import {z} from 'zod'

export type EntryType = 'Undefined' | 'Album' | 'Artist' | 'DiscussionTopic' | 'PV' | 'ReleaseEvent' | 'ReleaseEventSeries' | 'Song' | 'SongList' | 'Tag' | 'User' | 'Venue';

export type GetApiApiEntriesRandomArgs = {entryType?: EntryType | undefined};

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

export const entryType = z.enum(["Undefined", "Album", "Artist", "DiscussionTopic", "PV", "ReleaseEvent", "ReleaseEventSeries", "Song", "SongList", "Tag", "User", "Venue"]);

export const entryRefContract = z.object({entryType: entryType.optional(), id: z.number().int().optional()});

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 /api/entries/random
 */
export const getApiApiEntriesRandom = async (args: GetApiApiEntriesRandomArgs, options: GetApiApiEntriesRandomOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/api/entries/random${query.size > 0 ? `?${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(entryRefContract, await res.json())
};