Add new settings to save+display multi-algo data

-New settings allow reading of the hash algorithm used to mine a particular block for coins that support this feature and have the algorithm data stored in the raw block data
-An "Algorithm" column has been added to the block page and main transaction homepage when multi-algo data is enabled
-The /ext/getlasttxs api will now return the hash algorithm if reading of the multi-algo data is enabled

README.md

@@ -136,7 +136,7 @@ Table of Contents
       - **getmasternoderewardstotal:** Returns the total number of coins earned in masternode rewards for a specific address that arrived after a specific block height *\*only applicable to masternode coins*
   - **Claim Address:** Allows anyone to set custom display names for wallet addresses that they own using the **Sign Message** feature from their local wallet. Includes *bad word* filter support.
   - **Orphaned Blocks:** Displays a list of orphaned blocks with links to the next and previous "good" blocks
-  - **Block Info:** Displays block summary and list of transactions for a specific block height
+  - **Block Info:** Displays block summary and list of transactions for a specific block height along with optional hash algorithm for multi-algo coins
   - **Transaction Info:** Displays transaction summary, optional OP_RETURN value, list of input addresses and output addresses for a specific transaction
   - **Address Info:** Displays wallet address summary (balance, total sent, total received, QR code) and a list of latest transactions for a specific wallet address
 - Choose from 26 built-in themes with tweakable settings such as light and dark options to customize the look and feel of the explorer:

lib/database.js

@@ -590,10 +590,13 @@ module.exports = {
       if (tx) {
         // collection has data
         // determine if tx_type field exists
-        check_add_db_field(Tx, 'tx_type', null, function(exists) {
+        check_add_db_field(Tx, 'tx_type', null, function() {
           // determine if op_return field exists
-          check_add_db_field(Tx, 'op_return', null, function(exists) {
-            return cb(true);
+          check_add_db_field(Tx, 'op_return', null, function() {
+            // determine if algo field exists
+            check_add_db_field(Tx, 'algo', null, function() {
+              return cb(true);
+            });
           });
         });
       } else
@@ -882,16 +885,24 @@ module.exports = {
           row.push((txs[i].total / 100000000));
           row.push(txs[i].timestamp);
 
+          if (settings.block_page.multi_algorithm.show_algo == true)
+            row.push('algo:' + (txs[i].algo == null ? '' : txs[i].algo));
+
           data.push(row);
         } else {
-          data.push({
+          let data_entry = {
             blockindex: txs[i].blockindex,
             blockhash: txs[i].blockhash,
             txid: txs[i].txid,
             recipients: txs[i].vout.length,
             amount: (txs[i].total / 100000000),
             timestamp: txs[i].timestamp
-          });
+          };
+
+          if (settings.block_page.multi_algorithm.show_algo == true)
+            data_entry.algo = (txs[i].algo == null ? '' : txs[i].algo);
+
+          data.push(data_entry);
         }
       }
 
@@ -1931,7 +1942,7 @@ module.exports = {
     }
   },
 
-  save_tx: function(txid, blockheight, cb) {
+  save_tx: function(txid, blockheight, block, cb) {
     lib.get_rawtransaction(txid, function(tx) {
       if (tx && tx != 'There was an error. Check your console.') {
         lib.prepare_vin(tx, function(vin, tx_type_vin) {
@@ -1967,6 +1978,8 @@ module.exports = {
               }, function() {
                 lib.calculate_total(vout, function(total) {
                   var op_return = null;
+                  var algo = null;
+
                   // check if the op_return value should be decoded and saved
                   if (settings.transaction_page.show_op_return) {
                     // loop through vout to find the op_return value
@@ -1979,6 +1992,12 @@ module.exports = {
                     });
                   }
 
+                  // check if the algo value should be saved
+                  if (settings.block_page.multi_algorithm.show_algo) {
+                    // get the algo value
+                    algo = block[settings.block_page.multi_algorithm.key_name];
+                  }
+
                   var newTx = new Tx({
                     txid: tx.txid,
                     vin: (vin == null || vin.length == 0 ? [] : nvin),
@@ -1988,7 +2007,8 @@ module.exports = {
                     blockhash: tx.blockhash,
                     blockindex: blockheight,
                     tx_type: (tx_type_vout == null ? tx_type_vin : tx_type_vout),
-                    op_return: op_return
+                    op_return: op_return,
+                    algo: algo
                   });
 
                   newTx.save().then(() => {

lib/settings.js

@@ -498,7 +498,18 @@ exports.block_page = {
   // genesis_block: Your coins genesis block hash is used to determine the beginning of the blockchain
   //                For many bitcoin clones you can use the following cmd to get the block hash of the genesis block: coin-cli getblockhash 0
   //                NOTE: If this value is not entered correctly it will not be possible for the explorer to find or navigate to the genesis block, neither via block or transaction hash
-  "genesis_block": "00014f36c648cdbc750f7dd28487a23cd9e0b0f95f5fccc5b5d01367e3f57469"
+  "genesis_block": "00014f36c648cdbc750f7dd28487a23cd9e0b0f95f5fccc5b5d01367e3f57469",
+  // multi_algorithm: a collection of settings that can be used to show a new column with the hash algorithm that was used to mine a particular block for multi-algo coins
+  //                  If enabled, a new column will be displayed on the block page and main transaction homepage that displays the hash algorithm used to mine a particular block or tx
+  //                  NOTE: Changing any of the options in this section will require a full reindex of the blockchain data before previously synced blocks can display the algorithm
+  "multi_algorithm": {
+    // show_algo: Determine whether to read and display the hash algorithm that was used to mine a particular block for multi-algo coins
+    //            NOTE: Enabling this option will require a full reindex of the blockchain data before previously synced blocks can display the algorithm
+    "show_algo": false,
+    // key_name: The name of the key or identifier in the raw block data that determines which hash algorithm was used to mine a particular block
+    //           NOTE: Changing this option will require a full reindex of the blockchain data before previously synced blocks can display the algorithm
+    "key_name": "pow_algo"
+  }
 };
 
 // transaction_page: a collection of settings that pertain to the transaction/tx page

models/tx.js

@@ -10,7 +10,8 @@ var TxSchema = new Schema({
   blockhash: { type: String, index: true },
   blockindex: {type: Number, default: 0, index: true},
   tx_type: { type: String, default: null },
-  op_return: { type: String, default: null }
+  op_return: { type: String, default: null },
+  algo: { type: String, default: null }
 }, {id: false});
 
 TxSchema.index({total: 1, total: -1, blockindex: 1, blockindex: -1});

scripts/benchmark.js

@@ -66,7 +66,7 @@ mongoose.connect(dbString).then(() => {
                           next_tx();
                         }, timeout);
                       } else {
-                        db.save_tx(txid, block_height, function(err, tx_has_vout) {
+                        db.save_tx(txid, block_height, block, function(err, tx_has_vout) {
                           if (err)
                             console.log(err);
                           else

scripts/sync.js

@@ -120,7 +120,7 @@ function update_tx_db(coin, start, end, txes, timeout, check_only, cb) {
                     // check if this tx should be added to the local database
                     if (tx_deleted || !tx) {
                       // save the transaction to local database
-                      db.save_tx(txid, block_height, function(err, tx_has_vout) {
+                      db.save_tx(txid, block_height, block, function(err, tx_has_vout) {
                         if (err)
                           console.log(err);
                         else
@@ -673,7 +673,7 @@ function check_add_tx(txid, blockhash, tx_count, cb) {
         // check if the block was found
         if (block) {
           // save the tx to the local database
-          db.save_tx(txid, block.height, function(save_tx_err, tx_has_vout) {
+          db.save_tx(txid, block.height, block, function(save_tx_err, tx_has_vout) {
             // check if there were any save errors
             if (save_tx_err)
               console.log(save_tx_err);

settings.json.template

@@ -582,7 +582,18 @@
     // genesis_block: Your coins genesis block hash is used to determine the beginning of the blockchain
     //                For many bitcoin clones you can use the following cmd to get the block hash of the genesis block: coin-cli getblockhash 0
     //                NOTE: If this value is not entered correctly it will not be possible for the explorer to find or navigate to the genesis block, neither via block or transaction hash
-    "genesis_block": "00014f36c648cdbc750f7dd28487a23cd9e0b0f95f5fccc5b5d01367e3f57469"
+    "genesis_block": "00014f36c648cdbc750f7dd28487a23cd9e0b0f95f5fccc5b5d01367e3f57469",
+    // multi_algorithm: a collection of settings that can be used to show a new column with the hash algorithm that was used to mine a particular block for multi-algo coins
+    //                  If enabled, a new column will be displayed on the block page and main transaction homepage that displays the hash algorithm used to mine a particular block or tx
+    //                  NOTE: Changing any of the options in this section will require a full reindex of the blockchain data before previously synced blocks can display the algorithm
+    "multi_algorithm": {
+      // show_algo: Determine whether to read and display the hash algorithm that was used to mine a particular block for multi-algo coins
+      //            NOTE: Enabling this option will require a full reindex of the blockchain data before previously synced blocks can display the algorithm
+      "show_algo": false,
+      // key_name: The name of the key or identifier in the raw block data that determines which hash algorithm was used to mine a particular block
+      //           NOTE: Changing this option will require a full reindex of the blockchain data before previously synced blocks can display the algorithm
+      "key_name": "pow_algo"
+    }
   },
 
   // transaction_page: a collection of settings that pertain to the transaction/tx page

views/block.pug

@@ -75,6 +75,8 @@ block content
           tr(class=theadClasses)
             th.text-center #{settings.locale.height}
             th.text-center #{settings.locale.difficulty}
+            if settings.block_page.multi_algorithm.show_algo == true
+              th.text-center='Algorithm'
             th.text-center #{settings.locale.confirmations}
             if settings.blockchain_specific.heavycoin.enabled == true
               th.text-center Vote
@@ -91,6 +93,8 @@ block content
             td.text-center=block.height
             td.text-center #{splitDifficulty[0]}.
               span.decimal #{splitDifficulty[1]}
+            if settings.block_page.multi_algorithm.show_algo == true
+              td.text-center=block[settings.block_page.multi_algorithm.key_name]
             if block.confirmations >= confirmations
               td.text-center.table-success=block.confirmations
             else if block.confirmations < (confirmations / 2)

views/index.pug

@@ -61,20 +61,30 @@ block content
           }
         },
         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 = Number(data[4]).toLocaleString('en',{'minimumFractionDigits':2,'maximumFractionDigits':8,'useGrouping':true}); //variables for better readability
+          // variables for better readability
+          var blockindex = data[0];
+          var blockhash = data[1];
+          var txhash = data[2];
+          var outputs = data[3];
+          var amount = Number(data[4]).toLocaleString('en',{'minimumFractionDigits':2,'maximumFractionDigits':8,'useGrouping':true});
           var amountParts = amount.split('.');
           var amount = amountParts[0] + '.<span class="decimal">' + amountParts[1] + '</span>';
           var timestamp = data[5];
+          var offset = 0;
+
           $("td:eq(0)", row).html('<a href="/tx/' + txhash + '"><span class="fa-regular fa-eye" data-bs-toggle="tooltip" data-bs-placement="top" title="#{settings.locale.view_tx}"></span></a>').addClass('text-center d-table-cell d-md-none');
           $("td:eq(1)", row).html('<a href="/block/' + blockhash + '">' + blockindex + '</a>');
           $("td:eq(2)", row).html('<a href="/tx/' + txhash + '">' + txhash + '</a>').addClass("text-center breakWord d-none d-md-table-cell");
           $("td:eq(3)", row).html(outputs).addClass("text-center d-none d-sm-table-cell");
           $("td:eq(4)", row).html(amount);
-          $("td:eq(5)", row).html('<span' + (#{settings.shared_pages.date_time.enable_alt_timezone_tooltips} == true ? ' data-bs-toggle="tooltip" data-bs-placement="auto" title="' + format_unixtime(timestamp, true) + '"' : '') + '>' + format_unixtime(timestamp) + '</span>').addClass('text-center');
+
+          if (#{settings.block_page.multi_algorithm.show_algo} == true) {
+            var algo = (data.length > 6 && data[6].indexOf('algo:') == 0 ? data[6].substring('algo:'.length) : '');
+            $("td:eq(5)", row).html(algo);
+            offset = 1;
+          }
+
+          $("td:eq(" + (5 + offset) + ")", row).html('<span' + (#{settings.shared_pages.date_time.enable_alt_timezone_tooltips} == true ? ' data-bs-toggle="tooltip" data-bs-placement="auto" title="' + format_unixtime(timestamp, true) + '"' : '') + '>' + format_unixtime(timestamp) + '</span>').addClass('text-center');
         },
         fnDrawCallback: function(settings) {
           fixDataTableColumns();
@@ -169,5 +179,7 @@ block content
             th.text-center.d-none.d-sm-table-cell #{settings.locale.tx_recipients}
             th.text-center #{settings.locale.mkt_amount}
               span.small.fw-normal  (#{settings.coin.symbol})
+            if settings.block_page.multi_algorithm.show_algo == true
+              th.text-center="Algorithm"
             th.text-center #{settings.locale.timestamp}
         tbody.text-center