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Add the field getters/setters to the Ringdown prototype
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Don't add them to every instance individually.
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@fwextensions
fwextensions committed Sep 7, 2022
1 parent f942062 commit 59f96ad
Showing 1 changed file with 95 additions and 82 deletions.
177 changes: 95 additions & 82 deletions src/Models/Ringdown.js
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Original file line number Diff line number Diff line change
@@ -1,43 +1,12 @@
// eslint-disable func-names
import { DateTime } from 'luxon';
import PropTypes from 'prop-types';
import { PatientFieldData, ValidationState } from './PatientFieldData';
import * as metadata from '../shared/metadata';
import convertToPropType from '../shared/convertToPropType';
import DeliveryStatus from '../shared/constants/DeliveryStatus';

function attachFields(target, fields, data) {
const props = {};

fields.forEach((field) => {
props[field.name] = {
get() {
return data[field.name] ?? field.defaultValue;
},
set(newValue) {
data[field.name] = newValue;
},
configurable: true,
enumerable: true,
};
});

Object.defineProperties(target, props);
}

function overrideSetter(target, key, setter) {
const descriptor = Object.getOwnPropertyDescriptor(target, key);

if (!descriptor || !descriptor.set) {
throw new Error(`setter for '${key}' does not exist on the target.`);
}

Object.defineProperty(target, key, {
...descriptor,
set: setter,
});
}

// specify the fields that must all have valid input to make the ringdown valid. the second array item is an optional function to determine
// define the fields that must all have valid input to make the ringdown valid. the second array item is an optional function to determine
// whether the field's current value is valid as input. by default, the field is counted as having input if its value is truthy. the
// array order should be the same as the field order in PatientFields.
const validatedFields = [
Expand All @@ -51,21 +20,31 @@ const validatedFields = [
['all', () => ValidationState.NO_INPUT],
];

// define the names of the objects that will be added to the Ringdown payload property, and the list of its fields for which getters/setters
// will be added. if the object name is an array, the second string is used as the object name.
const payloadModels = [
['ambulance', ['ambulanceIdentifier']],
[['emergencyMedicalServiceCall', 'emsCall'], ['dispatchCallNumber']],
// we want to expose the hospital id field under a different name, so we'll define it in the class below instead of here
['hospital', []],
// ['hospital', [['id', 'hospitalId']]],
['patient', metadata.patient.getObjectFields()],
['patientDelivery', ['etaMinutes', 'currentDeliveryStatus']],
];

// build a hash with an empty default object for each sub-object in the payload
const createDefaultPayload = () => ({
...payloadModels.reduce((result, [name]) => ({ ...result, [name instanceof Array ? name[1] : name]: {} }), {}),
// default the urgency to Code 2 for a fresh ringdown if the Code 3 option has been disabled
patient: (window.env.REACT_APP_DISABLE_CODE_3 && { emergencyServiceResponseType: 'CODE 2' }) || {},
});
function createDefaultPayload() {
const emptyPayload = payloadModels.reduce((result, [name]) => {
const objectName = name instanceof Array ? name[1] : name;
result[objectName] = {};
return result;
}, {});

return {
...emptyPayload,
// default the urgency to Code 2 for a fresh ringdown if the Code 3 option has been disabled
patient: (window.env.REACT_APP_DISABLE_CODE_3 && { emergencyServiceResponseType: 'CODE 2' }) || {},
};
}

class Ringdown {
static get Status() {
Expand All @@ -88,43 +67,7 @@ class Ringdown {
...payload,
};

payloadModels.forEach(([modelInfo, fieldNames]) => {
let metadataName = modelInfo;
let objectName = modelInfo;

if (modelInfo instanceof Array) {
[metadataName, objectName] = modelInfo;
}
const fields = typeof fieldNames[0] === 'string'
// get the fields listed by name in payloadModels
? metadata[metadataName].getFields(undefined, ({ name }) => fieldNames.includes(name))
// this model's fields have already been extracted
: fieldNames;
const self = this;

// add a getter/setter for each field
attachFields(this, fields, this.payload[objectName]);
// add a getter to return this payload sub-object
this[objectName] = {
get() { return self.payload[objectName]; },
configurable: true,
enumerable: true,
};
});

// add custom setters for these payload fields, since their values affect other fields
overrideSetter(this, 'lowOxygenResponseType', (newValue) => {
this.payload.patient.lowOxygenResponseType = newValue;
if (newValue !== 'SUPPLEMENTAL OXYGEN') {
this.supplementalOxygenAmount = null;
}
});
overrideSetter(this, 'combativeBehaviorIndicator', (newValue) => {
this.payload.patient.combativeBehaviorIndicator = newValue;
this.restraintIndicator = newValue && this.restraintIndicator;
});

this.setValidationData(validationData)
this.setValidationData(validationData);
}

clone() {
Expand All @@ -142,6 +85,7 @@ class Ringdown {

// Hospital

// special-case this field, since the field name (id) is getting mapped to a different name on the Ringdown (hospitalId)
get hospitalId() {
return this.payload.hospital.id ?? null;
}
Expand Down Expand Up @@ -231,12 +175,8 @@ class Ringdown {
this.validationData = validatedFields.reduce((result, field, i) => {
const [name, validator] = field;
const fieldValue = this[name];
const value = typeof validator === 'function'
? validator(fieldValue)
: fieldValue;
const state = value
? ValidationState.INPUT
: ValidationState.NO_INPUT;
const value = typeof validator === 'function' ? validator(fieldValue) : fieldValue;
const state = value ? ValidationState.INPUT : ValidationState.NO_INPUT;

result[name] = new PatientFieldData(name, i, state);

Expand Down Expand Up @@ -284,6 +224,79 @@ class Ringdown {
}
}

function attachFields(target, objectName, fields) {
const props = {};

fields.forEach((field) => {
props[field.name] = {
get() {
return this.payload[objectName][field.name] ?? field.defaultValue;
},
set(newValue) {
this.payload[objectName][field.name] = newValue;
},
configurable: true,
enumerable: true,
};
});

Object.defineProperties(target, props);
}

function overrideSetter(target, key, setter) {
const descriptor = Object.getOwnPropertyDescriptor(target, key);

if (!descriptor || !descriptor.set) {
throw new Error(`setter for '${key}' does not exist on the target.`);
}

Object.defineProperty(target, key, {
...descriptor,
set: setter,
});
}

// add the getters and setters to the Ringdown prototype for each field of each object in the payload
payloadModels.forEach(([modelInfo, fieldNames]) => {
let metadataName = modelInfo;
let objectName = modelInfo;

if (modelInfo instanceof Array) {
// this model is being aliased under a different name on the Ringdown
[metadataName, objectName] = modelInfo;
}

// get the ModelMetadata fields, either filtering by the list of strings in payloadModels or the prefetched array
const fields =
typeof fieldNames[0] === 'string' ? metadata[metadataName].getFields(undefined, ({ name }) => fieldNames.includes(name)) : fieldNames;

// add a getter/setter for each field
attachFields(Ringdown.prototype, objectName, fields);

// add a getter to return this payload sub-object
Object.defineProperties(Ringdown.prototype, {
[objectName]: {
get() {
return this.payload[objectName];
},
configurable: true,
enumerable: true,
},
});
});

// add custom setters for these payload fields, since their values affect other fields
overrideSetter(Ringdown.prototype, 'lowOxygenResponseType', function (newValue) {
this.payload.patient.lowOxygenResponseType = newValue;
if (newValue !== 'SUPPLEMENTAL OXYGEN') {
this.supplementalOxygenAmount = null;
}
});
overrideSetter(Ringdown.prototype, 'combativeBehaviorIndicator', function (newValue) {
this.payload.patient.combativeBehaviorIndicator = newValue;
this.restraintIndicator = newValue && this.restraintIndicator;
});

Ringdown.propTypes = {
ambulanceIdentifier: PropTypes.string.isRequired,
dispatchCallNumber: PropTypes.number.isRequired,
Expand Down

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