Merge pull request #24468 from overleaf/mj-client-side-references

[web] Perform ARS on client-side

GitOrigin-RevId: 19703c82758cae450fe52463ad9612d3a2383ba0

services/web/frontend/js/features/ide-react/references/reference-index.ts

@@ -0,0 +1,43 @@
+import Bib2Json from './bib2json'
+import { AdvancedReferenceSearchResult, Bib2JsonEntry, Changes } from './types'
+
+export abstract class ReferenceIndex {
+  keys: Set<string> = new Set()
+
+  abstract updateIndex({ updates, deletes }: Changes): void
+  async search(_query: string): Promise<AdvancedReferenceSearchResult> {
+    return { hits: [] }
+  }
+
+  getKeys(): Set<string> {
+    return this.keys
+  }
+
+  parseEntries(content: string): Bib2JsonEntry[] {
+    const allowedFields = ['author', 'journal', 'title', 'year', 'date']
+    // @ts-expect-error Bib2Json works as both a constructor and a function
+    const { entries } = Bib2Json(content, allowedFields)
+    for (const entry of entries) {
+      if (entry.Fields?.year) {
+        entry.Fields.year = parseInt(entry.Fields.year).toString()
+        if (entry.Fields.year === 'NaN') {
+          delete entry.Fields.year
+        }
+      }
+      setDefaultFields(entry.Fields)
+    }
+    return entries
+  }
+}
+
+function setDefaultFields(
+  fields: Partial<Bib2JsonEntry['Fields']>
+): Bib2JsonEntry['Fields'] {
+  const requiredFields = ['author', 'journal', 'title', 'date', 'year'] as const
+  for (const field of requiredFields) {
+    if (!fields[field]) {
+      fields[field] = ''
+    }
+  }
+  return fields as Bib2JsonEntry['Fields']
+}