1import type { FieldHook } from 'payload'
2
3export const formatSlug = (val: string): string | undefined =>
4  val
5    ?.replace(/ /g, '-')
6    .replace(/[^\w-]+/g, '')
7    .toLowerCase()
8
9export const formatSlugHook =
10  (fallback: string): FieldHook =>
11  ({ data, operation, value }) => {
12    if (typeof value === 'string') {
13      return formatSlug(value)
14    }
15
16    if (operation === 'create' || data?.slug === undefined) {
17      const fallbackData = data?.[fallback]
18
19      if (typeof fallbackData === 'string') {
20        return formatSlug(fallbackData)
21      }
22    }
23
24    return value
25  }
26
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