/**
* 微信小程序JavaScriptSDK
*
* @version 1.1
* @date 2019-01-20
*/
var ERROR_CONF = {
KEY_ERR: 311,
KEY_ERR_MSG: 'key格式错误',
PARAM_ERR: 310,
PARAM_ERR_MSG: '请求参数信息有误',
SYSTEM_ERR: 600,
SYSTEM_ERR_MSG: '系统错误',
WX_ERR_CODE: 1000,
WX_OK_CODE: 200
};
var BASE_URL = 'https://apis.map.qq.com/ws/';
var URL_SEARCH = BASE_URL + 'place/v1/search';
var URL_SUGGESTION = BASE_URL + 'place/v1/suggestion';
var URL_GET_GEOCODER = BASE_URL + 'geocoder/v1/';
var URL_CITY_LIST = BASE_URL + 'district/v1/list';
var URL_AREA_LIST = BASE_URL + 'district/v1/getchildren';
var URL_DISTANCE = BASE_URL + 'distance/v1/';
var EARTH_RADIUS = 6378136.49;
var Utils = {
/**
* 得到终点query字符串
* @param {Array|String} 检索数据
*/
location2query(data) {
if (typeof data == 'string') {
return data;
}
var query = '';
for (var i = 0; i < data.length; i++) {
var d = data[i];
if (!!query) {
query += ';';
}
if (d.location) {
query = query + d.location.lat + ',' + d.location.lng;
}
if (d.latitude && d.longitude) {
query = query + d.latitude + ',' + d.longitude;
}
}
return query;
},
/**
* 计算角度
*/
rad(d) {
return d * Math.PI / 180.0;
},
/**
* 处理终点location数组
* @return 返回终点数组
*/
getEndLocation(location){
var to = location.split(';');
var endLocation = [];
for (var i = 0; i < to.length; i++) {
endLocation.push({
lat: parseFloat(to[i].split(',')[0]),
lng: parseFloat(to[i].split(',')[1])
})
}
return endLocation;
},
/**
* 计算两点间直线距离
* @param a 表示纬度差
* @param b 表示经度差
* @return 返回的是距离，单位m
*/
getDistance(latFrom, lngFrom, latTo, lngTo) {
var radLatFrom = this.rad(latFrom);
var radLatTo = this.rad(latTo);
var a = radLatFrom - radLatTo;
var b = this.rad(lngFrom) - this.rad(lngTo);
var distance = 2 * Math.asin(Math.sqrt(Math.pow(Math.sin(a / 2), 2) + Math.cos(radLatFrom) * Math.cos(radLatTo) * Math.pow(Math.sin(b / 2), 2)));
distance = distance * EARTH_RADIUS;
distance = Math.round(distance * 10000) / 10000;
return parseFloat(distance.toFixed(0));
},
/**
* 使用微信接口进行定位
*/
getWXLocation(success, fail, complete) {
wx.getLocation({
type: 'gcj02',
success: success,
fail: fail,
complete: complete
});
},
/**
* 获取location参数
*/
getLocationParam(location) {
if (typeof location == 'string') {
var locationArr = location.split(',');
if (locationArr.length === 2) {
location = {
latitude: location.split(',')[0],
longitude: location.split(',')[1]
};
} else {
location = {};
}
}
return location;
},
/**
* 回调函数默认处理
*/
polyfillParam(param) {
param.success = param.success || function () { };
param.fail = param.fail || function () { };
param.complete = param.complete || function () { };
},
/**
* 验证param对应的key值是否为空
*
* @param {Object} param 接口参数
* @param {String} key 对应参数的key
*/
checkParamKeyEmpty(param, key) {
if (!param[key]) {
var errconf = this.buildErrorConfig(ERROR_CONF.PARAM_ERR, ERROR_CONF.PARAM_ERR_MSG + key +'参数格式有误');
param.fail(errconf);
param.complete(errconf);
return true;
}
return false;
},
/**
* 验证参数中是否存在检索词keyword
*
* @param {Object} param 接口参数
*/
checkKeyword(param){
return !this.checkParamKeyEmpty(param, 'keyword');
},
/**
* 验证location值
*
* @param {Object} param 接口参数
*/
checkLocation(param) {
var location = this.getLocationParam(param.location);
if (!location || !location.latitude || !location.longitude) {
var errconf = this.buildErrorConfig(ERROR_CONF.PARAM_ERR, ERROR_CONF.PARAM_ERR_MSG + ' location参数格式有误');
param.fail(errconf);
param.complete(errconf);
return false;
}
return true;
},
/**
* 构造错误数据结构
* @param {Number} errCode 错误码
* @param {Number} errMsg 错误描述
*/
buildErrorConfig(errCode, errMsg) {
return {
status: errCode,
message: errMsg
};
},
/**
*
* 数据处理函数
* 根据传入参数不同处理不同数据
* @param {String} feature 功能名称
* search 地点搜索
* suggest关键词提示
* reverseGeocoder逆地址解析
* geocoder地址解析
* getCityList获取城市列表：父集
* getDistrictByCityId获取区县列表：子集
* calculateDistance距离计算
* @param {Object} param 接口参数
* @param {Object} data 数据
*/
handleData(param,data,feature){
if (feature === 'search') {
var searchResult = data.data;
var searchSimplify = [];
for (var i = 0; i < searchResult.length; i++) {
searchSimplify.push({
id: searchResult[i].id || null,
title: searchResult[i].title || null,
latitude: searchResult[i].location && searchResult[i].location.lat || null,
longitude: searchResult[i].location && searchResult[i].location.lng || null,
address: searchResult[i].address || null,
category: searchResult[i].category || null,
tel: searchResult[i].tel || null,
adcode: searchResult[i].ad_info && searchResult[i].ad_info.adcode || null,
city: searchResult[i].ad_info && searchResult[i].ad_info.city || null,
district: searchResult[i].ad_info && searchResult[i].ad_info.district || null,
province: searchResult[i].ad_info && searchResult[i].ad_info.province || null
})
}
param.success(data, {
searchResult: searchResult,
searchSimplify: searchSimplify
})
} else if (feature === 'suggest') {
var suggestResult = data.data;
var suggestSimplify = [];
for (var i = 0; i < suggestResult.length; i++) {
suggestSimplify.push({
adcode: suggestResult[i].adcode || null,
address: suggestResult[i].address || null,
category: suggestResult[i].category || null,
city: suggestResult[i].city || null,
district: suggestResult[i].district || null,
id: suggestResult[i].id || null,
latitude: suggestResult[i].location && suggestResult[i].location.lat || null,
longitude: suggestResult[i].location && suggestResult[i].location.lng || null,
province: suggestResult[i].province || null,
title: suggestResult[i].title || null,
type: suggestResult[i].type || null
})
}
param.success(data, {
suggestResult: suggestResult,
suggestSimplify: suggestSimplify
})
} else if (feature === 'reverseGeocoder') {
var reverseGeocoderResult = data.result;
var reverseGeocoderSim
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