import Cookies from 'js-cookie'
// cookie保存的天数
import config from '@/config'
import { forEach, hasOneOf, objEqual } from '@/libs/tools'
const { title, cookieExpires, useI18n } = config

export const TOKEN_KEY = 'token'

export const setToken = (token) => {
    Cookies.set(TOKEN_KEY, token, { expires: cookieExpires || 1 })
}

export const getToken = () => {
    const token = Cookies.get(TOKEN_KEY)
    if (token) return token
    else return false
}

export const hasChild = (item) => {
    return item.children && item.children.length !== 0
}

const showThisMenuEle = (item, access) => {
    if (item.meta && item.meta.access && item.meta.access.length) {
        if (hasOneOf(item.meta.access, access)) return true
        else return false
    } else return true
}
/**
 * @param {Array} list 通过路由列表得到菜单列表
 * @returns {Array}
 */
export const getMenuByRouter = (list, access) => {
    let res = []
    forEach(list, item => {
        if (!item.meta || (item.meta && !item.meta.hideInMenu)) {
            let obj = {
                icon: (item.meta && item.meta.icon) || '',
                name: item.name,
                meta: item.meta
            }
            if ((hasChild(item) || (item.meta && item.meta.showAlways)) && showThisMenuEle(item, access)) {
                obj.children = getMenuByRouter(item.children, access)
            }
            if (item.meta && item.meta.href) obj.href = item.meta.href
            if (showThisMenuEle(item, access)) res.push(obj)
        }
    })
    return res
}

/**
 * @param {Array} routeMetched 当前路由metched
 * @returns {Array}
 */
export const getBreadCrumbList = (route, homeRoute) => {
    let homeItem = { ...homeRoute, icon: homeRoute.meta ? homeRoute.meta.icon : 'md-menu' }
    let routeMetched = route.matched
    if (routeMetched.some(item => item.name === homeRoute.name)) return [homeItem]
    let res = routeMetched.filter(item => {
        return item.meta === undefined || !item.meta.hideInBread
    }).map(item => {
        let meta = { ...item.meta }
        if (meta.title && typeof meta.title === 'function') {
            meta.__titleIsFunction__ = true
            meta.title = meta.title(route)
        }
        let obj = {
            icon: (item.meta && item.meta.icon) || '',
            name: item.name,
            meta: meta
        }
        return obj
    })
    // res = res.filter(item => {
    //   return !item.meta.hideInMenu
    // })
    return [{ ...homeItem, to: homeRoute.path }, ...res]
}

export const getRouteTitleHandled = (route) => {
    let router = { ...route }
    let meta = { ...route.meta }
    let title = ''
    if (meta.title) {
        if (typeof meta.title === 'function') {
            meta.__titleIsFunction__ = true
            title = meta.title(router)
        } else title = meta.title
    }
    meta.title = title
    router.meta = meta
    return router
}

export const showTitle = (item, vm) => {
    try {
        let { title, __titleIsFunction__ } = item.meta
        if (!title) return
        if (useI18n) {
            if (title.includes('{{') && title.includes('}}') && useI18n) title = title.replace(/({{[\s\S]+?}})/, (m, str) => str.replace(/{{([\s\S]*)}}/, (m, _) => vm.$t(_.trim())))
            else if (__titleIsFunction__) title = item.meta.title
            else title = vm.$t(item.name)
        } else title = (item.meta && item.meta.title) || item.name || ''
        return title
    } catch (e) {
        // console.log(e)
    }
}

/**
 * @description 本地存储和获取标签导航列表
 */
export const setTagNavListInLocalstorage = list => {
    localStorage.tagNaveList = JSON.stringify(list)
}
/**
 * @returns {Array} 其中的每个元素只包含路由原信息中的name, path, meta三项
 */
export const getTagNavListFromLocalstorage = () => {
    const list = localStorage.tagNaveList
    return list ? JSON.parse(list) : []
}

/**
 * @param {Array} routers 路由列表数组
 * @description 用于找到路由列表中name为home的对象
 */
export const getHomeRoute = (routers, homeName = 'home') => {
    let i = -1
    let len = routers.length
    let homeRoute = {}
    while (++i < len) {
        let item = routers[i]
        if (item.children && item.children.length) {
            let res = getHomeRoute(item.children, homeName)
            if (res.name) return res
        } else {
            if (item.name === homeName) homeRoute = item
        }
    }
    return homeRoute
}

/**
 * @param {*} list 现有标签导航列表
 * @param {*} newRoute 新添加的路由原信息对象
 * @description 如果该newRoute已经存在则不再添加
 */
export const getNewTagList = (list, newRoute) => {
    const { name, path, meta } = newRoute
    let newList = [...list]
    if (newList.findIndex(item => item.name === name) >= 0) return newList
    else newList.push({ name, path, meta })
    return newList
}

/**
 * @param {*} access 用户权限数组，如 ['super_admin', 'admin']
 * @param {*} route 路由列表
 */
const hasAccess = (access, route) => {
    if (route.meta && route.meta.access) return hasOneOf(access, route.meta.access)
    else return true
}

/**
 * 权鉴
 * @param {*} name 即将跳转的路由name
 * @param {*} access 用户权限数组
 * @param {*} routes 路由列表
 * @description 用户是否可跳转到该页
 */
export const canTurnTo = (name, access, routes) => {
    const routePermissionJudge = (list) => {
        return list.some(item => {
            if (item.children && item.children.length) {
                return routePermissionJudge(item.children)
            } else if (item.name === name) {
                return hasAccess(access, item)
            }
        })
    }

    return routePermissionJudge(routes)
}

/**
 * @param {String} url
 * @description 从URL中解析参数
 */
export const getParams = url => {
    const keyValueArr = url.split('?')[1].split('&')
    let paramObj = {}
    keyValueArr.forEach(item => {
        const keyValue = item.split('=')
        paramObj[keyValue[0]] = keyValue[1]
    })
    return paramObj
}

/**
 * @param {Array} list 标签列表
 * @param {String} name 当前关闭的标签的name
 */
export const getNextRoute = (list, route) => {
    let res = {}
    if (list.length === 2) {
        res = getHomeRoute(list)
    } else {
        const index = list.findIndex(item => routeEqual(item, route))
        if (index === list.length - 1) res = list[list.length - 2]
        else res = list[index + 1]
    }
    return res
}

/**
 * @param {Number} times 回调函数需要执行的次数
 * @param {Function} callback 回调函数
 */
export const doCustomTimes = (times, callback) => {
    let i = -1
    while (++i < times) {
        callback(i)
    }
}

/**
 * @param {Object} file 从上传组件得到的文件对象
 * @returns {Promise} resolve参数是解析后的二维数组
 * @description 从Csv文件中解析出表格，解析成二维数组
 */
export const getArrayFromFile = (file) => {
    let nameSplit = file.name.split('.')
    let format = nameSplit[nameSplit.length - 1]
    return new Promise((resolve, reject) => {
        let reader = new FileReader()
        reader.readAsText(file) // 以文本格式读取
        let arr = []
        reader.onload = function (evt) {
            let data = evt.target.result // 读到的数据
            let pasteData = data.trim()
            arr = pasteData.split((/[\n\u0085\u2028\u2029]|\r\n?/g)).map(row => {
                return row.split('\t')
            }).map(item => {
                return item[0].split(',')
            })
            if (format === 'csv') resolve(arr)
            else reject(new Error('[Format Error]:你上传的不是Csv文件'))
        }
    })
}

/**
 * @param {Array} array 表格数据二维数组
 * @returns {Object} { columns, tableData }
 * @description 从二维数组中获取表头和表格数据，将第一行作为表头，用于在iView的表格中展示数据
 */
export const getTableDataFromArray = (array) => {
    let columns = []
    let tableData = []
    if (array.length > 1) {
        let titles = array.shift()
        columns = titles.map(item => {
            return {
                title: item,
                key: item
            }
        })
        tableData = array.map(item => {
            let res = {}
            item.forEach((col, i) => {
                res[titles[i]] = col
            })
            return res
        })
    }
    return {
        columns,
        tableData
    }
}

export const findNodeUpper = (ele, tag) => {
    if (ele.parentNode) {
        if (ele.parentNode.tagName === tag.toUpperCase()) {
            return ele.parentNode
        } else {
            return findNodeUpper(ele.parentNode, tag)
        }
    }
}

export const findNodeUpperByClasses = (ele, classes) => {
    let parentNode = ele.parentNode
    if (parentNode) {
        let classList = parentNode.classList
        if (classList && classes.every(className => classList.contains(className))) {
            return parentNode
        } else {
            return findNodeUpperByClasses(parentNode, classes)
        }
    }
}

export const findNodeDownward = (ele, tag) => {
    const tagName = tag.toUpperCase()
    if (ele.childNodes.length) {
        let i = -1
        let len = ele.childNodes.length
        while (++i < len) {
            let child = ele.childNodes[i]
            if (child.tagName === tagName) return child
            else return findNodeDownward(child, tag)
        }
    }
}

export const showByAccess = (access, canViewAccess) => {
    return hasOneOf(canViewAccess, access)
}

/**
 * @description 根据name/params/query判断两个路由对象是否相等
 * @param {*} route1 路由对象
 * @param {*} route2 路由对象
 */
export const routeEqual = (route1, route2) => {
    const params1 = route1.params || {}
    const params2 = route2.params || {}
    const query1 = route1.query || {}
    const query2 = route2.query || {}
    return (route1.name === route2.name) && objEqual(params1, params2) && objEqual(query1, query2)
}

/**
 * 判断打开的标签列表里是否已存在这个新添加的路由对象
 */
export const routeHasExist = (tagNavList, routeItem) => {
    let len = tagNavList.length
    let res = false
    doCustomTimes(len, (index) => {
        if (routeEqual(tagNavList[index], routeItem)) res = true
    })
    return res
}

export const localSave = (key, value) => {
    localStorage.setItem(key, value)
}

export const localRead = (key) => {
    return localStorage.getItem(key) || ''
}

// scrollTop animation
export const scrollTop = (el, from = 0, to, duration = 500, endCallback) => {
    if (!window.requestAnimationFrame) {
        window.requestAnimationFrame = (
            window.webkitRequestAnimationFrame ||
      window.mozRequestAnimationFrame ||
      window.msRequestAnimationFrame ||
      function (callback) {
          return window.setTimeout(callback, 1000 / 60)
      }
        )
    }
    const difference = Math.abs(from - to)
    const step = Math.ceil(difference / duration * 50)

    const scroll = (start, end, step) => {
        if (start === end) {
            endCallback && endCallback()
            return
        }

        let d = (start + step > end) ? end : start + step
        if (start > end) {
            d = (start - step < end) ? end : start - step
        }

        if (el === window) {
            window.scrollTo(d, d)
        } else {
            el.scrollTop = d
        }
        window.requestAnimationFrame(() => scroll(d, end, step))
    }
    scroll(from, to, step)
}

/**
 * @description 根据当前跳转的路由设置显示在浏览器标签的title
 * @param {Object} routeItem 路由对象
 * @param {Object} vm Vue实例
 */
export const setTitle = (routeItem, vm) => {
    const handledRoute = getRouteTitleHandled(routeItem)
    const pageTitle = showTitle(handledRoute, vm)
    const resTitle = pageTitle ? `${title} - ${pageTitle}` : title
    window.document.title = resTitle
}
