58 lines
1.7 KiB
JavaScript
58 lines
1.7 KiB
JavaScript
let ensureIndexesPromise = null;
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async function ensureApplicableDiagnosisIndexes(db) {
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if (!ensureIndexesPromise) {
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ensureIndexesPromise = Promise.all([
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db.collection("drug-info").createIndex({ applicableDiagnosisCodes: 1 }),
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db.collection("online-drug-info").createIndex({ applicableDiagnosisCodes: 1 }),
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]).catch((error) => {
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ensureIndexesPromise = null;
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throw error;
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});
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}
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await ensureIndexesPromise;
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}
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async function validateApplicableDiagnosisCodes(params, db) {
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if (!Object.prototype.hasOwnProperty.call(params, "applicableDiagnosisCodes")) {
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return { present: false, value: [] };
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}
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const rawCodes = params.applicableDiagnosisCodes;
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if (!Array.isArray(rawCodes)) {
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throw new Error("适应诊断格式错误");
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}
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const uniqueCodes = [];
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const seen = new Set();
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for (const rawCode of rawCodes) {
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if (typeof rawCode !== "string" || !rawCode.trim()) {
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throw new Error("适应诊断包含无效编码");
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}
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const code = rawCode.trim();
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if (!seen.has(code)) {
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seen.add(code);
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uniqueCodes.push(code);
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}
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}
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if (uniqueCodes.length) {
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const diagnoses = await db.collection("hlw-diagnosis").find(
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{ code: { $in: uniqueCodes } },
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{ projection: { _id: 0, code: 1 } }
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).toArray();
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const existingCodes = new Set(diagnoses.map(item => item.code));
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if (uniqueCodes.some(code => !existingCodes.has(code))) {
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throw new Error("部分适应诊断不存在，请重新选择");
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}
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}
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await ensureApplicableDiagnosisIndexes(db);
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return { present: true, value: uniqueCodes };
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}
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module.exports = {
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ensureApplicableDiagnosisIndexes,
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validateApplicableDiagnosisCodes,
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};
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