import {z} from 'zod'

export type GetApiLocaleSlugJsonArgs = {locale: 'ar' | 'zh' | 'en' | 'fr' | 'ru' | 'es', slug: string, language?: ('ar' | 'zh' | 'en' | 'fr' | 'ru' | 'es') | undefined};

export type GetApiLocaleSlugJsonOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const meetingResponse = z.union([z.object({disclaimer: z.string(), video: z.object({id: z.string(), kaltura_id: z.string().nullable(), title: z.string().nullable(), clean_title: z.string().nullable(), url: z.string().nullable(), date: z.string().nullable(), scheduled_time: z.string().nullable(), status: z.string().nullable(), duration: z.number().nullable(), category: z.string().nullable(), body: z.string().nullable(), event_code: z.string().nullable(), event_type: z.string().nullable(), session_number: z.string().nullable(), pv_symbol: z.string().nullable(), pv_part: z.string().nullable(), slug: z.string()}), metadata: z.object({summary: z.string().nullable(), description: z.string().nullable(), categories: z.array(z.string()), geographic_subject: z.array(z.string()), subject_topical: z.array(z.string()), corporate_name: z.array(z.string()), speaker_affiliation: z.array(z.string()), related_documents: z.array(z.string())}), transcript: z.object({transcript_id: z.string(), language: z.string(), data: z.array(z.object({statement_number: z.number().int().gte(-9007199254740991).lte(9007199254740991), start: z.number(), pageUrl: z.string(), paragraphs: z.array(z.object({sentences: z.array(z.object({text: z.string(), start: z.number(), end: z.number(), topics: z.array(z.object({key: z.string(), label: z.string(), description: z.string()})), words: z.array(z.object({text: z.string(), start: z.number(), end: z.number()})).optional()}))})), speaker: z.object({affiliation: z.string().nullable(), affiliation_full: z.string().nullable(), group: z.string().nullable(), function: z.string().nullable()})})), topics: z.array(z.object({key: z.string(), label: z.string(), description: z.string()}))})}), z.object({disclaimer: z.string(), video: z.object({id: z.string(), kaltura_id: z.string().nullable(), title: z.string().nullable(), clean_title: z.string().nullable(), url: z.string().nullable(), date: z.string().nullable(), scheduled_time: z.string().nullable(), status: z.string().nullable(), duration: z.number().nullable(), category: z.string().nullable(), body: z.string().nullable(), event_code: z.string().nullable(), event_type: z.string().nullable(), session_number: z.string().nullable(), pv_symbol: z.string().nullable(), pv_part: z.string().nullable(), slug: z.string()}), metadata: z.object({summary: z.string().nullable(), description: z.string().nullable(), categories: z.array(z.string()), geographic_subject: z.array(z.string()), subject_topical: z.array(z.string()), corporate_name: z.array(z.string()), speaker_affiliation: z.array(z.string()), related_documents: z.array(z.string())}), transcript: z.unknown(), message: z.string()}), z.object({disclaimer: z.string(), video: z.object({id: z.string(), kaltura_id: z.string().nullable(), title: z.string().nullable(), clean_title: z.string().nullable(), url: z.string().nullable(), date: z.string().nullable(), scheduled_time: z.string().nullable(), status: z.string().nullable(), duration: z.number().nullable(), category: z.string().nullable(), body: z.string().nullable(), event_code: z.string().nullable(), event_type: z.string().nullable(), session_number: z.string().nullable(), pv_symbol: z.string().nullable(), pv_part: z.string().nullable(), slug: z.string()}), metadata: z.object({summary: z.string().nullable(), description: z.string().nullable(), categories: z.array(z.string()), geographic_subject: z.array(z.string()), subject_topical: z.array(z.string()), corporate_name: z.array(z.string()), speaker_affiliation: z.array(z.string()), related_documents: z.array(z.string())}), transcript: z.object({status: z.string(), transcriptId: z.string()}), message: z.string()})]);

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * Get a single meeting and its transcript (JSON)
 * 
 * GET /{locale}/{slug}.json
 */
export const getApiLocaleSlugJson = async (args: GetApiLocaleSlugJsonArgs, options: GetApiLocaleSlugJsonOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('accept', "application/json")

if (args.language != null) query.append("language", String(args.language))

const url = `${baseUrl.replace(/\/+$/, '')}/${encodeURIComponent(String(args.locale))}/${encodeURIComponent(String(args.slug))}.json${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(meetingResponse, await res.json())
};