77 lines
2.5 KiB
Python
77 lines
2.5 KiB
Python
from datetime import datetime
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from sqlalchemy import select, func
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from sqlalchemy.ext.asyncio import AsyncSession
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from backend.models.author import Author
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from backend.models.post import Post
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from backend.models.comment import Comment
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async def list_authors(
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db: AsyncSession,
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subreddit_id: int | None = None,
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sort_by: str = "total_comments",
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sort_order: str = "desc",
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since: datetime | None = None,
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until: datetime | None = None,
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page: int = 1,
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per_page: int = 25,
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) -> tuple[list[dict], int]:
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base = select(Author)
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if subreddit_id or since or until:
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# Need to compute activity counts with filters
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post_count = (
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select(func.count(Post.id))
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.where(Post.author_id == Author.id)
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)
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comment_count = (
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select(func.count(Comment.id))
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.where(Comment.author_id == Author.id)
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)
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if subreddit_id:
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post_count = post_count.where(Post.subreddit_id == subreddit_id)
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comment_count = comment_count.join(Post).where(Post.subreddit_id == subreddit_id)
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if since:
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post_count = post_count.where(Post.created_utc >= since)
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comment_count = comment_count.where(Comment.created_utc >= since)
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if until:
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post_count = post_count.where(Post.created_utc <= until)
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comment_count = comment_count.where(Comment.created_utc <= until)
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base = select(
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Author,
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post_count.correlate(Author).scalar_subquery().label("filtered_posts"),
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comment_count.correlate(Author).scalar_subquery().label("filtered_comments"),
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)
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else:
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base = select(Author)
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count_stmt = select(func.count()).select_from(base.subquery())
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total = (await db.execute(count_stmt)).scalar() or 0
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sort_col = getattr(Author, sort_by, Author.total_comments)
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if sort_order == "asc":
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base = base.order_by(sort_col.asc())
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else:
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base = base.order_by(sort_col.desc())
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base = base.offset((page - 1) * per_page).limit(per_page)
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result = await db.execute(base)
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authors = []
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for row in result.all():
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author = row[0]
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data = {c.name: getattr(author, c.name) for c in author.__table__.columns}
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authors.append(data)
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return authors, total
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async def get_author(db: AsyncSession, author_id: int) -> dict | None:
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author = await db.get(Author, author_id)
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if not author:
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return None
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return {c.name: getattr(author, c.name) for c in author.__table__.columns}
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