Proper data types

[skip ci]

src-ui/src/app/data/ocr-template.ts

@@ -1,11 +1,51 @@
 import { ObjectWithId } from './object-with-id'
 
 export type OcrZoneTarget = 'custom_field' | 'title' | 'asn' | 'created'
+export type OcrBuiltinTarget = Exclude<OcrZoneTarget, 'custom_field'>
+export type OcrZoneTransform =
+  | 'none'
+  | 'strip'
+  | 'uppercase'
+  | 'lowercase'
+  | 'numeric'
+  | 'strip_punctuation'
+  | 'date'
+  | 'qr_code'
+
+export const OCR_ZONE_TARGET = {
+  CustomField: 'custom_field',
+  Title: 'title',
+  Asn: 'asn',
+  Created: 'created',
+} as const satisfies Record<string, OcrZoneTarget>
+
+export const OCR_ZONE_TRANSFORM = {
+  None: 'none',
+  Strip: 'strip',
+  Uppercase: 'uppercase',
+  Lowercase: 'lowercase',
+  Numeric: 'numeric',
+  StripPunctuation: 'strip_punctuation',
+  Date: 'date',
+  QrCode: 'qr_code',
+} as const satisfies Record<string, OcrZoneTransform>
+
+export const DEFAULT_OCR_ZONE_TARGET = OCR_ZONE_TARGET.CustomField
+export const DEFAULT_OCR_ZONE_TRANSFORM = OCR_ZONE_TRANSFORM.Strip
+export const DEFAULT_OCR_ZONE_LANGUAGE = 'deu+eng'
+
+export function isOcrBuiltinTarget(value: unknown): value is OcrBuiltinTarget {
+  return (
+    value === OCR_ZONE_TARGET.Title ||
+    value === OCR_ZONE_TARGET.Asn ||
+    value === OCR_ZONE_TARGET.Created
+  )
+}
 
 export const OCR_BUILTIN_TARGETS = [
-  { id: 'title', name: $localize`Title` },
-  { id: 'asn', name: $localize`Archive serial number` },
-  { id: 'created', name: $localize`Date created` },
+  { id: OCR_ZONE_TARGET.Title, name: $localize`Title` },
+  { id: OCR_ZONE_TARGET.Asn, name: $localize`Archive serial number` },
+  { id: OCR_ZONE_TARGET.Created, name: $localize`Date created` },
 ]
 
 export interface OcrTemplateZone {
@@ -19,7 +59,7 @@ export interface OcrTemplateZone {
   width: number
   height: number
   ocr_language: string
-  transform: string
+  transform: OcrZoneTransform
   date_format?: string
   validation_regex: string
   order: number
@@ -28,17 +68,17 @@ export interface OcrTemplateZone {
 }
 
 export const TRANSFORM_OPTIONS = [
-  { id: 'none', name: $localize`None` },
-  { id: 'strip', name: $localize`Strip whitespace` },
-  { id: 'uppercase', name: $localize`Uppercase` },
-  { id: 'lowercase', name: $localize`Lowercase` },
-  { id: 'numeric', name: $localize`Numeric only` },
+  { id: OCR_ZONE_TRANSFORM.None, name: $localize`None` },
+  { id: OCR_ZONE_TRANSFORM.Strip, name: $localize`Strip whitespace` },
+  { id: OCR_ZONE_TRANSFORM.Uppercase, name: $localize`Uppercase` },
+  { id: OCR_ZONE_TRANSFORM.Lowercase, name: $localize`Lowercase` },
+  { id: OCR_ZONE_TRANSFORM.Numeric, name: $localize`Numeric only` },
   {
-    id: 'strip_punctuation',
+    id: OCR_ZONE_TRANSFORM.StripPunctuation,
     name: $localize`Remove leading/trailing punctuation`,
   },
-  { id: 'date', name: $localize`Parse date` },
-  { id: 'qr_code', name: $localize`Read QR/barcode` },
+  { id: OCR_ZONE_TRANSFORM.Date, name: $localize`Parse date` },
+  { id: OCR_ZONE_TRANSFORM.QrCode, name: $localize`Read QR/barcode` },
 ]
 
 export const OCR_LANGUAGE_OPTIONS = [
@@ -79,7 +119,7 @@ export interface ZoneTestRequest {
   height: number
   page: number
   ocr_language: string
-  transform: string
+  transform: OcrZoneTransform
   date_format?: string
   validation_regex: string
   zone_source_width?: number