// tests/unit/history-clear-all-redteam-r1-28.test.ts
// 회귀: 히스토리 '모두 지우기'가 확인 없이 한 번 클릭으로 전체 기록을 지우고 클라우드로 전파하던 결함.
// HistoryPage는 이제 ClearAllHistoryFlow를 거쳐서만 deleteAll을 호출한다.

import { describe, it, expect, vi } from 'vitest'
import fs from 'fs'
import path from 'path'
import {
  ClearAllHistoryFlow,
  isClearAllDialogOpen,
  isHistoryViewFiltered,
  type ClearAllHistoryPort,
  type ClearAllHistoryState,
} from '../../src/renderer/pages/history/clear-all-history-flow'

function deferred<T>(): { promise: Promise<T>; resolve: (v: T) => void } {
  let resolve!: (v: T) => void
  const promise = new Promise<T>((r) => {
    resolve = r
  })
  return { promise, resolve }
}

function makePort(count: number | null = 12): ClearAllHistoryPort & {
  countAll: ReturnType<typeof vi.fn>
  deleteAll: ReturnType<typeof vi.fn>
} {
  return {
    countAll: vi.fn(async () => count),
    deleteAll: vi.fn(async () => true),
  }
}

describe('ClearAllHistoryFlow — 확인 없이는 전체 삭제하지 않는다', () => {
  it('request()만으로는 deleteAll을 호출하지 않고 전체 건수와 함께 확인 단계로 간다', async () => {
    const port = makePort(12)
    const flow = new ClearAllHistoryFlow(port)

    await flow.request()

    expect(port.deleteAll).not.toHaveBeenCalled()
    expect(flow.getState()).toEqual({ phase: 'confirming', count: 12 })
    expect(isClearAllDialogOpen(flow.getState())).toBe(true)
  })

  it('confirm() 후에만 deleteAll이 정확히 한 번 실행되고 idle로 돌아온다', async () => {
    const port = makePort(3)
    const states: ClearAllHistoryState[] = []
    const flow = new ClearAllHistoryFlow(port, (s) => states.push(s))

    await flow.request()
    const ok = await flow.confirm()

    expect(ok).toBe(true)
    expect(port.deleteAll).toHaveBeenCalledTimes(1)
    expect(flow.getState()).toEqual({ phase: 'idle' })
    expect(states.map((s) => s.phase)).toEqual(['counting', 'confirming', 'deleting', 'idle'])
  })

  it('cancel()하면 아무것도 지우지 않는다', async () => {
    const port = makePort(5)
    const flow = new ClearAllHistoryFlow(port)

    await flow.request()
    flow.cancel()

    expect(await flow.confirm()).toBe(false)
    expect(port.deleteAll).not.toHaveBeenCalled()
    expect(flow.getState()).toEqual({ phase: 'idle' })
  })

  it('확인 단계 없이 confirm()을 불러도 삭제하지 않는다', async () => {
    const port = makePort(5)
    const flow = new ClearAllHistoryFlow(port)

    expect(await flow.confirm()).toBe(false)
    expect(port.deleteAll).not.toHaveBeenCalled()
  })

  it('confirm을 연타해도 deleteAll은 한 번만 실행된다', async () => {
    const port = makePort(5)
    const gate = deferred<boolean>()
    port.deleteAll.mockImplementation(() => gate.promise)
    const flow = new ClearAllHistoryFlow(port)

    await flow.request()
    const first = flow.confirm()
    const second = flow.confirm()
    gate.resolve(true)

    expect(await first).toBe(true)
    expect(await second).toBe(false)
    expect(port.deleteAll).toHaveBeenCalledTimes(1)
  })

  it('지울 기록이 없거나 개수 조회에 실패하면 확인 단계로 가지 않는다', async () => {
    for (const count of [0, null]) {
      const port = makePort(count)
      const flow = new ClearAllHistoryFlow(port)
      await flow.request()
      expect(flow.getState()).toEqual({ phase: 'idle' })
      expect(port.deleteAll).not.toHaveBeenCalled()
    }

    const throwing = makePort(1)
    throwing.countAll.mockRejectedValue(new Error('ipc down'))
    const flow = new ClearAllHistoryFlow(throwing)
    await flow.request()
    expect(flow.getState()).toEqual({ phase: 'idle' })
  })

  it('개수 조회 중 취소되면 늦게 온 결과로 다이얼로그를 다시 열지 않는다', async () => {
    const port = makePort()
    const gate = deferred<number | null>()
    port.countAll.mockImplementation(() => gate.promise)
    const flow = new ClearAllHistoryFlow(port)

    const pending = flow.request()
    flow.cancel()
    gate.resolve(9)
    await pending

    expect(flow.getState()).toEqual({ phase: 'idle' })
  })

  it('deleteAll이 실패하거나 throw해도 idle로 복귀하고 false를 돌려준다', async () => {
    const port = makePort(2)
    port.deleteAll.mockRejectedValue(new Error('db locked'))
    const flow = new ClearAllHistoryFlow(port)

    await flow.request()
    expect(await flow.confirm()).toBe(false)
    expect(flow.getState()).toEqual({ phase: 'idle' })
  })
})

describe('isHistoryViewFiltered', () => {
  it('태그 필터나 공백이 아닌 검색어가 있으면 필터된 화면이다', () => {
    expect(isHistoryViewFiltered(null, '')).toBe(false)
    expect(isHistoryViewFiltered(null, '   ')).toBe(false)
    expect(isHistoryViewFiltered('work', '')).toBe(true)
    expect(isHistoryViewFiltered(null, 'meeting')).toBe(true)
  })
})

describe('HistoryPage 배선', () => {
  const pageSource = fs.readFileSync(
    path.resolve(__dirname, '../../src/renderer/pages/HistoryPage.tsx'),
    'utf-8',
  )

  it('페이지가 history.deleteAll을 직접 호출하지 않는다 (확인 흐름을 우회하지 않음)', () => {
    expect(pageSource).not.toMatch(/electronAPI\.history\.deleteAll\s*\(/)
  })

  it('휴지통 버튼은 삭제가 아니라 확인 요청만 한다', () => {
    const button = pageSource.slice(pageSource.indexOf('data-testid="clear-all-history-button"'))
    expect(button).toMatch(/^[^>]*onClick=\{clearAll\.request\}/)
  })
})