import { PerpsErrorCode } from '@lifi/perps-types'
import { PerpsError } from '../errors/PerpsError.js'
import type { PerpsProvider, PerpsSDKClient } from '../types/provider.js'

/**
 * Resolve the registered bound {@link PerpsProvider} for `provider`, or throw.
 * Account reads run direct-to-venue through the provider, so a missing one is a
 * wiring error (the consumer must pass it to
 * `createPerpsClient({ providers: [...] })`) rather than a runtime-recoverable
 * state.
 *
 * @internal
 */
export function requireProvider(
  client: PerpsSDKClient,
  provider: string
): PerpsProvider {
  const plugin = client.getProvider(provider)
  if (plugin === undefined) {
    const error = new PerpsError(
      PerpsErrorCode.SDKError,
      `Provider plugin not registered: '${provider}'. Pass it to ` +
        'createPerpsClient({ providers: [...] }).'
    )
    error.tool = '@lifi/perps-sdk'
    throw error
  }
  return plugin
}