130 lines
4.4 KiB
JavaScript
130 lines
4.4 KiB
JavaScript
const router = require("express").Router();
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const _ = require('lodash')
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const getSearchPresets = require("../models/getSearchPresets.js");
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const base64 = require("../util/base64.js")
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const sas = require("../util/scoreAndSearch.js");
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const oldToNewQuerySyntax = require("../util/oldToNewQuerySyntax.js")
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const getRegions = require('../models/getRegions.js')
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module.exports = dbConn => {
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router.get("/api/v1/search", searchHandler(dbConn));
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router.get("/api/v1/search/presets", presetHandler(dbConn));
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return router;
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};
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function presetHandler(dbConn) {
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return function (req, res) {
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getSearchPresets(dbConn).then(presets => {
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res.json(presets)
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}).catch(error => {
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// TODO error handling
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})
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}
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}
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function searchHandler(dbConn) {
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const scoreAndSearch = sas(dbConn)
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return async function (req, res) {
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let response = {}
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response.meta = {
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params: req.params,
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query: req.query,
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headers: req.headers
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}
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// SWITCH TO SUPPORT OLD AND NEW BASE64 BASED QUERY SYNTAX
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let q = req.query.q ? base64.base64ToObj(req.query.q) : req.query
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console.log('Q:', q)
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// transform syntax and seperate climate queries from price queries
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if (!req.query.q) {
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q = oldToNewQuerySyntax(q)
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}
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// CHOOSE PARAMS WHICH SHALL BE PASSED TO SCORE AND SEARCH
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let scoreQueryObj = prepareQueries(q)
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let data = await getRegions(dbConn)
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// FILTER if query contains filterString
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if (q.textfilter) {
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data = filterByString(data, q.textfilter, q.fulltext)
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}
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scoreAndSearch(data, q.from, q.to, scoreQueryObj).then(searchResults => {
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//response.data = searchResults
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const cutScores = !(_.isEmpty(scoreQueryObj.climate) && _.isEmpty(scoreQueryObj.costs) && _.isEmpty(scoreQueryObj.others))
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//console.log(cutScores);
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const queryCounter = _.keys(q).length - 2
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// FILTER NULLSCORES
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if (!_.get(q, 'showRegionsWithNullScore', false)) {
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console.log('without null scores');
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searchResults = searchResults.filter(el => !_.some(el.scores, score => _.isNaN(score.score) || _.isNil(score.score)/* || score.score <= 0*/)).filter(el => {
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console.log('scorrrrrr', el.score);
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let keepIt = true
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if (_.some(el.scores, score => score.score <= 0) && el.score < 1) keepIt = false
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return cutScores ? keepIt : true
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})//.filter(el => !_.isNaN(el.score))
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}
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// SEND RESPONSE
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if (_.isEmpty(searchResults)) {
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res.status(404).send('No regions found with your parameters')
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return
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}
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res.json(searchResults)
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}).catch(e => {
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// TODO error handling
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console.log(e)
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res.status(400).send(e.message)
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})
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}
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}
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function filterByString(searchResults, filterString, boolFulltext) {
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return _.filter(searchResults, region => {
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// console.log("filtering: filterString, boolFulltext");
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// console.log(filterString, boolFulltext);
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filterString = filterString.toLowerCase()
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let name = region.name.toLowerCase()
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let country = region.country.toLowerCase()
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if (boolFulltext) {
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let desc = region.description.toLowerCase()
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return name.includes(filterString) || country.includes(filterString) || desc.includes(filterString)
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}
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return name.includes(filterString) || country.includes(filterString)
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})
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}
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function prepareQueries(queries) {
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let q = {
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climate: {},
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costs: {},
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others: {}
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}
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// climate
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if (queries.temperature_mean_max) q.climate.temperature_mean_max = queries.temperature_mean_max
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if (queries.precipitation) q.climate.precipitation = queries.precipitation
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if (queries.rain_days) q.climate.rain_days = queries.rain_days
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if (queries.sun_hours) q.climate.sun_hours = queries.sun_hours
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// costs
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if (queries.accommodation_costs) q.costs.accommodation_costs = queries.accommodation_costs
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if (queries.food_costs) q.costs.food_costs = queries.food_costs
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if (queries.alcohol_costs) q.costs.alcohol_costs = queries.alcohol_costs
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if (queries.water_costs) q.costs.water_costs = queries.water_costs
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if (queries.local_transportation_costs) q.costs.local_transportation_costs = queries.local_transportation_costs
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if (queries.entertainment_costs) q.costs.entertainment_costs = queries.entertainment_costs
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if (queries.average_per_day_costs) q.costs.average_per_day_costs = queries.average_per_day_costs
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// others
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if (queries.avg_price_relative) q.others.avg_price_relative = queries.avg_price_relative
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return q
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}
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