import {z} from 'zod'

export type CreateMedicationRequestDto = {patientId?: string | undefined, inventoryItemId?: string | undefined, medicationCategory?: (string | null) | undefined, providerId?: (string | null) | undefined, quantity?: (number | unknown) | undefined, dosage?: (string | null) | undefined, frequency?: (string | null) | undefined, duration?: (string | null) | undefined, instructions?: (string | null) | undefined, refillsAllowed?: (number | unknown) | undefined, refillsPrn?: (boolean | null) | undefined, validUntil?: (string | null) | undefined, medicationExpirationDate?: (string | null) | undefined, isOtc?: boolean | undefined, fulfillmentMethod?: string | undefined, pharmacyId?: (string | null) | undefined, notes?: (string | null) | undefined, invoiceId?: (string | null) | undefined, estimateId?: (string | null) | undefined, createNewEstimate?: boolean | undefined, isCascade?: (boolean | null) | undefined, cascadeReason?: (string | null) | undefined, antimicrobialUseType?: (string | null) | undefined, antimicrobialJustification?: (string | null) | undefined, clinicalAssessmentPerformed?: (boolean | null) | undefined, physicalExamPerformed?: (boolean | null) | undefined, physicalExamJustification?: (string | null) | undefined, repeatCount?: (number | unknown | null) | undefined, withdrawalPeriod?: (string | null) | undefined, collectorName?: (string | null) | undefined, collectorIdChecked?: (boolean | null) | undefined, overrideValidation?: boolean | undefined, overrideReason?: (string | null) | undefined};

export type CreateApiRxGovernanceRequestArgs = {body: CreateMedicationRequestDto};

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

export const medicationRequestResultDto = z.object({success: z.boolean().optional(), prescriptionId: z.string().nullable().optional(), transactionId: z.string().nullable().optional(), patientId: z.string().optional(), message: z.string().optional(), invoiceLineItemId: z.string().nullable().optional(), invoiceId: z.string().nullable().optional(), estimateId: z.string().nullable().optional(), estimateLineItemId: z.string().nullable().optional(), medicationRequestId: z.string().nullable().optional(), requestStatus: 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
};

/**
 * Create a new medication request (prescription or OTC). This is the compound
 * walk-up operation: capture, approve, and dispense are applied in one call, each
 * step gated by the caller's permissions (design §4). A front-desk caller with only
 * the Inventory permission stops at Requested; a provider's submit collapses to
 * today's one-step flow.
 * 
 * POST /rx/governance/request
 */
export const createApiRxGovernanceRequest = async (args: CreateApiRxGovernanceRequestArgs, options?: CreateApiRxGovernanceRequestOptions) => {
const {baseUrl = "https://api.clinicos.vet/backend/business", fetch: fetchFn = fetch, Bearer} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/rx/governance/request${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(medicationRequestResultDto, await res.json())
};