/**
 * 04-finder: Finder 历史导航、文件操作、废纸篓
 * 原测试: Playwright browser → 改为 FS composable 层测试
 */
import { describe, it, expect, beforeEach } from 'vitest'
import { fs } from '../../src/composables/useFS'

describe('04-finder — 访达核心', () => {
  beforeEach(() => { localStorage.clear(); (fs as any).root = null; fs.init() })

  // ===== 路径导航 =====
  it('list Desktop 返回 ≥2 项目（welcome.txt + Sample Folder）', () => {
    const items = fs.list(fs.HOME + '/Desktop')
    expect(items.length).toBeGreaterThanOrEqual(2)
  })
  it('baseName 提取文件名', () => { expect(fs.baseName('/a/b/c.txt')).toBe('c.txt') })
  it('dirName 提取目录', () => { expect(fs.dirName('/a/b/c.txt')).toBe('/a/b') })
  it('join 拼接路径', () => { expect(fs.join('/a', 'b/', '/c')).toBe('/a/b/c') })
  it('normalize 规范化', () => { expect(fs.normalize('/a/./b/../c')).toBe('/a/c') })

  // ===== 选择与类型 =====
  it('iconFor 文件夹返回 folder 图标', () => { expect(fs.iconFor(fs.HOME + '/Desktop')).toContain('folder') })
  it('iconFor 文本文件返回 txt 图标', () => { expect(fs.iconFor(fs.HOME + '/Desktop/welcome.txt')).toContain('txt') })
  it('kindOf 文件夹返回"文件夹"', () => { expect(fs.kindOf(fs.HOME + '/Desktop')).toBe('文件夹') })
  it('kindOf 文本返回"纯文本"', () => { expect(fs.kindOf(fs.HOME + '/Desktop/welcome.txt')).toBe('纯文本') })

  // ===== 重命名 =====
  it('rename 后旧名消失新名存在', () => {
    fs.write(fs.HOME + '/rn-old.txt', 'x')
    fs.rename(fs.HOME + '/rn-old.txt', 'rn-new.txt')
    expect(fs.exists(fs.HOME + '/rn-old.txt')).toBe(false)
    expect(fs.exists(fs.HOME + '/rn-new.txt')).toBe(true)
    fs.remove(fs.HOME + '/rn-new.txt')
  })

  // ===== 复制/移动 =====
  it('copy 复制文件到目标目录', () => {
    const np = fs.copy(fs.HOME + '/Desktop/welcome.txt', fs.HOME + '/Documents')
    expect(np).toContain('Documents')
    expect(fs.exists(np)).toBe(true)
    fs.remove(np)
  })
  it('move 移动文件并删除源', () => {
    fs.write(fs.HOME + '/mv-src.txt', 'x')
    fs.move(fs.HOME + '/mv-src.txt', fs.HOME + '/Documents')
    expect(fs.exists(fs.HOME + '/mv-src.txt')).toBe(false)
    expect(fs.exists(fs.HOME + '/Documents/mv-src.txt')).toBe(true)
    fs.remove(fs.HOME + '/Documents/mv-src.txt')
  })
  it('move 到自身抛错', () => {
    expect(() => fs.move(fs.HOME + '/Desktop', fs.HOME + '/Desktop')).toThrow()
  })

  // ===== 废纸篓 =====
  it('trash + restore 完整流程', () => {
    fs.write(fs.HOME + '/Documents/trash-me.txt', 'restore me')
    const orig = fs.HOME + '/Documents/trash-me.txt'
    fs.trash(orig)
    expect(fs.exists(orig)).toBe(false) // 已移走
    fs.restore('trash-me.txt')
    expect(fs.exists(orig)).toBe(true) // 已还原
    fs.remove(orig)
  })
  it('emptyTrash 清空废纸篓', () => {
    fs.write(fs.HOME + '/empty-me.txt', '')
    fs.trash(fs.HOME + '/empty-me.txt')
    expect(fs.list(fs.TRASH).length).toBeGreaterThan(0)
    fs.emptyTrash()
    expect(fs.list(fs.TRASH).length).toBe(0)
  })

  // ===== 搜索 =====
  it('search 按名称找到文件', () => {
    const r = fs.search('welcome')
    expect(r.length).toBeGreaterThanOrEqual(1)
    expect(r.some((x: any) => x.path.includes('welcome'))).toBe(true)
  })
  it('search 限制最多 40 条', () => {
    for (let i = 0; i < 50; i++) fs.write(fs.HOME + '/st-' + i + '.txt', '')
    const r = fs.search('st-', fs.HOME)
    expect(r.length).toBeLessThanOrEqual(40)
    for (let i = 0; i < 50; i++) fs.remove(fs.HOME + '/st-' + i + '.txt')
  })

  // ===== uniqueName =====
  it('uniqueName 冲突时自动编号', () => {
    const name = fs.uniqueName(fs.HOME + '/Desktop', 'welcome.txt')
    expect(name).not.toBe('welcome.txt')
    expect(name).toContain('welcome')
  })

  // ===== 边界情况 =====
  it('write 到同名目录抛错', () => {
    fs.mkdir(fs.HOME + '/crash-test')
    expect(() => fs.write(fs.HOME + '/crash-test', '')).toThrow('同名文件夹')
    fs.remove(fs.HOME + '/crash-test')
  })
  it('read 不存在文件抛错', () => { expect(() => fs.read('/no')).toThrow() })
  it('read 目录抛错', () => { expect(() => fs.read(fs.HOME)).toThrow('不是文本文件') })
  it('mkdir 已存在目录且 recursive 不抛错', () => {
    fs.mkdir(fs.HOME + '/exist-test', { recursive: true, silent: true })
    expect(fs.isDir(fs.HOME + '/exist-test')).toBe(true)
    // recursive 已存在不应抛错
    expect(() => fs.mkdir(fs.HOME + '/exist-test', { recursive: true })).not.toThrow()
    fs.remove(fs.HOME + '/exist-test')
  })
})