import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest'
import {
  shouldShowStep,
  clearChainProgress,
  tutorialEnabled,
  tutorialProgress,
  sessionSkipped,
  maybeShow,
  dismissActive,
  activeStep,
} from '../controller'

function setKebabAnchorHtml() {
  document.body.innerHTML = `
    <div class="kebab-menu"></div>
    <button data-tutorial="chore-edit-points kebab-edit-points-cost">Edit Points</button>
    <button data-tutorial="chore-schedule">Schedule</button>
  `
}

describe('tutorial controller - shouldShowStep', () => {
  beforeEach(() => {
    tutorialEnabled.value = true
    tutorialProgress.value = {}
    sessionSkipped.value = false
    activeStep.value = null
    document.body.innerHTML = ''
    global.fetch = vi.fn().mockResolvedValue({ ok: true })
  })

  afterEach(() => {
    activeStep.value = null
    document.body.innerHTML = ''
    vi.restoreAllMocks()
  })

  it('returns true when tips are enabled, the step is unseen, and the session is not skipped', () => {
    expect(shouldShowStep('create-chore')).toBe(true)
  })

  it('returns false when tips are disabled for a normal step', () => {
    tutorialEnabled.value = false
    expect(shouldShowStep('create-penalty')).toBe(false)
  })

  it('returns true for a locally-cleared step even when tips are disabled', () => {
    tutorialEnabled.value = false
    clearChainProgress('create-reward')
    expect(shouldShowStep('create-reward')).toBe(true)
  })

  it('still blocks locally-cleared steps when the session has been skipped', () => {
    tutorialEnabled.value = false
    sessionSkipped.value = true
    clearChainProgress('create-kindness')
    expect(shouldShowStep('create-kindness')).toBe(false)
  })

  it('returns false when the step has already been seen', () => {
    tutorialProgress.value = { 'notification-click': true }
    expect(shouldShowStep('notification-click')).toBe(false)
  })

  it('ignores the enabled flag when ignoreEnabled is true', () => {
    tutorialEnabled.value = false
    expect(shouldShowStep('status-pending', true)).toBe(true)
  })
})

describe('tutorial controller - maybeShow', () => {
  beforeEach(() => {
    tutorialEnabled.value = true
    tutorialProgress.value = {}
    sessionSkipped.value = false
    activeStep.value = null
    setKebabAnchorHtml()
    global.fetch = vi.fn().mockResolvedValue({ ok: true })
  })

  afterEach(() => {
    activeStep.value = null
    document.body.innerHTML = ''
    vi.restoreAllMocks()
  })

  it('promotes a step when the anchor is present', () => {
    maybeShow('chore-kebab-menu')
    expect(activeStep.value?.def.id).toBe('chore-kebab-menu')
  })

  it('does not promote a step that has already been seen', () => {
    tutorialProgress.value = { 'chore-kebab-menu': true }
    maybeShow('chore-kebab-menu')
    expect(activeStep.value).toBeNull()
  })

  it('is idempotent for the currently active step', () => {
    maybeShow('chore-kebab-menu')
    expect(activeStep.value?.def.id).toBe('chore-kebab-menu')

    maybeShow('chore-kebab-menu')
    expect(activeStep.value?.def.id).toBe('chore-kebab-menu')
  })

  it('drops a step whose anchor is missing', () => {
    document.body.innerHTML = ''
    maybeShow('chore-kebab-menu')
    expect(activeStep.value).toBeNull()
  })
})

describe('tutorial controller - dismissActive', () => {
  beforeEach(() => {
    tutorialEnabled.value = true
    tutorialProgress.value = {}
    sessionSkipped.value = false
    activeStep.value = null
    setKebabAnchorHtml()
    global.fetch = vi.fn().mockResolvedValue({ ok: true })
  })

  afterEach(() => {
    activeStep.value = null
    document.body.innerHTML = ''
    vi.restoreAllMocks()
  })

  it('marks the active step seen and chains the next step', () => {
    maybeShow('chore-kebab-menu')
    expect(activeStep.value?.def.id).toBe('chore-kebab-menu')

    dismissActive(true)
    expect(tutorialProgress.value['chore-kebab-menu']).toBe(true)
    expect(activeStep.value?.def.id).toBe('chore-edit-points')
  })

  it('does not duplicate a chained step that is already queued', () => {
    // Set up: open the chore kebab menu, then queue the next step early.
    maybeShow('chore-kebab-menu')
    maybeShow('chore-edit-points')
    expect(activeStep.value?.def.id).toBe('chore-kebab-menu')

    // Dismissing the menu should chain to chore-edit-points only once.
    dismissActive(true)
    expect(activeStep.value?.def.id).toBe('chore-edit-points')

    // If a duplicate had been added, we would still be on chore-edit-points.
    dismissActive(true)
    expect(activeStep.value?.def.id).toBe('chore-schedule')
  })

  it('does not re-chain a step that is currently active', () => {
    maybeShow('chore-kebab-menu')
    dismissActive(true)
    expect(activeStep.value?.def.id).toBe('chore-edit-points')

    // Dismissing chore-edit-points should move to chore-schedule, not loop.
    dismissActive(true)
    expect(activeStep.value?.def.id).toBe('chore-schedule')
  })

  it('does not mark the step seen when markSeen is false', () => {
    maybeShow('chore-kebab-menu')
    dismissActive(false)
    expect(tutorialProgress.value['chore-kebab-menu']).toBeUndefined()
    expect(activeStep.value).toBeNull()
  })
})