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Wire up ContainerRelation tracking via attach_child/detach_child in: - calendars: create (including revive), soft_delete - markets: create (including revive), soft_delete Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
114 lines
3.5 KiB
Python
114 lines
3.5 KiB
Python
from __future__ import annotations
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from sqlalchemy import select
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from sqlalchemy.ext.asyncio import AsyncSession
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from models.calendars import Calendar
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from blog.models.ghost_content import Post # for FK existence checks
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from glue.services.relationships import attach_child, detach_child
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import unicodedata
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import re
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class CalendarError(ValueError):
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"""Base error for calendar service operations."""
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from shared.browser.app.utils import (
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utcnow
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)
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def slugify(value: str, max_len: int = 255) -> str:
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"""
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Make a URL-friendly slug:
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- lowercase
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- remove accents
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- replace any non [a-z0-9]+ with '-'
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- no forward slashes
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- collapse multiple dashes
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- trim leading/trailing dashes
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"""
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if value is None:
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value = ""
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# normalize accents -> ASCII
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value = unicodedata.normalize("NFKD", value)
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value = value.encode("ascii", "ignore").decode("ascii")
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value = value.lower()
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# explicitly block forward slashes
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value = value.replace("/", "-")
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# replace non-alnum with hyphen
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value = re.sub(r"[^a-z0-9]+", "-", value)
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# collapse multiple hyphens
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value = re.sub(r"-{2,}", "-", value)
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# trim hyphens and enforce length
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value = value.strip("-")[:max_len].strip("-")
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# fallback if empty
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return value or "calendar"
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async def soft_delete(sess: AsyncSession, post_slug: str, calendar_slug: str) -> bool:
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cal = (
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await sess.execute(
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select(Calendar)
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.join(Post, Calendar.container_id == Post.id)
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.where(Calendar.container_type == "page")
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.where(
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Post.slug == post_slug,
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Calendar.slug == calendar_slug,
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Calendar.deleted_at.is_(None),
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)
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)
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).scalar_one_or_none()
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if not cal:
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return False
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cal.deleted_at = utcnow()
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await sess.flush()
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await detach_child(sess, "page", cal.container_id, "calendar", cal.id)
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return True
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async def create_calendar(sess: AsyncSession, post_id: int, name: str) -> Calendar:
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"""
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Create a calendar for a post. Name must be unique per post.
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If a calendar with the same (post_id, name) exists but is soft-deleted,
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it will be revived (deleted_at=None).
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"""
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name = (name or "").strip()
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if not name:
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raise CalendarError("Calendar name must not be empty.")
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slug=slugify(name)
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# Ensure post exists (avoid silent FK errors in some DBs)
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post = (await sess.execute(select(Post).where(Post.id == post_id))).scalar_one_or_none()
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if not post:
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raise CalendarError(f"Post {post_id} does not exist.")
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# Enforce: calendars can only be created on pages with the calendar feature
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if not post.is_page:
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raise CalendarError("Calendars can only be created on pages, not posts.")
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# Look for existing (including soft-deleted)
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q = await sess.execute(
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select(Calendar).where(Calendar.container_type == "page", Calendar.container_id == post_id, Calendar.name == name)
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)
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existing = q.scalar_one_or_none()
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if existing:
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if existing.deleted_at is not None:
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existing.deleted_at = None # revive
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await sess.flush()
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await attach_child(sess, "page", post_id, "calendar", existing.id)
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return existing
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raise CalendarError(f'Calendar with slug "{slug}" already exists for post {post_id}.')
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cal = Calendar(container_type="page", container_id=post_id, name=name, slug=slug)
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sess.add(cal)
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await sess.flush()
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await attach_child(sess, "page", post_id, "calendar", cal.id)
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return cal
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