// tests/main/windows/popup-navigation.test.ts
// 히스토리 팝업을 연 채 명령어 팝업을 열면 Enter 가 히스토리 항목을 삽입하던 버그의 회귀 테스트.

import { describe, it, expect, vi } from 'vitest'
import {
  PopupNavigationController,
  POPUP_NAV_KEYS,
  HISTORY_INSERT_DELAY_MS,
  type PopupKind,
  type PopupWindowPort,
} from '../../../src/main/windows/popup-navigation'

interface FakeWindow extends PopupWindowPort {
  visible: boolean
  keys: string[]
}

function fakeWindow(): FakeWindow {
  const win: FakeWindow = {
    visible: false,
    keys: [],
    show: () => {
      win.visible = true
    },
    hide: () => {
      win.visible = false
    },
    isVisible: () => win.visible,
    sendKey: (key) => {
      win.keys.push(key)
    },
  }
  return win
}

/** Electron globalShortcut 처럼 이미 등록된 가속기의 재등록은 false 로 거부한다 */
function fakeShortcuts(): {
  registered: Map<string, () => void>
  register: (accel: string, cb: () => void) => boolean
  unregister: (accel: string) => void
  press: (accel: string) => void
} {
  const registered = new Map<string, () => void>()
  return {
    registered,
    register: (accel, cb) => {
      if (registered.has(accel)) return false
      registered.set(accel, cb)
      return true
    },
    unregister: (accel) => {
      registered.delete(accel)
    },
    press: (accel) => registered.get(accel)?.(),
  }
}

function setup(): {
  controller: PopupNavigationController
  windows: Record<PopupKind, FakeWindow>
  shortcuts: ReturnType<typeof fakeShortcuts>
  inserted: string[]
  scheduled: Array<{ fn: () => void; ms: number }>
  selections: Array<{ id: string; name: string }>
} {
  const windows = { history: fakeWindow(), command: fakeWindow() }
  const shortcuts = fakeShortcuts()
  const inserted: string[] = []
  const scheduled: Array<{ fn: () => void; ms: number }> = []
  const selections: Array<{ id: string; name: string }> = []
  const controller = new PopupNavigationController({
    windows,
    shortcuts,
    insertText: async (text) => {
      inserted.push(text)
    },
    applyCommandSelection: (sel) => selections.push(sel),
    schedule: (fn, ms) => scheduled.push({ fn, ms }),
  })
  return { controller, windows, shortcuts, inserted, scheduled, selections }
}

describe('PopupNavigationController', () => {
  it('히스토리 → 명령어 전환 시 히스토리를 닫고 Enter 는 명령어 팝업으로 간다', () => {
    const { controller, windows, shortcuts } = setup()
    controller.toggle('history')
    controller.toggle('command')

    expect(windows.history.visible).toBe(false)
    expect(windows.command.visible).toBe(true)
    expect(controller.owner).toBe('command')

    shortcuts.press('Return')
    expect(windows.command.keys).toEqual(['Enter'])
    expect(windows.history.keys).toEqual([])
  })

  it('소유자가 아닌 팝업을 닫아도 소유자의 키를 뺏지 않는다', () => {
    const { controller, windows, shortcuts } = setup()
    controller.show('command')
    controller.dismiss('history')

    expect(shortcuts.registered.size).toBe(POPUP_NAV_KEYS.length)
    shortcuts.press('Down')
    expect(windows.command.keys).toEqual(['ArrowDown'])
  })

  it('소유 팝업을 닫으면 전역 내비게이션 키를 모두 해제한다', () => {
    const { controller, shortcuts } = setup()
    controller.toggle('history')
    expect(shortcuts.registered.size).toBe(POPUP_NAV_KEYS.length)
    controller.toggle('history')
    expect(shortcuts.registered.size).toBe(0)
    expect(controller.owner).toBeNull()
  })

  it('히스토리 선택은 팝업을 닫고 지연 뒤 삽입한다', async () => {
    const { controller, windows, inserted, scheduled, shortcuts } = setup()
    controller.show('history')
    controller.selectHistoryItem('붙여넣을 텍스트')

    expect(windows.history.visible).toBe(false)
    expect(shortcuts.registered.size).toBe(0)
    expect(scheduled).toHaveLength(1)
    expect(scheduled[0].ms).toBe(HISTORY_INSERT_DELAY_MS)
    expect(inserted).toEqual([])
    scheduled[0].fn()
    await Promise.resolve()
    expect(inserted).toEqual(['붙여넣을 텍스트'])
  })

  it('명령어 선택은 팝업을 닫고 선택을 반영한다', () => {
    const { controller, windows, selections } = setup()
    controller.show('command')
    controller.selectCommand({ id: 'cmd-1', name: '번역' })
    expect(windows.command.visible).toBe(false)
    expect(selections).toEqual([{ id: 'cmd-1', name: '번역' }])
  })

  it('팝업이 다른 경로로 사라졌으면 다음 키에서 전역 키를 놓는다', () => {
    const { controller, windows, shortcuts } = setup()
    controller.show('history')
    windows.history.visible = false
    shortcuts.press('Return')
    expect(shortcuts.registered.size).toBe(0)
    expect(windows.history.keys).toEqual([])
  })

  it('등록 실패(다른 앱이 점유)를 경고한다', () => {
    const warn = vi.fn()
    const windows = { history: fakeWindow(), command: fakeWindow() }
    const controller = new PopupNavigationController({
      windows,
      shortcuts: { register: () => false, unregister: () => undefined },
      insertText: async () => undefined,
      applyCommandSelection: () => undefined,
      warn,
    })
    controller.show('history')
    expect(warn).toHaveBeenCalled()
  })
})