import {z} from 'zod'

export type Month = 'JANUARY' | 'FEBRUARY' | 'MARCH' | 'APRIL' | 'MAY' | 'JUNE' | 'JULY' | 'AUGUST' | 'SEPTEMBER' | 'OCTOBER' | 'NOVEMBER' | 'DECEMBER';

export type StatementFileType = 'PDF' | 'XLSX' | 'CSV';

export type ISO4217SupportedCurrency = 'EUR' | 'GBP' | 'USD';

export type DownloadStatement = {year: number, month: Month, file_type: StatementFileType, currency: ISO4217SupportedCurrency};

export type CreateApiBusinessV2StatementsDownloadArgs = {body: DownloadStatement};

export type CreateApiBusinessV2StatementsDownloadOptions = {baseUrl?: string | undefined, standardAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const statementDownloadUrl = z.object({presigned_url: z.string().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
};

/**
 * Download Statement
 * 
 * POST /business/v2/statements/download
 */
export const createApiBusinessV2StatementsDownload = async (args: CreateApiBusinessV2StatementsDownloadArgs, options?: CreateApiBusinessV2StatementsDownloadOptions) => {
const {baseUrl = "https://api.soldo.com", fetch: fetchFn = fetch, standardAuth} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/business/v2/statements/download${query.size > 0 ? `?${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(statementDownloadUrl, await res.json())
};