Implement WKT validation in data-type.ts

Add WKT validation function and regex for geometry types.

Signed-off-by: bdjulbic <bdjulbic@foursquare.com>

Author: bdjulbic

src/common-utils/src/data-type.ts

@@ -11,6 +11,30 @@ import {h3IsValid} from './h3-utils';
 
 const H3_ANALYZER_TYPE = 'H3';
 
+// WKT (Well-Known Text) geometry prefixes.
+// Keep this intentionally lightweight: we only use it to prevent geometry strings
+// from being treated as generic text (e.g. for tooltip field auto-picking).
+const WKT_PREFIX_RE =
+  /^(?:SRID=\d+\s*;\s*)?(?:POINT|LINESTRING|POLYGON|MULTIPOINT|MULTILINESTRING|MULTIPOLYGON|GEOMETRYCOLLECTION)(?:\s+(?:Z|M|ZM))?\s*\(/i;
+
+function isWkt(value: unknown): boolean {
+  if (typeof value !== 'string') {
+    return false;
+  }
+
+  const s = value.trim();
+  if (s.length < 10) {
+    return false;
+  }
+
+  // Quick structural checks to avoid regex work for typical strings.
+  if (!s.includes('(') || !s.includes(')')) {
+    return false;
+  }
+
+  return WKT_PREFIX_RE.test(s);
+}
+
 export const ACCEPTED_ANALYZER_TYPES = [
   AnalyzerDATA_TYPES.DATE,
   AnalyzerDATA_TYPES.TIME,
@@ -267,6 +291,11 @@ export function getFieldsFromData(data: RowData, fieldOrder: string[]): Field[]
       type = data.some(d => isHexWkb(d[name])) ? AnalyzerDATA_TYPES.GEOMETRY : type;
     }
 
+    // quick check if string is wkt
+    if (type === AnalyzerDATA_TYPES.STRING) {
+      type = data.some(d => isWkt(d[name])) ? AnalyzerDATA_TYPES.GEOMETRY_FROM_STRING : type;
+    }
+
     return {
       name,
       id: name,