import {z} from 'zod'

export type CreateApiApiV2TopSongsArgs = {offset?: number | undefined, limit?: number | undefined, cursor?: string | undefined, body: {sort?: ({platform?: string | undefined, metricType?: string | undefined, period?: string | undefined, sortBy?: string | undefined, order?: string | undefined}) | undefined, filters?: (Array<{type?: string | undefined, data?: ({platform?: string | undefined, metricType?: string | undefined, min?: number | undefined, max?: number | undefined}) | undefined}>) | undefined}};

export type CreateApiApiV2TopSongsOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const topRelated = z.object({updatedAt: z.string().optional()});

export const songLightReleaseDate = z.object({uuid: z.string().optional(), name: z.string().optional(), creditName: z.string().optional(), imageUrl: z.string().optional(), releaseDate: z.string().optional()});

export const periodMetric = z.object({volume: z.number().int().optional(), percent: z.number().optional()});

export const platformMetric = z.object({platformCode: z.string().optional(), metricType: z.string().optional(), total: z.number().int().optional(), week: periodMetric.optional(), month: periodMetric.optional(), quarter: periodMetric.optional()});

export const audio = z.object({acousticness: z.number().optional(), danceability: z.number().optional(), energy: z.number().optional(), instrumentalness: z.number().optional(), key: z.number().int().optional(), liveness: z.number().optional(), loudness: z.number().optional(), mode: z.number().int().optional(), speechiness: z.number().optional(), tempo: z.number().optional(), timeSignature: z.number().int().optional(), valence: z.number().optional()});

export const metricSong = z.object({song: songLightReleaseDate.optional(), audience: z.array(platformMetric).optional(), popularity: z.array(platformMetric).optional(), custom: z.array(platformMetric).optional(), duration: z.number().int().optional(), audio: audio.optional()});

export const cursorPage = z.object({offset: z.number().int().optional(), limit: z.number().int().optional(), next: z.string().optional(), previous: z.string().optional(), total: z.number().int().optional(), cursor: z.string().optional()});

export const error = z.object({key: z.string().optional(), code: z.number().int().optional(), message: z.string().optional()});

export const topSongCollectionResponse = z.object({related: topRelated.optional(), items: z.array(metricSong).optional(), page: cursorPage.optional(), errors: z.array(error).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 songs (premium)
 * 
 * POST /api/v2/top/songs
 */
export const createApiApiV2TopSongs = async (args: CreateApiApiV2TopSongsArgs, options: CreateApiApiV2TopSongsOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.offset != null) query.append("offset", String(args.offset))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.cursor != null) query.append("cursor", String(args.cursor))

const url = `${baseUrl.replace(/\/+$/, '')}/api/v2/top/songs${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

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

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