import {z} from 'zod'

export type GetApiRefundsArgs = {Authorization: string, 'Sub-Account'?: string | undefined};

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

export const returnedFeeResponse = z.object({id: z.string(), payment_fee_id: z.string(), type: z.enum(["processing_fee", "platform_fee"]), returned_amount: z.number().int(), original_amount: z.number().int(), currency: z.string(), remaining_amount: z.number().int()});

export const refund = z.object({id: z.string().optional(), payment_id: z.string().optional(), amount: z.number().optional(), description: z.string().optional(), reason: z.enum(["duplicate", "fraudulent", "customer_request"]).optional(), status: z.enum(["pending", "succeeded", "failed"]).optional(), metadata: z.object({}).optional(), returned_fees: z.array(returnedFeeResponse).optional(), created_at: z.string().optional(), updated_at: z.string().optional()});

export const pageInfo = z.object({end_cursor: z.string().optional(), has_next: z.boolean().optional(), has_previous: z.boolean().optional(), start_cursor: z.string().optional()});

export const getApiRefundsResponse = z.object({id: z.number().optional(), type: z.string().optional(), data: z.array(refund).optional(), page_info: pageInfo.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 Refunds
 * 
 * GET /refunds
 */
export const getApiRefunds = async (args: GetApiRefundsArgs, options?: GetApiRefundsOptions) => {
const {baseUrl = "https://api.justifi.ai/v1", fetch: fetchFn = fetch} = options ?? {}

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

if (args.Authorization != null) headers.set("Authorization", String(args.Authorization))
if (args['Sub-Account'] != null) headers.set("Sub-Account", String(args['Sub-Account']))

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