type MediaLike = { url?: null | string } | null | undefined

type Address = {
  city?: string
  country?: string // ISO code, e.g. 'PL'
  postalCode?: string
  region?: string
  street?: string
}

type LocalBusinessJsonLdArgs = {
  address?: Address
  /** Geo coordinates for maps/local search. */
  geo?: { latitude: number; longitude: number }
  image?: MediaLike
  logo?: MediaLike
  name: string
  /** Opening hours, e.g. ['Mo-Fr 08:00-18:00', 'Sa 09:00-14:00']. */
  openingHours?: string[]
  priceRange?: string // e.g. '$$'
  sameAs?: string[]
  /** Business phone, e.g. '+48 123 456 789'. */
  telephone?: string
  url: string
}

/**
 * Builds LocalBusiness JSON-LD (schema.org) — the key structured data for LOCAL
 * SEO. Helps Google show the business in local results / map pack with address,
 * hours, phone. Strong signal for "usługa + miasto" queries.
 *
 * All data from the panel (company global) — nothing hardcoded. Emit once in the
 * root layout (business is site-wide):
 *
 *   import { buildLocalBusinessJsonLd } from '@intecion/ipal-kit'
 *   const jsonLd = buildLocalBusinessJsonLd({
 *     name: company.name, url: baseUrl, telephone: company.phone,
 *     address: company.address, openingHours: company.hours,
 *   })
 *
 * For a more specific type (e.g. 'Dentist', 'Plumber'), override @type in the
 * returned object — schema.org has many LocalBusiness subtypes.
 */
export function buildLocalBusinessJsonLd({
  name,
  address,
  geo,
  image,
  logo,
  openingHours,
  priceRange,
  sameAs,
  telephone,
  url,
}: LocalBusinessJsonLdArgs) {
  const logoUrl = logo?.url
  const imageUrl = image?.url ?? logoUrl

  return {
    name,
    '@context': 'https://schema.org',
    '@type': 'LocalBusiness',
    url,
    ...(telephone ? { telephone } : {}),
    ...(imageUrl ? { image: imageUrl.startsWith('http') ? imageUrl : `${url}${imageUrl}` } : {}),
    ...(logoUrl ? { logo: logoUrl.startsWith('http') ? logoUrl : `${url}${logoUrl}` } : {}),
    ...(address
      ? {
          address: {
            '@type': 'PostalAddress',
            ...(address.street ? { streetAddress: address.street } : {}),
            ...(address.city ? { addressLocality: address.city } : {}),
            ...(address.postalCode ? { postalCode: address.postalCode } : {}),
            ...(address.region ? { addressRegion: address.region } : {}),
            ...(address.country ? { addressCountry: address.country } : {}),
          },
        }
      : {}),
    ...(geo
      ? { geo: { '@type': 'GeoCoordinates', latitude: geo.latitude, longitude: geo.longitude } }
      : {}),
    ...(openingHours && openingHours.length > 0 ? { openingHours } : {}),
    ...(priceRange ? { priceRange } : {}),
    ...(sameAs && sameAs.length > 0 ? { sameAs } : {}),
  }
}