初始化仓库

common/utils.js

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+import $store from '@/store/index.js';
+import pinyin from './getPingYin.js';
+class utils {
+  constructor(arg) {
+
+  }
+
+  //返回上一页
+  back(delta = 1) {
+    uni.navigateBack({
+      delta: delta
+    })
+  }
+
+  //获取好友备注，没有返回昵称
+  getNickName(friend_id, nickname) {
+    var friendIds = uni.getStorageSync("friendIds");
+    if (friendIds.length) {
+      let petName = nickname;
+      friendIds.forEach((item) => {
+        if (friend_id == item.friend_id) {
+          if (item.pet_name != undefined) {
+            petName = item.pet_name;
+          }
+        }
+      })
+      return petName;
+    } else {
+      return nickname;
+    }
+  }
+
+  getGroupById(id) {
+    let groups = uni.getStorageSync("groupList");
+    let info = [];
+    if (groups && groups.length) {
+      groups.forEach((item) => {
+        if (id == item._id) {
+          info = item;
+        }
+      })
+    }
+    return info;
+  }
+
+  getGroupAvatarList(id) {
+    var avatarList = [];
+    if (id) {
+      let groups = this.getGroupById(id);
+      if (groups.group_users != undefined && groups.group_users.length) {
+        groups.group_users.forEach((item) => {
+          avatarList.push(item.avatar)
+        })
+
+      }
+    }
+    return avatarList;
+  }
+
+  getFriendInfoById(id) {
+    let friends = $store.state.user.friendList;
+    let info = [];
+    if (friends.length) {
+      friends.forEach((item) => {
+        if (id == item._id) {
+          info = item;
+        }
+      })
+    }
+    return info;
+  }
+
+  //获取缓存头像
+  getImageCache(url) {
+    return url;
+    let key = `images_cache`;
+    let list = uni.getStorageSync(key);
+    list = list ? list : [];
+    let index = list.findIndex(item => item.url === url)
+
+    if (index !== -1) {
+      return list[index]['cache'];
+    } else {
+      var cache = {
+        url: url,
+        cache: url,
+      };
+      uni.downloadFile({
+        url: url,
+        success: (res) => {
+          if (res.statusCode === 200) {
+            cache.cache = res.tempFilePath;
+            list.push(cache);
+            uni.setStorageSync(key, list);
+          }
+        },
+        fail: (e) => {
+
+        }
+      });
+      return cache.cache;
+    }
+  }
+
+
+
+  //好友列表按首字母排序
+  sortFriendList(data) {
+    var friendList = data;
+    var letter = ["A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T",
+      "U", "V", "W", "X", "Y", "Z", "#"
+    ];
+    var indexData = [];
+    letter.forEach((letterItem, letterIndex) => {
+      var letterData = {
+        letter: letterItem,
+        data: []
+      }
+      friendList.forEach((friendListItem, friendListIndex) => {
+        var firstLetter = friendListItem.nickname.substr(0, 1);
+        var p = /[a-z]/i;
+        var b = p.test(firstLetter);
+        if (b) {
+          var firstWord = firstLetter.toUpperCase();
+        } else {
+          var firstWord = pinyin.initial(firstLetter);
+        }
+        var p2 = /[A-Z]/i;
+        var b2 = p2.test(firstWord);
+        if (!b2 && letterItem === "#") {
+          letterData.data.push(friendListItem);
+        }
+        if (b2 && letterItem === firstWord) {
+          letterData.data.push(friendListItem);
+        }
+      })
+      if (letterData.data.length > 0) {
+        indexData.push(letterData);
+      }
+    })
+    return indexData;
+  }
+  //格式化时间
+  formatChatTime(time) {
+    time = this.dateFormat("YY-mm-dd HH:MM:SS", new Date(time));
+    var date = time.toString();
+    var year = date.split("-")[0];
+    var month = date.split("-")[1];
+    var day = date.split("-")[2];
+    var d1 = new Date(year + '/' + month + '/' + day.split(" ")[0]);
+    var d3 = new Date(date.replace(/-/g, "/"));
+    var dd = new Date();
+    var y = dd.getFullYear();
+    var m = dd.getMonth() + 1;
+    var d = dd.getDate();
+    var d2 = new Date(y + '/' + m + '/' + d);
+    var iday = parseInt(d2 - d1) / 1000 / 60 / 60 / 24;
+    var hours = d3.getHours();
+    var minutes = d3.getMinutes();
+    if (minutes < 10) {
+      minutes = '0' + minutes;
+    }
+    if (hours < 10) {
+      hours = '0' + hours;
+    }
+    if (iday == 0) {
+      if (hours >= 12) {
+        return "下午 " + hours + ":" + minutes;
+      } else {
+        return "上午 " + hours + ":" + minutes;;
+      }
+    } else if (iday == 1) {
+      var dt = "";
+      if (hours >= 12) {
+        dt = "下午 " + hours + ":" + minutes;
+      } else {
+        dt = "上午 " + hours + ":" + minutes;;
+      }
+      return "昨天 " + dt;
+    } else if (iday == 2) {
+      var dt = "";
+      if (hours >= 12) {
+        dt = "下午 " + hours + ":" + minutes;
+      } else {
+        dt = "上午 " + hours + ":" + minutes;;
+      }
+      return "前天 " + dt;
+    } else {
+      return year + '/' + month + "/" + d1.getDate()
+    }
+  }
+  dateFormat(fmt, date) {
+    let ret;
+    const opt = {
+      "Y+": date.getFullYear().toString(), // 年
+      "m+": (date.getMonth() + 1).toString(), // 月
+      "d+": date.getDate().toString(), // 日
+      "H+": date.getHours().toString(), // 时
+      "M+": date.getMinutes().toString(), // 分
+      "S+": date.getSeconds().toString() // 秒
+    };
+    for (let k in opt) {
+      ret = new RegExp("(" + k + ")").exec(fmt);
+      if (ret) {
+        fmt = fmt.replace(ret[1], (ret[1].length == 1) ? (opt[k]) : (opt[k].padStart(ret[1].length, "0")))
+      };
+    };
+    return fmt;
+  }
+
+}
+export default utils