retreive post fav reactions with rxswift

viewModel.swift

let userInfo = reloadTrigger
	.flatMapLatest { [apiService, selectedUser] in
		apiService.fetchUserInfo(with: selectedUser.id)
			.trackActivity(activityIndicator)
	}
	.share(replay: 1)
let favorites = userInfo
	.flatMapLatest { [apiService] in
		apiService.fetchFavorites(with: $0.id)
			.trackActivity(activityIndicator)
	}
	.share(replay: 1)
let posts = userInfo
	.flatMapLatest { [apiService] in
		apiService.fetchPosts(with: $0.id)
			.trackActivity(activityIndicator)
	}
	.share(replay: 1)
let reactions = posts.map { $0.filter { $0.reactionCount > 0 } }
	.reduce([]) { $0 + $1 }
	.map { $0.map { $0.id } }
	.flatMapLatest { [apiService] in
		apiService.fetchReactions(with: $0)
			.trackActivity(activityIndicator)
	}
	.share(replay: 1)
let userInfoSave = userInfo.do(onNext: { [realmController] info in
	try info.addUserInfo(to: realmController)
})
let favoritesSave = favorites.do(onNext: { [realmController] favorites in
	try favorites.addFavorites(to: realmController)
})
let postsSave = posts.do(onNext: { [realmController] posts in
	try posts.addUserPosts(to: realmController)
})
let reactionsSave = reactions.do(onNext: { [realmController] reactions, postId in
	try reactions.addReactions(with: postId, realmController: realmController)
})
Observable.combineLatest(userInfoSave, favoritesSave, postsSave, reactionsSave)
	.subscribe()
	.disposed(by: bag)
reloadTrigger.accept(())