import type { Store } from 'viem/tempo'

import type * as core_Store from '../../internal/Store.js'

/** Adapts Tempo API state to Viem's atomic multisig store. */
export function fromStore(store: core_Store.State): Store.Atomic {
  const swap = store.swap?.bind(store)
  if (!swap) throw new Error('Multisig coordination requires an atomic state store.')

  return {
    compareAndSet(key, expected, value, options) {
      const ttl =
        options?.expiresAt === undefined ? undefined : Math.max(0, options.expiresAt - Date.now())
      return swap(key, expected, value, ttl === undefined ? undefined : { ttl })
    },
    getItem: (key) => store.get(key),
    removeItem: (key) => store.delete(key),
    setItem: (key, value) => store.put(key, value),
  }
}