import { leFuService } from '../../lefu/index'
import type { SyncUserData } from '../../lefu/index'

/** 连接状态订阅句柄 */
let unsubDeviceConnect: (() => void) | null = null
let unsubDisconnected: (() => void) | null = null
/** 同步完成关闭弹框定时器 */
let syncCloseTimer: number | null = null

Page({
    data: {
        device: {
            name: '智能体重秤',
            connected: false,
            model: '',
            serial: ''
        },
        memberCount: 5,
        hasData: true,
        self: {
            name: '张晓敏',
            gender: '男',
            age: 36,
            height: 172,
            sync: '已同步',
            syncClass: 'done'
        },
        groups: [
            {
                title: '员工',
                members: [
                    { id: 2, name: '李建国', gender: '男', age: 36, height: 182, sync: '已同步', syncClass: 'done' },
                    { id: 5, name: '赵明亮', gender: '男', age: 32, height: 172, sync: '已同步', syncClass: 'done' }
                ]
            },
            {
                title: '家庭用户',
                members: [
                    { id: 3, name: '吉夏', gender: '女', age: 28, height: 165, sync: '已同步', syncClass: 'done' },
                    { id: 4, name: '张雪', gender: '女', age: 32, height: 158, sync: '未同步', syncClass: 'pending' }
                ]
            }
        ],
        syncShow: false,
        syncPercent: 0,
        syncStatus: ''
    },

    onLoad() {
        this._updateDeviceInfo()
        this._subscribeDeviceState()
    },

    onUnload() {
        unsubDeviceConnect?.()
        unsubDisconnected?.()
        unsubDeviceConnect = null
        unsubDisconnected = null
        if (syncCloseTimer !== null) { clearTimeout(syncCloseTimer); syncCloseTimer = null }
    },

    /** 从 service 读取设备信息 + 连接状态 */
    _updateDeviceInfo() {
        const info = leFuService.deviceInfo
        this.setData({
            'device.name': info?.modelNumber || '智能体重秤',
            'device.model': info?.modelNumber || '',
            'device.serial': info?.serialNumber || '',
            'device.connected': leFuService.isConnected,
        })
    },

    /** 订阅连接状态，实时同步设备卡 */
    _subscribeDeviceState() {
        unsubDeviceConnect?.()
        unsubDisconnected?.()
        unsubDeviceConnect = leFuService.onDeviceConnect(() => {
            this._updateDeviceInfo()
        })
        unsubDisconnected = leFuService.onDisconnected(() => {
            this.setData({ 'device.connected': false })
        })
    },

    /** 校验设备连接状态：未连接则同步状态 + 提示 */
    _ensureConnected(): boolean {
        if (leFuService.isConnected) return true
        this.setData({ 'device.connected': false })
        wx.showToast({ title: '请先连接设备', icon: 'none' })
        return false
    },

    /** 同步用户至设备 */
    onTapSync() {
        if (!this._ensureConnected()) return

        // 组装所有用户（self 第一个，作为主用户），性别：男=1 女=0
        const allUsers = [
            {
                id: 'self', name: this.data.self.name,
                gender: this.data.self.gender === '男' ? 1 : 0,
                age: this.data.self.age, height: this.data.self.height,
            },
            ...this.data.groups.flatMap(g => g.members.map(m => ({
                id: String(m.id), name: m.name,
                gender: m.gender === '男' ? 1 : 0, age: m.age, height: m.height,
            }))),
        ]
        const mainUser = allUsers[0]
        // 组装下发参数（SyncUserData），第一个为主用户（memberID 为空）
        const syncDataList: SyncUserData[] = allUsers.map((user, index) => ({
            userID: mainUser.id,
            userName: user.name,
            memberID: index === 0 ? '' : user.id,
            age: user.age,
            gender: user.gender,
            height: user.height,
            isAthleteMode: 0,
            deviceHeaderIndex: index,
            currentWeight: '',
            targetWeight: '',
            idealWeight: '',
            recentData: [],
        }))

        // 阶段1：清空设备用户，进度 0% → 100%
        this.setData({ syncShow: true, syncPercent: 0, syncStatus: '正在清空设备用户...' })
        leFuService.clearDeviceMembers()
            .then(() => {
                this.setData({ syncPercent: 100, syncStatus: '清空完成' })
                // 阶段2：下发用户，进度从 0% 重新开始
                this.setData({ syncPercent: 0, syncStatus: '正在同步信息，请勿离开...' })
                return leFuService.syncMembersToDevice(syncDataList, (current, total) => {
                    this.setData({
                        syncPercent: Math.round((current / total) * 100),
                        syncStatus: `正在同步 ${current}/${total}...`,
                    })
                })
            })
            .then(() => {
                this.setData({ syncPercent: 100, syncStatus: '同步完成' })
                wx.showToast({ title: '用户同步成功', icon: 'success' })
                if (syncCloseTimer !== null) { clearTimeout(syncCloseTimer); syncCloseTimer = null }
                syncCloseTimer = setTimeout(() => {
                    syncCloseTimer = null
                    this.setData({ syncShow: false })
                }, 1000)
            })
            .catch((err: Error) => {
                this.setData({ syncShow: false })
                wx.showToast({ title: err.message || '同步失败，请重试', icon: 'none' })
            })
    },

    /** 添加用户 */
    onTapAddUser() {
        wx.navigateTo({ url: '/pages/addUser/addUser' })
    },

    /** 一键添加本人 */
    onTapAddSelf() {
        // 一键添加本人（待接入）
    },

    /** 添加新用户 */
    onTapAddNew() {
        wx.navigateTo({ url: '/pages/addUser/addUser' })
    }
})