// 资料库类型与资料集合（docs/design/21-knowledge-sources.md）
import fs from 'node:fs'
import http from 'node:http'
import type { AddressInfo } from 'node:net'
import path from 'node:path'
import pino from 'pino'
import { afterAll, beforeAll, describe, expect, it } from 'vitest'
import type { KnowledgeBrowseDto, KnowledgeLocalCheckDto, ProfileInput } from '@agent-server/shared'
import { createApp, type App } from '../src/app'
import { knowledgeFilesDir, knowledgeMountDir } from '../src/config'
import { describeKnowledge, linkOrigins } from '../src/knowledge/describe'
import { MounterRejected, MounterUnavailable, type MounterApi, type MountSpec, type MountStatusRow, type RemoteSpec } from '../src/knowledge/mounter'

/** 模拟挂载服务：/home/u 下在系统盘，/media/u/Data 下在外接盘（UUID aaaa） */
class FakeMounter implements MounterApi {
  up = true
  synced: MountSpec[][] = []
  checks: string[] = []
  tests: RemoteSpec[] = []
  states = new Map<string, Omit<MountStatusRow, 'id'>>()
  private guard() {
    if (!this.up) throw new MounterUnavailable('挂载服务没有运行')
  }
  async list(p: string): Promise<KnowledgeBrowseDto> {
    this.guard()
    return { path: p, parent: '', entries: [{ name: 'docs', path: `${p}/docs`, selectable: true }] }
  }
  async check(p: string): Promise<KnowledgeLocalCheckDto> {
    this.guard()
    this.checks.push(p)
    if (p.startsWith('/media/u/Data/')) return { path: p, uuid: 'aaaa', relPath: p.slice('/media/u/Data'.length), systemDisk: false, mountPoint: '/media/u/Data', fsType: 'ext4', device: '/dev/sda1' }
    if (p.startsWith('/home/u/')) return { path: p, uuid: null, relPath: null, systemDisk: true, mountPoint: '/', fsType: 'ext4', device: '/dev/dm-0' }
    throw new MounterRejected('只能选择 /home、/mnt、/media 下的目录', 'not_allowed')
  }
  async test(remote: RemoteSpec) {
    this.guard()
    this.tests.push(remote)
    return remote.secrets.secretAccessKey === 'sk-secret'
      ? { state: 'ok' as const, message: '', entries: ['产品手册/'] }
      : { state: 'auth_failed' as const, message: '认证失败或没有权限：SignatureDoesNotMatch', entries: null }
  }
  private rows(): MountStatusRow[] {
    return (this.synced.at(-1) ?? []).map(m => ({ id: m.id, ...(this.states.get(m.id) ?? { state: 'ok', message: null, since: '2026-11-06T00:00:00Z' }) }))
  }
  async sync(mounts: MountSpec[]) {
    this.guard()
    this.synced.push(mounts)
    return this.rows()
  }
  async status() {
    this.guard()
    return { version: 'test', mounts: this.rows() }
  }
}
const mounter = new FakeMounter()

let app: App
let site: http.Server
let siteOrigin: string

beforeAll(async () => {
  app = createApp(pino({ level: 'silent' }), { providers: {}, mounter })
  site = http.createServer((req, res) => {
    if (req.url === '/missing') return res.writeHead(404).end()
    res.setHeader('content-type', 'text/html; charset=utf-8')
    res.end('<html><head><title> 产品 手册 </title></head><body>x</body></html>')
  })
  await new Promise<void>(r => site.listen(0, '127.0.0.1', r))
  siteOrigin = `http://127.0.0.1:${(site.address() as AddressInfo).port}`
})
afterAll(() => {
  site.close()
})

const profile = (over: Partial<ProfileInput> = {}): ProfileInput => ({
  name: '资料测试', description: '', provider: 'claude', model: 'haiku', systemPrompt: '', permissionMode: 'ask',
  allowedTools: [], disallowedTools: [], skills: 'all', fileAccess: { mode: 'restricted', read: [], write: [], deny: [] },
  knowledgeRootIds: [], isDefault: false, ...over,
})

describe('资料库类型', () => {
  it('托管目录：平台在 files/<id> 下创建目录，可以设为 Agent 可写；删除时连同文件一起删除', async () => {
    const k = await app.knowledge.create({ kind: 'managed', name: '产品资料', description: '产品手册', access: 'write' })
    expect(k.path).toBe(path.join(knowledgeFilesDir(), k.id))
    expect(fs.statSync(k.path).isDirectory()).toBe(true)
    expect(k).toMatchObject({ kind: 'managed', access: 'write', url: null, status: { state: 'ok' } })
    fs.writeFileSync(path.join(k.path, 'a.md'), 'x')
    expect((await app.knowledge.update(k.id, { kind: 'managed', name: '产品资料', access: 'read' })).access).toBe('read')
    app.knowledge.delete(k.id)
    expect(fs.existsSync(k.path)).toBe(false)
  })

  it('网络链接：只接受 http/https，不能带用户名密码；没有目录、只读', async () => {
    const k = await app.knowledge.create({ kind: 'link', name: '内部文档', url: 'http://wiki.local/docs/', access: 'write' })
    expect(k).toMatchObject({ path: '', url: 'http://wiki.local/docs/', access: 'read', status: { state: 'ok' } })
    await expect(app.knowledge.create({ kind: 'link', name: 'ftp', url: 'ftp://a.com/x' })).rejects.toThrow(/http/)
    await expect(app.knowledge.create({ kind: 'link', name: '坏链接', url: 'not a url' })).rejects.toThrow(/格式不正确/)
    await expect(app.knowledge.create({ kind: 'link', name: '带密码', url: 'http://u:p@a.com/' })).rejects.toThrow(/用户名或密码/)
  })

  it('名称不能重复；类型不能修改；远程存储必须填写连接参数', async () => {
    const k = app.knowledge.list().find(x => x.name === '内部文档')!
    await expect(app.knowledge.create({ kind: 'managed', name: '内部文档' })).rejects.toThrow(/已被使用/)
    await expect(app.knowledge.update(k.id, { kind: 'managed', name: '内部文档' })).rejects.toThrow(/类型不能修改/)
    await expect(app.knowledge.create({ kind: 'remote', name: '远程' })).rejects.toThrow(/连接参数/)
  })

  it('测试访问：返回状态码、标题；失败时给出原因', async () => {
    expect(await app.knowledge.testLink(`${siteOrigin}/docs`)).toMatchObject({ ok: true, status: 200, contentType: 'text/html', title: '产品 手册' })
    expect(await app.knowledge.testLink(`${siteOrigin}/missing`)).toMatchObject({ ok: false, status: 404, error: 'HTTP 404' })
    expect((await app.knowledge.testLink('http://127.0.0.1:1/')).ok).toBe(false)
  })

  it('提示词清单：标出类型、读写、链接的放行站点与不可用原因', () => {
    const roots = [
      ...app.knowledge.list(),
      { ...app.knowledge.list()[0]!, id: 'kb_x', name: '移动硬盘', kind: 'local' as const, path: '/srv/agent-server/knowledge/mnt/kb_x', status: { state: 'device_missing' as const, message: '设备未连接', since: null } },
    ]
    const text = describeKnowledge(roots)
    expect(text).toContain('- 内部文档（网络链接，只读）：http://wiki.local/docs/')
    expect(text).toContain('同一站点（http://wiki.local）下的地址都可以访问')
    expect(text).toContain('- 移动硬盘（本机目录，只读，暂不可用：设备未连接）：/srv/agent-server/knowledge/mnt/kb_x')
    expect(linkOrigins(roots)).toEqual(['http://wiki.local'])
  })
})

describe('资料集合', () => {
  it('Profile 生效的资料库 = 单独勾选的 ∪ 集合成员，去掉停用的；集合成员变化立即生效', async () => {
    const a = await app.knowledge.create({ kind: 'managed', name: '合同' })
    const b = await app.knowledge.create({ kind: 'managed', name: '发票' })
    const c = await app.knowledge.create({ kind: 'link', name: '报价单', url: 'https://erp.example.com/quotes' })
    const col = app.knowledge.createCollection({ name: '财务', description: '财务相关', rootIds: [a.id, b.id, a.id] })
    expect(col.rootIds).toEqual([a.id, b.id])
    expect(app.knowledge.get(a.id).collectionIds).toEqual([col.id])

    const p = app.profiles.create(profile({ knowledgeRootIds: [c.id], knowledgeCollectionIds: [col.id] }))
    expect(p.knowledgeCollectionIds).toEqual([col.id])
    const names = () => app.knowledge.effective(app.profiles.get(p.id)).map(k => k.name).sort()
    expect(names()).toEqual(['发票', '合同', '报价单'])

    await app.knowledge.update(b.id, { kind: 'managed', name: '发票', enabled: false })
    expect(names()).toEqual(['合同', '报价单'])
    app.knowledge.updateCollection(col.id, { name: '财务', rootIds: [a.id] })
    await app.knowledge.update(b.id, { kind: 'managed', name: '发票', enabled: true })
    expect(names()).toEqual(['合同', '报价单'])

    // 被 Profile 使用的集合不能删除；删除资料库时从集合中移除
    expect(app.knowledge.collection(col.id).usedBy).toEqual([{ id: p.id, name: '资料测试' }])
    expect(() => app.knowledge.deleteCollection(col.id)).toThrow(/正被 Profile 使用/)
    app.knowledge.delete(a.id)
    expect(app.knowledge.collection(col.id).rootIds).toEqual([])
    expect(names()).toEqual(['报价单'])
  })

  it('校验：名称不能重复，成员必须存在；Profile 只能引用已有的集合，恢复旧版本时忽略已删除的集合', () => {
    const col = app.knowledge.collections().find(x => x.name === '财务')!
    expect(() => app.knowledge.createCollection({ name: '财务', rootIds: [] })).toThrow(/已被使用/)
    expect(() => app.knowledge.createCollection({ name: '空', rootIds: ['kb_nope'] })).toThrow(/不存在/)
    expect(() => app.profiles.create(profile({ name: '坏引用', knowledgeCollectionIds: ['kbc_nope'] }))).toThrow(/资料集合不存在/)

    const temp = app.knowledge.createCollection({ name: '临时', rootIds: [] })
    const p = app.profiles.create(profile({ name: '版本测试', knowledgeCollectionIds: [temp.id, col.id] }))
    const v2 = app.profiles.update(p.id, profile({ name: '版本测试', knowledgeCollectionIds: [col.id] }))
    expect(app.profiles.versions(p.id)[0]!.changed).toEqual(['knowledgeCollectionIds'])
    app.knowledge.deleteCollection(temp.id)
    expect(app.profiles.restore(p.id, 1).knowledgeCollectionIds).toEqual([col.id])
    expect(v2.version).toBe(2)
  })
})

describe('本机目录（挂载服务）', () => {
  const settle = () => new Promise(r => setTimeout(r, 20))

  it('新建时由挂载服务检查并识别设备；登记列表同步给挂载服务，状态来自挂载服务', async () => {
    const home = await app.knowledge.create({ kind: 'local', name: '项目文档', localPath: '/home/u/docs' })
    expect(home).toMatchObject({ kind: 'local', access: 'read', path: path.join(knowledgeMountDir(), home.id), local: { path: '/home/u/docs', uuid: null, relPath: null } })
    const disk = await app.knowledge.create({ kind: 'local', name: '移动硬盘资料', localPath: '/media/u/Data/资料', access: 'write' })
    expect(disk).toMatchObject({ access: 'read', local: { path: '/media/u/Data/资料', uuid: 'aaaa', relPath: '/资料' } })
    await settle()
    expect(mounter.synced.at(-1)).toEqual(expect.arrayContaining([
      { id: home.id, kind: 'local', local: { path: '/home/u/docs', uuid: null, relPath: null } },
      { id: disk.id, kind: 'local', local: { path: '/media/u/Data/资料', uuid: 'aaaa', relPath: '/资料' } },
    ]))
    expect(app.knowledge.get(home.id).status.state).toBe('ok')

    // 设备拔出：状态与原因来自挂载服务，提示词中标注暂不可用
    mounter.states.set(disk.id, { state: 'device_missing', message: '设备未连接（文件系统 UUID aaaa）', since: '2026-11-06T01:00:00Z' })
    await app.knowledge.refreshMounts()
    expect(app.knowledge.get(disk.id).status).toEqual({ state: 'device_missing', message: '设备未连接（文件系统 UUID aaaa）', since: '2026-11-06T01:00:00Z' })
    expect(describeKnowledge([app.knowledge.get(disk.id)])).toContain('（本机目录，只读，暂不可用：设备未连接（文件系统 UUID aaaa））')
    mounter.states.delete(disk.id)

    // 停用后不再挂载；删除后从登记列表中移除
    await app.knowledge.update(home.id, { kind: 'local', name: '项目文档', localPath: '/home/u/docs', enabled: false })
    await settle()
    expect(mounter.synced.at(-1)!.map(m => m.id)).not.toContain(home.id)
    app.knowledge.delete(home.id)
    await settle()
    expect(app.knowledge.list().some(k => k.id === home.id)).toBe(false)
  })

  it('挂载服务拒绝的目录不能登记；路径不变时修改名称不重新检查', async () => {
    await expect(app.knowledge.create({ kind: 'local', name: '系统目录', localPath: '/etc' })).rejects.toThrow(/只能选择/)
    await expect(app.knowledge.create({ kind: 'local', name: '空路径' })).rejects.toThrow(/请选择本机目录/)
    const k = app.knowledge.list().find(x => x.name === '移动硬盘资料')!
    mounter.checks = []
    await app.knowledge.update(k.id, { kind: 'local', name: '移动硬盘', localPath: '/media/u/Data/资料' })
    expect(mounter.checks).toEqual([])
    expect(app.knowledge.get(k.id).local).toEqual({ path: '/media/u/Data/资料', uuid: 'aaaa', relPath: '/资料' })
  })

  it('挂载服务不可用：本机目录状态为 mounter_down，不能新建；恢复后重新同步', async () => {
    mounter.up = false
    await app.knowledge.refreshMounts()
    const k = app.knowledge.list().find(x => x.name === '移动硬盘')!
    expect(k.status).toMatchObject({ state: 'mounter_down', message: '挂载服务没有运行' })
    expect(app.knowledge.mounterInfo()).toEqual({ available: false, version: null, error: '挂载服务没有运行' })
    await expect(app.knowledge.create({ kind: 'local', name: '新目录', localPath: '/home/u/new' })).rejects.toMatchObject({ status: 503 })
    await expect(app.knowledge.browse('/home')).rejects.toThrow(/agent-mounter/)
    // 挂载服务不可用时仍可修改名称、说明，也可以停用
    await app.knowledge.update(k.id, { kind: 'local', name: '移动硬盘', description: '合同扫描件', localPath: '/media/u/Data/资料', enabled: false })

    // 恢复后：挂载服务的登记与平台不一致，重新同步
    mounter.up = true
    await app.knowledge.refreshMounts()
    expect(app.knowledge.mounterInfo()).toEqual({ available: true, version: 'test', error: null })
    await settle()
    expect(mounter.synced.at(-1)!.map(m => m.id)).not.toContain(k.id)
    await app.knowledge.update(k.id, { kind: 'local', name: '移动硬盘', localPath: '/media/u/Data/资料', enabled: true })
    await settle()
    expect(mounter.synced.at(-1)!.map(m => m.id)).toContain(k.id)
    expect(app.knowledge.get(k.id).status.state).toBe('ok')
  })
})

describe('远程存储', () => {
  const settle = () => new Promise(r => setTimeout(r, 20))
  const s3 = (secrets: { name: string; value: string | null }[], params: Record<string, string> = {}) => ({
    type: 's3' as const,
    params: { provider: 'Minio', endpoint: 'http://127.0.0.1:9198', bucket: 'agentserver-kb', prefix: 'docs', unknown: 'x', ...params },
    secrets,
  })

  it('凭据只写不读：DTO 只显示是否已设置；留空沿用原值；随登记列表发给挂载服务', async () => {
    await expect(app.knowledge.create({ kind: 'remote', name: '对象存储', remote: s3([{ name: 'accessKeyId', value: 'agentserver' }]) })).rejects.toThrow(/Secret Key/)
    await expect(app.knowledge.create({ kind: 'remote', name: '对象存储', remote: s3([], { bucket: '' }) })).rejects.toThrow(/存储桶/)
    await expect(app.knowledge.create({ kind: 'remote', name: '对象存储', remote: s3([], { endpoint: 'http://u:p@x/' }) })).rejects.toThrow(/用户名或密码/)
    await expect(app.knowledge.create({ kind: 'remote', name: '对象存储', remote: s3([], { provider: 'Evil' }) })).rejects.toThrow(/服务商不正确/)

    const k = await app.knowledge.create({ kind: 'remote', name: '对象存储', access: 'write', remote: s3([{ name: 'accessKeyId', value: 'agentserver' }, { name: 'secretAccessKey', value: 'sk-secret' }]) })
    expect(k).toMatchObject({
      kind: 'remote', access: 'read', path: path.join(knowledgeMountDir(), k.id),
      remote: { type: 's3', params: { provider: 'Minio', endpoint: 'http://127.0.0.1:9198', bucket: 'agentserver-kb', prefix: 'docs' }, secrets: [{ name: 'accessKeyId', isSet: true }, { name: 'secretAccessKey', isSet: true }] },
    })
    expect(k.remote!.params).not.toHaveProperty('unknown')
    expect(JSON.stringify(app.knowledge.list())).not.toContain('sk-secret')
    await settle()
    expect(mounter.synced.at(-1)).toContainEqual({ id: k.id, kind: 'remote', remote: { type: 's3', params: k.remote!.params, secrets: { accessKeyId: 'agentserver', secretAccessKey: 'sk-secret' } } })

    // 修改时凭据留空：沿用原值
    await app.knowledge.update(k.id, { kind: 'remote', name: '对象存储', remote: s3([{ name: 'accessKeyId', value: null }, { name: 'secretAccessKey', value: '' }], { prefix: '' }) })
    await settle()
    const spec = mounter.synced.at(-1)!.find(m => m.id === k.id)!
    expect(spec).toMatchObject({ remote: { secrets: { accessKeyId: 'agentserver', secretAccessKey: 'sk-secret' } } })
    expect(spec.kind === 'remote' && spec.remote.params).not.toHaveProperty('prefix')

    // 提示词中标注远程资料
    expect(describeKnowledge([app.knowledge.get(k.id)])).toContain('远程资料：先按文件名和目录结构查找')
  })

  it('测试连接：新建时用填写的凭据；编辑时没有重新填写的凭据沿用原值', async () => {
    const k = app.knowledge.list().find(x => x.name === '对象存储')!
    expect(await app.knowledge.testRemote(s3([{ name: 'accessKeyId', value: 'a' }, { name: 'secretAccessKey', value: 'wrong' }]))).toEqual({ ok: false, state: 'auth_failed', message: '认证失败或没有权限：SignatureDoesNotMatch', entries: [] })
    expect(await app.knowledge.testRemote(s3([]), k.id)).toEqual({ ok: true, state: 'ok', message: null, entries: ['产品手册/'] })
    expect(mounter.tests.at(-1)!.secrets).toEqual({ accessKeyId: 'agentserver', secretAccessKey: 'sk-secret' })
    // 换了存储类型：不沿用原来的凭据
    await expect(app.knowledge.testRemote({ type: 'webdav', params: { url: 'http://dav.local/' }, secrets: [] }, k.id)).resolves.toMatchObject({ ok: false })
    expect(mounter.tests.at(-1)!.secrets).toEqual({})
    await expect(app.knowledge.testRemote({ type: 'webdav', params: {}, secrets: [] })).rejects.toThrow(/请填写地址/)
  })

  it('停用后不再挂载', async () => {
    const k = app.knowledge.list().find(x => x.name === '对象存储')!
    await app.knowledge.update(k.id, { kind: 'remote', name: '对象存储', enabled: false, remote: s3([]) })
    await settle()
    expect(mounter.synced.at(-1)!.map(m => m.id)).not.toContain(k.id)
  })
})