import {z} from 'zod'

export type GetApiApiChartsYoutubeVideosArgs = {country_code: string, date?: string | undefined, offset?: number | undefined, latest?: boolean | undefined};

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

export const getApiApiChartsYoutubeVideosResponse = z.object({obj: z.object({length: z.number().int().gte(0), data: z.array(z.object({id: z.union([z.number().int(), z.string()]).nullable().optional(), youtube: z.union([z.string(), z.number()]).nullable().optional(), position: z.number().int().nullable().optional(), rank: z.number().int().nullable().optional(), view_count: z.number().int().gte(0).nullable().optional(), added_at: z.string().nullable().optional(), upload_date: z.string().nullable().optional(), license: z.string().nullable().optional(), velocity: z.number().nullable().optional(), pre_rank: z.number().int().nullable().optional(), peak_rank: z.number().int().nullable().optional(), peak_date: z.string().nullable().optional(), time_on_chart: z.union([z.number().int(), z.string()]).nullable().optional(), rankStats: z.array(z.object({rank: z.number().int().nullable().optional(), timestp: z.string().nullable().optional()})).nullable().optional(), viewStats: z.array(z.object({views: z.number().int().gte(0).nullable().optional(), timestp: z.string().nullable().optional()})).nullable().optional(), cm_track: z.number().int().nullable().optional(), name: z.string().nullable().optional(), isrc: z.string().nullable().optional(), image_url: z.string().nullable().optional(), cm_artist: z.union([z.number().int(), z.array(z.number().int().nullable())]).nullable().optional(), artist_names: z.array(z.string().nullable()).nullable().optional(), code2s: z.array(z.string().nullable()).nullable().optional(), artist_images: z.array(z.string().nullable()).nullable().optional(), artist_covers: z.array(z.string().nullable()).nullable().optional(), album_ids: z.array(z.number().int().nullable()).nullable().optional(), album_names: z.array(z.string().nullable()).nullable().optional(), album_upc: z.array(z.string().nullable()).nullable().optional(), album_label: z.array(z.string().nullable()).nullable().optional(), release_dates: z.array(z.string().nullable()).nullable().optional(), artists: z.array(z.object({id: z.number().int().nullable().optional(), name: z.string().nullable().optional(), code2: z.string().nullable().optional(), image_url: z.string().nullable().optional(), career_stage: z.string().nullable().optional()})).nullable().optional(), album: z.union([z.array(z.object({})), z.object({})]).nullable().optional(), duration_ms: z.number().int().nullable().optional(), explicit: z.boolean().nullable().optional(), preview_url: z.string().nullable().optional(), track_genre: z.union([z.string(), z.array(z.unknown())]).nullable().optional(), spotify_popularity: z.number().int().nullable().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 YouTube Top-Video Chart (weekly)
 * 
 * GET /api/charts/youtube/videos
 */
export const getApiApiChartsYoutubeVideos = async (args: GetApiApiChartsYoutubeVideosArgs, options?: GetApiApiChartsYoutubeVideosOptions) => {
const {baseUrl = "https://api.chartmetric.com", fetch: fetchFn = fetch, BearerAuth} = options ?? {}

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

if (args.country_code != null) query.append("country_code", String(args.country_code))
if (args.date != null) query.append("date", String(args.date))
if (args.offset != null) query.append("offset", String(args.offset))
if (args.latest != null) query.append("latest", String(args.latest))
if (BearerAuth !== undefined) headers.set('authorization', `Bearer ${BearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/api/charts/youtube/videos${query.size > 0 ? `?${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(getApiApiChartsYoutubeVideosResponse, await res.json())
};