import {z} from 'zod'

export type GetApiTransactionsArgs = {start?: string | undefined, end?: string | undefined, page?: number | undefined, itemsPerPage?: number | undefined};

export type GetApiTransactionsOptions = {baseUrl?: string | undefined, BasicAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const transaction = z.object({id: z.string().optional(), integration: z.string().optional(), srcId: z.string().optional(), transactionType: z.string().nullable().optional(), success: z.string().nullable().optional(), amount: z.number().int().nullable().optional(), description: z.string().nullable().optional(), transactionId: z.string().nullable().optional(), paymentId: z.string().nullable().optional(), productId: z.string().nullable().optional(), taxId: z.string().nullable().optional(), componentId: z.string().nullable().optional(), statementId: z.string().nullable().optional(), customerId: z.string().nullable().optional(), created: z.string().nullable().optional(), status: z.string().nullable().optional(), fee: z.number().int().nullable().optional(), netAmount: z.number().int().nullable().optional(), txnDate: z.string().nullable().optional()});

export const getApiTransactionsResponse = z.array(transaction);

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
};

/**
 * Retrieves a Collection of transaction resources
 * 
 * GET /transactions
 */
export const getApiTransactions = async (args: GetApiTransactionsArgs, options?: GetApiTransactionsOptions) => {
const {baseUrl = "https://example.myintranetapps.com/api", fetch: fetchFn = fetch, BasicAuth} = options ?? {}

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

if (args.start != null) query.append("start", String(args.start))
if (args.end != null) query.append("end", String(args.end))
if (args.page != null) query.append("page", String(args.page))
if (args.itemsPerPage != null) query.append("itemsPerPage", String(args.itemsPerPage))
if (BasicAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${BasicAuth.username}:${BasicAuth.password}`)}`)

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