feat: add admin password reset

docs/superpowers/plans/2026-06-16-admin-reset-password.md

@@ -226,6 +226,18 @@ In `src/components/AdminPage.test.ts`, update the import line:
 import { beforeEach, describe, expect, it, vi } from 'vitest'
 ```
 
+Update `beforeEach()` so one-shot mock responses from reset tests cannot leak into later tests:
+
+```ts
+  beforeEach(() => {
+    authedFetch.mockReset()
+    logout.mockReset()
+    authedFetch.mockResolvedValue([
+      { id: 'u1', username: 'teacher', role: 'user', createdAt: '2026-01-01T00:00:00.000Z' },
+    ])
+  })
+```
+
 Append these tests inside `describe('AdminPage', () => { ... })`:
 
 ```ts

server/db.test.ts

@@ -2,8 +2,8 @@ import { afterEach, describe, expect, it, setSystemTime } from 'bun:test'
 import { createEmptyBook, createEmptyTeachingDesign } from '../src/domain/teachingDesign'
 import {
   createBook, deleteBook, getBook, listBooks, openDb, renameBook, saveBookData,
-  createUser, findUserByUsername, findUserById, listUsers, deleteUser,
-  createRefreshToken, findRefreshTokenByHash, deleteRefreshTokenByHash,
+  createUser, findUserByUsername, findUserById, listUsers, deleteUser, updateUserPasswordHash,
+  createRefreshToken, findRefreshTokenByHash, deleteRefreshTokenByHash, deleteRefreshTokensForUser,
 } from './db'
 
 afterEach(() => {
@@ -143,6 +143,19 @@ describe('users and refresh tokens', () => {
     expect(deleteUser(db, 'missing')).toBe(false)
   })
 
+  it('updates a user password hash', () => {
+    const db = openDb(':memory:')
+    const user = createUser(db, { username: 'frank', passwordHash: 'old-hash', role: 'user' })
+
+    expect(updateUserPasswordHash(db, user.id, 'new-hash')).toBe(true)
+    expect(findUserById(db, user.id)?.passwordHash).toBe('new-hash')
+  })
+
+  it('returns false when updating password hash for missing user', () => {
+    const db = openDb(':memory:')
+    expect(updateUserPasswordHash(db, 'missing', 'new-hash')).toBe(false)
+  })
+
   it('creates and finds a refresh token by hash', () => {
     const db = openDb(':memory:')
     const user = createUser(db, { username: 'dave', passwordHash: 'h', role: 'user' })
@@ -159,4 +172,16 @@ describe('users and refresh tokens', () => {
     expect(deleteRefreshTokenByHash(db, 'xyz')).toBe(true)
     expect(findRefreshTokenByHash(db, 'xyz')).toBeNull()
   })
+
+  it('deletes refresh tokens for one user', () => {
+    const db = openDb(':memory:')
+    const first = createUser(db, { username: 'grace', passwordHash: 'h', role: 'user' })
+    const second = createUser(db, { username: 'heidi', passwordHash: 'h', role: 'user' })
+    createRefreshToken(db, { userId: first.id, tokenHash: 'first-token', expiresAt: '2099-01-01T00:00:00.000Z' })
+    createRefreshToken(db, { userId: second.id, tokenHash: 'second-token', expiresAt: '2099-01-01T00:00:00.000Z' })
+
+    expect(deleteRefreshTokensForUser(db, first.id)).toBe(1)
+    expect(findRefreshTokenByHash(db, 'first-token')).toBeNull()
+    expect(findRefreshTokenByHash(db, 'second-token')).not.toBeNull()
+  })
 })

server/db.ts

@@ -206,6 +206,11 @@ export function deleteUser(db: Database, id: string): boolean {
   return result.changes > 0
 }
 
+export function updateUserPasswordHash(db: Database, id: string, passwordHash: string): boolean {
+  const result = db.run('UPDATE users SET password_hash = ? WHERE id = ?', [passwordHash, id])
+  return result.changes > 0
+}
+
 export function createRefreshToken(
   db: Database,
   params: { userId: string; tokenHash: string; expiresAt: string },
@@ -233,3 +238,8 @@ export function deleteRefreshTokenByHash(db: Database, tokenHash: string): boole
   const result = db.run('DELETE FROM refresh_tokens WHERE token_hash = ?', [tokenHash])
   return result.changes > 0
 }
+
+export function deleteRefreshTokensForUser(db: Database, userId: string): number {
+  const result = db.run('DELETE FROM refresh_tokens WHERE user_id = ?', [userId])
+  return result.changes
+}

server/routes/admin.test.ts

@@ -1,8 +1,8 @@
 import { beforeEach, describe, expect, it } from 'bun:test'
 import type { Database } from 'bun:sqlite'
 import { Hono } from 'hono'
-import { hashPassword, signAccessToken } from '../auth'
-import { createUser, openDb } from '../db'
+import { hashPassword, signAccessToken, verifyPassword } from '../auth'
+import { createRefreshToken, createUser, findRefreshTokenByHash, findUserById, openDb } from '../db'
 import { createAdminRouter } from './admin'
 
 const JWT_SECRET = 'test-secret'
@@ -95,4 +95,41 @@ describe('admin routes', () => {
     })
     expect(res.status).toBe(404)
   })
+
+  it('resets a user password to the fixed temporary password', async () => {
+    createRefreshToken(db, { userId, tokenHash: 'user-refresh-token', expiresAt: '2099-01-01T00:00:00.000Z' })
+
+    const res = await app.request(`/api/admin/users/${userId}/reset-password`, {
+      method: 'POST',
+      headers: { Authorization: `Bearer ${adminToken}` },
+    })
+
+    expect(res.status).toBe(200)
+    expect(await res.json()).toEqual({ ok: true })
+
+    const updated = findUserById(db, userId)
+    expect(updated).not.toBeNull()
+    expect(await verifyPassword('123456', updated!.passwordHash)).toBe(true)
+    expect(await verifyPassword('userpass', updated!.passwordHash)).toBe(false)
+    expect(findRefreshTokenByHash(db, 'user-refresh-token')).toBeNull()
+  })
+
+  it('returns 404 when resetting password for missing user', async () => {
+    const res = await app.request('/api/admin/users/missing/reset-password', {
+      method: 'POST',
+      headers: { Authorization: `Bearer ${adminToken}` },
+    })
+
+    expect(res.status).toBe(404)
+    expect(await res.json()).toEqual({ error: '用户不存在' })
+  })
+
+  it('returns 403 when non-admin resets a password', async () => {
+    const res = await app.request(`/api/admin/users/${adminId}/reset-password`, {
+      method: 'POST',
+      headers: { Authorization: `Bearer ${userToken}` },
+    })
+
+    expect(res.status).toBe(403)
+  })
 })

server/routes/admin.ts

@@ -1,9 +1,11 @@
 import type { Database } from 'bun:sqlite'
 import { Hono } from 'hono'
 import { hashPassword } from '../auth'
-import { createUser, deleteUser, listUsers } from '../db'
+import { createUser, deleteRefreshTokensForUser, deleteUser, findUserById, listUsers, updateUserPasswordHash } from '../db'
 import { bearerAuth, type AuthVariables } from '../middleware/bearerAuth'
 
+const RESET_PASSWORD = '123456'
+
 export function createAdminRouter(db: Database, jwtSecret: string) {
   const app = new Hono<{ Variables: AuthVariables }>()
 
@@ -39,6 +41,18 @@ export function createAdminRouter(db: Database, jwtSecret: string) {
     return c.json({ id: user.id, username: user.username, role: user.role, createdAt: user.createdAt })
   })
 
+  app.post('/users/:id/reset-password', async (c) => {
+    const targetId = c.req.param('id')
+    if (!findUserById(db, targetId)) {
+      return c.json({ error: '用户不存在' }, 404)
+    }
+
+    const passwordHash = await hashPassword(RESET_PASSWORD)
+    updateUserPasswordHash(db, targetId, passwordHash)
+    deleteRefreshTokensForUser(db, targetId)
+    return c.json({ ok: true })
+  })
+
   app.delete('/users/:id', (c) => {
     const targetId = c.req.param('id')
     if (targetId === c.get('userId')) {

src/components/AdminPage.test.ts

@@ -14,7 +14,8 @@ vi.mock('../composables/useAuth', () => ({
 
 describe('AdminPage', () => {
   beforeEach(() => {
-    vi.clearAllMocks()
+    authedFetch.mockReset()
+    logout.mockReset()
     authedFetch.mockResolvedValue([
       { id: 'u1', username: 'teacher', role: 'user', createdAt: '2026-01-01T00:00:00.000Z' },
     ])
@@ -33,8 +34,42 @@ describe('AdminPage', () => {
       expect.arrayContaining(['ui-button', 'ui-button--primary']),
     )
     expect(wrapper.get('table').classes()).toContain('ui-table')
+    expect(wrapper.get('button[data-testid="reset-password-u1"]').classes()).toContain('ui-button')
     expect(wrapper.get('button[data-testid="delete-user-u1"]').classes()).toEqual(
       expect.arrayContaining(['ui-button', 'ui-button--danger']),
     )
   })
+
+  it('resets a user password after confirmation', async () => {
+    vi.spyOn(window, 'confirm').mockReturnValue(true)
+    authedFetch.mockResolvedValueOnce([
+      { id: 'u1', username: 'teacher', role: 'user', createdAt: '2026-01-01T00:00:00.000Z' },
+    ])
+    authedFetch.mockResolvedValueOnce({ ok: true })
+
+    const wrapper = mount(AdminPage)
+    await flushPromises()
+
+    await wrapper.get('button[data-testid="reset-password-u1"]').trigger('click')
+    await flushPromises()
+
+    expect(window.confirm).toHaveBeenCalledWith('确定要将该用户密码重置为 123456 吗？')
+    expect(authedFetch).toHaveBeenCalledWith('/api/admin/users/u1/reset-password', { method: 'POST' })
+    expect(wrapper.text()).toContain('已将密码重置为 123456。')
+  })
+
+  it('does not reset a password when confirmation is declined', async () => {
+    vi.spyOn(window, 'confirm').mockReturnValue(false)
+    authedFetch.mockResolvedValueOnce([
+      { id: 'u1', username: 'teacher', role: 'user', createdAt: '2026-01-01T00:00:00.000Z' },
+    ])
+
+    const wrapper = mount(AdminPage)
+    await flushPromises()
+
+    await wrapper.get('button[data-testid="reset-password-u1"]').trigger('click')
+    await flushPromises()
+
+    expect(authedFetch).toHaveBeenCalledTimes(1)
+  })
 })

src/components/AdminPage.vue

@@ -11,6 +11,7 @@ const newUsername = ref('')
 const newPassword = ref('')
 const newRole = ref<'user' | 'admin'>('user')
 const error = ref('')
+const success = ref('')
 const loading = ref(false)
 
 async function loadUsers(): Promise<void> {
@@ -24,6 +25,7 @@ async function loadUsers(): Promise<void> {
 async function createUser(): Promise<void> {
   if (!newUsername.value.trim() || !newPassword.value) return
   error.value = ''
+  success.value = ''
   loading.value = true
   try {
     await authedFetch('/api/admin/users', {
@@ -55,6 +57,18 @@ async function removeUser(id: string): Promise<void> {
   }
 }
 
+async function resetPassword(id: string): Promise<void> {
+  if (!confirm('确定要将该用户密码重置为 123456 吗？')) return
+  error.value = ''
+  success.value = ''
+  try {
+    await authedFetch(`/api/admin/users/${id}/reset-password`, { method: 'POST' })
+    success.value = '已将密码重置为 123456。'
+  } catch (e) {
+    error.value = e instanceof Error ? e.message : '重置失败'
+  }
+}
+
 async function handleLogout(): Promise<void> {
   await logout()
 }
@@ -96,6 +110,7 @@ onMounted(loadUsers)
         </button>
       </form>
       <p v-if="error" class="ui-error">{{ error }}</p>
+      <p v-if="success" class="ui-success">{{ success }}</p>
     </section>
 
     <section class="user-list">
@@ -115,6 +130,14 @@ onMounted(loadUsers)
             <td>{{ u.role === 'admin' ? '管理员' : '普通用户' }}</td>
             <td>{{ new Date(u.createdAt).toLocaleDateString('zh-CN') }}</td>
             <td>
+              <button
+                class="ui-button"
+                type="button"
+                :data-testid="`reset-password-${u.id}`"
+                @click="resetPassword(u.id)"
+              >
+                重置密码
+              </button>
               <button
                 class="ui-button ui-button--danger"
                 type="button"

src/style.css

@@ -162,6 +162,12 @@ input {
   margin: 8px 0 0;
 }
 
+.ui-success {
+  color: var(--green-700);
+  font-size: 14px;
+  margin: 8px 0 0;
+}
+
 /* Toolbar */
 .workspace-toolbar {
   display: flex;