purple-explorer/routes/index.js

var express = require('express')
    , router = express.Router()
    , settings = require('../lib/settings')
    , locale = require('../lib/locale')
    , db = require('../lib/database')
    , lib = require('../lib/explorer')
    , qr = require('qr-image');

function route_get_block(res, blockhash) {
  lib.get_block(blockhash, function (block) {
    if (block != 'There was an error. Check your console.') {
      if (blockhash == settings.genesis_block) {
        res.render('block', { active: 'block', block: block, confirmations: settings.confirmations, txs: 'GENESIS', showSync: db.check_show_sync_message()});
      } else {
        db.get_txs(block, function(txs) {
          if (txs.length > 0) {
            res.render('block', { active: 'block', block: block, confirmations: settings.confirmations, txs: txs, showSync: db.check_show_sync_message()});
          } else {
            db.create_txs(block, function(){
              db.get_txs(block, function(ntxs) {
                if (ntxs.length > 0) {
                  res.render('block', { active: 'block', block: block, confirmations: settings.confirmations, txs: ntxs, showSync: db.check_show_sync_message()});
                } else {
                  route_get_index(res, 'Block not found: ' + blockhash);
                }
              });
            });
          }
        });
      }
    } else {
      if (!isNaN(blockhash)) {
        var height = blockhash;
        lib.get_blockhash(height, function(hash) {
          if (hash != 'There was an error. Check your console.') {
            res.redirect('/block/' + hash);
          } else {
            route_get_index(res, 'Block not found: ' + blockhash);
          }
        });
      } else {
        route_get_index(res, 'Block not found: ' + blockhash);
      }
    }
  });
}
/* GET functions */

function route_get_tx(res, txid) {
  if (txid == settings.genesis_tx) {
    route_get_block(res, settings.genesis_block);
  } else {
    db.get_tx(txid, function(tx) {
      if (tx) {
        lib.get_blockcount(function(blockcount) {
          res.render('tx', { active: 'tx', tx: tx, confirmations: settings.confirmations, blockcount: blockcount, showSync: db.check_show_sync_message()});
        });
      }
      else {
        lib.get_rawtransaction(txid, function(rtx) {
          if (rtx.txid) {
            lib.prepare_vin(rtx, function(vin) {
              lib.prepare_vout(rtx.vout, rtx.txid, vin, ((typeof rtx.vjoinsplit === 'undefined' || rtx.vjoinsplit == null) ? [] : rtx.vjoinsplit), function(rvout, rvin) {
                lib.calculate_total(rvout, function(total){
                  if (!rtx.confirmations > 0) {
                    var utx = {
                      txid: rtx.txid,
                      vin: rvin,
                      vout: rvout,
                      total: total.toFixed(8),
                      timestamp: rtx.time,
                      blockhash: '-',
                      blockindex: -1,
                    };
                    res.render('tx', { active: 'tx', tx: utx, confirmations: settings.confirmations, blockcount:-1, showSync: db.check_show_sync_message()});
                  } else {
                    var utx = {
                      txid: rtx.txid,
                      vin: rvin,
                      vout: rvout,
                      total: total.toFixed(8),
                      timestamp: rtx.time,
                      blockhash: rtx.blockhash,
                      blockindex: rtx.blockheight,
                    };
                    lib.get_blockcount(function(blockcount) {
                      res.render('tx', { active: 'tx', tx: utx, confirmations: settings.confirmations, blockcount: blockcount, showSync: db.check_show_sync_message()});
                    });
                  }
                });
              });
            });
          } else {
            route_get_index(res, null);
          }
        });
      }
    });
  }
}

function route_get_index(res, error) {
  res.render('index', { active: 'home', error: error, showSync: db.check_show_sync_message()});
}

function route_get_address(res, hash, count) {
  db.get_address(hash, false, function(address) {
    if (address) {
      var txs = [];
      res.render('address', { active: 'address', address: address, txs: txs, showSync: db.check_show_sync_message()});
    } else {
      route_get_index(res, hash + ' not found');
    }
  });
}

function route_get_claim_form(res, hash){
  db.get_address(hash, false, function(address) {
    if (address) {
      res.render("claim_address", { active: "address", address: address, showSync: db.check_show_sync_message()});
    } else {
      route_get_index(res, hash + ' not found');
    }
  });
}

/* GET home page. */
router.get('/', function(req, res) {
  route_get_index(res, null);
});

router.get('/info', function(req, res) {
  res.render('info', { active: 'info', address: settings.address, hashes: settings.api, showSync: db.check_show_sync_message() });
});

router.get('/markets/:market', function(req, res) {
  var market = req.params['market'];
  if (settings.markets.enabled.indexOf(market) != -1) {
    db.get_market(market, function(data) {
      var exMarket = require('../lib/markets/' + market);
      res.render('./market', {
        active: 'markets',
        marketdata: {
          market_name: exMarket.market_name,
          coin: settings.markets.coin,
          exchange: settings.markets.exchange,
          data: data,
        },
        market: market,
        showSync: db.check_show_sync_message()
      });
    });
  } else {
    route_get_index(res, null);
  }
});

router.get('/richlist', function(req, res) {
  if (settings.display.richlist == true ) {
    db.get_stats(settings.coin, function (stats) {
      db.get_richlist(settings.coin, function(richlist){
        //console.log(richlist);
        if (richlist) {
          db.get_distribution(richlist, stats, function(distribution) {
            //console.log(distribution);
            res.render('richlist', {
              active: 'richlist',
              balance: richlist.balance,
              received: richlist.received,
              stats: stats,
              dista: distribution.t_1_25,
              distb: distribution.t_26_50,
              distc: distribution.t_51_75,
              distd: distribution.t_76_100,
              diste: distribution.t_101plus,
              show_dist: settings.richlist.distribution,
              show_received: settings.richlist.received,
              show_balance: settings.richlist.balance,
              showSync: db.check_show_sync_message()			  
            });
          });
        } else {
          route_get_index(res, null);
        }
      });
    });
  } else {
    route_get_index(res, null);
  }
});

router.get('/movement', function(req, res) {
  res.render('movement', {active: 'movement', flaga: settings.movement.low_flag, flagb: settings.movement.high_flag, min_amount:settings.movement.min_amount, showSync: db.check_show_sync_message()});
});

router.get('/network', function(req, res) {
  res.render('network', {active: 'network', showSync: db.check_show_sync_message()});
});

router.get('/reward', function(req, res){
  db.get_stats(settings.coin, function (stats) {
    console.log(stats);
    db.get_heavy(settings.coin, function (heavy) {
      //heavy = heavy;
      var votes = heavy.votes;
      votes.sort(function (a,b) {
        if (a.count < b.count) {
          return -1;
        } else if (a.count > b.count) {
          return 1;
        } else {
          return 0;
        }
      });

      res.render('reward', { active: 'reward', stats: stats, heavy: heavy, votes: votes, showSync: db.check_show_sync_message() });
    });
  });
});

router.get('/tx/:txid', function(req, res) {
  route_get_tx(res, req.params.txid);
});

router.get('/block/:hash', function(req, res) {
  route_get_block(res, req.params.hash);
});

router.get('/address/:hash/claim', function(req,res){
  route_get_claim_form(res, req.params.hash);
});

router.get('/address/:hash', function(req, res) {
  route_get_address(res, req.params.hash, settings.txcount);
});

router.get('/address/:hash/:count', function(req, res) {
  route_get_address(res, req.params.hash, req.params.count);
});

router.post('/search', function(req, res) {
  var query = req.body.search.trim();
  if (query.length == 64) {
    if (query == settings.genesis_tx) {
      res.redirect('/block/' + settings.genesis_block);
    } else {
      db.get_tx(query, function(tx) {
        if (tx) {
          res.redirect('/tx/' +tx.txid);
        } else {
          lib.get_block(query, function(block) {
            if (block != 'There was an error. Check your console.') {
              res.redirect('/block/' + query);
            } else {
              route_get_index(res, locale.ex_search_error + query );
            }
          });
        }
      });
    }
  } else {
    db.get_address(query, false, function(address) {
      if (address) {
        res.redirect('/address/' + address.a_id);
      } else {
        lib.get_blockhash(query, function(hash) {
          if (hash != 'There was an error. Check your console.') {
            res.redirect('/block/' + hash);
          } else {
            route_get_index(res, locale.ex_search_error + query );
          }
        });
      }
    });
  }
});

router.get('/qr/:string', function(req, res) {
  if (req.params.string) {
    var address = qr.image(req.params.string, {
      type: 'png',
      size: 4,
      margin: 1,
      ec_level: 'M'
    });
    res.type('png');
    address.pipe(res);
  }
});

router.get('/ext/summary', function(req, res) {
  lib.get_difficulty(function(difficulty) {
    difficultyHybrid = '';
    if (difficulty['proof-of-work']) {
      if (settings.index.difficulty == 'Hybrid') {
        difficultyHybrid = 'POS: ' + difficulty['proof-of-stake'];
        difficulty = 'POW: ' + difficulty['proof-of-work'];
      } else if (settings.index.difficulty == 'POW') {
        difficulty = difficulty['proof-of-work'];
      } else {
        difficulty = difficulty['proof-of-stake'];
      }
    }
    lib.get_hashrate(function(hashrate) {
      lib.get_connectioncount(function(connections){
        lib.get_masternodecount(function(masternodestotal){
          lib.get_blockcount(function(blockcount) {
            db.get_stats(settings.coin, function (stats) {
              if (hashrate == 'There was an error. Check your console.') {
                hashrate = 0;
              }
			  var masternodesoffline = Math.floor(masternodestotal.total - masternodestotal.enabled);
              res.send({ data: [{
                difficulty: difficulty,
                difficultyHybrid: difficultyHybrid,
                supply: (stats == null || stats.supply == null ? 0 : stats.supply),
                hashrate: hashrate,
                lastPrice: (stats == null || stats.last_price == null ? 0 : stats.last_price),
                connections: connections,
                masternodeCountOnline: masternodestotal.enabled,
                masternodeCountOffline: masternodesoffline,
                blockcount: blockcount
              }]});
            });
          });
        });
      });
    });
  });
});
module.exports = router;