import {type SanityClient} from '@sanity/client'
import {combineLatest, type Observable} from 'rxjs'
import {distinctUntilChanged, map, publishReplay, refCount, switchMap} from 'rxjs/operators'

import {type DocumentStoreExtraOptions} from '../getPairListener'
import {type IdPair} from '../types'
import {memoize} from '../utils/createMemoizer'
import {memoizedPair} from './memoizedPair'
import {memoizeKeyGen} from './memoizeKeyGen'

// A stream of all events related to either published or draft, each event comes with a 'target'
// that specifies which version (draft|published) the event is about
export const consistencyStatus: (
  client: SanityClient,
  idPair: IdPair,
  typeName: string,
  serverActionsEnabled: Observable<boolean>,
  extraOptions?: DocumentStoreExtraOptions,
) => Observable<boolean> = memoize(
  (
    client: SanityClient,
    idPair: IdPair,
    typeName: string,
    serverActionsEnabled: Observable<boolean>,
    extraOptions?: DocumentStoreExtraOptions,
  ) => {
    return memoizedPair(client, idPair, typeName, serverActionsEnabled, extraOptions).pipe(
      switchMap(({draft, published}) =>
        combineLatest([draft.consistency$, published.consistency$]),
      ),
      map(
        ([draftIsConsistent, publishedIsConsistent]) => draftIsConsistent && publishedIsConsistent,
      ),
      distinctUntilChanged(),
      publishReplay(1),
      refCount(),
    )
  },
  memoizeKeyGen,
)