redis-find-geo-near-location.js

const redis = require("redis"),
    client = redis.createClient();

var myLocation = { latitude : 13.617531, longitude :  100.623084 }
var taxi1 = { name : "taxi1" , latitude : 13.627457, longitude : 100.627518}
var taxi2 = { name: "taxi2" ,  latitude : 13.744965, longitude : 100.638121 }
var taxi_all = [ taxi1 , taxi2 ]

console.log('taxi_all :: ' , taxi_all);


// if you'd like to select database 3, instead of 0 (default), call
// client.select(3, function() { /* ... */ });


taxi_all.forEach( taxi => {
    client.geoadd('track', taxi.longitude,   taxi.latitude  , taxi.name , (error , data) => {
        // console.log('error :: ' , error)
        if(data === 1) return console.log('successfully geo added ! :: ' , taxi.name)
        console.log('-------------------')
    });
});


// // find taxi
console.log('---------------');
client.georadius("track", myLocation.longitude , myLocation.latitude , '100' , 'km' , 'WITHCOORD' , (error  ,data) => {
    // console.log('error :: ' , error)
    // console.log('data :: ' ,data);
    // chage array flattern
    const result =  data.reduce( (newArray , object) => {
                console.log({ name : object[0] , latitude : object[1][1] , longitude : object[1][0]} )
    } , [])

    console.log('newResult ::' , result );

})



client.on("error", function (err) {
    console.log("Error " + err);
});