import { USER_INFO } from '../../../constant'

let _debounceTimeout = null
let _throttleRunning = false

/**
 * 防抖
 * @param {Function} 执行函数
 * @param {Number} delay 延时ms
 */

export const debounce = (fn, delay = 500) => {
	clearTimeout(_debounceTimeout)
	_debounceTimeout = setTimeout(() => {
		fn()
	}, delay)
}

/**
 * 节流
 * @param {Function} 执行函数
 * @param {Number} delay 延时ms
 */

export const throttle = (fn, delay = 500) => {
	if (_throttleRunning) {
		return
	}
	_throttleRunning = true
	fn()
	setTimeout(() => {
	    _throttleRunning = false
	}, delay)
}

/**
 * toast
 */

export const msg = (title = '', param = {}) => {
	if (!title) return
	uni.showToast({
		title,
		duration: param.duration || 1500,
		mask: param.mask || false,
		icon: param.icon || 'none'
	})
}

/**
 * 检查登录
 * @return {Boolean}
 */

export const isLogin = (options = {}) => {
	const userInfo = uni.getStorageSync(USER_INFO)
	if (userInfo) {
		return true
	}
	if (options.nav !== false) {
		uni.navigateTo({
			url: '/pages/login'
		})
	}
	return false
}