import {z} from 'zod'

export type GetApiApiV1ContentIdChannelsArgs = {Authorization: string, page?: number | undefined, per_page?: number | undefined};

export type GetApiApiV1ContentIdChannelsOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const whitelistedChannel = z.object({id: z.string().optional(), type: z.string().optional(), attributes: z.object({channel_id: z.string().optional(), title: z.string().optional(), avatar_url: z.string().optional()}).optional()});

export const contentIdStatus = z.enum(["active", "inactive", "expired", "quota_reached"]);

export const contentIdLicenseMeta = z.object({code: z.string().optional(), status: contentIdStatus.optional(), expiration_date: z.string().nullable().optional()});

export const getApiApiV1ContentIdChannelsResponse = z.object({data: z.array(whitelistedChannel).optional(), meta: z.object({license: contentIdLicenseMeta.nullable().optional(), obj_count: z.number().int().optional(), page_count: z.number().int().optional()}).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
};

/**
 * List whitelisted YouTube channels
 * 
 * GET /api/v1/content_id/channels
 */
export const getApiApiV1ContentIdChannels = async (args: GetApiApiV1ContentIdChannelsArgs, options?: GetApiApiV1ContentIdChannelsOptions) => {
const {baseUrl = "https://api.melod.ie", fetch: fetchFn = fetch} = options ?? {}

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

if (args.Authorization != null) headers.set("Authorization", String(args.Authorization))
if (args.page != null) query.append("page", String(args.page))
if (args.per_page != null) query.append("per_page", String(args.per_page))

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/content_id/channels${query.size > 0 ? `?${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(getApiApiV1ContentIdChannelsResponse, await res.json())
};