import {z} from 'zod'

export type GetApiV3UsersCardioLoadDateArgs = {from: string, to: string};

export type GetApiV3UsersCardioLoadDateOptions = {baseUrl?: string | undefined, OAuth2?: string | undefined, fetch?: typeof fetch | undefined};

export const cardioLoadStatusEnum = z.enum(["LOAD_STATUS_NOT_AVAILABLE", "DETRAINING", "MAINTAINING", "PRODUCTIVE", "OVERREACHING", "RECOVERY_AFTER_OVERREACHING", "PRODUCTIVE_DROPPED_FROM_OVERREACHING", "PRODUCTIVE_ALMOST_OVERREACHING", "UNRECOGNIZED"]);

export const cardioLoadLevels = z.object({very_low: z.number().optional(), low: z.number().optional(), medium: z.number().optional(), high: z.number().optional(), "very-high": z.number().optional()});

export const cardioLoad = z.object({date: z.string().optional(), cardio_load_status: cardioLoadStatusEnum.optional(), cardio_load: z.number().optional(), strain: z.number().optional(), tolerance: z.number().optional(), cardio_load_ratio: z.number().optional(), cardio_load_level: cardioLoadLevels.optional()});

export const cardioLoadSchema = z.array(cardioLoad);

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 cardio load by date range
 * 
 * GET /v3/users/cardio-load/date
 */
export const getApiV3UsersCardioLoadDate = async (args: GetApiV3UsersCardioLoadDateArgs, options?: GetApiV3UsersCardioLoadDateOptions) => {
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 (args.from != null) query.append("from", String(args.from))
if (args.to != null) query.append("to", String(args.to))
if (OAuth2 !== undefined) headers.set('authorization', `Bearer ${OAuth2}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v3/users/cardio-load/date${query.size > 0 ? `?${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(cardioLoadSchema, await res.json())
};