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108 lines
2.3 KiB
JavaScript

/*!
* Module requirements.
*/
'use strict';
const castArraysOfNumbers = require('./helpers').castArraysOfNumbers;
const castToNumber = require('./helpers').castToNumber;
/*!
* ignore
*/
exports.cast$geoIntersects = cast$geoIntersects;
exports.cast$near = cast$near;
exports.cast$within = cast$within;
function cast$near(val) {
const SchemaArray = require('../array');
if (Array.isArray(val)) {
castArraysOfNumbers(val, this);
return val;
}
_castMinMaxDistance(this, val);
if (val && val.$geometry) {
return cast$geometry(val, this);
}
if (!Array.isArray(val)) {
throw new TypeError('$near must be either an array or an object ' +
'with a $geometry property');
}
return SchemaArray.prototype.castForQuery.call(this, null, val);
}
function cast$geometry(val, self) {
switch (val.$geometry.type) {
case 'Polygon':
case 'LineString':
case 'Point':
castArraysOfNumbers(val.$geometry.coordinates, self);
break;
default:
// ignore unknowns
break;
}
_castMinMaxDistance(self, val);
return val;
}
function cast$within(val) {
_castMinMaxDistance(this, val);
if (val.$box || val.$polygon) {
const type = val.$box ? '$box' : '$polygon';
val[type].forEach(arr => {
if (!Array.isArray(arr)) {
const msg = 'Invalid $within $box argument. '
+ 'Expected an array, received ' + arr;
throw new TypeError(msg);
}
arr.forEach((v, i) => {
arr[i] = castToNumber.call(this, v);
});
});
} else if (val.$center || val.$centerSphere) {
const type = val.$center ? '$center' : '$centerSphere';
val[type].forEach((item, i) => {
if (Array.isArray(item)) {
item.forEach((v, j) => {
item[j] = castToNumber.call(this, v);
});
} else {
val[type][i] = castToNumber.call(this, item);
}
});
} else if (val.$geometry) {
cast$geometry(val, this);
}
return val;
}
function cast$geoIntersects(val) {
const geo = val.$geometry;
if (!geo) {
return;
}
cast$geometry(val, this);
return val;
}
function _castMinMaxDistance(self, val) {
if (val.$maxDistance) {
val.$maxDistance = castToNumber.call(self, val.$maxDistance);
}
if (val.$minDistance) {
val.$minDistance = castToNumber.call(self, val.$minDistance);
}
}