import {z} from 'zod'

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

export const feeAmountType = z.enum(["FLAT", "PERCENT"]);

export const feeType = z.enum(["RECURRING", "ONE_TIME", "AD_HOC"]);

export const recurringFrequency = z.enum(["DAILY", "WEEKLY", "MONTHLY", "YEARLY"]);

export const cardUsageFee = z.object({amount: z.number().gte(0), amountType: feeAmountType.optional(), frequency: feeType.optional(), recurrenceCount: z.number().int().gte(0).optional(), recurrenceFrequency: recurringFrequency.optional(), minValue: z.number().gte(0).optional(), maxValue: z.number().gte(0).optional(), fixedValue: z.number().gte(0).optional()});

export const cardFeeSchedule = z.object({packageId: z.string(), creationFee: cardUsageFee, fundingFee: cardUsageFee, withdrawalFee: cardUsageFee, fxTransactionFee: cardUsageFee, transactionFee: cardUsageFee, maintenanceFee: cardUsageFee, minFundingAmount: z.number().gte(0), minTopUpAmount: z.number().gte(0), maxTopUpAmount: z.number().gte(0), minimumBalance: z.number().gte(0)});

export const cardLifetimeLimit = z.object({limit: z.number().int().gte(1), currentCount: z.number().int().gte(0), remaining: z.number().int().gte(0)});

export const cardPackage = z.object({id: z.string(), currency: z.string(), fees: cardFeeSchedule, lifetimeLimit: cardLifetimeLimit});

export const cardPackageList = z.object({packages: z.array(cardPackage)});

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 available card packages.
 * 
 * GET /ledger/card-packages
 */
export const getApiLedgerCardPackages = async (options?: GetApiLedgerCardPackagesOptions) => {
const {baseUrl = "https://external.dev.onboardpay.co", fetch: fetchFn = fetch, HMACAuth} = options ?? {}

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

if (HMACAuth !== undefined) headers.set("x-api-key", HMACAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/ledger/card-packages${query.size > 0 ? `?${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(cardPackageList, await res.json())
};