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const peliasQuery = require('pelias-query');
const defaults = require('./search_defaults');
const textParser = require('./text_parser_addressit');
const check = require('check-types');
const logger = require('pelias-logger').get('api');
var placeTypes = require('../helper/placeTypes');
// region_a is also an admin field. addressit tries to detect
// region_a, in which case we use a match query specifically for it.
// but address it doesn't know about all of them so it helps to search
// against this with the other admin parts as a fallback
var adminFields = placeTypes.concat(['region_a']);
//------------------------------
// general-purpose search query
//------------------------------
var query = new peliasQuery.layout.FilteredBooleanQuery();
// mandatory matches
query.score( peliasQuery.view.ngrams, 'must' );
// scoring boost
query.score( peliasQuery.view.phrase );
query.score( peliasQuery.view.focus( peliasQuery.view.phrase ) );
query.score( peliasQuery.view.popularity( peliasQuery.view.phrase ) );
query.score( peliasQuery.view.population( peliasQuery.view.phrase ) );
// address components
query.score( peliasQuery.view.address('housenumber') );
query.score( peliasQuery.view.address('street') );
query.score( peliasQuery.view.address('postcode') );
// admin components
// country_a and region_a are left as matches here because the text-analyzer
// can sometimes detect them, in which case a query more specific than a
// multi_match is appropriate.
query.score( peliasQuery.view.admin('country_a') );
query.score( peliasQuery.view.admin('region_a') );
query.score( peliasQuery.view.admin_multi_match(adminFields, 'peliasAdmin') );
// non-scoring hard filters
query.filter( peliasQuery.view.boundary_circle );
query.filter( peliasQuery.view.boundary_rect );
query.filter( peliasQuery.view.sources );
query.filter( peliasQuery.view.layers );
query.filter( peliasQuery.view.categories );
query.filter( peliasQuery.view.boundary_country );
// --------------------------------
/**
map request variables to query variables for all inputs
provided by this HTTP request.
**/
function generateQuery( clean ){
var vs = new peliasQuery.Vars( defaults );
let logStr = '[query:search] [parser:addressit] ';
// input text
vs.var( 'input:name', clean.text );
// sources
if( check.array(clean.sources) && clean.sources.length ) {
vs.var( 'sources', clean.sources);
logStr += '[param:sources] ';
}
// layers
if( check.array(clean.layers) && clean.layers.length ) {
vs.var( 'layers', clean.layers);
logStr += '[param:layers] ';
}
// categories
if (clean.categories) {
vs.var('input:categories', clean.categories);
logStr += '[param:categories] ';
}
// size
if( clean.querySize ) {
vs.var( 'size', clean.querySize );
logStr += '[param:size] ';
}
// focus point
if( check.number(clean['focus.point.lat']) &&
check.number(clean['focus.point.lon']) ){
vs.set({
'focus:point:lat': clean['focus.point.lat'],
'focus:point:lon': clean['focus.point.lon']
});
logStr += '[param:focus_point] ';
}
// boundary rect
if( check.number(clean['boundary.rect.min_lat']) &&
check.number(clean['boundary.rect.max_lat']) &&
check.number(clean['boundary.rect.min_lon']) &&
check.number(clean['boundary.rect.max_lon']) ){
vs.set({
'boundary:rect:top': clean['boundary.rect.max_lat'],
'boundary:rect:right': clean['boundary.rect.max_lon'],
'boundary:rect:bottom': clean['boundary.rect.min_lat'],
'boundary:rect:left': clean['boundary.rect.min_lon']
});
logStr += '[param:boundary_rect] ';
}
// boundary circle
// @todo: change these to the correct request variable names
if( check.number(clean['boundary.circle.lat']) &&
check.number(clean['boundary.circle.lon']) ){
vs.set({
'boundary:circle:lat': clean['boundary.circle.lat'],
'boundary:circle:lon': clean['boundary.circle.lon']
});
if( check.number(clean['boundary.circle.radius']) ){
vs.set({
'boundary:circle:radius': Math.round( clean['boundary.circle.radius'] ) + 'km'
});
}
logStr += '[param:boundary_circle] ';
}
// boundary country
if( check.string(clean['boundary.country']) ){
vs.set({
'boundary:country': clean['boundary.country']
});
logStr += '[param:boundary_country] ';
}
// run the address parser
if( clean.parsed_text ){
textParser( clean.parsed_text, vs );
}
logger.info(logStr);
return {
type: 'original',
body: query.render(vs)
};
}
module.exports = generateQuery;