@sphereon/pex
Version:
A Typescript implementation of the v1 and v2 DIF Presentation Exchange specification
94 lines • 9.06 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.PredicateRelatedFieldEvaluationHandler = void 0;
const pex_models_1 = require("@sphereon/pex-models");
const ConstraintUtils_1 = require("../../ConstraintUtils");
const Messages_1 = __importDefault(require("../../types/Messages"));
const abstractEvaluationHandler_1 = require("./abstractEvaluationHandler");
class PredicateRelatedFieldEvaluationHandler extends abstractEvaluationHandler_1.AbstractEvaluationHandler {
constructor(client) {
super(client);
}
getName() {
return 'PredicateRelatedFieldEvaluation';
}
handle(pd) {
// PresentationDefinitionV2 is the common denominator
pd.input_descriptors.forEach((inDesc, index) => {
if (inDesc.constraints) {
this.examinePredicateRelatedField(index, inDesc.constraints);
}
});
// this.updatePresentationSubmission(pdV1);
}
examinePredicateRelatedField(input_descriptor_idx, constraints) {
if (constraints === null || constraints === void 0 ? void 0 : constraints.fields) {
for (let i = 0; i < constraints.fields.length; i++) {
for (let j = 0; j < this.getResults().length; j++) {
this.examinePredicateForFilterEvaluationResult(this.getResults(), j, input_descriptor_idx, constraints, i);
}
}
}
}
examinePredicateForFilterEvaluationResult(results, resultIdx, input_descriptor_idx, constraints, fieldIdx) {
var _a;
const resultInputDescriptorIdx = this.retrieveResultInputDescriptorIdx(results[resultIdx].input_descriptor_path);
if (results[resultIdx].payload &&
results[resultIdx].payload.result &&
results[resultIdx].payload.result.path &&
results[resultIdx].evaluator === 'FilterEvaluation' &&
input_descriptor_idx === resultInputDescriptorIdx &&
constraints &&
constraints.fields &&
constraints.fields[fieldIdx] &&
constraints.fields[fieldIdx].predicate &&
constraints.fields[fieldIdx].path &&
((_a = constraints.fields[fieldIdx].path) === null || _a === void 0 ? void 0 : _a.includes(this.concatenatePath(results[resultIdx].payload.result.path)))) {
const evaluationResult = Object.assign({}, results[resultIdx].payload.result);
const resultObject = this.createResultObject(input_descriptor_idx, resultIdx, evaluationResult, results);
if (constraints.fields[fieldIdx].predicate === pex_models_1.Optionality.Required) {
results.push(resultObject);
}
else {
resultObject.payload['value'] = true;
results.push(resultObject);
}
}
}
retrieveResultInputDescriptorIdx(input_descriptor_path) {
const inputDescriptorText = '$.input_descriptors[';
const startIdx = input_descriptor_path.indexOf(inputDescriptorText);
const startWithIdx = input_descriptor_path.substring(startIdx + inputDescriptorText.length);
const endIdx = startWithIdx.indexOf(']');
const idx = startWithIdx.substring(0, endIdx);
return parseInt(idx);
}
concatenatePath(path) {
let completePath = '';
for (let i = 0; i < path.length; i++) {
if (typeof path[i] === 'number') {
completePath = completePath.substring(0, completePath.length - 1);
completePath += '[*].';
}
else {
completePath += path[i] + '.';
}
}
return completePath.substring(0, completePath.length - 1);
}
createResultObject(input_descriptor_idx, resultIdx, evaluationResult, results) {
return {
input_descriptor_path: `$.input_descriptors[${input_descriptor_idx}]`,
verifiable_credential_path: results[resultIdx].verifiable_credential_path,
evaluator: this.getName(),
status: ConstraintUtils_1.Status.INFO,
message: Messages_1.default.INPUT_CANDIDATE_IS_ELIGIBLE_FOR_PRESENTATION_SUBMISSION,
payload: evaluationResult,
};
}
}
exports.PredicateRelatedFieldEvaluationHandler = PredicateRelatedFieldEvaluationHandler;
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