80 lines
2.6 KiB
JavaScript
80 lines
2.6 KiB
JavaScript
var _ = require('underscore')
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, Step = require('step')
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, cartoData = require('./carto_data');
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module.exports = function(){
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var me = {
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base_url: '/tiles/:table',
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grainstore: {datasource: global.environment.postgres},
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redis: global.environment.redis
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};
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/**
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* Whitelist input and get database name & default geometry type from
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* subdomain/user metadata held in CartoDB Redis
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* @param req - standard express request obj. Should have host & table
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* @param callback
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*/
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me.req2params = function(req, callback){
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// Whitelist query parameters and attach format
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var good_query = ['sql', 'geom_type', 'cache_buster','callback', 'interactivity'];
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var bad_query = _.difference(_.keys(req.query), good_query);
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_.each(bad_query, function(key){ delete req.query[key]; });
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req.params = _.extend({}, req.params); // shuffle things as request is a strange array/object
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// bring all query values onto req.params object
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_.extend(req.params, req.query);
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// for cartodb, ensure interactivity is cartodb_id or user specified
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req.params.interactivity = req.params.interactivity || 'cartodb_id';
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// configure styles
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this.grainstore.styles = {
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point: '#' + req.params.table + " {marker-fill: #FF6600;marker-opacity: 1;marker-width: 8;marker-line-color: white;marker-line-width: 3;marker-line-opacity: 0.9;marker-placement: point;marker-type: ellipse;marker-allow-overlap: true;}",
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polygon: '#' + req.params.table + " {polygon-fill: #FF6600;polygon-opacity: 0.7;}" ,
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multipolygon: '#' + req.params.table + " {polygon-fill: #FF6600;polygon-opacity: 0.7;}"
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};
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Step(
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function getDatabase(){
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cartoData.getDatabase(req, this);
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},
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function getGeometryType(err, data){
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if (err) throw err;
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_.extend(req.params, {dbname:data});
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cartoData.getGeometryType(req, this);
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},
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function finishSetup(err, data){
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if (err) throw err;
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if (!_.isNull(data))
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_.extend(req.params, {geom_type: data});
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callback(err, req);
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}
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);
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};
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/**
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* Little helper method to get the current list of infowindow variables and return to client
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* @param req
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* @param callback
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*/
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me.getInfowindow = function(req, callback){
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var that = this;
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Step(
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function(){
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that.req2params(req, this);
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},
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function(err, data){
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if (err) throw err;
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cartoData.getInfowindow(data, callback);
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}
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);
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};
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return me;
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}(); |