133 lines
4.1 KiB
Python
133 lines
4.1 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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from __future__ import annotations
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import db_pool
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from db.utils import get_cst_now_str
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def create_announcement(title, content, is_active=True):
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"""创建公告（默认启用；启用时会自动停用其他公告）"""
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title = (title or "").strip()
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content = (content or "").strip()
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if not title or not content:
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return None
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with db_pool.get_db() as conn:
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cursor = conn.cursor()
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cst_time = get_cst_now_str()
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if is_active:
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cursor.execute("UPDATE announcements SET is_active = 0, updated_at = ? WHERE is_active = 1", (cst_time,))
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cursor.execute(
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"""
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INSERT INTO announcements (title, content, is_active, created_at, updated_at)
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VALUES (?, ?, ?, ?, ?)
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""",
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(title, content, 1 if is_active else 0, cst_time, cst_time),
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)
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conn.commit()
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return cursor.lastrowid
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def get_announcement_by_id(announcement_id):
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"""根据ID获取公告"""
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with db_pool.get_db() as conn:
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cursor = conn.cursor()
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cursor.execute("SELECT * FROM announcements WHERE id = ?", (announcement_id,))
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row = cursor.fetchone()
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return dict(row) if row else None
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def get_announcements(limit=50, offset=0):
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"""获取公告列表（管理员用）"""
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with db_pool.get_db() as conn:
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cursor = conn.cursor()
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cursor.execute(
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"""
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SELECT * FROM announcements
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ORDER BY created_at DESC, id DESC
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LIMIT ? OFFSET ?
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""",
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(limit, offset),
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)
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return [dict(row) for row in cursor.fetchall()]
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def set_announcement_active(announcement_id, is_active):
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"""启用/停用公告；启用时会自动停用其他公告"""
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with db_pool.get_db() as conn:
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cursor = conn.cursor()
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cst_time = get_cst_now_str()
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if is_active:
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cursor.execute("UPDATE announcements SET is_active = 0, updated_at = ? WHERE is_active = 1", (cst_time,))
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cursor.execute(
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"""
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UPDATE announcements
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SET is_active = 1, updated_at = ?
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WHERE id = ?
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""",
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(cst_time, announcement_id),
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)
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else:
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cursor.execute(
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"""
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UPDATE announcements
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SET is_active = 0, updated_at = ?
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WHERE id = ?
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""",
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(cst_time, announcement_id),
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)
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conn.commit()
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return cursor.rowcount > 0
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def delete_announcement(announcement_id):
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"""删除公告（同时清理用户关闭记录）"""
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with db_pool.get_db() as conn:
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cursor = conn.cursor()
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cursor.execute("DELETE FROM announcement_dismissals WHERE announcement_id = ?", (announcement_id,))
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cursor.execute("DELETE FROM announcements WHERE id = ?", (announcement_id,))
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conn.commit()
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return cursor.rowcount > 0
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def get_active_announcement_for_user(user_id):
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"""获取当前用户应展示的启用公告（已永久关闭的不再返回）"""
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with db_pool.get_db() as conn:
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cursor = conn.cursor()
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cursor.execute(
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"""
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SELECT a.*
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FROM announcements a
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LEFT JOIN announcement_dismissals d
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ON d.announcement_id = a.id AND d.user_id = ?
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WHERE a.is_active = 1 AND d.announcement_id IS NULL
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ORDER BY a.created_at DESC, a.id DESC
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LIMIT 1
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""",
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(user_id,),
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)
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row = cursor.fetchone()
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return dict(row) if row else None
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def dismiss_announcement_for_user(user_id, announcement_id):
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"""用户永久关闭某条公告（幂等）"""
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with db_pool.get_db() as conn:
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cursor = conn.cursor()
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cst_time = get_cst_now_str()
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cursor.execute(
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"""
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INSERT OR IGNORE INTO announcement_dismissals (user_id, announcement_id, dismissed_at)
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VALUES (?, ?, ?)
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""",
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(user_id, announcement_id, cst_time),
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)
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conn.commit()
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return cursor.rowcount >= 0
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