bodyWeight/components/configureDevice_2/configureDevice_2.js

const app = getApp();
import $ from "../../utils/request";

Component({
    data: {
        BLUE_STATE: {},
        device: null,
        connectState: "",
        userList: [],
    },

    // 存储回调函数的引用，以便在 detached 时取消监听
    _connectStateWatcher: null,

    lifetimes: {
        attached() {
            console.log(`[Component] connectState 获取: ${app.globalData.ppScale.device.connectState}`);
            this.setData({
                BLUE_STATE: app.globalData.ppScale.plugin.BLUE_STATE,
                connectState: app.globalData.ppScale.device.connectState,
                device: app.globalData.ppScale.device.connection
            })
            this._connectStateWatcher = (newValue, oldValue) => {
                console.log(`[Component] connectState 变化: ${oldValue} -> ${newValue}`);
                this.setData({
                    connectState: newValue || ''
                });
            };
            app.watch('ppScale.device.connectState', this._connectStateWatcher);

            this.fetchUserList();
        },
        detached() {
            // 4. 在组件销毁时取消监听，防止内存泄漏
            if (this._connectStateWatcher) {
                app.unwatch('ppScale.device.connectState', this._connectStateWatcher);
            }
        }
    },
  
    // 组件的方法
    methods: {
        // 手动重连设备
        connectedDevice() {
            app.resetReconnectCount();
            this.triggerEvent('connectedDeviceEvent', {
                device: this.data.device
            });
        },

        addUser() {
			this.selectComponent("#configureDevice2AddUser").showModal();
        },

		getAddUserInfo() {
			this.fetchUserList();
		},

        // 获取设备绑定的用户列表
        fetchUserList() {
            let sn = app.globalData.ppScale.device.mac.replace(/:/g, '');
            $.ajax("weighingScale/v2/select/user", { sn }, "GET", true, "正在获取用户列表...").then(res => {
                if (res.result && res.result.length) {
                    this.setData({ userList: res.result });
                } else {
                    this.setData({ userList: [] });
                }
            }).catch(() => {
                wx.showToast({
                    title: "用户列表获取失败",
                    icon: "none"
                })
            })
        },

        // 删除用户
        delUserClick(e) {
            let id = e.currentTarget.dataset.id;
            wx.showModal({
                title: "提示",
                content: "确定要删除该用户吗？",
                success: (res) => {
                    if (res.confirm) {
                        $.ajax("weighingScale/v2/del/user", { id }, "DELETE", true, "正在删除...").then(() => {
                            wx.showToast({
                                title: "删除成功",
                                icon: "success"
                            })
                            this.fetchUserList();
                        }).catch(() => {
                            wx.showToast({
                                title: "删除失败，请重试",
                                icon: "none"
                            })
                        })
                    }
                }
            })
        },

        setUserInfo() {
            if (this.data.connectState != this.data.BLUE_STATE.CONNECTSUCCESS && this.data.connectState != this.data.BLUE_STATE.WIFISUCCESS) {
                wx.showToast({
                    title: "设备连接失败，请重试。",
                    icon: "none"
                })
                return;
            }

            let userList = this.data.userList;
            if (!userList.length) {
                wx.showToast({
                    title: "暂无用户信息，请先添加用户",
                    icon: "none"
                })
                return;
            }

            // 先获取设备端已有用户，只下发新用户
            wx.showLoading({ title: "正在下发用户信息...", mask: true });
            app.globalData.ppScale.activeProtocol.dataFetchUserID((deviceUserIds) => {
                console.log("设备端已有用户ID列表", deviceUserIds);
                let existIds = Array.isArray(deviceUserIds) ? deviceUserIds : [];
                let needSyncList = userList.filter(user => !existIds.includes(user.userId));

                if (!needSyncList.length) {
                    wx.hideLoading();
                    wx.showToast({
                        title: "用户信息已同步",
                        icon: "success"
                    })
                    setTimeout(() => {
                        this.triggerEvent('deviceEvent', { status: true });
                    }, 1500)
                    return;
                }

                let index = 0;
                const syncNext = () => {
                    if (index >= needSyncList.length) {
                        wx.hideLoading();
                        wx.showToast({
                            title: "用户信息下发成功",
                            icon: "success"
                        })
                        setTimeout(() => {
                            this.triggerEvent('deviceEvent', { status: true });
                        }, 1500)
                        return;
                    }
                    let user = needSyncList[index];
                    app.globalData.ppScale.activeProtocol.dataSyncUserInfo({
                        userID: user.userId,
                        userName: user.realname,
                        memberID: "",
                        age: user.age,
                        gender: user.sex,
                        height: user.height,
                        isAthleteMode: 0,
                        currentWeight: String(user.weight),
                        deviceHeaderIndex: index,
                        targetWeight: "",
                        idealWeight: "",
                        recentData: [],
                    }, (res) => {
                        if (res == 0) {
                            index++;
                            syncNext();
                        } else {
                            wx.hideLoading();
                            console.log("dataSyncUserInfo", res);
                            wx.showToast({
                                title: "用户信息下发失败，请重试。",
                                icon: "none"
                            })
                        }
                    })
                };
                syncNext();
            });
        },
    }
});