1 | var objectPath = require('object-path-immutable');
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2 | var PointerComponent = require('./components/pointer');
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3 | var validator = new (require('ajv/lib/ajv'))({
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4 | allErrors: true,
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5 | jsonPointers: true,
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6 | coerceTypes: true,
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7 | removeAdditional: 'all',
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8 | v5: true,
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9 | useDefaults: true
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10 | });
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11 |
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12 | module.exports = function(opts) {
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13 | var controls = opts.controls;
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14 |
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15 | function createElement(type) {
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16 | var control = controls[type];
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17 | if (!control) {
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18 | console.warn('Missing control ' + JSON.stringify(type));
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19 | return null;
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20 | }
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21 | arguments[0] = control;
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22 | return Element.apply(null, arguments);
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23 | }
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24 |
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25 | return function(codec, encode, decode) {
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26 | var codecs = {
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27 | 33: Affordance,
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28 | 34: ComponentPointer,
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29 | 31: createElement,
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30 | 32: Path,
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31 | 35: OpRemove,
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32 | 36: OpReplace,
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33 | 37: OpCopy,
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34 | 38: Schema,
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35 | 39: Subscription
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36 | };
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37 |
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38 | Object.keys(codecs).forEach(function(key) {
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39 | var constructor = codecs[key];
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40 | codec.addExtUnpacker(+key, function(data) {
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41 | data = decode(data);
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42 | if (!Array.isArray(data)) data = [data];
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43 | return constructor.apply(null, data);
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44 | });
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45 | });
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46 | };
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47 | };
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48 |
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49 | var slice = [].slice;
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50 |
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51 | function Affordance(ref, schema_id) {
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52 | return {
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53 | ref: ref,
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54 | schema_id: schema_id
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55 | };
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56 | }
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57 |
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58 | function ComponentPointer() {
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59 | var path = Path.apply(null, arguments);
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60 | return Element(
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61 | PointerComponent,
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62 | {path: path}
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63 | );
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64 | }
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65 |
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66 | function Element(type, props) {
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67 | if (module.hot) {
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68 |
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69 | type = require('react').createElement(type).type;
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70 | }
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71 | return {
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72 | type: type,
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73 | props: Object.assign({
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74 | children: slice.call(arguments, 2)
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75 | }, props),
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76 | $$typeof: Symbol.for('react.element')
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77 | };
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78 | };
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79 |
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80 | function Path() {
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81 | var path = slice.call(arguments);
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82 | if (path.length === 1 && path[0].length == 0) return '$root';
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83 | return path;
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84 | }
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85 |
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86 | function OpReplace(value, type) {
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87 | arguments[1] = convertPathType(type);
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88 | var path = fixChildrenPath(arguments, 1);
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89 |
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90 | patch.value = value;
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91 |
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92 | function patch(obj) {
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93 | return objectPath.set(obj || {}, path, value);
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94 | }
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95 |
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96 | return patch;
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97 | }
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98 |
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99 | function OpRemove(type) {
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100 | arguments[0] = convertPathType(type);
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101 | var path = fixChildrenPath(arguments);
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102 | return function(obj) {
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103 | return objectPath.del(obj || {}, path);
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104 | };
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105 | }
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106 |
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107 | function OpCopy(from, to) {
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108 | from[0] = convertPathType(from[0]);
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109 | to[0] = convertPathType(to[0]);
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110 | from = fixChildrenPath(from);
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111 | to = fixChildrenPath(to);
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112 |
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113 | return function(obj, init) {
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114 | var value = getAtPath(init, from);
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115 | return objectPath.set(obj || {}, to, value);
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116 | };
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117 | }
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118 |
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119 | function getAtPath(obj, path) {
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120 | for (var i = 0, parent = obj; i < path.length; i++) {
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121 | if (typeof parent !== 'object') return undefined;
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122 | parent = parent[path[i]];
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123 | }
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124 | return parent;
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125 | }
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126 |
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127 | function fixChildrenPath(path, start) {
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128 | var acc = [];
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129 | for (var i = (start || 0), key; i < path.length; i++) {
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130 | key = path[i];
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131 | if (key == 'children') acc.push('props', 'children');
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132 | else acc.push(key);
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133 | }
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134 | return acc;
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135 | }
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136 |
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137 | var pathTypes = {
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138 | 0: 'components',
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139 | 1: 'schemas'
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140 | };
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141 | function convertPathType(type) {
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142 | return pathTypes[type] || type;
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143 | }
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144 |
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145 | function Schema(schema) {
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146 | schema = schema || {};
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147 | var v = validator.compile(schema);
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148 | function validate(data) {
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149 | if (data === undefined) data = null;
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150 | data = JSON.parse(JSON.stringify(data));
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151 | var isValid = v(data);
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152 | var errors = v.errors;
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153 | if (errors) errors.forEach(function(error) {
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154 | error.dataPath = '#' + (error.dataPath || '/');
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155 | });
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156 |
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157 | return {
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158 | isValid: isValid,
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159 | errors: errors,
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160 | data: data,
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161 | schema: schema
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162 | };
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163 | };
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164 |
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165 | validate.schema = schema;
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166 |
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167 | return validate;
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168 | }
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169 |
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170 | function Subscription(id) {
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171 | return id;
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172 | }
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