import {z} from 'zod'

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

export const user = z.object({id: z.string().optional(), td_user_id: z.string().optional(), name: z.string().optional()});

export const scheduleType = z.enum(["cron", "daily", "hourly", "minutes_interval", "monthly", "none", "weekly"]);

export const getApiMasterSegmentsResponse = z.array(z.object({id: z.string().optional(), name: z.string().optional(), description: z.string().optional(), population: z.number().nullable().optional(), updatedAt: z.string().optional(), updatedBy: user.optional(), matrixUpdatedAt: z.string().nullable().optional(), scheduleType: scheduleType.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
};

/**
 * Retrieve audience data
 * 
 * GET /master_segments
 */
export const getApiMasterSegments = async (options?: GetApiMasterSegmentsOptions) => {
const {baseUrl = "https://api-cdp.treasuredata.com", fetch: fetchFn = fetch} = options ?? {}

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

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