import { describe, expect, it } from 'vitest'
import { decideSuggestion, extractTerminalPromptPrefix, isTerminalApp } from '../src/input-intelligence'

describe('terminal prompt extraction', () => {
  it('takes the Claude Code input line and ignores the status line below it', () => {
    const screen = [
      '● Wrote 3 files',
      '',
      '╭──────────────────────────────────────╮',
      '│ > 오늘 회의 내용을 정리해서            │',
      '╰──────────────────────────────────────╯',
      '  ◑ OPUS 5 · 5 medium │ CTX ▕░░▏',
    ].join('\n')
    expect(extractTerminalPromptPrefix(screen)).toBe('오늘 회의 내용을 정리해서')
  })

  it('joins wrapped continuation lines of a long prompt', () => {
    const screen = ['──────────', '> 긴 문장을 쓰다 보면', '  줄이 바뀌어서 이어진다', '──────────', '  ? for shortcuts'].join('\n')
    expect(extractTerminalPromptPrefix(screen)).toBe('긴 문장을 쓰다 보면 줄이 바뀌어서 이어진다')
  })

  it('reads shell prompts', () => {
    expect(extractTerminalPromptPrefix('PS C:\\Users\\me> git commit -m "고친')).toBe('git commit -m "고친')
    expect(extractTerminalPromptPrefix('C:\\work> dir')).toBe('dir')
    expect(extractTerminalPromptPrefix('me@host:~/app$ npm run')).toBe('npm run')
    expect(extractTerminalPromptPrefix('❯ cargo build')).toBe('cargo build')
  })

  it('returns null when only output is on screen, and does not mistake percentages for prompts', () => {
    expect(extractTerminalPromptPrefix('Compiling...\n100% 완료\nDone in 3s')).toBeNull()
    expect(extractTerminalPromptPrefix('')).toBeNull()
  })

  it('an empty prompt yields an empty prefix', () => {
    expect(extractTerminalPromptPrefix('output\n> ')).toBe('')
  })

  it('recognises terminal apps', () => {
    expect(isTerminalApp('WindowsTerminal.exe')).toBe(true)
    expect(isTerminalApp('KakaoTalk.exe')).toBe(false)
    expect(isTerminalApp(null)).toBe(false)
  })
})

describe('a visible suggestion survives a typing pause', () => {
  const base = {
    enabled: true,
    modelAvailable: true,
    composing: false,
    hasSelection: false,
    isPassword: false,
    isEditable: true,
    appName: 'KakaoTalk.exe',
    excludedApps: [],
    editedSinceFocus: false,
    typedRecently: false,
    prefix: '내일 몇 시에 볼까',
    idleMs: 5000,
    triggerDelayMs: 100,
    minPrefixChars: 4,
    sinceLastRequestMs: 60_000,
    minIntervalMs: 5000,
    requestsThisMinute: 0,
    maxRequestsPerMinute: 6,
    requestsToday: 0,
    dailyBudget: 500,
  }

  it('keeps the overlay while the user reads and picks a candidate', () => {
    expect(decideSuggestion({ ...base, overlayVisible: true })).toEqual({ action: 'skip', reason: 'already-visible' })
  })

  it('still refuses to start a new suggestion without typing', () => {
    expect(decideSuggestion({ ...base, overlayVisible: false })).toEqual({ action: 'clear', reason: 'not-typing' })
  })
})