import { expect, test } from "vitest"

import { computed, effect, effectScope, reactiveSystem, signal } from "#Source/reactor/index.ts"

/**
 * @description 这个测试文件应该与 https://github.com/stackblitz/alien-signals/blob/master/tests/untrack.spec.ts 保持同步。
 */

test("should pause tracking in computed", () => {
  const src = signal(() => 0)

  let computedRunTimes = 0
  const c = computed(() => {
    computedRunTimes = computedRunTimes + 1
    reactiveSystem.setNoActiveNodeAsSub()
    const value = src.get()
    reactiveSystem.resetActiveNodeAsSub()
    return value
  })

  expect(c.get()).toBe(0)
  expect(computedRunTimes).toBe(1)

  src.set(1)
  src.set(2)
  src.set(3)
  expect(c.get()).toBe(0)
  expect(computedRunTimes).toBe(1)
})

test("should pause tracking in effect", () => {
  const src = signal(() => 0)
  const is = signal(() => 0)

  let effectRunTimes = 0
  effect(() => {
    effectRunTimes = effectRunTimes + 1
    if (is.get() !== 0) {
      reactiveSystem.setNoActiveNodeAsSub()
      src.get()
      reactiveSystem.resetActiveNodeAsSub()
    }
  })

  expect(effectRunTimes).toBe(1)

  is.set(1)
  expect(effectRunTimes).toBe(2)

  src.set(1)
  src.set(2)
  src.set(3)
  expect(effectRunTimes).toBe(2)

  is.set(2)
  expect(effectRunTimes).toBe(3)

  src.set(4)
  src.set(5)
  src.set(6)
  expect(effectRunTimes).toBe(3)

  is.set(0)
  expect(effectRunTimes).toBe(4)

  src.set(7)
  src.set(8)
  src.set(9)
  expect(effectRunTimes).toBe(4)
})

test("should pause tracking in effect scope", () => {
  const src = signal(() => 0)

  let effectRunTimes = 0
  effectScope(() => {
    effect(() => {
      effectRunTimes = effectRunTimes + 1
      reactiveSystem.setNoActiveNodeAsSub()
      src.get()
      reactiveSystem.resetActiveNodeAsSub()
    })
  })

  expect(effectRunTimes).toBe(1)

  src.set(1)
  src.set(2)
  src.set(3)
  expect(effectRunTimes).toBe(1)
})