import {z} from 'zod'

export type GetApiPatientsPatientIdWeightsArgs = {patient_id: number, date_since?: string | undefined, date_until?: string | undefined};

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

export const patientWeightResponse = z.object({id: z.number().int(), note: z.string().nullable().optional(), source: z.enum(["healthkit", "healthconnect"]).nullable().optional(), source_id: z.string().nullable().optional(), weight_date: z.string().nullable(), weight_kg: z.number(), weight_time: z.string().nullable()});

export const patientWeightListResponse = z.object({has_more: z.boolean(), weights: z.array(patientWeightResponse)});

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 up to 100 most recent weights of a patient in descending timestamp order
 * 
 * GET /patients/{patient_id}/weights
 */
export const getApiPatientsPatientIdWeights = async (args: GetApiPatientsPatientIdWeightsArgs, options: GetApiPatientsPatientIdWeightsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (args.date_since != null) query.append("date_since", String(args.date_since))
if (args.date_until != null) query.append("date_until", String(args.date_until))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/patients/${encodeURIComponent(String(args.patient_id))}/weights${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(patientWeightListResponse, await res.json())
};