import {z} from 'zod'

export type GetApiV1DeltasFundingsArgs = {payorId: string, updatedSince: string, page?: number | undefined, pageSize?: number | undefined};

export type GetApiV1DeltasFundingsOptions = {baseUrl?: string | undefined, OAuth2?: string | undefined, fetch?: typeof fetch | undefined};

export const linkForResponse = z.object({rel: z.string().optional(), href: z.string().optional()});

export const pageForResponse = z.object({numberOfElements: z.number().int().optional(), totalElements: z.number().int().optional(), totalPages: z.number().int().optional(), page: z.number().int().optional(), pageSize: z.number().int().optional()});

export const fundingPayorStatusAuditResponse = z.object({fundingId: z.string().optional(), amount: z.number().int().optional(), currency: z.string().min(3).max(3).optional(), status: z.string().optional()});

export const pageResourceFundingPayorStatusAuditResponseFundingPayorStatusAuditResponse = z.object({links: z.array(linkForResponse).optional(), page: pageForResponse.optional(), content: z.array(fundingPayorStatusAuditResponse).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
};

/**
 * Get Funding Audit Delta
 * 
 * GET /v1/deltas/fundings
 */
export const getApiV1DeltasFundings = async (args: GetApiV1DeltasFundingsArgs, options?: GetApiV1DeltasFundingsOptions) => {
const {baseUrl = "https://api.sandbox.velopayments.com", fetch: fetchFn = fetch, OAuth2} = options ?? {}

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

if (args.payorId != null) query.append("payorId", String(args.payorId))
if (args.updatedSince != null) query.append("updatedSince", String(args.updatedSince))
if (args.page != null) query.append("page", String(args.page))
if (args.pageSize != null) query.append("pageSize", String(args.pageSize))
if (OAuth2 !== undefined) headers.set('authorization', `Bearer ${OAuth2}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/deltas/fundings${query.size > 0 ? `?${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(pageResourceFundingPayorStatusAuditResponseFundingPayorStatusAuditResponse, await res.json())
};