import {z} from 'zod'

export type CurrencyCode = string;

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

export type AccountCode = string;

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

export type JournalEntryItemRequest = {description?: string | undefined, amount: RoundedMonetaryAmount, account_code: AccountCode, side: 'DEBIT' | 'CREDIT', fields?: FieldAssignments | undefined, vat_code?: string | undefined, vat_type?: string | undefined};

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

export type JournalEntryRelatedEntity = {id: string, type: 'CUSTOMER' | 'VENDOR'};

export type CreateJournalEntryRequest = {name: string, currency: CurrencyCode, items: Array<JournalEntryItemRequest>, date: string, reversal_date?: string | undefined, attachmentUrl?: string | undefined, exchange_rate?: ExchangeRate | undefined, subsidiary_id?: string | undefined, related_entity?: JournalEntryRelatedEntity | undefined, book_id?: string | undefined};

export type CreateApiJournalEntriesArgs = {body: CreateJournalEntryRequest};

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

export const currencyCode = z.string();

export const journalEntryRelatedEntity = z.object({id: z.string(), type: z.enum(["CUSTOMER", "VENDOR"])});

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

export const accountCode = z.string();

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

export const journalEntryItem = z.object({id: z.string(), description: z.string().optional(), amount: roundedMonetaryAmount, original_transaction_amount: roundedMonetaryAmount.nullable().optional(), account_id: z.string(), account_code: accountCode, side: z.enum(["DEBIT", "CREDIT"]), fields: fieldAssignments.optional()});

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

export const journalEntry = z.object({id: z.string(), book_id: z.string(), subsidiary_id: z.string().optional(), name: z.string(), currency: currencyCode, related_entity: journalEntryRelatedEntity.optional(), items: z.array(journalEntryItem), date: z.string(), reversal_date: z.string().optional(), attachmentUrl: z.string().optional(), exchange_rate: exchangeRate.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 journal entry
 * 
 * POST /journal-entries
 */
export const createApiJournalEntries = async (args: CreateApiJournalEntriesArgs, options?: CreateApiJournalEntriesOptions) => {
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 = `${baseUrl.replace(/\/+$/, '')}/journal-entries${query.size > 0 ? `?${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(journalEntry, await res.json())
};