import { NAV_INNER_PX } from '../../utils/navMetrics';

Component({
    options: { multipleSlots: true },
    properties: {
        title: { type: String, value: '' },
        background: { type: String, value: '' },
    },
    data: {
        statusBarHeight: 0,
        navBlockHeight: 0,
        showBackButton: false,
    },
    lifetimes: {
        attached() {
            const { statusBarHeight } = wx.getWindowInfo();
            const pages = getCurrentPages();
            this.setData({
                statusBarHeight,
                navBlockHeight: statusBarHeight + NAV_INNER_PX,
                showBackButton: pages.length > 1,
            });
        },
    },
    methods: {
        handleBack() {
            wx.navigateBack({
                fail: () => {
                    wx.switchTab({ url: '/pages/home/home' });
                },
            });
        },
    },
});