Swift Combine publisher being called infinitely - swiftui

Question

Having issues figuring out why my function crashes/run indefinitely on the second run.
Function runs as expected on the first run. When i switch screens and do (onAppear) the function runs indefinitely without stopping.
Really confuse on why the logic runs perfectly as expected on first run but then indefinitely on the second run.
import Foundation
import Combine
class test: ObservableObject {
static let singleton = test()
private var disposables = Set<AnyCancellable>()
#Published var isNext = false
var logs: [Int] = []
func getfullFunctionHistory() -> AnyPublisher<[Int], Error> {
Future<[Int], Error> { promise in
self.$isNext.sink { completion in
print("completion")
} receiveValue: { bool in
if self.logs.isEmpty {
self.logs = [1,2,3]
}
if self.logs.count == 1 {
print("done")
self.logs = []
}else{
self.logs = self.logs.dropLast(1)
self.isNext = true
}
}.store(in: &self.disposables)
}.eraseToAnyPublisher()
}
}
view below
import SwiftUI
struct ContentView: View {
var body: some View {
VStack {
Button {
test.singleton.getfullFunctionHistory()
} label: {
Text("Click me")
}
}
.padding()
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
I'm expecting "done" to be printed only once. It prints once on the first click. Then on the second click it prints indefinitely. Second click should also print once and so on...