleStore.deviceStatus = 0
			this.isShowConfirm = false
			this.bleStore.sendBasic({ moxiState: MOXI_STATE.DONE }).catch(() => {})
		},

		// ========== 模式切换 ==========
		changeMode(num) {
			uni.showModal({
				title: '提示',
				content: '切换模式会停止当前的艾灸，是否继续',
				cancelText: '取消',
				confirmText: '继续',
				success: (res) => {
					if (res.confirm) {
						this.bleStore.modeType = num
						this.bleStore.deviceStatus = 0
						this.isShowDrawer2 = false
						if (this._stopAudioOnModeChange) {
							this._stopAudioOnModeChange()
						}
						const modeMap = [MODE.LEISURE, MODE.PROFESSIONAL, MODE.PERSONAL, MODE.EXPERT]
						this.bleStore.sendBasic({
							power: POWER.ON,
							moxiState: MOXI_STATE.DONE,
							preheatState: MOXI_STATE.DONE,
							mute: MUTE.OFF,
							mode: modeMap[num] || MODE.LEISURE,
							subMode: 0x01,
							temperature: TEMPERATURE.MID,
							angle: CHAIR_ANGLE.OFF,
							duration: 0
						}).catch(e => console.error('changeMode fail', e))
					}
				}
			})
		},

		// ========== 断开BLE ==========
		disconnectBle() {
			// 先停止扫描（防止页面销毁后 onBluetoothDeviceFound 回调找不到 taskCenter）
			this.bleStore.stopScan()
			this.bleStore.disconnect().catch(() => {})
		},

		/**
		 * 页面离开时的轻量清理：只停止扫描，不断开BLE连接
		 * 保持蓝牙连接状态，下次进入相同设备页面可复用
		 */
		cleanupOnLeave() {
			this.bleStore.stopScan()
		},

		// ========== BLE错误码转用户友好提示 ==========
		_bleFriendlyMsg(e) {
			const code = e && (e.code || e.message || '')
			const originMsg = e && e.origin && e.origin.msg
			const map = {
				BLE_SCAN_FAIL: this.bleStore.scanThrottled
					? '扫描过于频繁，请等待30秒后再试'
					: (originMsg || '未搜索到设备，请确保设备已开机并靠近手机'),
				BLE_CONNECT_FAIL: '连接设备失败，请确保设备在范围内并重试',
				BLE_CONNECT_TIMEOUT: '连接超时，请靠近设备后重试',
				BLE_ADAPTER_OFF: '蓝牙未开启，请先开启蓝牙',
				BLE_PERMISSION_DENIED: '蓝牙权限未授予，请在设置中开启',
				BLE_LOCATION_OFF: '位置服务未开启，请开启后重试',
				BLE_DISCONNECTED: '设备已断开连接',
				BLE_SERVICE_NOT_FOUND: '设备服务异常，请重启设备后重试',
				BLE_WRITE_FAIL: '指令发送失败，请重试',
				BLE_BUSY: '设备正忙，请稍后再试'
			}
			return map[code] || ('连接失败，请重试 (' + code + ')')
		}
	}
}