import { deepCopy } from 'src/utilities/dom'

import type { GalleryEntry, GalleryEntryInheritedProperties } from './gallery'

export const getTitleFromEntryOrId = (entry: GalleryEntry, id: string) => (
  entry.title !== undefined
    ? entry.title === '' || entry.title === null
      ? 'untitled'
      : entry.title
    : id
)

export const amendVariantsWithDefaults = (entry: GalleryEntry) => {
  const variants = deepCopy(entry.variants)
  if (!!variants) {
    Object.keys(variants).forEach(id => _amendVariantWithDefaults(entry, variants[id]))
  }

  return variants
}

export const _amendVariantWithDefaults = (parent: GalleryEntryInheritedProperties, variant: GalleryEntryInheritedProperties) => {
  if (variant.title === undefined && (!!parent.title || parent.title === null || parent.title === '')) {
    variant.title = parent.title
  }
  if (!variant.description && !!parent.description) {
    variant.description = parent.description
  }
  if (variant.warning === undefined && !!parent.warning) {
    variant.warning = parent.warning
  }
  if (!variant.fields && !!parent.fields) {
    variant.fields = parent.fields
  }

  return variant
}