Wex.NZ

conf-sample.js

@@ -73,10 +73,10 @@ c.quadriga.secret = 'YOUR-SECRET'
 // replace with the client id used at login, as a string, not number
 c.quadriga.client_id = 'YOUR-CLIENT-ID'
 
-// to enable BTC-e trading, enter your API credentials:
-c.btce = {}
-c.btce.key = 'YOUR-API-KEY'
-c.btce.secret = 'YOUR-SECRET'
+// to enable WEX.NZ trading, enter your API credentials:
+c.wexnz = {}
+c.wexnz.key = 'YOUR-API-KEY'
+c.wexnz.secret = 'YOUR-SECRET'
 
 // to enable Gemini trading, enter your API credentials:
 c.gemini = {}

extensions/exchanges/wexnz/_codemap.js

@@ -0,0 +1,6 @@
+module.exports = {
+  _ns: 'zenbot',
+
+  'exchanges.wexnz': require('./exchange'),
+  'exchanges.list[]': '#exchanges.wexnz'
+}

extensions/exchanges/wexnz/exchange.js

@@ -0,0 +1,227 @@
+//
+// Warning - Some of the functions need testing
+// by someone in posession of a WEXNZ account
+// In particular this is the case for 
+// the buy, sell, cancelOrderand getOrderfunctions
+//
+var WEXNZ = require('wexnz')
+  , path = require('path')
+  , colors = require('colors')
+  , numbro = require('numbro')
+
+module.exports = function container (get, set, clear) {
+  var c = get('conf')
+
+  var public_client, authed_client
+
+  function publicClient () {
+    if (!public_client) {
+      public_client = new WEXNZ()
+    }
+    return public_client
+  }
+
+  function authedClient () {
+    if (!authed_client) {
+      if (!c.wexnz || !c.wexnz.key || c.wexnz.key === 'YOUR-API-KEY') {
+        throw new Error('please configure your WEX.NZ credentials in conf.js')
+      }
+      authed_client = new WEXNZ(c.wexnz.key, c.wexnz.secret)
+    }
+    return authed_client
+  }
+
+  function joinProduct (product_id) {
+    return product_id.split('-')[0] + '_' + product_id.split('-')[1]
+  }
+
+  function statusErr (err, body) {
+    if (body === null) {
+      return new Error(err)
+    } else if (!body.success) {
+      if (body.error === 'invalid api key' || body.error === 'invalid sign') {
+        console.log(err)
+        throw new Error('please correct your WEXNZ credentials in conf.js')
+      } else if (err) {
+        return new Error('\nError: ' + err)
+      }
+    } else {
+      return body
+    }
+  }
+
+
+  function retry (method, args, err) {
+    if (method !== 'getTrades') {
+      console.error(('\nWEXNZ API is down! unable to call ' + method + ', retrying in 10s').red)
+      if (err) console.error(err)
+      console.error(args.slice(0, -1))
+    }
+    setTimeout(function () {
+      exchange[method].apply(exchange, args)
+    }, 10000)
+  }
+
+  var orders = {}
+
+  var exchange = {
+    name: 'wexnz',
+    historyScan: 'false',
+    makerFee: 0.2,
+    takerFee: 0.2,
+
+    getProducts: function () {
+      return require('./products.json')
+    },
+
+    getTrades: function (opts, cb) {
+      var func_args = [].slice.call(arguments)
+      var client = publicClient()
+      var pair = joinProduct(opts.product_id).toLowerCase()
+      var args = {}
+      if (opts.from) {
+        // move cursor into the future
+        args.before = opts.from
+      }
+      else if (opts.to) {
+        // move cursor into the past
+        args.after = opts.to
+      }
+      client.trades({ pair: pair, count: 1000 }, function (err, body) {
+        if (err) return retry('getTrades', func_args, err)
+        var trades = body.map(function (trade) {
+          return {
+            trade_id: trade.tid,
+            time: trade.date * 1000,
+            //time: new Date(trade.date).getTime(),
+            size: trade.amount,
+            price: trade.price,
+            side: trade.trade_type
+          }
+        })
+        cb(null, trades)
+      })
+    },
+
+    getBalance: function (opts, cb) {
+      var args = {
+        currency: opts.currency.toLowerCase(),
+        asset: opts.asset.toLowerCase(),
+        wait: 10
+      }
+      var func_args = [].slice.call(arguments)
+      var client = authedClient()
+      client.getInfo(function (err, body) {
+        body = statusErr(err, body)
+        if (err) {
+          return retry('getBalance', func_args, err)
+        }
+        if (body.success) {
+          var balance = {asset: 0, currency: 0}
+          var funds = body.return.funds
+          balance.currency = funds[args.currency]
+          balance.asset = funds[args.asset]
+          balance.currency_hold = 0
+          balance.asset_hold = 0
+          cb(null, balance)
+        } else {
+        }
+      })
+    },
+
+    getQuote: function (opts, cb) {
+      var func_args = [].slice.call(arguments)
+      var client = publicClient()
+      var pair = joinProduct(opts.product_id).toLowerCase()
+      client.ticker({ pair: pair }, function (err, body) {
+        if (err) return retry('getQuote', func_args, err)
+        cb(null, { bid: body.ticker.buy, ask: body.ticker.sell })
+      })
+    },
+
+    cancelOrder: function (opts, cb) {
+      var func_args = [].slice.call(arguments)
+      var client = authedClient()
+      client.cancelOrder(opts.order_id, function (err, resp, body) {
+        body = statusErr(err, body)
+        // Fix me - Check return codes
+        if (body && (body.message === 'Order already done' || body.message === 'order not found')) return cb()
+        if (err) return retry('cancelOrder', func_args, err)
+        cb()
+      })
+    },
+
+    trade: function (type, opts, cb) {
+      var func_args = [].slice.call(arguments)
+      var client = authed_client()
+      var pair = joinProduct(opts.product_id)
+      /* WEXNZ has no order type?
+      if (typeof opts.post_only === 'undefined') {
+        opts.post_only = true
+      }
+      if (opts.order_type === 'taker') {
+        delete opts.price
+        delete opts.post_only
+        opts.type = 'market'
+      }
+      */
+      delete opts.order_type
+      client.trade({'pair': pair, 'type': type, 'rate': opts.price, 'amount': opts.size }, function(err, body) {
+        body = statusErr(err, body)
+        // Fix me - Check return codes from API
+        if (body && body.message === 'Insufficient funds') {
+          var order = {
+            status: 'rejected',
+            reject_reason: 'balance'
+          }
+          return cb(null, order)
+        }
+        if (err) return retry(type, func_args, err)
+        orders['~' + body.id] = body
+        cb(null,body)
+        //else console.log(err)
+      })
+    },
+
+    buy: function (opts, cb) {
+      exchange.trade('buy', opts, cb)
+    },
+
+    sell: function (opts, cb) {
+      exchange.trade('sell', opts, cb)
+    },
+
+    getOrder: function (opts, cb) {
+      var func_args = [].slice.call(arguments)
+      var client = authedClient()
+      // Fix me - Check return result
+      var orderInfo = {
+        //from: opts.order_id,
+        count: 1,
+        from_id: opts.order_id,
+        //end_id: opts.order_id,
+        pair: opts.product_id
+      }
+      client.activeOrders(orderInfo, function (err, resp, body){
+        body = statusErr(err, body)
+        if (err) return retry('getOrder', func_args, err)
+        if (resp.statusCode === 404) {
+          // order was cancelled. recall from cache
+          body = orders['~' + opts.order_id]
+          body.status = 'done'
+          body.done_reason = 'canceled'
+        }
+        // Fix me
+        body.filled_size = 0
+        body.remaining_size = resp.return[opts.order_id].amount
+        cb(null, body)
+      })
+    },
+
+    // return the property used for range querying.
+    getCursor: function (trade) {
+      return trade.trade_id
+    }
+  }
+  return exchange
+}