From 52f36e227b4fe4a759c4788553918d98266c15b5 Mon Sep 17 00:00:00 2001
From: joeuhren <46763106+joeuhren@users.noreply.github.com>
Date: Fri, 20 Nov 2020 17:32:06 -0700
Subject: [PATCH] Latest Transactions (Front page) AJAX calls for dataTables

---
 app.js          | 23 +++++++++++++++++++++++
 lib/database.js | 12 ++++++++++++
 views/index.pug | 49 +++++++++++++++++++++----------------------------
 3 files changed, 56 insertions(+), 28 deletions(-)

diff --git a/app.js b/app.js
index b6d7ed2..12164c6 100644
--- a/app.js
+++ b/app.js
@@ -181,6 +181,29 @@ app.use('/ext/getbasicstats', function(req,res){
   });
 });
 
+app.use('/ext/getlasttxsajax', function(req,res){
+  if(typeof req.query.length === 'undefined' || isNaN(req.query.length) || req.query.length > settings.index.last_txs){
+    req.query.length = settings.index.last_txs;
+  }
+  if(typeof req.query.start === 'undefined' || isNaN(req.query.start) || req.query.start < 0){
+      req.query.start = 0;
+  }
+  db.get_last_txs_ajax(req.query.start, req.query.length,function(txs, count){
+    var data = [];
+    for(i=0; i<txs.length; i++){
+      var row = [];
+      row.push(txs[i].blockindex);
+      row.push(txs[i].blockhash);
+      row.push(txs[i].txid);
+      row.push(txs[i].vout.length);
+      row.push((txs[i].total));
+      row.push(new Date((txs[i].timestamp) * 1000).toUTCString());
+      data.push(row);
+    }
+    res.json({"data":data, "draw": req.query.draw, "recordsTotal": count, "recordsFiltered": count});
+  });
+});
+
 app.use('/ext/getaddresstxsajax/:address', function(req,res){
     req.query.length = parseInt(req.query.length);
     if(isNaN(req.query.length) || req.query.length > settings.txcount){
diff --git a/lib/database.js b/lib/database.js
index 3c88491..c939dd9 100644
--- a/lib/database.js
+++ b/lib/database.js
@@ -496,6 +496,18 @@ module.exports = {
     });
   },
 
+  get_last_txs_ajax: function(start, length, cb) {
+      Tx.countDocuments({'total': {$gt: 1}}, function(err, count){
+        Tx.find({'total': {$gt: 1}}).sort({blockindex: 'desc'}).skip(Number(start)).limit(Number(length)).exec(function(err, txs){
+          if (err) {
+            return cb(err);
+          } else {
+            return cb(txs, count);
+          }
+        });
+    });
+  },
+
   get_address_txs_ajax: function(hash, start, length, cb) {
     var totalCount = 0;
     Address.findOne({a_id: hash}, function(err, addressTotalTxs) {
diff --git a/views/index.pug b/views/index.pug
index 3cd0fb5..13cae6a 100644
--- a/views/index.pug
+++ b/views/index.pug
@@ -16,7 +16,7 @@ block content
       var displayLengthMax = (lengthMenuOpts[lengthMenuOpts.length-1]);
     }
     $(document).ready(function(){
-      var stable = $('#block-table').dataTable( {  
+      var stable = $('#block-table').dataTable({
         autoWidth: true,      
         searching: true,
         ordering: false,
@@ -42,37 +42,32 @@ block content
           //{ data: 'time', width: '20%' },
         ]
       });
-      var rtable = $('#recent-table').dataTable( {  
-        autoWidth: true,      
+      var rtable = $('#recent-table').dataTable({
+        autoWidth: false,
         searching: false,
         ordering: false,
-        responsive: true,
+        responsive: false,
         lengthChange: true,
         processing: true,
+        serverSide: true,
         iDisplayLength: displayLengthMax,
         lengthMenu: lengthMenuOpts,
-        ajax: {
-          url: '/ext/getlasttxs/-0.00000001',
-          dataSrc: function ( json ) {
-            for ( var i=0;i<json.data.length; i++ ) {
-              json.data[i]['timestamp'] = new Date((json.data[i]['timestamp']) * 1000).toUTCString();
-              json.data[i]['txid'] = "<a href='/tx/" + json.data[i]['txid'] + "'>" + json.data[i]['txid'] + "</a>";
-              json.data[i]['blockindex'] = "<a href='/block/" + json.data[i]['blockhash'] + "'>" + json.data[i]['blockindex'] + "</a>";
-              var amount = (json.data[i]['total'] / 100000000).toLocaleString('en',{'minimumFractionDigits':2,'maximumFractionDigits':8,'useGrouping':true});
-              var amountParts = amount.split('.');
-              json.data[i]['total'] = amountParts[0] + '.<span class="decimal">' + amountParts[1] + '</span>';
-              json.data[i]['recipients'] = json.data[i]['vout'].length;
-            }
-            return json.data;
-          }
+        ajax: '/ext/getlasttxsajax',
+        rowCallback: function(row, data, index) {
+          var blockindex = data[0]; //variables for better readability
+          var blockhash = data[1]; //variables for better readability
+          var txhash = data[2]; //variables for better readability
+          var outputs = data[3]; //variables for better readability
+          var amount = (data[4] / 100000000).toLocaleString('en',{'minimumFractionDigits':2,'maximumFractionDigits':8,'useGrouping':true}); //variables for better readability
+          var amountParts = amount.split('.');
+          var amount = amountParts[0] + '.<span class="decimal">' + amountParts[1] + '</span>';
+          var timestamp = data[5]; //variables for better readability
+          $("td:eq(0)", row).html('<a href="/block/' + blockhash + '">' + blockindex + '</a>');
+          $("td:eq(1)", row).html('<a href="/tx/' + txhash + '">' + txhash + '</a>').addClass("d-none d-md-none d-lg-table-cell text-center");
+          $("td:eq(2)", row).html(outputs).addClass("d-none d-md-none d-lg-table-cell text-center");
+          $("td:eq(3)", row).html(amount);
+          $("td:eq(4)", row).html(timestamp);          
         },
-        columns: [
-          { data: 'blockindex', width: '8%' },
-          { data: 'txid', width: '40%' },
-          { data: 'recipients', width:'5%' },
-          { data: 'total', width: '15%' },
-          { data: 'timestamp', width: '25%' },
-        ]
       });
       setInterval( function () {
         rtable.api().ajax.reload(null, false);
@@ -103,6 +98,4 @@ block content
             th.text-center #{settings.locale.mkt_amount} (#{settings.symbol})
             th.text-center #{settings.locale.timestamp}
         tbody.text-center
-    .footer-padding
-      
-              
+    .footer-padding
\ No newline at end of file