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cb558b3 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 | 'use strict';
const fs = require('fs');
const path = require('path');
const { parse } = require('csv-parse/sync');
const { stringify } = require('csv-stringify/sync');
const DATA_DIR = process.env.DATA_DIR || path.join(__dirname, '../../data');
const CACHE_FILE = path.join(DATA_DIR, 'gap1_cache.csv');
const HEADERS = ['brand_name_lc','generic_name','active_ingredients','drug_a','drug_b','severity','side_effects','mechanism','clinical_action','confidence','created_at'];
class Gap1Cache {
constructor() {
// brand_lc → { generic_name, active_ingredients, interactions: Map(drug_b → {severity, ...}) }
this.medicines = new Map();
// 'drug_a|drug_b' → { severity, side_effects, mechanism, clinical_action }
this.pairIndex = new Map();
this._load();
}
_load() {
if (!fs.existsSync(CACHE_FILE)) {
fs.writeFileSync(CACHE_FILE, HEADERS.join(',') + '\n');
return;
}
try {
const raw = fs.readFileSync(CACHE_FILE);
const rows = parse(raw, { columns: true, skip_empty_lines: true });
for (const r of rows) {
this._indexRow(r);
}
console.log(`[gap1Cache] loaded ${rows.length} cached rows`);
} catch (e) {
console.error('[gap1Cache] load error:', e.message);
}
}
_indexRow(r) {
const brandLc = r.brand_name_lc;
if (!this.medicines.has(brandLc)) {
this.medicines.set(brandLc, {
generic_name: r.generic_name,
active_ingredients: r.active_ingredients ? r.active_ingredients.split('|') : [],
interactions: new Map(),
});
}
if (r.drug_b) {
this.medicines.get(brandLc).interactions.set(r.drug_b, {
severity: r.severity,
side_effects: r.side_effects,
mechanism: r.mechanism,
clinical_action: r.clinical_action,
});
const [da, db] = r.drug_a < r.drug_b ? [r.drug_a, r.drug_b] : [r.drug_b, r.drug_a];
this.pairIndex.set(`${da}|${db}`, {
severity: r.severity,
side_effects: r.side_effects,
mechanism: r.mechanism,
clinical_action: r.clinical_action,
});
}
}
getMedicine(brandName) {
return this.medicines.get(brandName.toLowerCase()) || null;
}
getPair(drugA, drugB) {
const [da, db] = drugA < drugB ? [drugA, drugB] : [drugB, drugA];
return this.pairIndex.get(`${da}|${db}`) || null;
}
save(brandName, geminiData) {
const brandLc = brandName.toLowerCase();
const activeIngs = geminiData.active_ingredients || [];
const allInteractions = [
...(geminiData.prescription_interactions || []),
...(geminiData.common_interactions || []),
];
const rows = [];
const now = new Date().toISOString().split('T')[0];
if (allInteractions.length === 0) {
// Save medicine with no interactions found
rows.push({
brand_name_lc: brandLc,
generic_name: geminiData.generic_name || '',
active_ingredients: activeIngs.join('|'),
drug_a: brandLc,
drug_b: '',
severity: '',
side_effects: '',
mechanism: '',
clinical_action: '',
confidence: geminiData.confidence || 0,
created_at: now,
});
} else {
for (const it of allInteractions) {
if (!it.drug || it.severity === 'Safe') continue;
rows.push({
brand_name_lc: brandLc,
generic_name: geminiData.generic_name || '',
active_ingredients: activeIngs.join('|'),
drug_a: brandLc,
drug_b: it.drug.toLowerCase(),
severity: it.severity,
side_effects: it.side_effects || '',
mechanism: it.mechanism || '',
clinical_action: it.clinical_action || '',
confidence: geminiData.confidence || 0,
created_at: now,
});
}
// If every interaction was filtered out, still register the medicine
// so future queries hit the cache and the brand resolves correctly.
if (rows.length === 0) {
rows.push({
brand_name_lc: brandLc,
generic_name: geminiData.generic_name || '',
active_ingredients: activeIngs.join('|'),
drug_a: brandLc,
drug_b: '',
severity: '',
side_effects: '',
mechanism: '',
clinical_action: '',
confidence: geminiData.confidence || 0,
created_at: now,
});
}
}
// Append to CSV
const csv = stringify(rows, { header: false, columns: HEADERS });
fs.appendFileSync(CACHE_FILE, csv);
// Index in memory
for (const r of rows) this._indexRow(r);
console.log(`[gap1Cache] saved ${rows.length} rows for "${brandName}"`);
return rows.length;
}
}
module.exports = { Gap1Cache };
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