import lazyLoading from './lazyLoading.js';
import Cookies from "js-cookie";

import { result } from './routerJson.js';
import { getCurrentPermissionList } from "@/api/index";

const config = require('@/config/index')

let util = {

};

util.title = function (title) {
  title = title || `${config.title} 商家后台`;
  window.document.title = title;
};

util.millsToTime = function (mills) {
  if (!mills) {
    return "";
  }
  let s = mills / 1000;
  if (s < 60) {
    return s.toFixed(0) + " 秒"
  }
  let m = s / 60;
  if (m < 60) {
    return m.toFixed(0) + " 分钟"
  }
  let h = m / 60;
  if (h < 24) {
    return h.toFixed(0) + " 小时"
  }
  let d = h / 24;
  if (d < 30) {
    return d.toFixed(0) + " 天"
  }
  let month = d / 30
  if (month < 12) {
    return month.toFixed(0) + " 个月"
  }
  let year = month / 12
  return year.toFixed(0) + " 年"

};

util.inOf = function (arr, targetArr) {
  let res = true;
  arr.forEach(item => {
    if (targetArr.indexOf(item) < 0) {
      res = false;
    }
  });
  return res;
};

util.oneOf = function (ele, targetArr) {
  if (targetArr.indexOf(ele) >= 0) {
    return true;
  } else {
    return false;
  }
};

util.getRouterObjByName = function (routers, name) {
  if (!name || !routers || !routers.length) {
    return null;
  }
  let routerObj = null;
  for (let item of routers) {
    if (item.name == name) {
      return item;
    }
    routerObj = util.getRouterObjByName(item.children, name);
    if (routerObj) {
      return routerObj;
    }
  }
  return null;
};

util.handleTitle = function (vm, item) {
  if (typeof item.title == 'object') {
    return item.title;
  } else {
    return item.title;
  }
};

util.setCurrentPath = function (vm, name) {
  let title = '';
  let isOtherRouter = false;
  vm.$store.state.app.routers.forEach(item => {
    if (item.children.length == 1) {
      if (item.children[0].name == name) {
        title = util.handleTitle(vm, item);
        if (item.name == 'otherRouter') {
          isOtherRouter = true;
        }
      }
    } else {
      item.children.forEach(child => {
        if (child.name == name) {
          title = util.handleTitle(vm, child);
          if (item.name == 'otherRouter') {
            isOtherRouter = true;
          }
        }
      });
    }
  });
  let currentPathArr = [];
  if (name == 'home_index') {
    currentPathArr = [
      {
        title: util.handleTitle(vm, util.getRouterObjByName(vm.$store.state.app.routers, 'home_index')),
        path: '',
        name: 'home_index'
      }
    ];
  } else if ((name.indexOf('_index') >= 0 || isOtherRouter) && name !== 'home_index') {
    currentPathArr = [
      {
        title: util.handleTitle(vm, util.getRouterObjByName(vm.$store.state.app.routers, 'home_index')),
        path: '/home',
        name: 'home_index'
      },
      {
        title: title,
        path: '',
        name: name
      }
    ];
  } else {
    let currentPathObj = vm.$store.state.app.routers.filter(item => {
      if (item.children.length <= 1) {
        return item.children[0].name == name;
      } else {
        let i = 0;
        let childArr = item.children;
        let len = childArr.length;
        while (i < len) {
          if (childArr[i].name == name) {
            return true;
          }
          i++;
        }
        return false;
      }
    })[0];
    if (currentPathObj.children.length <= 1 && currentPathObj.name == 'home') {
      currentPathArr = [
        {
          title: '首页',
          path: '',
          name: 'home_index'
        }
      ];
    } else if (currentPathObj.children.length <= 1 && currentPathObj.name !== 'home') {
      currentPathArr = [
        {
          title: '首页',
          path: '/home',
          name: 'home_index'
        },
        {
          title: currentPathObj.title,
          path: '',
          name: name
        }
      ];
    } else {
      let childObj = currentPathObj.children.filter((child) => {
        return child.name == name;
      })[0];
      currentPathArr = [
        {
          title: '首页',
          path: '/home',
          name: 'home_index'
        },
        {
          title: currentPathObj.title,
          path: '',
          name: currentPathObj.name
        },
        {
          title: childObj.title,
          path: currentPathObj.path + '/' + childObj.path,
          name: name
        }
      ];
    }
  }
  vm.$store.commit('setCurrentPath', currentPathArr);

  return currentPathArr;
};

util.openNewPage = function (vm, name, argu, query) {
  if (!vm.$store) {
    return;
  }
  let storeOpenedList = vm.$store.state.app.storeOpenedList;
  let openedPageLen = storeOpenedList.length;
  let i = 0;
  let tagHasOpened = false;
  while (i < openedPageLen) {
    if (name == storeOpenedList[i].name) { // 页面已经打开
      vm.$store.commit('storeOpenedList', {
        index: i,
        argu: argu,
        query: query
      });
      tagHasOpened = true;
      break;
    }
    i++;
  }
  if (!tagHasOpened) {
    let tag = vm.$store.state.app.tagsList.filter((item) => {
      if (item.children) {
        return name == item.children[0].name;
      } else {
        return name == item.name;
      }
    });
    tag = tag[0];
    if (tag) {
      tag = tag.children ? tag.children[0] : tag;
      if (argu) {
        tag.argu = argu;
      }
      if (query) {
        tag.query = query;
      }
      vm.$store.commit('increateTag', tag);
    }
  }
  vm.$store.commit('setCurrentPageName', name);
};

util.toDefaultPage = function (routers, name, route, next) {
  let len = routers.length;
  let i = 0;
  let notHandle = true;
  while (i < len) {
    if (routers[i].name == name && routers[i].children && routers[i].redirect == undefined) {
      route.replace({
        name: routers[i].children[0].name
      });
      notHandle = false;
      next();
      break;
    }
    i++;
  }
  if (notHandle) {
    next();
  }
};

// 将Csv文件解析为二维数组
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]:不是Csv文件'))
    }
  })
}

// 将二维数组转为表格数据
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
  }
}

util.initRouter = function (vm) { // 初始化路由
  const constRoutes = [];
  const otherRoutes = [];

  // 404路由需要和动态路由一起加载
  const otherRouter = [{
    path: '/*',
    name: 'error-404',
    meta: {
      title: '404-页面不存在'
    },
    component: 'error-page/404'
  }];
  // 判断用户是否登录
  let userInfo = Cookies.get('userInfoSeller')
  if (!userInfo) {
    // 未登录
    return;
  }


  // 加载菜单

  getCurrentPermissionList().then(res => {
    if (!res.success) return false;
    let menuData = res.result;
    // 格式化数据，设置 空children 为 null
    for (let i = 0; i < menuData.length; i++) {
      let t = menuData[i].children
      for (let k = 0; k < t.length; k++) {
        let tt = t[k].children;
        for (let z = 0; z < tt.length; z++) {
          tt[z].children = null
          // 给所有三级路由添加字段，显示一级菜单name，方便点击页签时的选中筛选
          tt[z].firstRouterName = menuData[i].name
        }
      }
    }
    if (!menuData) {
      return;
    }
    util.initAllMenuData(constRoutes, menuData);
    util.initRouterNode(otherRoutes, otherRouter);
    // 添加所有主界面路由
    vm.$store.commit('updateAppRouter', constRoutes.filter(item => item.children.length > 0));
    // 添加全局路由
    vm.$store.commit('updateDefaultRouter', otherRoutes);
    // 添加菜单路由
    util.initMenuData(vm, menuData);
    // 缓存数据 修改加载标识
    window.localStorage.setItem('menuData', JSON.stringify(menuData));
    vm.$store.commit('setAdded', true);
  })

};

// 添加所有顶部导航栏下的菜单路由
util.initAllMenuData = function (constRoutes, data) {

  let allMenuData = [];
  data.forEach(e => {
    if (e.level == 0) {
      e.children.forEach(item => {
        allMenuData.push(item);
      })
    }
  })
  util.initRouterNode(constRoutes, allMenuData);
}

// 生成菜单格式数据
util.initMenuData = function (vm, data) {
  const menuRoutes = [];
  let menuData = data;
  // 顶部菜单
  let navList = [];
  menuData.forEach(e => {
    let nav = {
      name: e.name,
      title: e.title,
    }
    navList.push(nav);
  })
  if (navList.length < 1) {
    return;
  }
  // 存入vuex
  vm.$store.commit('setNavList', navList);
  let currNav = window.localStorage.getItem('currNav')
  if (currNav) {
    // 读取缓存title
    for (var item of navList) {
      if (item.name == currNav) {
        vm.$store.commit('setCurrNavTitle', item.title);
        break;
      }
    }
  } else {
    // 默认第一个
    currNav = navList[0].name;
    vm.$store.commit('setCurrNavTitle', navList[0].title);
  }
  vm.$store.commit('setCurrNav', currNav);
  for (var item of menuData) {
    if (item.name == currNav) {
      // 过滤
      menuData = item.children;
      break;
    }
  }
  util.initRouterNode(menuRoutes, menuData);
  // 刷新界面菜单
  vm.$store.commit('updateMenulist', menuRoutes.filter(item => item.children.length > 0));

  let tagsList = [];
  vm.$store.state.app.routers.map((item) => {
    if (item.children.length <= 1) {
      tagsList.push(item.children[0]);
    } else {
      tagsList.push(...item.children);
    }
  });
  vm.$store.commit('setTagsList', tagsList);
};

// 生成路由节点
util.initRouterNode = function (routers, data) {  // data为所有子菜单数据

  for (var item of data) {
    let menu = Object.assign({}, item);
    menu.component = lazyLoading(menu.frontRoute);
    if (item.children && item.children.length > 0) {
      menu.children = [];
      util.initRouterNode(menu.children, item.children);
    }
    let meta = {};
    // 给页面添加标题
    meta.title = menu.title ? menu.title + " - " + config.title + "商家后台" : null;
    meta.firstRouterName = item.firstRouterName
    meta.keepAlive = menu.keepAlive ? true : false
    menu.meta = meta;

    routers.push(menu);
  }
};

export default util;
