import assert from 'node:assert/strict'
import test from 'node:test'

import {
  clearPendingRefreshProjects,
  createProjectRefreshCoordinator,
  mergePendingRefreshProjects,
} from '../src/app/project-refresh-coordinator.ts'

test('project A and B refresh generations do not abort each other', () => {
  const coordinator = createProjectRefreshCoordinator()
  const projectA = coordinator.beginProject('project-a')
  const projectB = coordinator.beginProject('project-b')

  assert.equal(projectA.signal.aborted, false)
  assert.equal(projectA.isCurrent(), true)
  assert.equal(projectB.signal.aborted, false)
  assert.equal(projectB.isCurrent(), true)

  const newerProjectA = coordinator.beginProject('project-a')
  assert.equal(projectA.signal.aborted, true)
  assert.equal(projectB.signal.aborted, false)
  assert.equal(newerProjectA.isCurrent(), true)
})

test('project B success cannot clear project A pending recovery', () => {
  let pending = mergePendingRefreshProjects([], ['project-a'])

  pending = clearPendingRefreshProjects(pending, ['project-b'])

  assert.deepEqual(pending, ['project-a'])
})

test('recovery clears only successful targets and full success clears all', () => {
  let pending = mergePendingRefreshProjects([], ['project-a', 'project-b'])

  pending = clearPendingRefreshProjects(pending, ['project-a'])
  assert.deepEqual(pending, ['project-b'])

  pending = clearPendingRefreshProjects(pending)
  assert.deepEqual(pending, [])
})

test('full and targeted refreshes supersede only when their coverage overlaps globally', () => {
  const coordinator = createProjectRefreshCoordinator()
  const projectA = coordinator.beginProject('project-a')
  const projectB = coordinator.beginProject('project-b')
  const full = coordinator.beginFull()

  assert.equal(projectA.signal.aborted, true)
  assert.equal(projectB.signal.aborted, true)
  assert.equal(full.isCurrent(), true)

  const newerProjectA = coordinator.beginProject('project-a')
  assert.equal(full.signal.aborted, true)
  assert.equal(newerProjectA.isCurrent(), true)
})