import {z} from 'zod'

export type CurrencyCode = string;

export type MonetaryAmount = {amount: string, currency: CurrencyCode};

export type CreditMemoItemPriceRequest = {product_id: string, quantity: number, amount_per_unit: MonetaryAmount};

export type CalendarPeriod = {start: string, end: string};

export type RevenuePattern = 'DAILY' | 'EVEN_PERIOD' | 'PROGRESS';

export type AccountCode = string;

export type ItemRevenue = {period?: CalendarPeriod | undefined, pattern?: RevenuePattern | undefined, account_code?: AccountCode | undefined};

export type RoundedMonetaryAmount = {amount: string, currency: CurrencyCode};

export type CountryCode = string;

export type TaxRateWithOptionalAmountAndCode = {percentage: unknown, tax_amount?: RoundedMonetaryAmount | undefined, country: CountryCode, type: 'VAT' | 'SALES_TAX', description: string};

export type FieldAssignments = Array<{field_id: string, field_value_id: string}>;

export type CreateCreditMemoItemRequest = {description: string, price: CreditMemoItemPriceRequest, revenue?: ItemRevenue | undefined, tax_rate?: TaxRateWithOptionalAmountAndCode | undefined, fields?: FieldAssignments | undefined};

export type ExternalReference = {type: string, id: string, url?: string | undefined};

export type ExchangeRate = {base: CurrencyCode, target: CurrencyCode, rate: string, date: string};

export type CreateCreditMemoRequest = {credit_memo_number?: string | undefined, customer_id: string, subsidiary_id?: string | undefined, credit_memo_date: string, items: Array<CreateCreditMemoItemRequest>, external_references?: Array<ExternalReference> | undefined, exchange_rate?: ExchangeRate | undefined};

export type CreateApiCreditMemosArgs = {body: CreateCreditMemoRequest};

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

export const calendarPeriod = z.object({start: z.string(), end: z.string()});

export const revenuePattern = z.enum(["DAILY", "EVEN_PERIOD", "PROGRESS"]);

export const accountCode = z.string();

export const itemRevenue = z.object({period: calendarPeriod.optional(), pattern: revenuePattern.optional(), account_code: accountCode.optional()});

export const currencyCode = z.string();

export const roundedMonetaryAmount = z.object({amount: z.string(), currency: currencyCode});

export const fieldAssignments = z.array(z.object({field_id: z.string(), field_value_id: z.string()}));

export const creditMemoItem = z.object({id: z.string(), description: z.string(), revenue: itemRevenue, total_amount: roundedMonetaryAmount, taxed_amount: roundedMonetaryAmount.optional(), net_amount: roundedMonetaryAmount, quantity: z.string(), product_id: z.string(), fields: fieldAssignments.optional()});

export const countryCode = z.string();

export const address = z.object({line1: z.string(), line2: z.string().nullable().optional(), city: z.string(), state: z.string().nullable().optional(), zip_code: z.string(), country: countryCode});

export const creditMemoApplication = z.object({id: z.string(), credit_memo_id: z.string(), invoice_id: z.string(), invoice_number: z.string().optional(), amount: roundedMonetaryAmount, application_date: z.string()});

export const exchangeRate = z.object({base: currencyCode, target: currencyCode, rate: z.string(), date: z.string()});

export const externalReference = z.object({type: z.string(), id: z.string(), url: z.string().optional()});

export const creditMemo = z.object({id: z.string(), subsidiary_id: z.string(), credit_memo_number: z.string(), customer_id: z.string(), items: z.array(creditMemoItem), credit_memo_date: z.string(), address: address, status: z.enum(["UNAPPLIED", "PARTIALLY_APPLIED", "APPLIED", "REFUNDED"]), net_amount: roundedMonetaryAmount, total: roundedMonetaryAmount, applied_amount: roundedMonetaryAmount, remaining_amount: roundedMonetaryAmount, applications: z.array(creditMemoApplication), exchange_rate: exchangeRate.optional(), taxed_amount: roundedMonetaryAmount, external_references: z.array(externalReference).optional(), updated_at: z.string()});

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
};

/**
 * Creates a credit memo
 * 
 * POST /credit-memos
 */
export const createApiCreditMemos = async (args: CreateApiCreditMemosArgs, options?: CreateApiCreditMemosOptions) => {
const {baseUrl = "https://api.rillet.com", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

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

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