import {z} from 'zod'

export type CreateApiEstimatesIdItemsPopulateDefaultsArgs = {id: string};

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

export const estimateAppliedDiscountDto = z.object({id: z.string().optional(), estimateLineItemId: z.string().nullable().optional(), discountPolicyId: z.string().optional(), discountCode: z.string().optional(), discountName: z.string().optional(), discountType: z.string().optional(), discountValue: z.union([z.number(), z.string()]).optional(), maxDiscountAmount: z.union([z.number(), z.string()]).nullable().optional(), appliedById: z.string().optional(), appliedByName: z.string().nullable().optional(), appliedAt: z.string().optional()});

export const estimateLineItemDto = z.object({id: z.string().optional(), serviceCatalogItemId: z.string().nullable().optional(), retailItemId: z.string().nullable().optional(), inventoryItemId: z.string().nullable().optional(), billableItemId: z.string().nullable().optional(), code: z.string().optional(), description: z.string().optional(), unitPrice: z.union([z.number(), z.string()]).optional(), qtyMode: z.string().optional(), qtyLow: z.union([z.number(), z.string()]).optional(), qtyMed: z.union([z.number(), z.string()]).optional(), qtyHigh: z.union([z.number(), z.string()]).optional(), quantity: z.union([z.number(), z.string()]).optional(), isFlatRate: z.boolean().optional(), dispensedQuantity: z.union([z.number(), z.string()]).nullable().optional(), isTaxable: z.boolean().optional(), vatCategory: z.string().nullable().optional(), note: z.string().nullable().optional(), displayOrder: z.union([z.number().int(), z.string()]).optional(), groupId: z.string().nullable().optional(), createdByAi: z.boolean().optional(), groupCodeId: z.string().nullable().optional(), groupCodeName: z.string().nullable().optional(), kitInstanceId: z.string().nullable().optional(), serviceType: z.string().optional(), inventoryItemCategory: z.string().nullable().optional(), executionStatus: z.string().optional(), disposition: z.string().nullable().optional(), requiresSig: z.boolean().optional(), markedForBilling: z.boolean().optional(), dispenseFee: z.union([z.number(), z.string()]).optional(), unitCost: z.union([z.number(), z.string()]).nullable().optional(), inventoryTransactionId: z.string().nullable().optional(), performedById: z.string().nullable().optional(), performedByName: z.string().nullable().optional(), performedAt: z.string().nullable().optional(), declinedReason: z.string().nullable().optional(), declinedAt: z.string().nullable().optional(), isControlledSubstance: z.boolean().optional(), lineTotal: z.union([z.number(), z.string()]).optional(), discount: z.union([z.number(), z.string()]).optional(), discountSetById: z.string().nullable().optional(), discountSetByName: z.string().nullable().optional(), discountSetAt: z.string().nullable().optional(), appliedDiscount: estimateAppliedDiscountDto.nullable().optional(), discountAmount: z.union([z.number(), z.string()]).optional(), originalUnitPrice: z.union([z.number(), z.string()]).nullable().optional(), priceOverriddenById: z.string().nullable().optional(), priceOverriddenByName: z.string().nullable().optional(), priceOverriddenAt: z.string().nullable().optional()});

export const populateEstimateDefaultsResponse = z.object({itemsAdded: z.union([z.number().int(), z.string()]).optional(), items: z.array(estimateLineItemDto).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
};

/**
 * Seed the estimate's lines from its appointment type's default services. Rebuilds the
 * retired appointment-services "populate-defaults" onto the estimate line: each active
 * default service becomes a Pending line. The dispense fee is charged once per unique
 * inventory item across the whole estimate (existing lines count), matching the old behaviour.
 * No-op (ItemsAdded = 0) when the estimate has no appointment, the appointment has no type,
 * or the type has no active default services.
 * 
 * POST /Estimates/{id}/items/populate-defaults
 */
export const createApiEstimatesIdItemsPopulateDefaults = async (args: CreateApiEstimatesIdItemsPopulateDefaultsArgs, options?: CreateApiEstimatesIdItemsPopulateDefaultsOptions) => {
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 (Bearer !== undefined) headers.set('authorization', `Bearer ${Bearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/Estimates/${encodeURIComponent(String(args.id))}/items/populate-defaults${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers})

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

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