67 lines
2.1 KiB
JavaScript
67 lines
2.1 KiB
JavaScript
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const { ObjectId } = require("mongodb");
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const ACCESS_LEVEL_MIN = 0;
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const ACCESS_LEVEL_MAX = 3;
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function normalizeAccessLevel(value) {
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return Number.isInteger(value) && value >= ACCESS_LEVEL_MIN && value <= ACCESS_LEVEL_MAX
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? value
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: ACCESS_LEVEL_MIN;
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}
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function getHighestDrugAccessLevels(drugs = []) {
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return drugs.reduce(
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(levels, drug) => ({
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antibioticLevel: Math.max(levels.antibioticLevel, normalizeAccessLevel(drug && drug.antibiotic_level)),
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tumorUse: Math.max(levels.tumorUse, normalizeAccessLevel(drug && drug.tumor_use)),
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}),
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{ antibioticLevel: ACCESS_LEVEL_MIN, tumorUse: ACCESS_LEVEL_MIN }
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);
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}
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async function getRequiredDrugAccessLevels(db, drugs) {
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const drugIds = Array.isArray(drugs)
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? [...new Set(drugs
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.map(drug => drug && drug._id)
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.filter(id => ObjectId.isValid(id))
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.map(id => String(id)))]
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: [];
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if (drugIds.length === 0) {
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return getHighestDrugAccessLevels([]);
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}
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const drugList = await db.collection("drug-info").find(
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{ _id: { $in: drugIds.map(id => new ObjectId(id)) } },
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{ projection: { antibiotic_level: 1, tumor_use: 1 } }
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).toArray();
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return getHighestDrugAccessLevels(drugList);
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}
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function doctorMeetsDrugAccessLevels(doctor, requiredLevels) {
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return normalizeAccessLevel(doctor && doctor.antibiotic_level) >= normalizeAccessLevel(requiredLevels && requiredLevels.antibioticLevel)
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&& normalizeAccessLevel(doctor && doctor.tumor_use) >= normalizeAccessLevel(requiredLevels && requiredLevels.tumorUse);
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}
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function getDoctorAccessLevelQuery(minimumAntibioticLevel, minimumTumorUse) {
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const query = {};
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const antibioticLevel = normalizeAccessLevel(minimumAntibioticLevel);
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const tumorUse = normalizeAccessLevel(minimumTumorUse);
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if (antibioticLevel > 0) {
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query.antibiotic_level = { $gte: antibioticLevel };
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}
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if (tumorUse > 0) {
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query.tumor_use = { $gte: tumorUse };
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}
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return query;
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}
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module.exports = {
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normalizeAccessLevel,
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getHighestDrugAccessLevels,
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getRequiredDrugAccessLevels,
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doctorMeetsDrugAccessLevels,
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getDoctorAccessLevelQuery,
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};
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