54 lines
1.4 KiB
JavaScript
54 lines
1.4 KiB
JavaScript
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#!/usr/bin/env node
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var geocoder = require('node-geocoder');
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var jf = require('jsonfile');
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var _ = require('underscore');
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function queryPosition(gc, address, cache, 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;
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}
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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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}
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function main() {
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var gc = geocoder.getGeocoder('google', 'http', {});
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var srcData = jf.readFileSync('data.json');
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var srcCount = srcData.length;
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var cacheData = jf.readFileSync('cache/geo.json', {throws: false}) || {};
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var destData = [];
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_.each(srcData, function(srcItem) {
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queryPosition(gc, srcItem.address, cacheData, function(geo) {
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if (geo) {
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var destItem = _.clone(srcItem);
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destItem.geo = geo;
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destData.push(destItem);
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}
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if (--srcCount === 0) {
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jf.writeFileSync('data.json', destData);
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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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