import {z} from 'zod'

export type GetApiV1LedgersLedgerIdFeesArgs = {ledgerId: string};

export type GetApiV1LedgersLedgerIdFeesOptions = {baseUrl: string, httpAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const coreBitcoinFee = z.object({satoshiPerVbyte: z.string()});

export const coreCurrentFeesBitcoin = z.object({high: coreBitcoinFee, medium: coreBitcoinFee, low: coreBitcoinFee, type: z.literal("Bitcoin")});

export const coreEthereumEIP1559Prices = z.object({basePrice: z.string(), priorityPrice: z.string()});

export const coreEthereumFee = z.object({gasPrice: z.string(), eip1559Prices: coreEthereumEIP1559Prices.optional()});

export const coreCurrentFeesEthereum = z.object({high: coreEthereumFee, medium: coreEthereumFee, low: coreEthereumFee, type: z.literal("Ethereum")});

export const coreStellarFee = z.object({baseFeeStroops: z.string()});

export const coreCurrentFeesStellar = z.object({high: coreStellarFee, medium: coreStellarFee, low: coreStellarFee, type: z.literal("Stellar")});

export const coreXrplFee = z.object({multiplier: z.string()});

export const coreCurrentFeesXRPL = z.object({high: coreXrplFee, medium: coreXrplFee, low: coreXrplFee, type: z.literal("XRPL")});

export const coreCurrentFees = z.discriminatedUnion("type", [coreCurrentFeesBitcoin, coreCurrentFeesEthereum, coreCurrentFeesStellar, coreCurrentFeesXRPL]);

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 ledger's fee details
 * 
 * GET /v1/ledgers/{ledgerId}/fees
 */
export const getApiV1LedgersLedgerIdFees = async (args: GetApiV1LedgersLedgerIdFeesArgs, options: GetApiV1LedgersLedgerIdFeesOptions) => {
const {baseUrl, fetch: fetchFn = fetch, httpAuth} = options ?? {}

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

if (httpAuth !== undefined) headers.set('authorization', `Bearer ${httpAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/ledgers/${encodeURIComponent(String(args.ledgerId))}/fees${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(coreCurrentFees, await res.json())
};