import {z} from 'zod'

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

export const utxoSelectionStrategyEnum = z.enum(["ASC", "DESC", "ADAPTIVE"]);

export const utxoSelectionConfigEntry = z.object({strategy: utxoSelectionStrategyEnum, updatedAt: z.string()});

export const utxoSelectionConfigSourceEnum = z.enum(["DEFAULT", "WORKSPACE", "VAULT_ASSET"]);

export const effectiveUtxoSelectionConfig = z.object({strategy: utxoSelectionStrategyEnum, source: utxoSelectionConfigSourceEnum});

export const utxoSelectionConfigResponse = z.object({configured: utxoSelectionConfigEntry.optional(), effective: effectiveUtxoSelectionConfig});

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 vault and asset UTXO selection config
 * 
 * GET /utxo_management/{vaultAccountId}/{assetId}/selection_config
 */
export const getApiUtxoManagementVaultAccountIdAssetIdSelectionConfig = async (options?: GetApiUtxoManagementVaultAccountIdAssetIdSelectionConfigOptions) => {
const {baseUrl = "https://api.fireblocks.io/v1", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/utxo_management/${encodeURIComponent(String(args.vaultAccountId))}/${encodeURIComponent(String(args.assetId))}/selection_config${query.size > 0 ? `?${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(utxoSelectionConfigResponse, await res.json())
};