134 lines
4.4 KiB
JavaScript
134 lines
4.4 KiB
JavaScript
exports.newExchangeAPI = function newExchangeAPI(logger, exchangeName) {
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let MODULE_NAME = "Exchange API";
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let LOG_INFO = true;
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let apiClient;
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let thisObject = {
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initialize: initialize,
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getTicker: getTicker,
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getOpenPositions: getOpenPositions,
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getExecutedTrades: getExecutedTrades,
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putPosition: putPosition,
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movePosition: movePosition,
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getMaxDecimalPositions: getMaxDecimalPositions
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};
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return thisObject;
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function initialize(callBackFunction) {
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callBackFunction(global.DEFAULT_OK_RESPONSE);
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}
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function getMaxDecimalPositions() {
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}
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/*
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* Returns the price for a given pair of assets.
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* The object returned is an array of trades:
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* ticker = {
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* bid, Number
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* ask, Number
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* last Number
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* };
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*/
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function getTicker(pMarket, callBack) {
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try {
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logInfo("getTicker -> Entering function.");
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apiClient.getTicker(pMarket, callBack);
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} catch (err) {
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logError("getTicker -> err = " + err.message);
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callBack(global.DEFAULT_FAIL_RESPONSE);
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}
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}
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/*
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* Returns the open positions ath the exchange for a given market and user account.
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* The object returned is an array of positions
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*
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*/
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function getOpenPositions(pMarket, callBack) {
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try {
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logInfo("getOpenPositions -> Entering function. pMarket = " + JSON.stringify(pMarket));
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apiClient.getOpenPositions(pMarket, callBack);
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} catch (err) {
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logError("getOpenPositions -> Error = " + err.message);
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callBack(global.DEFAULT_FAIL_RESPONSE);
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}
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}
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/*
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* Returns the trades for a given order number.
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* The object returned is an array of positions
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*/
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function getExecutedTrades(pPositionId, callBack) {
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try {
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logInfo("getExecutedTrades -> Entering function. pPositionId = " + pPositionId);
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apiClient.getExecutedTrades(pPositionId, callBack);
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} catch (err) {
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logError("getExecutedTrades -> Error = " + err.message);
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callBack(global.DEFAULT_FAIL_RESPONSE);
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}
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}
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/*
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* Creates a new buy or sell order.
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* The orderNumber is returned. String
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*/
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function putPosition(pMarket, pType, pRate, pAmountA, pAmountB, callBack) {
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try {
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logInfo("putPosition -> Entering function.");
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let rate = truncDecimals(pRate);
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let amountA = truncDecimals(pAmountA);
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let amountB = truncDecimals(pAmountB);
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logInfo("putPosition -> pMarket = " + pMarket.assetA + "_" + pMarket.assetB);
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logInfo("putPosition -> pType = " + pType);
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logInfo("putPosition -> pRate = " + rate);
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logInfo("putPosition -> pAmountA = " + amountA);
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logInfo("putPosition -> pAmountB = " + amountB);
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if (pType === "buy") {
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apiClient.buy(pMarket.assetA, pMarket.assetB, rate, amountB, callBack);
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} else if (pType === "sell") {
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apiClient.sell(pMarket.assetA, pMarket.assetB, rate, amountB, callBack);
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} else {
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logError("putPosition -> pType must be either 'buy' or 'sell'.");
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callBack(global.DEFAULT_FAIL_RESPONSE);
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}
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} catch (err) {
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logError("putPosition -> err = " + JSON.stringify(err.stack) || err.message);
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callBack(global.DEFAULT_FAIL_RESPONSE);
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}
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}
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/*
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* Move an existing position to the new rate.
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* The new orderNumber is returned.
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*/
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function movePosition(pPosition, pNewRate, pNewAmountB, callBack) {
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try {
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logInfo("movePosition -> Entering function.");
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logInfo("movePosition -> pPosition = " + JSON.stringify(pPosition));
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logInfo("movePosition -> pNewRate = " + truncDecimals(pNewRate));
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apiClient.movePosition(pPosition, truncDecimals(pNewRate), truncDecimals(pNewAmountB), callBack);
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} catch (err) {
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logError("movePosition -> err = " + err.message);
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callBack(global.DEFAULT_FAIL_RESPONSE);
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}
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}
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function logInfo(message) {
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if (LOG_INFO === true) { logger.write(MODULE_NAME, '[INFO] ' + message) }
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}
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function logError(message) {
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logger.write(MODULE_NAME, '[ERROR] ' + message)
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}
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};
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