Bng_bgj-wechat/bgj/pointsBasedOrder/selectProduct.js

const _Http = getApp().globalData.http;

Page({
    data: {
        list: [],
        selectedCount: 0,
        selectedTotalPoints: 0,
        total: 0,
        sc_orderid: '',
        content: {
            nocache: true,
            pageNumber: 1,
            pageSize: 20,
            where: {
                condition: ""
            }
        }
    },

    onLoad(options) {
        this.setData({
            sc_orderid: options.sc_orderid || ''
        });
        getApp().globalData.Language.getLanguagePackage(this, '选择商品');
        this.getList();
    },

    // 搜索
    onSearch({ detail }) {
        this.data.content.where.condition = detail;
        this.getList(true);
    },

    // 获取商品列表
    getList(init = false) {
        if (init) this.selectComponent('#ListBox').goTop();
        _Http.init(this.data.content, init).then(content => {
            _Http.basic({
                id: 2026052510110006,
                content
            }).then(res => {
                this.selectComponent('#ListBox').RefreshToComplete();
                if (res.code != '1') return wx.showToast({ title: res.msg, icon: "none" });
                const list = (res.data || []).map(item => {
                    // 处理图片URL
                    try {
                        if (item.attinfos && item.attinfos.length) {
                            let att = item.attinfos[0];
                            item.imgUrl = att.subfiles ? _Http.getSpecifiedImage(att) : (att.url || '');
                        } else {
                            item.imgUrl = '';
                        }
                    } catch (e) {
                        item.imgUrl = '';
                    }
                    item.selected = false;
                    item.qty = item.minimumorderqty || 1; // 初始化数量为起订量
                    return item;
                });
                this.setData({
                    content: _Http.paging(content, res),
                    total: res.total || 0,
                    list: res.pageNumber == 1 ? list : this.data.list.concat(list)
                });
            });
        });
    },

    // 切换选中状态
    onToggleSelect(e) {
        let index = e.currentTarget.dataset.index;
        let key = `list[${index}].selected`;
        this.setData({
            [key]: !this.data.list[index].selected
        });
        this.updateSelectedCount();
    },

    // 数量变化
    onQtyChange(e) {
        let qty = e.detail;
        let index = e.currentTarget.dataset.index;
        let item = this.data.list[index];
        if (!item) return;

        let minQty = item.minimumorderqty || 1;
        let increment = item.increment || 1;

        // 校验起订量
        if (qty < minQty) {
            qty = minQty;
        }

        // 校验增量
        if (increment > 1) {
            let remainder = (qty - minQty) % increment;
            if (remainder !== 0) {
                qty = qty + (increment - remainder);
            }
        }

        let key = `list[${index}].qty`;
        this.setData({ [key]: qty });
        this.updateSelectedCount();
    },

    // 阻止事件冒泡
    stopPropagation() {},

    // 更新选中数量和合计积分
    updateSelectedCount() {
        let selected = this.data.list.filter(v => v.selected);
        let count = selected.length;
        let totalPoints = selected.reduce((sum, v) => sum + (v.points || 0) * (v.qty || 0), 0);
        this.setData({ selectedCount: count, selectedTotalPoints: totalPoints });
    },

    // 确认添加
    onConfirm() {
        let selected = this.data.list.filter(v => v.selected);
        if (selected.length === 0) {
            return wx.showToast({ title: '请选择商品', icon: 'none' });
        }

        // 调用回调（回调中会处理API调用和页面跳转）
        if (getApp().globalData.handleSelect) {
            getApp().globalData.handleSelect(selected);
        }
    }
});