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'use strict';
var sequences = {};
var DEFAULTS = {
timestamp: function() { return Date.now(); },
datetime: function() { return (new Date).toISOString(); },
date: function() { return (new Date).toISOString().slice(0, 10); },
time: function() { return (new Date).toISOString().slice(11); },
random: function() { return Math.random(); },
randomint: function (args) {
var limit = args && args.max || 2;
return function() { return Math.floor(Math.random() * limit); };
},
seq: function (args) {
var name = args && args.name || '';
sequences[name] = sequences[name] || 0;
return function() { return sequences[name]++; };
}
};
module.exports = function defFunc(ajv) {
defFunc.definition = {
compile: function (schema, parentSchema, it) {
var funcs = {};
for (var key in schema) {
var d = schema[key];
var func = getDefault(typeof d == 'string' ? d : d.func);
funcs[key] = func.length ? func(d.args) : func;
}
return it.opts.useDefaults && !it.compositeRule
? assignDefaults
: noop;
function assignDefaults(data) {
for (var prop in schema)
if (data[prop] === undefined) data[prop] = funcs[prop]();
return true;
}
function noop() { return true; }
},
DEFAULTS: DEFAULTS,
metaSchema: {
type: 'object',
additionalProperties: {
type: ['string', 'object'],
additionalProperties: false,
required: ['func', 'args'],
properties: {
func: { type: 'string' },
args: { type: 'object' }
}
}
}
};
ajv.addKeyword('dynamicDefaults', defFunc.definition);
return ajv;
function getDefault(d) {
var def = DEFAULTS[d];
if (def) return def;
throw new Error('invalid "dynamicDefaults" keyword property value: ' + d);
}
};
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