최솟값 parameter 추가

+/node_modules
+apikey
+test.js
+README.md
\ No newline at end of file

+const express = require('express');
+const app = express();
+
+
+
+const fetch = require('node-fetch');
+const fs = require('fs')
+
+
+const api_key = fs.readFileSync('apikey', 'ascii')
+console.log('apikey:',api_key)
+//const url = 'https://api.whale-alert.io/v1/status?api_key=' + api_key;
+const options = {method: 'GET', headers: {Accept: 'application/json'}};
+
+cursor = ''
+const url2 = 'https://api.whale-alert.io/v1/transactions?api_key=' + api_key;
+
+
+// fetch(url, options)
+//     .then(res => res.json())
+//     .then(json => console.log(json))
+//     .catch(err => console.error('error:' + err));
+
+function chk_param(data, query_limit, callback){
+    //query_limit (non_int) => return 0;
+    //query_limit (int) => return query_limit;
+    query_limit = parseInt(query_limit)
+    if(isNaN(query_limit)){ return callback(data, 0)} 
+    else {return callback(data, query_limit)}
+}
+function data_collector(data, limit){
+    var ret = '';
+    var str = '';
+
+    for(var i = 0; i < data.transactions.length; i++){
+        str = '#' + (i+1)+' ChainName: '+data.transactions[i].blockchain+'\tAmount: '+data.transactions[i].amount+' USD'
+        if(data.transactions[i].amount > limit){
+            //console.log(str)
+            ret += '</br>' + str;
+        }
+        else{
+            //console.log(str)
+        }
+    }
+    return ret;
+}
+app.get('/', function (req, res) {
+    fu = fetch(url2, options);
+    fu.then(res => res.json())
+    .then(json => {
+        //API usage limit
+        console.log(json)
+        if(json.result == 'error'){
+            res.send("Please try later")
+        }
+        else{
+            res.send(chk_param(json, req.query.limit, data_collector))
+        }
+    })
+    .catch(err => console.error('error:' + err))
+})
+
+var server = app.listen(23023)
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