import {z} from 'zod'

export type UUID = string;

export type TinyText = string;

export type ShippingInfo = {return_shipping_company: unknown, return_tracking_number: unknown, return_tracking_url: unknown, shipping_company: unknown, shipping_method: unknown, tracking_number: unknown, tracking_url: unknown};

export type AmountDTO = {gross: number, net: number, tax: number};

export type LineItemsRequest = {external_id?: (string | null) | undefined, title?: TinyText | undefined, description?: (string | null) | undefined, quantity?: number | undefined, category?: (string | null) | undefined, brand?: (string | null) | undefined, gtin?: (string | null) | undefined, mpn?: (string | null) | undefined, amount_gross?: number | undefined, amount_net?: (number | null) | undefined, amount_tax?: (number | null) | undefined, tax_rate?: (number | null) | undefined, unit_price?: number | undefined, total_discount_amount?: (number | null) | undefined, product_url?: (string | null) | undefined, image_url?: (string | null) | undefined, quantity_unit?: (string | null) | undefined, type?: (string | null) | undefined};

export type CreateInvoiceRequest = {orders: Array<UUID>, external_code: TinyText, invoice_url: TinyText, shipping_info?: ShippingInfo | undefined, amount: AmountDTO, line_items?: Array<LineItemsRequest> | undefined};

export type CreateApiInvoicesArgs = {body: CreateInvoiceRequest};

export type CreateApiInvoicesOptions = {baseUrl?: string | undefined, oauth2?: string | undefined, fetch?: typeof fetch | undefined};

export const uUID = z.string().min(36).max(36);

export const createApiInvoicesResponse = z.object({uuid: uUID});

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 Invoice
 * 
 * POST /invoices
 */
export const createApiInvoices = async (args: CreateApiInvoicesArgs, options?: CreateApiInvoicesOptions) => {
const {baseUrl = "https://paella-sandbox.billie.io/api/v2", fetch: fetchFn = fetch, oauth2} = options ?? {}

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

if (oauth2 !== undefined) headers.set('authorization', `Bearer ${oauth2}`)

const url = `${baseUrl.replace(/\/+$/, '')}/invoices${query.size > 0 ? `?${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(createApiInvoicesResponse, await res.json())
};