import fs from 'node:fs'
import os from 'node:os'
import path from 'node:path'
import pino from 'pino'
import { unzipSync } from 'fflate'
import { beforeAll, describe, expect, it } from 'vitest'
import { createApp, type App } from '../src/app'
import { config } from '../src/config'

let app: App
let sid: string
let ws: string
let kbDir: string

beforeAll(async () => {
  app = createApp(pino({ level: 'silent' }), { providers: {} })
  const builtin = app.profiles.getBuiltin().id
  const key = app.apiKeys.create('fm', { allowedProfileIds: [builtin], defaultProfileId: builtin })
  const s = await app.sessions.create(key.apiKey.id, {})
  sid = s.id
  ws = s.workspaceDir
  fs.writeFileSync(path.join(ws, 'uploads', 'data.csv'), 'a,b\n1,2\n')
  kbDir = fs.mkdtempSync(path.join(os.tmpdir(), 'kb-'))
  fs.writeFileSync(path.join(kbDir, 'note.md'), '# 账单\n')
  fs.symlinkSync('/etc', path.join(kbDir, 'etc-link'))
  fs.mkdirSync(path.join(kbDir, '.ssh-like'))
  app.knowledge.create({ name: '账单', path: kbDir, description: '家庭账单', access: 'read', enabled: true })
})

const kbRoot = () => app.fileManager.roots().find(r => r.kind === 'knowledge')!.id

describe('后台文件管理', () => {
  it('位置：会话工作区与资料库可写，本地技能、已安装技能与运行环境只读；常用目录包含最近的会话与资料库', () => {
    const roots = app.fileManager.roots()
    expect(roots.map(r => [r.id.split(':')[0], r.writable])).toEqual([['workspaces', true], ['kb', true], ['skills', false], ['managed-skills', false], ['runtime', false]])
    const sc = app.fileManager.shortcuts()
    expect(sc[0]).toMatchObject({ rootId: 'workspaces', path: '' })
    expect(sc.some(s => s.rootId === 'workspaces' && s.path === sid)).toBe(true)
    expect(sc.some(s => s.label === '账单')).toBe(true)
  })

  it('浏览、编辑（带冲突检查）、上传、新建目录、移动、删除；会话的文件记录随之更新', async () => {
    expect(app.fileManager.list('workspaces', sid).entries.map(e => [e.name, e.type])).toEqual(expect.arrayContaining([['uploads', 'dir'], ['outputs', 'dir']]))
    const t = app.fileManager.readText('workspaces', `${sid}/uploads/data.csv`)
    expect(t.content).toBe('a,b\n1,2\n')
    const saved = app.fileManager.writeText('workspaces', `${sid}/uploads/data.csv`, 'a,b\n3,4\n', t.mtime)
    expect(fs.readFileSync(path.join(ws, 'uploads/data.csv'), 'utf8')).toBe('a,b\n3,4\n')
    // 打开后文件被修改：拒绝保存
    fs.writeFileSync(path.join(ws, 'uploads/data.csv'), 'changed')
    fs.utimesSync(path.join(ws, 'uploads/data.csv'), new Date(), new Date(Date.now() + 5000))
    expect(() => app.fileManager.writeText('workspaces', `${sid}/uploads/data.csv`, 'x', saved.mtime)).toThrow(/修改过/)

    app.fileManager.mkdir('workspaces', `${sid}/outputs/drafts`)
    app.fileManager.upload('workspaces', `${sid}/outputs/drafts`, 'report.md', Buffer.from('# 报告'))
    await new Promise(r => setTimeout(r, 50))
    expect(app.files.list(sid).map(f => f.path)).toContain('outputs/drafts/report.md')
    app.fileManager.move('workspaces', `${sid}/outputs/drafts/report.md`, `${sid}/outputs/final.md`)
    app.fileManager.delete('workspaces', `${sid}/outputs/drafts`)
    await new Promise(r => setTimeout(r, 50))
    const paths = app.files.list(sid).map(f => f.path)
    expect(paths).toContain('outputs/final.md')
    expect(paths).not.toContain('outputs/drafts/report.md')
  })

  it('保护：只读位置不能写；路径不能越出位置；外部符号链接不跟随；会话目录不能在这里删除', () => {
    expect(() => app.fileManager.writeText('skills', 'x.md', 'x', null)).toThrow(/只读/)
    expect(() => app.fileManager.list('workspaces', '../')).toThrow(/路径不正确/)
    expect(() => app.fileManager.list('workspaces', `${sid}/../..`)).toThrow(/路径不正确/)
    const kb = kbRoot()
    expect(app.fileManager.list(kb, '').entries.find(e => e.name === 'etc-link')!.type).toBe('link')
    expect(() => app.fileManager.readText(kb, 'etc-link/hostname')).toThrow(/位置之外/)
    expect(() => app.fileManager.delete('workspaces', sid)).toThrow(/会话页面/)
    expect(() => app.fileManager.delete('workspaces', '')).toThrow(/根目录/)
  })

  it('服务数据目录与全局禁止项不可见', () => {
    // 包含服务数据目录的路径不能登记为资料库，文件管理也就无从进入
    expect(() => app.knowledge.create({ name: '数据目录上层', path: config.dataDir, description: '', access: 'read', enabled: true })).toThrow(/全局禁止项/)
    app.settings.update({ security: { globalDeny: [path.join(kbDir, '.ssh-like')] } })
    expect(app.fileManager.list(kbRoot(), '').entries.map(e => e.name)).not.toContain('.ssh-like')
    app.settings.update({ security: { globalDeny: [] } })
  })

  it('二进制文件不能在线编辑；目录可以打包下载', () => {
    fs.writeFileSync(path.join(ws, 'outputs', 'img.bin'), Buffer.from([0, 1, 2, 0, 5]))
    expect(() => app.fileManager.readText('workspaces', `${sid}/outputs/img.bin`)).toThrow(/二进制/)
    const z = app.fileManager.zipDir('workspaces', `${sid}/outputs`)
    expect(z.name).toBe('outputs.zip')
    expect(Object.keys(unzipSync(new Uint8Array(z.data))).sort()).toEqual(['final.md', 'img.bin'])
  })
})