/**
 * BLE 蓝牙连接与设备控制 mixin
 * 负责：权限检查、连接/断连/重连、指令收发、设备状态管理
 */
import bleManager, { BLE_STATE, MODE, MOXI_STATE, POWER, MUTE, TEMPERATURE, CHAIR_ANGLE } from '@/utils/ble'
import { ensureBlePrerequisite } from '@/utils/ble/permission.js'

export default {
	data() {
		return {
			linked: false,
			deviceStatus: 0, // 0停止 1预热 2点火 3艾灸 4灭火 5暂停
			hotPercentage: '0%',
			ispreHot: false,
			reconnectDrawer: false,
			reconnectCount: 0,
			excepDrawer: false,
			exceTxt: 0,
			isShowConfirm: false,
			_unbinders: []
		}
	},
	methods: {
		// ========== BLE 初始化 ==========
		async initBle() {
			// 1. Android权限检查（iOS由系统自动弹窗，无需手动处理）
			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
				}
			}

			// 2. 重置BLE适配器，清除search页面可能残留的扫描状态
			try { await bleManager.destroy() } catch (_) {}

			// 3. 重新初始化适配器
			await bleManager.init()

			// 4. 监听BLE事件（必须在destroy之后注册，因为destroy会清除所有监听器）
			this._unbinders = [
				bleManager.on('state', (s) => {
					this.linked = (s === BLE_STATE.READY_COMM)
					if (s === BLE_STATE.DISCONNECTED) {
						this.linked = false
						this._handleBleDisconnect()
					}
				}),
				bleManager.on('disconnected', (info) => {
					this.linked = false
					if (!info.manual) {
						this._handleBleDisconnect()
					}
				}),
				bleManager.on('reconnected', () => {
					this.reconnectDrawer = false
					this.reconnectCount = 0
					this.linked = true
					this.$refs.ayToast.success('重连成功')
				}),
				bleManager.on('report:GROUP_1', (data) => {
					this._handleGroup1(data)
				}),
				bleManager.on('report:GROUP_2', (data) => {
					this._handleGroup2(data)
				})
			]

			// 5. 扫描并连接设备（与ble-demo一致的可靠方式：先扫描发现设备，再连接）
			try {
				const scanOpt = { timeout: 8000 }
				if (this.deviceName) {
					scanOpt.deviceName = this.deviceName
				}
				await bleManager.scanAndConnect(scanOpt)
				this.linked = true
				this._sendCurrentState()
			} catch (e) {
				console.error('BLE连接失败', e)
				this.$refs.ayToast.error('连接失败: ' + (e.message || e.code || ''))
			}
		},

		_cleanListeners() {
			if (this._unbinders && this._unbinders.length) {
				this._unbinders.forEach(fn => fn && fn())
				this._unbinders = []
			}
		},

		_handleBleDisconnect() {
			this.reconnectCount++
			if (this.reconnectCount >= 4) {
				this.reconnectDrawer = false
				this.$refs.ayToast.error('连接失败，请返回重试')
				setTimeout(() => {
					uni.navigateBack()
				}, 1500)
			} else {
				this.reconnectDrawer = true
			}
		},

		// ========== 设备上报数据解析 ==========
		_handleGroup1(data) {
			// 参数组1: 设备状态
			switch (data.runtimeState) {
				case 0x00:
					this.deviceStatus = 0
					break
				case 0x01:
				case 0x02:
					this.deviceStatus = 1
					break
				case 0x03:
					this.deviceStatus = 3
					break
				case 0x04:
					this.deviceStatus = 4
					break
				case 0x05:
					this.deviceStatus = 5
					break
			}
			// 模式
			switch (data.mode) {
				case MODE.LEISURE:
					this.modeType = 0; break
				case MODE.PROFESSIONAL:
					this.modeType = 1; break
				case MODE.PERSONAL:
					this.modeType = 2; break
				case MODE.EXPERT:
					this.modeType = 3; break
			}
			// 剩余时间
			const m = data.remainMinute || 0
			const s = data.remainSecond || 0
			const h = Math.floor(m / 60)
			const m1 = m % 60
			this.subTime = `${h.toString().padStart(2,'0')}:${m1.toString().padStart(2,'0')}:${s.toString().padStart(2,'0')}`

			// 异常检测
			if (data.foreignDetect === 0x02) {
				this.excepDrawer = true
				this.exceTxt = 1
			}
			// 耗材状态
			this.otherSetting.aijiuNum = String(data.consumable || 0)
			this.otherSetting.lvxinNum = String(data.filterPercent || 0)
			this.otherSetting.huishouNum = String(data.recycleBinPct || 0)
		},

		_handleGroup2(data) {
			// 参数组2: 预热/点火进度
			if (data.preheatPercent < 100) {
				this.ispreHot = false
				this.hotPercentage = data.preheatPercent + '%'
			} else {
				this.ispreHot = true
				this.hotPercentage = data.ignitePercent + '%'
			}
		},

		// ========== 发送指令 ==========
		_sendCurrentState() {
			const modeMap = [MODE.LEISURE, MODE.PROFESSIONAL, MODE.PERSONAL, MODE.EXPERT]
			bleManager.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.deviceStatus = 1
			this.ispreHot = false
			let totalDuration = 0
			this.curCase.forEach(item => {
				totalDuration += item.time
			})
			// 发送开始指令
			const modeMap = [MODE.LEISURE, MODE.PROFESSIONAL, MODE.PERSONAL, MODE.EXPERT]
			bleManager.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))

			// 发送穴位坐标
			if (this.curCase.length > 0) {
				const points = this.curCase.map(item => ({
					point: item.id,
					x: item._x,
					y: item._y
				}))
				bleManager.sendAcupoints(points).catch(e => console.error('sendAcupoints fail', e))
			}
		},

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

		// ========== 停止 ==========
		stopPreHot() {
			this.isShowConfirm = true
		},
		confirmStop() {
			this.deviceStatus = 0
			this.isShowConfirm = false
			bleManager.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.modeType = num
						this.deviceStatus = 0
						this.isShowDrawer2 = false
						if (this._stopAudioOnModeChange) {
							this._stopAudioOnModeChange()
						}
						// 发送模式切换指令
						const modeMap = [MODE.LEISURE, MODE.PROFESSIONAL, MODE.PERSONAL, MODE.EXPERT]
						bleManager.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() {
			this._cleanListeners()
			bleManager.disconnect().catch(() => {})
		}
	}
}