Files
ds-chat/backend/app/services/password_service.py
T
ksmithandClaude Sonnet 5 bd3e621e9f Support multiple named, saved custom themes per user
Replaces the single custom_theme_colors blob (one palette per user) with
a proper CustomTheme table -- users can now save, name, and switch
between as many custom palettes as they like, not just one.

Data model: users.active_custom_theme_id references whichever saved
CustomTheme (if any) is currently active; theme='custom' + that id
together determine what's rendered. The migration data-migrates any
already-saved single palette into a named CustomTheme row on upgrade,
and best-effort backfills the active one back into the old column shape
on downgrade.

New endpoints under /api/custom-themes: list, create, rename/recolor,
delete (falls back the user to a preset if the deleted theme was
active, so the two theme columns can never disagree), and activate.
UserRead.active_custom_theme is only populated when theme == 'custom'
even though the DB deliberately keeps the id set while a preset is
active, so switching to a preset and back doesn't lose the saved
palette.

ProfileModal now lists saved themes as swatches (click to activate,
pencil to edit -- active or not, trash to delete with a confirm), plus
a "+ New" button that creates, activates, and opens the editor for a
fresh theme immediately.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-08-17 07:53:05 -06:00

82 lines
2.6 KiB
Python

import secrets
from datetime import datetime, timezone
from sqlalchemy import select
from sqlalchemy.ext.asyncio import AsyncSession
from sqlalchemy.orm import selectinload
from app.models import PasswordReset, User
from app.security import hash_password, hash_token, verify_password
from app.services.email_service import send_email
class InvalidCurrentPasswordError(Exception):
pass
class PasswordResetInvalidError(Exception):
pass
async def change_password(
db: AsyncSession, user: User, current_password: str, new_password: str
) -> None:
if not verify_password(current_password, user.password_hash):
raise InvalidCurrentPasswordError()
user.password_hash = hash_password(new_password)
await db.commit()
async def request_password_reset(db: AsyncSession, email: str, base_url: str) -> None:
# Always returns normally, whether or not the email matched an account --
# the router never reveals which, to avoid leaking registered emails.
result = await db.execute(
select(User).where(User.email == email, User.is_active.is_(True))
)
user = result.scalar_one_or_none()
if user is None:
return
raw_token = secrets.token_urlsafe(32)
db.add(PasswordReset(user_id=user.id, token_hash=hash_token(raw_token)))
await db.commit()
reset_link = f"{base_url.rstrip('/')}/reset-password?token={raw_token}"
await send_email(
db,
email,
"Reset your DS Chat password",
f"Someone requested a password reset for this account.\n\n"
f"Reset it here:\n{reset_link}\n\n"
f"This link expires in 15 minutes. If you didn't request this, "
f"you can ignore this email.",
)
async def _get_valid_reset(db: AsyncSession, token: str) -> PasswordReset:
result = await db.execute(
select(PasswordReset).where(PasswordReset.token_hash == hash_token(token))
)
reset = result.scalar_one_or_none()
if reset is None or reset.used:
raise PasswordResetInvalidError()
if reset.expires_at <= datetime.now(timezone.utc):
raise PasswordResetInvalidError()
return reset
async def validate_reset_token(db: AsyncSession, token: str) -> None:
await _get_valid_reset(db, token)
async def complete_password_reset(db: AsyncSession, token: str, new_password: str) -> User:
reset = await _get_valid_reset(db, token)
user = await db.get(
User, reset.user_id, options=[selectinload(User.active_custom_theme)]
)
user.password_hash = hash_password(new_password)
reset.used = True
await db.commit()
await db.refresh(user)
return user