Adding getpoolstatus API Method

Fixes #369

public/include/pages/api/getpoolstatus.inc.php

@@ -0,0 +1,60 @@
+<?php
+
+// Make sure we are called from index.php
+if (!defined('SECURITY')) die('Hacking attempt');
+
+// Check user token
+$user_id = $user->checkApiKey($_REQUEST['api_key']);
+
+// Fetch last block information
+$aLastBlock = $block->getLast();
+
+// Efficiency
+$aShares = $statistics->getRoundShares();
+$aShares['valid'] > 0 ? $dEfficiency = round((100 - (100 / $aShares['valid'] * $aShares['invalid'])), 2) : $dEfficiency = 0;
+
+// Fetch RPC data
+if ($bitcoin->can_connect() === true){
+  $dDifficulty = $bitcoin->getdifficulty();
+  if (is_array($dDifficulty) && array_key_exists('proof-of-work', $dDifficulty))
+    $dDifficulty = $dDifficulty['proof-of-work'];
+  $iBlock = $bitcoin->getblockcount();
+} else {
+  $dDifficulty = 1;
+  $iBlock = 0;
+}
+
+// Estimated time to find the next block
+$iCurrentPoolHashrate =  $statistics->getCurrentHashrate();
+
+// Time in seconds, not hours, using modifier in smarty to translate
+$iCurrentPoolHashrate > 0 ? $iEstTime = $dDifficulty * pow(2,32) / ($iCurrentPoolHashrate * 1000) : $iEstTime = 0;
+$iEstShares = (pow(2, 32 - $config['difficulty']) * $dDifficulty);
+
+// Time since last
+$now = new DateTime( "now" );
+if (!empty($aLastBlock)) {
+    $dTimeSinceLast = ($now->getTimestamp() - $aLastBlock['time']);
+} else {
+    $dTimeSinceLast = 0;
+}
+
+// Output JSON format
+echo json_encode(
+  array(
+    'getpoolstatus' => array(
+      'hashrate' => $iCurrentPoolHashrate,
+      'efficiency' => $dEfficiency,
+      'workers' => $worker->getCountAllActiveWorkers(),
+      'currentnetworkblock' =>  $iBlock,
+      'nextnetworkblock' =>  $iBlock + 1,
+      'lastblock' => $aLastBlock['height'],
+      'networkdiff' => $dDifficulty,
+      'esttime' => $iEstTime,
+      'estshares' => $iEstShares,
+      'timesincelast' => $dTimeSinceLast,
+    )));
+
+// Supress master template
+$supress_master = 1;
+?>

public/templates/mmcFE/statistics/pool/authenticated.tpl

@@ -49,7 +49,7 @@
     </tr>
   </tbody>
 </table>
-<li>These stats are also available in JSON format <a href="{$smarty.server.PHP_SELF}?page=api&action=getserverstatus&api_key={$GLOBAL.userdata.api_key}">HERE</a></li>
+<li>These stats are also available in JSON format <a href="{$smarty.server.PHP_SELF}?page=api&action=getpoolstatus&api_key={$GLOBAL.userdata.api_key}">HERE</a></li>
 {include file="global/block_footer.tpl"}