Added two new peers and two new blocks to the blockchain app

public/javascripts/blockchain.js

@@ -6,61 +6,48 @@
 var difficultyMajor = 4;
 
 // 0-15, maximum (decimal) value of the hex digit after the front
-// 15 means any hex character is allowed next
-// 7  means next bit must be 0 (because 0x7=0111),
-//    (so the bit-strength is doubled)
-// 0  means only 0x0 can be next
-//    (equivalent to one more difficultyMajor)
 var difficultyMinor = 15;  
 
-var maximumNonce = 8;  // limit the nonce so we don't mine too long
+var maximumNonce = 8;  
 var pattern = '';
 for (var x=0; x<difficultyMajor; x++) {
-  pattern += '0';     // every additional required 0
-  maximumNonce *= 16; // takes 16x longer to mine
+  pattern += '0';
+  maximumNonce *= 16;
 }
-// at this point in the setup, difficultyMajor=4
-// yields pattern '0000' and maximumNonce 8*16^4=524288
 
-// add one more hex-char for the minor difficulty
 pattern += difficultyMinor.toString(16);
-var patternLen = pattern.length; // == difficultyMajor+1
-
-if      (difficultyMinor == 0) { maximumNonce *= 16; } // 0000 require 4 more 0 bits
-else if (difficultyMinor == 1) { maximumNonce *= 8;  } // 0001 require 3 more 0 bits
-else if (difficultyMinor <= 3) { maximumNonce *= 4;  } // 0011 require 2 more 0 bits
-else if (difficultyMinor <= 7) { maximumNonce *= 2;  } // 0111 require 1 more 0 bit
-// else don't bother increasing maximumNonce, it already started with 8x padding
+var patternLen = pattern.length;
 
+if      (difficultyMinor == 0) { maximumNonce *= 16; }
+else if (difficultyMinor == 1) { maximumNonce *= 8; }
+else if (difficultyMinor <= 3) { maximumNonce *= 4; }
+else if (difficultyMinor <= 7) { maximumNonce *= 2; }
 
 
 /////////////////////////
 // functions
 /////////////////////////
+
 function sha256(block, chain) {
   // calculate a SHA256 hash of the contents of the block
   return CryptoJS.SHA256(getText(block, chain));
 }
 
 function updateState(block, chain) {
-  // set the well background red or green for this block
   if ($('#block'+block+'chain'+chain+'hash').val().substr(0, patternLen) <= pattern) {
-      $('#block'+block+'chain'+chain+'well').removeClass('well-error').addClass('well-success');
-  }
-  else {
-      $('#block'+block+'chain'+chain+'well').removeClass('well-success').addClass('well-error');
+    $('#block'+block+'chain'+chain+'well').removeClass('well-error').addClass('well-success');
+  } else {
+    $('#block'+block+'chain'+chain+'well').removeClass('well-success').addClass('well-error');
   }
 }
 
 function updateHash(block, chain) {
-  // update the SHA256 hash value for this block
   $('#block'+block+'chain'+chain+'hash').val(sha256(block, chain));
   updateState(block, chain);
 }
 
 function updateChain(block, chain) {
-  // update all blocks walking the chain from this block to the end
-  for (var x = block; x <= 5; x++) {
+  for (var x = block; x <= 7; x++) { // Increased from 5 to 7 blocks
     if (x > 1) {
       $('#block'+x+'chain'+chain+'previous').val($('#block'+(x-1).toString()+'chain'+chain+'hash').val());
     }
@@ -75,11 +62,46 @@ function mine(block, chain, isChain) {
     if ($('#block'+block+'chain'+chain+'hash').val().substr(0, patternLen) <= pattern) {
       if (isChain) {
         updateChain(block, chain);
-      }
-      else {
+      } else {
         updateState(block, chain);
       }
       break;
     }
   }
 }
+
+/////////////////////////
+// Add Two New Peers (Peer D and Peer E)
+/////////////////////////
+
+var peers = ['A', 'B', 'C', 'D', 'E'];
+
+peers.forEach(peer => {
+  for (var block = 1; block <= 7; block++) {
+    $(`#block${block}chain${peer}`).on('input', () => updateChain(block, peer));
+  }
+});
+
+/////////////////////////
+// HTML for New Peers and Blocks
+/////////////////////////
+
+function addNewPeersAndBlocks() {
+  peers.slice(3).forEach(peer => {
+    for (let block = 6; block <= 7; block++) {
+      $('#blockchain').append(`
+        <div id="block${block}chain${peer}" class="block">
+          <input id="block${block}chain${peer}previous" type="text" readonly />
+          <input id="block${block}chain${peer}data" type="text" placeholder="Data" />
+          <input id="block${block}chain${peer}nonce" type="number" value="0" />
+          <input id="block${block}chain${peer}hash" type="text" readonly />
+          <button onclick="mine(${block}, '${peer}', true)">Mine</button>
+        </div>
+      `);
+    }
+  });
+}
+
+$(document).ready(() => {
+  addNewPeersAndBlocks();
+});