import {z} from 'zod'

export type GetApiApiVaccinationsNextDoseArgs = {patientId?: string | undefined, vaccineTypeId?: string | undefined, administeredDate?: string | undefined};

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

export const nextDoseSuggestionDto = z.object({vaccineTypeId: z.string().optional(), hasSchedule: z.boolean().optional(), stageSequence: z.union([z.number().int(), z.string()]).optional(), stageCount: z.union([z.number().int(), z.string()]).optional(), stageLabel: z.string().nullable().optional(), isSeriesRestart: z.boolean().optional(), isSeriesComplete: z.boolean().optional(), isRabies: z.boolean().optional(), suggestedIntervalDays: z.union([z.number().int(), z.string()]).nullable().optional(), suggestedIntervalMaxDays: z.union([z.number().int(), z.string()]).nullable().optional(), suggestedDurationMonths: z.union([z.number().int(), z.string()]).nullable().optional(), suggestedDurationDays: z.union([z.number().int(), z.string()]).nullable().optional(), labeledDurationMonths: z.union([z.number().int(), z.string()]).optional(), durationOptionsMonths: z.array(z.union([z.number().int(), z.string()])).optional(), suggestedNextDueDate: z.string().nullable().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
};

/**
 * Suggest the schedule stage and next-due date for a dose being administered — which dose of
 * the series this is, and when the next one is due (generalizes the rabies 1-vs-3-year rule).
 * 
 * GET /api/Vaccinations/next-dose
 */
export const getApiApiVaccinationsNextDose = async (args: GetApiApiVaccinationsNextDoseArgs, options?: GetApiApiVaccinationsNextDoseOptions) => {
const {baseUrl = "https://api.clinicos.vet/backend/business", fetch: fetchFn = fetch, Bearer} = options ?? {}

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

if (args.patientId != null) query.append("patientId", String(args.patientId))
if (args.vaccineTypeId != null) query.append("vaccineTypeId", String(args.vaccineTypeId))
if (args.administeredDate != null) query.append("administeredDate", String(args.administeredDate))
if (Bearer !== undefined) headers.set('authorization', `Bearer ${Bearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/api/Vaccinations/next-dose${query.size > 0 ? `?${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(nextDoseSuggestionDto, await res.json())
};