103 lines
3.5 KiB
JavaScript
Executable File
103 lines
3.5 KiB
JavaScript
Executable File
#!/usr/bin/env node
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/*
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* Copyright (c) 2015 Alex Yatskov <alex@foosoft.net>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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var _ = require('underscore');
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var geocoder = require('node-geocoder');
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var geolib = require('geolib');
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var jf = require('jsonfile');
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function queryPosition(gc, address, cache, sequence, callback) {
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if (_.has(cache, address)) {
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console.log('Cache lookup success for:\n\t%s', address);
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callback(cache[address]);
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return sequence;
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}
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setTimeout(function() {
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gc.geocode(address, function(err, res) {
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if (err) {
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console.log('Geocode lookup fail for: \n\t%s', address);
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callback(null);
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}
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else {
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console.log('Geocode lookup success for: \n\t%s', address);
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callback(cache[address] = res[0]);
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}
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});
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}, sequence * 200);
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return sequence + 1;
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}
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function buildAccess(reviewData, stationData, accessibility) {
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_.each(reviewData, function(reviewItem) {
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var distMin = Number.MAX_VALUE;
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var station = '';
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console.log('Computing access for: \n\t%s', reviewItem.name);
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_.each(stationData, function(stationItem, stationName) {
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var distance = geolib.getDistance(reviewItem.geo, stationItem.geo);
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if (distance < distMin) {
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station = stationName;
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distMin = distance;
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}
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});
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reviewItem.distanceToStn = distMin;
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reviewItem.closestStn = station;
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});
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}
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function main() {
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var gc = geocoder.getGeocoder('google', 'http', {});
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var sequence = 0;
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var stationData = jf.readFileSync('stations.json');
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var cacheData = jf.readFileSync('cache/geo.json', {throws: false}) || {};
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var reviewData = jf.readFileSync('data.json');
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var reviewCount = reviewData.length;
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var reviewDataDest = [];
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_.each(reviewData, function(reviewItem) {
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sequence = queryPosition(gc, reviewItem.address, cacheData, sequence, function(geo) {
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if (geo) {
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var destItem = _.clone(reviewItem);
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destItem.geo = geo;
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reviewDataDest.push(destItem);
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}
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if (--reviewCount === 0) {
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buildAccess(reviewDataDest, stationData);
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jf.writeFileSync('data.json', reviewDataDest);
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jf.writeFileSync('cache/geo.json', cacheData);
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}
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});
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});
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}
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if (require.main === module) {
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main();
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}
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