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// validate inputs, convert types and apply defaults
// id generally looks like 'geoname:4163334' (type:id)
// so, both type and id are required fields.
function sanitize( req ){
req.clean = req.clean || {};
var params = req.query;
var indeces = require('../query/indeces');
var delim = ':';
// ensure params is a valid object
if( Object.prototype.toString.call( params ) !== '[object Object]' ){
params = {};
}
var errormessage = function(fieldname, message) {
return {
'error': true,
'message': message || ('invalid param \''+ fieldname + '\': text length, must be >0')
};
};
if(('string' === typeof params.id && !params.id.length) || params.id === undefined){
return errormessage('id');
}
if( params && params.id && params.id.length ){
req.clean.ids = [];
params.ids = Array.isArray(params.id) ? params.id : [params.id];
// de-dupe
params.ids = params.ids.filter(function(item, pos) {
return params.ids.indexOf(item) === pos;
});
for (var i=0; i<params.ids.length; i++) {
var thisparam = params.ids[i];
// basic format/ presence of ':'
if(thisparam.indexOf(delim) === -1) {
return errormessage(null, 'invalid: must be of the format type:id for ex: \'geoname:4163334\'');
}
var param_index = thisparam.indexOf(delim);
var type = thisparam.substring(0, param_index );
var id = thisparam.substring(param_index + 1);
// id text
if('string' !== typeof id || !id.length){
return errormessage(thisparam);
}
// type text
if('string' !== typeof type || !type.length){
return errormessage(thisparam);
}
// type text must be one of the indeces
if(indeces.indexOf(type) === -1){
return errormessage('type', type + ' is invalid. It must be one of these values - [' + indeces.join(', ') + ']');
}
req.clean.ids.push({
id: id,
type: type
});
}
}
return { 'error': false };
}
// export function
module.exports = sanitize;