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restaurant-search/client/scripts/search.js

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/*
* Copyright (c) 2015 Alex Yatskov <alex@foosoft.net>
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* Author: Alex Yatskov <alex@foosoft.net>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
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(function(hscd) {
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'use strict';
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var _ctx = {};
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function onAdjust(name, value) {
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_ctx.query.features[name] = value;
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$.getJSON('/query', _ctx.query, function(results) {
saveSnapshot(results);
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outputSnapshot(results, true);
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});
}
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function onReady(geo) {
_ctx = {
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geo: geo,
query: {}
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};
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$('#minScore,#hintSteps,#walkingDist,#maxResults').change(onSearch);
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$('#profileDlg').on('hidden.bs.modal', onSearch);
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$('#resetStorage').click(function() {
if (confirm('Are you sure you want to reset your profile?')) {
localStorage.clear();
$('iframe').attr('src', $('iframe').attr('src'));
}
});
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window.accessReview = function(id) {
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$.getJSON('/access', {id: id, profile: getProfile()}, function(results) {
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if (results.success) {
location.replace(results.url);
}
});
};
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onSearch();
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}
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function onSearch() {
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_ctx.query = {
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features: _ctx.query.features || {},
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range: {min: -1.0, max: 1.0},
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profile: getProfile(),
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walkingDist: parseFloat($('#walkingDist').val()),
minScore: parseFloat($('#minScore').val()),
hintSteps: parseInt($('#hintSteps').val()),
maxResults: parseInt($('#maxResults').val())
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};
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if (_ctx.geo) {
_ctx.query.geo = {
latitude: _ctx.geo.coords.latitude,
longitude: _ctx.geo.coords.longitude
};
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}
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$.getJSON('/query', _ctx.query, function(results) {
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if (!_.has(_ctx, 'grapher')) {
_ctx.grapher = new grapher.Grapher({
canvas: new Snap('#svg'),
steps: _ctx.query.hintSteps,
range: _ctx.query.range,
onValueChanged: onAdjust,
displayType: $('#displayType').val(),
useLocalScale: $('#useLocalScale').is(':checked')
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});
$('#useLocalScale').click(function() {
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_ctx.grapher.setUseLocalScale($('#useLocalScale').is(':checked'));
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});
$('#useRelativeScale').click(function() {
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_ctx.grapher.setUseRelativeScale($('#useRelativeScale').is(':checked'));
});
$('#displayType').change(function() {
_ctx.grapher.setDisplayType($('#displayType').val());
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});
var columns = {};
for (var feature in results.columns) {
var column = results.columns[feature];
_ctx.query.features[feature] = column.value;
columns[feature] = {
value: column.value,
hints: column.hints
};
}
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_ctx.grapher.setColumns(columns);
}
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saveSnapshot(results);
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outputSnapshot(results, false);
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});
}
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function saveSnapshot(results) {
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window.history.pushState(results);
}
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function outputSnapshot(results, omitValues) {
var columns = {};
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for (var name in results.columns) {
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var column = results.columns[name];
columns[name] = omitValues ? _.omit(column, 'value') : column;
_ctx.query.features[name] = column.value;
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}
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_ctx.grapher.setColumns(columns);
outputMatches(results.items, results.count);
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}
function outputMatches(results, count) {
var searchResultCnt = String(results.length);
if (results.length < count) {
searchResultCnt += ' of ' + count;
}
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$('#resultCount').text(searchResultCnt);
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var template = Handlebars.compile($('#template').html());
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$('#results').empty();
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$('#results').append(template({results: results}));
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if (results.length === 0) {
$('#resultPanel').slideUp();
}
else {
$('#resultPanel').slideDown();
}
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}
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function getProfile() {
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return localStorage.profile || '{}';
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}
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window.onpopstate = function(state) {
if (state.state) {
outputSnapshot(state.state, false);
}
};
$(document).on({
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ajaxStart: function() {
$('#spinner').show();
},
ajaxStop: function() {
$('#spinner').hide();
},
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ready: function() {
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(
function(geo) { onReady(geo); },
function(err) { onReady(null); },
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{ enableHighAccuracy: true }
);
}
else {
onReady(null);
}
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}
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});
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}(window.hscd = window.hscd || {}));