1 | 'use strict';
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2 |
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3 | var sequences = {};
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4 |
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5 | var DEFAULTS = {
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6 | timestamp: function() { return Date.now(); },
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7 | datetime: function() { return (new Date).toISOString(); },
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8 | date: function() { return (new Date).toISOString().slice(0, 10); },
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9 | time: function() { return (new Date).toISOString().slice(11); },
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10 | random: function() { return Math.random(); },
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11 | randomint: function (args) {
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12 | var limit = args && args.max || 2;
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13 | return function() { return Math.floor(Math.random() * limit); };
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14 | },
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15 | seq: function (args) {
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16 | var name = args && args.name || '';
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17 | sequences[name] = sequences[name] || 0;
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18 | return function() { return sequences[name]++; };
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19 | }
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20 | };
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21 |
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22 | module.exports = function defFunc(ajv) {
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23 | defFunc.definition = {
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24 | compile: function (schema, parentSchema, it) {
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25 | var funcs = {};
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26 |
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27 | for (var key in schema) {
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28 | var d = schema[key];
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29 | var func = getDefault(typeof d == 'string' ? d : d.func);
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30 | funcs[key] = func.length ? func(d.args) : func;
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31 | }
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32 |
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33 | return it.opts.useDefaults && !it.compositeRule
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34 | ? assignDefaults
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35 | : noop;
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36 |
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37 | function assignDefaults(data) {
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38 | for (var prop in schema){
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39 | if (data[prop] === undefined
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40 | || (it.opts.useDefaults == 'empty'
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41 | && (data[prop] === null || data[prop] === '')))
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42 | data[prop] = funcs[prop]();
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43 | }
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44 | return true;
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45 | }
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46 |
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47 | function noop() { return true; }
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48 | },
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49 | DEFAULTS: DEFAULTS,
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50 | metaSchema: {
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51 | type: 'object',
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52 | additionalProperties: {
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53 | type: ['string', 'object'],
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54 | additionalProperties: false,
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55 | required: ['func', 'args'],
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56 | properties: {
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57 | func: { type: 'string' },
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58 | args: { type: 'object' }
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59 | }
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60 | }
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61 | }
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62 | };
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63 |
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64 | ajv.addKeyword('dynamicDefaults', defFunc.definition);
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65 | return ajv;
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66 |
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67 | function getDefault(d) {
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68 | var def = DEFAULTS[d];
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69 | if (def) return def;
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70 | throw new Error('invalid "dynamicDefaults" keyword property value: ' + d);
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71 | }
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72 | };
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