Initial Commit

backend/src/features/vehicles/domain/name-normalizer.ts

@@ -0,0 +1,52 @@
+/**
+ * Normalizes vehicle make and model names for human-friendly display.
+ * - Replaces underscores with spaces
+ * - Collapses whitespace
+ * - Title-cases standard words
+ * - Uppercases common acronyms (e.g., HD, GT, Z06)
+ */
+
+const MODEL_ACRONYMS = new Set([
+  'HD','GT','GL','SE','LE','XLE','RS','SVT','XR','ST','FX4','TRD','ZR1','Z06','GTI','GLI','SI','SS','LT','LTZ','RT','SRT','SR','SR5','XSE','SEL'
+]);
+
+export function normalizeModelName(input?: string | null): string | undefined {
+  if (input == null) return input ?? undefined;
+  let s = String(input).replace(/_/g, ' ');
+  s = s.replace(/\s+/g, ' ').trim();
+  if (s.length === 0) return s;
+
+  const tokens = s.split(' ');
+  const normalized = tokens.map(t => {
+    const raw = t;
+    const upper = raw.toUpperCase();
+    const lower = raw.toLowerCase();
+    // Uppercase known acronyms (match case-insensitively)
+    if (MODEL_ACRONYMS.has(upper)) return upper;
+    // Tokens with letters+digits (e.g., Z06) – prefer uppercase
+    if (/^[a-z0-9]+$/i.test(raw) && /[a-z]/i.test(raw) && /\d/.test(raw) && raw.length <= 4) {
+      return upper;
+    }
+    // Pure letters: title case
+    if (/^[a-z]+$/i.test(raw)) {
+      return lower.charAt(0).toUpperCase() + lower.slice(1);
+    }
+    // Numbers or mixed/punctuated tokens: keep as-is except collapse case
+    return raw;
+  });
+  return normalized.join(' ');
+}
+
+export function normalizeMakeName(input?: string | null): string | undefined {
+  if (input == null) return input ?? undefined;
+  let s = String(input).replace(/_/g, ' ').replace(/\s+/g, ' ').trim();
+  if (s.length === 0) return s;
+  const title = s.toLowerCase().split(' ').map(w => w.charAt(0).toUpperCase() + w.slice(1)).join(' ');
+  // Special cases
+  if (/^bmw$/i.test(s)) return 'BMW';
+  if (/^gmc$/i.test(s)) return 'GMC';
+  if (/^mini$/i.test(s)) return 'MINI';
+  if (/^mclaren$/i.test(s)) return 'McLaren';
+  return title;
+}
+