import {z} from 'zod'

export type DeleteApiTransactionsArgs = {account_id: string, customer_id: string, keep_days: number};

export type DeleteApiTransactionsOptions = {baseUrl?: string | undefined, appId?: string | undefined, secret?: string | undefined, fetch?: typeof fetch | undefined};

export const removedTransactionsResponse = z.object({data: z.object({cleanup_started: z.boolean().optional()}).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
};

/**
 * Remove transactions
 * 
 * DELETE /transactions
 */
export const deleteApiTransactions = async (args: DeleteApiTransactionsArgs, options?: DeleteApiTransactionsOptions) => {
const {baseUrl = "https://www.saltedge.com/api/v5", fetch: fetchFn = fetch, appId, secret} = options ?? {}

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

if (args.account_id != null) query.append("account_id", String(args.account_id))
if (args.customer_id != null) query.append("customer_id", String(args.customer_id))
if (args.keep_days != null) query.append("keep_days", String(args.keep_days))
if (appId !== undefined) headers.set("App-id", appId)
if (secret !== undefined) headers.set("Secret", secret)

const url = `${baseUrl.replace(/\/+$/, '')}/transactions${query.size > 0 ? `?${query}` : ''}`

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

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

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