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const peliasQuery = require('pelias-query'),
defaults = require('./search_defaults'),
textParser = require('./text_parser'),
check = require('check-types');
//------------------------------
// general-purpose search query
//------------------------------
const structuredQuery = new peliasQuery.layout.StructuredFallbackQuery();
// scoring boost
structuredQuery.score( peliasQuery.view.focus_only_function( peliasQuery.view.phrase ) );
structuredQuery.score( peliasQuery.view.popularity_only_function );
structuredQuery.score( peliasQuery.view.population_only_function );
// --------------------------------
// non-scoring hard filters
structuredQuery.filter( peliasQuery.view.boundary_country );
structuredQuery.filter( peliasQuery.view.boundary_circle );
structuredQuery.filter( peliasQuery.view.boundary_rect );
structuredQuery.filter( peliasQuery.view.sources );
structuredQuery.filter( peliasQuery.view.layers );
structuredQuery.filter( peliasQuery.view.categories );
// --------------------------------
/**
map request variables to query variables for all inputs
provided by this HTTP request.
**/
function generateQuery( clean ){
const vs = new peliasQuery.Vars( defaults );
// input text
vs.var( 'input:name', clean.text );
// sources
vs.var( 'sources', clean.sources);
// layers
vs.var( 'layers', clean.layers);
// size
if( clean.querySize ) {
vs.var( 'size', clean.querySize );
}
// 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']
});
}
// 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']
});
}
// 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'
});
}
}
// boundary country
if( check.string(clean['boundary.country']) ){
vs.set({
'boundary:country': clean['boundary.country']
});
}
// run the address parser
if( clean.parsed_text ){
textParser( clean.parsed_text, vs );
}
const q = getQuery(vs);
// console.log(JSON.stringify(q.body, null, 2));
return q;
}
function getQuery(vs) {
return {
type: 'structured',
body: structuredQuery.render(vs)
};
}
module.exports = generateQuery;