Merge flipped orderbook in getOrderbook

src/api/ledger/orderbook.js

@@ -23,9 +23,24 @@ function isSameIssue(a, b) {
   return a.currency === b.currency && a.counterparty === b.counterparty;
 }
 
-function orderFilter(issue, direction, order) {
+function directionFilter(direction, order) {
-  return isSameIssue(issue, order.specification.quantity)
+  return order.specification.direction === direction;
-    && order.specification.direction === direction;
+}
+
+function flipOrder(order) {
+  const specification = order.specification;
+  const flippedSpecification = {
+    quantity: specification.totalPrice,
+    totalPrice: specification.quantity,
+    direction: specification.direction === 'buy' ? 'sell' : 'buy'
+  };
+  const newSpecification = _.merge({}, specification, flippedSpecification);
+  return _.merge({}, order, {specification: newSpecification});
+}
+
+function alignOrder(base, order) {
+  const quantity = order.specification.quantity;
+  return isSameIssue(quantity, base) ? order : flipOrder(order);
 }
 
 function formatBidsAndAsks(orderbook, offers) {
@@ -40,13 +55,10 @@ function formatBidsAndAsks(orderbook, offers) {
   // for both bids and asks, lowest quality is closest to mid-market
   // we sort the orders so that earlier orders are closer to mid-market
   const orders = _.sortBy(offers, 'quality').map(parseOrderbookOrder);
-  const {base, counter} = orderbook;
+  const alignedOrders = orders.map(_.partial(alignOrder, orderbook.base));
-  const bids = orders.filter(_.partial(orderFilter, base, 'buy'));
+  const bids = alignedOrders.filter(_.partial(directionFilter, 'buy'));
-  const asks = orders.filter(_.partial(orderFilter, base, 'sell'));
+  const asks = alignedOrders.filter(_.partial(directionFilter, 'sell'));
-  const flippedBids = orders.filter(_.partial(orderFilter, counter, 'buy'));
+  return {bids, asks};
-  const flippedAsks = orders.filter(_.partial(orderFilter, counter, 'sell'));
-  const flipped = {bids: flippedBids, asks: flippedAsks};
-  return {bids, asks, flipped};
 }
 
 function getOrderbook(account, orderbook, options, callback) {

src/api/ledger/parse/orderbook-order.js

@@ -32,9 +32,8 @@ function parseOrderbookOrder(order: Object): Object {
   const takerPaysFunded = order.taker_pays_funded ?
       parseAmount(order.taker_pays_funded) : undefined;
   const available = utils.removeUndefined({
-    availableQuantity: direction === 'buy' ? takerPaysFunded : takerGetsFunded,
+    fundedAmount: takerGetsFunded,
-    priceOfAvailableQuantity: direction === 'buy' ?
+    priceOfFundedAmount: takerPaysFunded
-      takerGetsFunded : takerPaysFunded
   });
   const state = _.isEmpty(available) ? undefined : available;
   return utils.removeUndefined({specification, properties, state});

test/api-test.js

@@ -33,6 +33,17 @@ const getServerInfoResponse = require('./fixtures/get-server-info-response');
 const getPathsResponse = require('./fixtures/get-paths-response');
 const address = addresses.ACCOUNT;
 
+const orderbook = {
+  base: {
+    currency: 'USD',
+    counterparty: 'rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B'
+  },
+  counter: {
+    currency: 'BTC',
+    counterparty: 'rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B'
+  }
+};
+
 function checkResult(expected, done, error, response) {
   if (error) {
     done(error);
@@ -143,20 +154,47 @@ describe('RippleAPI', function() {
   });
 
   it('getOrderbook', function(done) {
-    const orderbook = {
-      base: {
-        currency: 'USD',
-        counterparty: 'rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B'
-      },
-      counter: {
-        currency: 'BTC',
-        counterparty: 'rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B'
-      }
-    };
     this.api.getOrderbook(address, orderbook, {},
       _.partial(checkResult, getOrderbookResponse, done));
   });
 
+  it('getOrderbook - sorted so that best deals come first', function(done) {
+    this.api.getOrderbook(address, orderbook, {}, (error, data) => {
+      const bidRates = data.bids.map(bid => bid.properties.makerExchangeRate);
+      const askRates = data.asks.map(ask => ask.properties.makerExchangeRate);
+      // makerExchangeRate = quality = takerPays.value/takerGets.value
+      // so the best deal for the taker is the lowest makerExchangeRate
+      // bids and asks should be sorted so that the best deals come first
+      assert.deepEqual(_.sortBy(bidRates, x => Number(x)), bidRates);
+      assert.deepEqual(_.sortBy(askRates, x => Number(x)), askRates);
+      done();
+    });
+  });
+
+  it('getOrderbook - currency & counterparty are correct', function(done) {
+    this.api.getOrderbook(address, orderbook, {}, (error, data) => {
+      const orders = _.flatten([data.bids, data.asks]);
+      _.forEach(orders, order => {
+        const quantity = order.specification.quantity;
+        const totalPrice = order.specification.totalPrice;
+        const {base, counter} = orderbook;
+        assert.strictEqual(quantity.currency, base.currency);
+        assert.strictEqual(quantity.counterparty, base.counterparty);
+        assert.strictEqual(totalPrice.currency, counter.currency);
+        assert.strictEqual(totalPrice.counterparty, counter.counterparty);
+      });
+      done();
+    });
+  });
+
+  it('getOrderbook - direction is correct for bids and asks', function(done) {
+    this.api.getOrderbook(address, orderbook, {}, (error, data) => {
+      assert(_.every(data.bids, bid => bid.specification.direction === 'buy'));
+      assert(_.every(data.asks, ask => ask.specification.direction === 'sell'));
+      done();
+    });
+  });
+
   it('getServerInfo', function(done) {
     this.api.getServerInfo(_.partial(checkResult, getServerInfoResponse, done));
   });

test/fixtures/book-offers-response.js

@@ -5,11 +5,11 @@ const _ = require('lodash');
 module.exports.requestBookOffersBidsResponse = function(request, options={}) {
   _.defaults(options, {
     gets: {
-      currency: 'BTC',
+      currency: 'USD',
       issuer: 'rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B'
     },
     pays: {
-      currency: 'USD',
+      currency: 'BTC',
       issuer: 'rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B'
     }
   });
@@ -36,7 +36,7 @@ module.exports.requestBookOffersBidsResponse = function(request, options={}) {
          },
           TakerPays: {
             currency: options.pays.currency,
-            issuer: options.gets.issuer,
+            issuer: options.pays.issuer,
             value: '10'
          },
           index: 'CE457115A4ADCC8CB351B3E35A0851E48DE16605C23E305017A9B697B156DE5A',
@@ -417,11 +417,11 @@ module.exports.requestBookOffersAsksPartialFundedResponse = function(request, op
 module.exports.requestBookOffersAsksResponse = function(request, options={}) {
   _.defaults(options, {
     pays: {
-      currency: 'BTC',
+      currency: 'USD',
       issuer: 'rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B'
     },
     gets: {
-      currency: 'USD',
+      currency: 'BTC',
       issuer: 'rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B'
     }
   });

test/fixtures/get-orderbook-response.json

@@ -5,123 +5,19 @@
         "direction": "buy",
         "quantity": {
           "currency": "USD",
-          "value": "10",
+          "value": "93.030522464522",
           "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
         },
         "totalPrice": {
           "currency": "BTC",
-          "value": "3205.1",
+          "value": "0.2849323720855092",
-          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
-        }
-      },
-      "properties": {
-        "maker": "r49y2xKuKVG2dPkNHgWQAV61cjxk8gryjQ",
-        "sequence": 434,
-        "makerExchangeRate": "0.003120027456241615"
-      }
-    },
-    {
-      "specification": {
-        "direction": "buy",
-        "quantity": {
-          "currency": "USD",
-          "value": "4.99707396683212",
-          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
-        },
-        "totalPrice": {
-          "currency": "BTC",
-          "value": "1599.063669386278",
-          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
-        }
-      },
-      "properties": {
-        "maker": "rDYCRhpahKEhCFV25xScg67Bwf4W9sTYAm",
-        "sequence": 233,
-        "makerExchangeRate": "0.003125"
-      }
-    },
-    {
-      "specification": {
-        "direction": "buy",
-        "quantity": {
-          "currency": "USD",
-          "value": "0.4499999999999999",
-          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
-        },
-        "totalPrice": {
-          "currency": "BTC",
-          "value": "143.1050962074379",
-          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
-        }
-      },
-      "properties": {
-        "maker": "raudnGKfTK23YKfnS7ixejHrqGERTYNFXk",
-        "sequence": 110104,
-        "makerExchangeRate": "0.003144542101755081"
-      },
-      "state": {
-        "availableQuantity": {
-          "currency": "USD",
-          "value": "0",
-          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
-        },
-        "priceOfAvailableQuantity": {
-          "currency": "BTC",
-          "value": "0",
-          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
-        }
-      }
-    },
-    {
-      "specification": {
-        "direction": "buy",
-        "quantity": {
-          "currency": "USD",
-          "value": "0.8",
-          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
-        },
-        "totalPrice": {
-          "currency": "BTC",
-          "value": "254.329207354604",
-          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
-        }
-      },
-      "properties": {
-        "maker": "rDVBvAQScXrGRGnzrxRrcJPeNLeLeUTAqE",
-        "sequence": 35625,
-        "makerExchangeRate": "0.003145529403882357"
-      },
-      "state": {
-        "availableQuantity": {
-          "currency": "USD",
-          "value": "0",
-          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
-        },
-        "priceOfAvailableQuantity": {
-          "currency": "BTC",
-          "value": "0",
-          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
-        }
-      }
-    },
-    {
-      "specification": {
-        "direction": "buy",
-        "quantity": {
-          "currency": "USD",
-          "value": "1.23231134568807",
-          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
-        },
-        "totalPrice": {
-          "currency": "BTC",
-          "value": "390.4979",
           "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
         }
       },
       "properties": {
         "maker": "rwBYyfufTzk77zUSKEu4MvixfarC35av1J",
-        "sequence": 387756,
+        "sequence": 386940,
-        "makerExchangeRate": "0.003155743848271834"
+        "makerExchangeRate": "326.5003614141928"
       }
     },
     {
@@ -129,19 +25,19 @@
         "direction": "buy",
         "quantity": {
           "currency": "USD",
-          "value": "0.003160328237957649",
+          "value": "1",
           "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
         },
         "totalPrice": {
           "currency": "BTC",
-          "value": "1",
+          "value": "0.00302447007930511",
           "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
         }
       },
       "properties": {
         "maker": "rwjsRktX1eguUr1pHTffyHnC4uyrvX58V1",
-        "sequence": 208927,
+        "sequence": 207855,
-        "makerExchangeRate": "0.003160328237957649"
+        "makerExchangeRate": "330.6364334177034"
       }
     },
     {
@@ -149,87 +45,13 @@
         "direction": "buy",
         "quantity": {
           "currency": "USD",
-          "value": "15",
-          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
-        },
-        "totalPrice": {
-          "currency": "BTC",
-          "value": "4725",
-          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
-        }
-      },
-      "properties": {
-        "maker": "r49y2xKuKVG2dPkNHgWQAV61cjxk8gryjQ",
-        "sequence": 429,
-        "makerExchangeRate": "0.003174603174603175"
-      }
-    },
-    {
-      "specification": {
-        "direction": "buy",
-        "quantity": {
-          "currency": "USD",
-          "value": "1.6",
-          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
-        },
-        "totalPrice": {
-          "currency": "BTC",
-          "value": "496.5429474010489",
-          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
-        }
-      },
-      "properties": {
-        "maker": "rDVBvAQScXrGRGnzrxRrcJPeNLeLeUTAqE",
-        "sequence": 35627,
-        "makerExchangeRate": "0.003222279177208227"
-      },
-      "state": {
-        "availableQuantity": {
-          "currency": "USD",
-          "value": "0",
-          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
-        },
-        "priceOfAvailableQuantity": {
-          "currency": "BTC",
-          "value": "0",
-          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
-        }
-      }
-    },
-    {
-      "specification": {
-        "direction": "buy",
-        "quantity": {
-          "currency": "USD",
-          "value": "10",
-          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
-        },
-        "totalPrice": {
-          "currency": "BTC",
-          "value": "3103",
-          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
-        }
-      },
-      "properties": {
-        "maker": "r49y2xKuKVG2dPkNHgWQAV61cjxk8gryjQ",
-        "sequence": 431,
-        "makerExchangeRate": "0.003222687721559781"
-      }
-    }
-  ],
-  "asks": [
-    {
-      "specification": {
-        "direction": "sell",
-        "quantity": {
-          "currency": "USD",
-          "value": "0.3",
-          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
-        },
-        "totalPrice": {
-          "currency": "BTC",
           "value": "99.34014894048333",
           "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
+        },
+        "totalPrice": {
+          "currency": "BTC",
+          "value": "0.3",
+          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
         }
       },
       "properties": {
@@ -240,15 +62,15 @@
     },
     {
       "specification": {
-        "direction": "sell",
+        "direction": "buy",
         "quantity": {
           "currency": "USD",
-          "value": "0.8095",
+          "value": "268.754",
           "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
         },
         "totalPrice": {
           "currency": "BTC",
-          "value": "268.754",
+          "value": "0.8095",
           "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
         }
       },
@@ -258,13 +80,13 @@
         "makerExchangeRate": "332"
       },
       "state": {
-        "availableQuantity": {
+        "fundedAmount": {
-          "currency": "USD",
+          "currency": "BTC",
           "value": "0.8078974385735969",
           "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
         },
-        "priceOfAvailableQuantity": {
+        "priceOfFundedAmount": {
-          "currency": "BTC",
+          "currency": "USD",
           "value": "268.2219496064341",
           "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
         }
@@ -272,15 +94,15 @@
     },
     {
       "specification": {
-        "direction": "sell",
+        "direction": "buy",
         "quantity": {
           "currency": "USD",
-          "value": "0.4499999999999999",
+          "value": "152.0098333185607",
           "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
         },
         "totalPrice": {
           "currency": "BTC",
-          "value": "152.0098333185607",
+          "value": "0.4499999999999999",
           "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
         }
       },
@@ -292,15 +114,15 @@
     },
     {
       "specification": {
-        "direction": "sell",
+        "direction": "buy",
         "quantity": {
           "currency": "USD",
-          "value": "0.003768001830745216",
+          "value": "1.308365894430151",
           "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
         },
         "totalPrice": {
           "currency": "BTC",
-          "value": "1.308365894430151",
+          "value": "0.003768001830745216",
           "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
         }
       },
@@ -312,15 +134,15 @@
     },
     {
       "specification": {
-        "direction": "sell",
+        "direction": "buy",
         "quantity": {
           "currency": "USD",
-          "value": "0.5",
+          "value": "176.3546101589987",
           "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
         },
         "totalPrice": {
           "currency": "BTC",
-          "value": "176.3546101589987",
+          "value": "0.5",
           "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
         }
       },
@@ -332,15 +154,15 @@
     },
     {
       "specification": {
-        "direction": "sell",
+        "direction": "buy",
         "quantity": {
           "currency": "USD",
-          "value": "0.5",
+          "value": "179.48",
           "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
         },
         "totalPrice": {
           "currency": "BTC",
-          "value": "179.48",
+          "value": "0.5",
           "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
         }
       },
@@ -350,135 +172,307 @@
         "makerExchangeRate": "358.96"
       },
       "state": {
-        "availableQuantity": {
+        "fundedAmount": {
-          "currency": "USD",
+          "currency": "BTC",
           "value": "0.499001996007984",
           "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
         },
-        "priceOfAvailableQuantity": {
+        "priceOfFundedAmount": {
-          "currency": "BTC",
+          "currency": "USD",
           "value": "179.1217564870259",
           "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
         }
       }
     },
+    {
+      "specification": {
+        "direction": "buy",
+        "quantity": {
+          "currency": "USD",
+          "value": "288.7710263794967",
+          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
+        },
+        "totalPrice": {
+          "currency": "BTC",
+          "value": "0.8",
+          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
+        }
+      },
+      "properties": {
+        "maker": "rDVBvAQScXrGRGnzrxRrcJPeNLeLeUTAqE",
+        "sequence": 35789,
+        "makerExchangeRate": "360.9637829743709"
+      }
+    },
+    {
+      "specification": {
+        "direction": "buy",
+        "quantity": {
+          "currency": "USD",
+          "value": "182.9814890090516",
+          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
+        },
+        "totalPrice": {
+          "currency": "BTC",
+          "value": "0.5",
+          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
+        }
+      },
+      "properties": {
+        "maker": "rUeCeioKJkbYhv4mRGuAbZpPcqkMCoYq6N",
+        "sequence": 5255,
+        "makerExchangeRate": "365.9629780181032"
+      },
+      "state": {
+        "fundedAmount": {
+          "currency": "BTC",
+          "value": "0.2254411038203033",
+          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
+        },
+        "priceOfFundedAmount": {
+          "currency": "USD",
+          "value": "82.50309772176658",
+          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
+        }
+      }
+    }
+  ],
+  "asks": [
+    {
+      "specification": {
+        "direction": "sell",
+        "quantity": {
+          "currency": "USD",
+          "value": "3205.1",
+          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
+        },
+        "totalPrice": {
+          "currency": "BTC",
+          "value": "10",
+          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
+        }
+      },
+      "properties": {
+        "maker": "r49y2xKuKVG2dPkNHgWQAV61cjxk8gryjQ",
+        "sequence": 434,
+        "makerExchangeRate": "0.003120027456241615"
+      }
+    },
+    {
+      "specification": {
+        "direction": "sell",
+        "quantity": {
+          "currency": "USD",
+          "value": "1599.063669386278",
+          "counterparty": "rvYAfWj5gh67oV6fW32ZzP3Aw4Eubs59B"
+        },
+        "totalPrice": {
+          "currency": "BTC",
+          "value": "4.99707396683212",
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