// Wire types of GET /_seo/api/v1/resolve. Field names mirror the Go
// serializer (classes.Result in sm-seo-plugin) exactly. Types only, so
// `node --test` can import any util.

/** ok, not_found, redirect or gone. */
export type SeoAction = 'ok' | 'not_found' | 'redirect' | 'gone'

export interface SeoMetaTag {
  name: string
  content: string
}

/** The head metadata of a resolved page. Empty strings mean "no value". */
export interface SeoHead {
  title: string
  description: string
  canonical: string
  robots: string
  x_robots_tag: string
  og: {
    title: string
    description: string
    image: string
    url: string
    /** og:locale of the page (pl_PL); absent from backends before SEO v0.2.0. */
    locale?: string
    /** og:locale:alternate values, one per other translated locale. */
    locale_alternates?: string[]
  }
  twitter: { card: string; site: string }
  verification: SeoMetaTag[]
}

export interface SeoResolveAnswer {
  action: SeoAction
  /** The HTTP status the frontend should answer with (200, 301, 302, 404, 410). */
  status: number
  /** The absolute target of a redirect answer; absent otherwise. */
  location?: string
  /** The absolute URL of the page on the site URL. */
  url: string
  locale: string
  /** True outside the backend's production environment: noindex everywhere. */
  staging: boolean
  /** Set on ok answers only. */
  seo: SeoHead | null
  // The keys below are additive (SEO plugin v0.2.0); an older backend leaves
  // them out and every consumer treats an absent key as empty.
  /** The <html lang> value (pl, pl-PL), set on ok answers. */
  html_lang?: string
  /** hreflang alternates including the page itself and x-default; absolute URLs. */
  alternates?: SeoAlternate[]
  /** One {"@context", "@graph"} object, or null. */
  jsonld?: SeoJsonLd | null
  breadcrumbs?: SeoBreadcrumb[]
  /** Present only when the request carries a page number. */
  pagination?: SeoPaginationAnswer
  outbound?: SeoOutbound
  autolinks?: Array<{ phrase: string; url: string }>
  autolink_max?: number
}

export interface SeoAlternate {
  hreflang: string
  url: string
}

/** A schema.org node; @id links nodes across the graph. */
export type SeoSchemaNode = Record<string, unknown> & { '@id'?: string; '@type'?: string | string[] }

export interface SeoJsonLd {
  '@context'?: string
  '@graph'?: SeoSchemaNode[]
}

export interface SeoBreadcrumb {
  name: string
  url: string
  path: string
}

export interface SeoPaginationAnswer {
  form?: 'query' | 'path'
  param?: string
  segment?: string
  page?: number
  /** A page value that is not a page number (?page=abc): the layer answers 404. */
  invalid?: boolean
}

export interface SeoOutbound {
  new_tab?: boolean
  nofollow_domains?: string[]
  sponsored_domains?: string[]
}

/** GET /_seo/api/v1/site. Every key may be absent on an older backend. */
export interface SeoSiteAnswer {
  site_url?: string
  default_locale?: string
  locales?: string[]
  unprefixed_locale?: string
  links?: { new_tab?: boolean }
  html_sitemap?: { enabled?: boolean; paths?: Record<string, string>; page_size?: number }
  routes?: Array<{ type: string; pattern: string }>
  /** Root file names the backend serves (verification files, the IndexNow key file). */
  root_files?: string[]
  llms?: boolean
  pagination?: { form?: 'query' | 'path'; param?: string; segments?: Record<string, string> }
  home_crumb?: { name?: string; url?: string } | null
}