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/**
* Match a Metadata instance against rules using Validate.js for validation.
* @param {InstanceMetadata} metadataInstance Metadata instance object
* @param {Array} rules Array of MatchingRules instances (StudyMatchingRule|SeriesMatchingRule|ImageMatchingRule) for the match
* @param {object} options is an object containing additional information
* @param {object[]} options.studies is a list of all the studies
* @param {object[]} options.displaySets is a list of the display sets
* @return {Object} Matching Object with score and details (which rule passed or failed)
*/
const match = (metadataInstance, rules = [], customAttributeRetrievalCallbacks, options) => {
const validateOptions = {
format: 'grouped',
};
const details = {
passed: [],
failed: [],
};
const readValues = {};
let requiredFailed = false;
let score = 0;
// Allow for matching against current or prior specifically
const prior = options?.studies?.[1];
const current = options?.studies?.[0];
const instance = metadataInstance.instances?.[0];
const fromSrc = {
prior,
current,
instance,
...options,
options,
metadataInstance,
};
rules.forEach(rule => {
const { attribute, from = 'metadataInstance' } = rule;
// Do not use the custom attribute from the metadataInstance since it is subject to change
if (customAttributeRetrievalCallbacks.hasOwnProperty(attribute)) {
readValues[attribute] = customAttributeRetrievalCallbacks[attribute].callback.call(
rule,
metadataInstance,
options
);
} else {
readValues[attribute] = fromSrc[from]?.[attribute] ?? instance?.[attribute];
}
// handle cases where the constraint is also a custom attribute
const resolvedConstraint = resolveConstraintAttributes(
readValues,
rule.constraint,
customAttributeRetrievalCallbacks,
fromSrc
);
// Format the constraint as required by Validate.js
const testConstraint = {
[attribute]: resolvedConstraint,
};
// Create a single attribute object to be validated, since metadataInstance is an
// instance of Metadata (StudyMetadata, SeriesMetadata or InstanceMetadata)
const attributeMap = {
[attribute]: readValues[attribute],
};
// Use Validate.js to evaluate the constraints on the specified metadataInstance
let errorMessages;
try {
errorMessages = validate(attributeMap, testConstraint, [validateOptions]);
} catch (e) {
errorMessages = ['Something went wrong during validation.', e];
}
// TODO: move to a logger
// console.log(
// 'Test',
// `${from}.${attribute}`,
// readValues[attribute],
// JSON.stringify(rule.constraint),
// !errorMessages
// );
if (!errorMessages) {
// If no errorMessages were returned, then validation passed.
// Add the rule's weight to the total score
score += parseInt(rule.weight || 1, 10);
// Log that this rule passed in the matching details object
details.passed.push({
rule,
});
} else {
// If errorMessages were present, then validation failed
// If the rule that failed validation was Required, then
// mark that a required Rule has failed
if (rule.required) {
requiredFailed = true;
}
// Log that this rule failed in the matching details object
// and include any error messages
details.failed.push({
rule,
errorMessages,
});
}
});
// If a required Rule has failed Validation, set the matching score to zero
if (requiredFailed) {
score = 0;
}
return {
score,
details,
requiredFailed,
};
};
// New helper function to resolve constraint attributes
const resolveConstraintAttributes = (
readValues,
constraint,
customAttributeRetrievalCallbacks,
fromSrc
) => {
Iif (typeof constraint !== 'object' || constraint === null) {
return constraint;
}
const resolvedConstraint = {};
Object.entries(constraint).forEach(([key, value]) => {
Iif (typeof value === 'object' && Object.keys(value).length > 0 && 'attribute' in value) {
const attributeName = value.attribute;
const attributeFrom = value.from ?? 'metadataInstance';
if (customAttributeRetrievalCallbacks.hasOwnProperty(attributeName)) {
const value = customAttributeRetrievalCallbacks[attributeName].callback.call(
null,
fromSrc[attributeFrom],
fromSrc.options
);
resolvedConstraint[key] = {
value,
};
} else {
resolvedConstraint[key] = {
value:
fromSrc[attributeFrom]?.[attributeName] ?? fromSrc.metadataInstance?.[attributeName],
};
}
} else {
resolvedConstraint[key] = value;
}
}, {});
return resolvedConstraint;
};
const HPMatcher = {
match,
};
export { HPMatcher };
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