import {z} from 'zod'

export type GetApiV3UsersSleepwiseAlertnessOptions = {baseUrl?: string | undefined, OAuth2?: string | undefined, fetch?: typeof fetch | undefined};

export const alertnessHourlyData = z.object({validity: z.enum(["VALIDITY_UNKNOWN", "VALIDITY_RESET", "VALIDITY_NOT_VALID", "VALIDITY_ESTIMATE", "VALIDITY_VALID"]).optional(), alertness_level: z.enum(["ALERTNESS_LEVEL_UNKNOWN", "ALERTNESS_LEVEL_MINIMAL", "ALERTNESS_LEVEL_VERY_LOW", "ALERTNESS_LEVEL_LOW", "ALERTNESS_LEVEL_HIGH", "ALERTNESS_LEVEL_VERY_HIGH"]).optional(), start_time: z.string().optional(), end_time: z.string().optional()});

export const alertness = z.object({grade: z.number().optional(), grade_validity_seconds: z.number().int().optional(), grade_type: z.enum(["GRADE_TYPE_UNKNOWN", "GRADE_TYPE_PRIMARY", "GRADE_TYPE_ADDITIONAL"]).optional(), grade_classification: z.enum(["GRADE_CLASSIFICATION_UNKNOWN", "GRADE_CLASSIFICATION_WEAK", "GRADE_CLASSIFICATION_FAIR", "GRADE_CLASSIFICATION_STRONG", "GRADE_CLASSIFICATION_EXCELLENT"]).optional(), validity: z.enum(["VALIDITY_UNKNOWN", "VALIDITY_RESET", "VALIDITY_NOT_VALID", "VALIDITY_ESTIMATE", "VALIDITY_VALID"]).optional(), sleep_inertia: z.enum(["SLEEP_INERTIA_UNKNOWN", "SLEEP_INERTIA_NO_INERTIA", "SLEEP_INERTIA_MILD", "SLEEP_INERTIA_MODERATE", "SLEEP_INERTIA_HEAVY"]).optional(), sleep_type: z.enum(["SLEEP_TYPE_UNKNOWN", "SLEEP_TYPE_PRIMARY", "SLEEP_TYPE_SECONDARY", "SLEEP_TYPE_ARTIFICIAL"]).optional(), result_type: z.enum(["ALERTNESS_TYPE_UNKNOWN", "ALERTNESS_TYPE_PREDICTION", "ALERTNESS_TYPE_HISTORY"]).optional(), period_start_time: z.string().optional(), period_end_time: z.string().optional(), sleep_period_start_time: z.string().optional(), sleep_period_end_time: z.string().optional(), sleep_timezone_offset_minutes: z.number().int().optional(), hourly_data: z.array(alertnessHourlyData).optional()});

export const getApiV3UsersSleepwiseAlertnessResponse = z.array(alertness);

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
};

/**
 * Alertness period data (last 28 days)
 * 
 * GET /v3/users/sleepwise/alertness
 */
export const getApiV3UsersSleepwiseAlertness = async (options?: GetApiV3UsersSleepwiseAlertnessOptions) => {
const {baseUrl = "https://www.polaraccesslink.com", fetch: fetchFn = fetch, OAuth2} = options ?? {}

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

if (OAuth2 !== undefined) headers.set('authorization', `Bearer ${OAuth2}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v3/users/sleepwise/alertness${query.size > 0 ? `?${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(getApiV3UsersSleepwiseAlertnessResponse, await res.json())
};