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// validate inputs, convert types and apply defaults
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// id generally looks like 'geoname/4163334' (type/id)
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// so, both type and id are required fields.
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function sanitize( req ){
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req.clean = req.clean || {};
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var params = req.query;
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var indeces = require('../query/indeces');
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// ensure params is a valid object
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if( Object.prototype.toString.call( params ) !== '[object Object]' ){
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params = {};
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}
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var errormessage = function(fieldname, message) {
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return {
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'error': true,
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'message': message || ('invalid param \''+ fieldname + '\': text length, must be >0')
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}
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};
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// id text
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if('string' !== typeof params.id || !params.id.length){
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return errormessage('id');
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}
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// id format
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if(params.id.indexOf('/') === -1) {
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return errormessage('id', 'invalid: must be of the format type/id for ex: \'geoname/4163334\'');
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}
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req.clean.id = params.id;
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var param = params.id.split('/');
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var param_type = param[0];
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var param_id = param[1];
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// id text
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if('string' !== typeof param_id || !param_id.length){
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return errormessage('id');
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}
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// type text
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if('string' !== typeof param_type || !param_type.length){
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return errormessage('type');
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}
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// type text must be one of the indeces
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if(indeces.indexOf(param_type) == -1){
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return errormessage('type', 'type must be one of these values - [' + indeces.join(", ") + ']');
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}
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req.clean.id = param_id;
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req.clean.type = param_type;
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return { 'error': false };
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}
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// export function
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module.exports = sanitize;
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