74 lines
2.1 KiB
Python
74 lines
2.1 KiB
Python
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"""
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Service layer for Page CRUD operations.
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All DB queries are async; HTML body is sanitized on write.
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"""
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import nh3
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from typing import Optional
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from sqlalchemy import select, func
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from sqlalchemy.ext.asyncio import AsyncSession
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from app.models.page import Page
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from app.schemas.page import PageCreate, PageUpdate
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def _sanitize_body(body: str) -> str:
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"""Strip dangerous HTML tags/attributes using nh3."""
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return nh3.clean(body)
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async def get_published_pages(db: AsyncSession) -> list[Page]:
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result = await db.execute(
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select(Page).where(Page.published == True).order_by(Page.created_at.desc())
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)
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return list(result.scalars().all())
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async def get_page_by_slug(db: AsyncSession, slug: str, published_only: bool = True) -> Optional[Page]:
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stmt = select(Page).where(Page.slug == slug)
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if published_only:
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stmt = stmt.where(Page.published == True)
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result = await db.execute(stmt)
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return result.scalars().first()
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async def create_page(db: AsyncSession, data: PageCreate) -> Page:
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page = Page(
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title=data.title,
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slug=data.slug,
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body=_sanitize_body(data.body),
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meta_title=data.meta_title,
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meta_description=data.meta_description,
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og_image_url=data.og_image_url,
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published=data.published,
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)
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db.add(page)
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await db.flush()
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await db.refresh(page)
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return page
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async def update_page(db: AsyncSession, slug: str, data: PageUpdate) -> Optional[Page]:
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page = await get_page_by_slug(db, slug, published_only=False)
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if page is None:
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return None
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update_data = data.model_dump(exclude_unset=True)
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if "body" in update_data and update_data["body"] is not None:
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update_data["body"] = _sanitize_body(update_data["body"])
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for field, value in update_data.items():
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setattr(page, field, value)
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await db.flush()
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await db.refresh(page)
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return page
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async def delete_page(db: AsyncSession, slug: str) -> bool:
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page = await get_page_by_slug(db, slug, published_only=False)
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if page is None:
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return False
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await db.delete(page)
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await db.flush()
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return True
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