import {z} from 'zod'

export type GetApiTransactionsPendingArgs = {account_id?: string | undefined, from_id?: string | undefined, connection_id: string};

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

export const transactionExtra = z.object({account_balance_snapshot: z.number().optional(), account_number: z.string().optional(), additional: z.string().optional(), asset_amount: z.number().optional(), asset_code: z.string().optional(), categorization_confidence: z.number().optional(), check_number: z.string().optional(), closing_balance: z.number().optional(), constant_code: z.string().optional(), convert: z.boolean().optional(), customer_category_code: z.string().optional(), customer_category_name: z.string().optional(), exchange_rate: z.object({}).optional(), id: z.string().optional(), end_to_end_id: z.string().optional(), information: z.string().optional(), mcc: z.string().optional(), merchant_id: z.string().optional(), opening_balance: z.number().optional(), original_amount: z.number().optional(), original_category: z.string().optional(), original_currency_code: z.string().optional(), original_subcategory: z.string().optional(), payee: z.string().optional(), payee_information: z.string().optional(), payer: z.string().optional(), payer_information: z.string().optional(), possible_duplicate: z.boolean().optional(), posted_by_aspsp: z.boolean().optional(), posting_date: z.string().optional(), posting_time: z.string().optional(), record_number: z.string().optional(), specific_code: z.string().optional(), tags: z.array(z.string()).optional(), time: z.string().optional(), transfer_account_name: z.string().optional(), type: z.string().optional(), unit_price: z.number().optional(), units: z.number().optional(), variable_code: z.string().optional()});

export const transaction = z.object({id: z.string(), mode: z.enum(["normal", "fee", "transfer"]), status: z.enum(["posted", "pending"]), made_on: z.string(), amount: z.number(), currency_code: z.string(), description: z.string(), category: z.string(), duplicated: z.boolean(), extra: transactionExtra, account_id: z.string(), created_at: z.string(), updated_at: z.string()});

export const metaObject = z.object({next_id: z.string().optional(), next_page: z.string().optional()});

export const transactionsResponse = z.object({data: z.array(transaction).optional(), meta: metaObject.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
};

/**
 * List of pending transactions
 * 
 * GET /transactions/pending
 */
export const getApiTransactionsPending = async (args: GetApiTransactionsPendingArgs, options?: GetApiTransactionsPendingOptions) => {
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.from_id != null) query.append("from_id", String(args.from_id))
if (args.connection_id != null) query.append("connection_id", String(args.connection_id))
if (appId !== undefined) headers.set("App-id", appId)
if (secret !== undefined) headers.set("Secret", secret)

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

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

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

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