jive-sdk/jive-sdk-service/generator/examples/example-stockprice/tiles/stock-price/backend/services.js

Node.js SDK for Jive Software to assist with the development of add-ons

/*jshint laxcomma:true */

var jive = require('jive-sdk')
    , q    = require('q')
    , http = require('q-io/http');

exports.task = new jive.tasks.build(function() {
    jive.tiles.findByDefinitionName('{{{TILE_NAME}}}').then(function(tiles) {
        tiles.forEach(pushUpdate);
    });
}, 60000);

function pushUpdate(tile) {
    console.log('pushing update: '+ tile.name +', '+ tile.id, tile);
    var symbol   = tile.config.symbol || 'JIVE';
    var exchange = tile.config.exchange;
    fetchData(symbol, exchange)
        .then(prepareData.bind(null, tile))
        .then(function(data) {
            jive.tiles.pushData(tile, { data: data });
        });
}

function fetchData(symbol, exchange) {
    var base = 'https://query.yahooapis.com/v1/public/yql';
    var params  = {
        format: 'json',
        diagnostics: false,
        env: 'http://datatables.org/alltables.env'
    };
    var query = 'select * from yahoo.finance.quotes where symbol="'+ symbol +'"';
    if (exchange) {
        query += ' and StockExchange like "'+ exchange +'%"';
    }
    params.q = query;
    return http.read(formatUrl(base, params)).then(JSON.parse).then(function(data) {
        console.log("Got yahoo data: ", JSON.stringify(data));
        return data.query.results.quote;
    });
}

function prepareData(tile, data) {
    var config = tile.config;
    var latestPrice = '';
    if ( data.LastTradePriceOnly ) {
        latestPrice = data.LastTradePriceOnly;
        if (config.Change && data.Change) {
            latestPrice += ' '+ data.Change;
        }
        if (config.Change && config.ChangeinPercent) {
            latestPrice += ' ('+ data.ChangeinPercent +')';
        }
        else if (config.ChangeInPercent && data.ChangeInPercent) {
            latestPrice += ' '+ data.ChangeInPercent;
        }
    }

    var fields = config.fields ?  Object.keys(config.fields).map(function(field) {
        return {
            name: formatField(field),
            value: data[field]
        };
    }).slice(0, 9) : [];

    var qualifiedSymbol = (config.exchange ? config.exchange + ':' : '') + data.symbol;
    var preparedData = {
        title: data.symbol + (config.exchange ? ' on '+ config.exchange : ''),
        contents: [{ name: data.symbol, value: latestPrice }].concat(fields),
        action: {
            text: 'Google Finance: '+ qualifiedSymbol,
            url: 'https://www.google.com/finance?q='+ qualifiedSymbol
        }
    };

    console.log("Prepared data", preparedData);

    return preparedData;
}

function formatUrl(base, params) {
    var sep = base.indexOf('?') < 0 ? '?' : '&';
    return base + sep + Object.keys(params).map(function(k) {
        return encodeURIComponent(k) +'='+ encodeURIComponent(params[k]);
    }).join('&');
}

function formatField(fieldName) {
    return fieldName
        .replace(/[A-Z]/g, function(l) {
            return ' '+ l.toLowerCase();
        })
        .replace(/days/, "day's")
        .trim();
}

exports.eventHandlers = [

    {
        'event': jive.constants.globalEventNames.NEW_INSTANCE,
        'handler' : function(theInstance){
            jive.logger.info("Caught newInstance event, trying to push now.");
            if ( theInstance['name'] == '{{{TILE_NAME}}}' ) {
                pushUpdate(theInstance);
            }
        }
    },

    {
        'event': jive.constants.globalEventNames.INSTANCE_UPDATED,
        'handler' : function(theInstance){
            jive.logger.info("Caught updateInstance event, trying to push now.");
            if ( theInstance['name'] == '{{{TILE_NAME}}}' ) {
                pushUpdate(theInstance);
            }
        }
    }

];