新增小程序后端代码，包括数据库、路由、服务层等。
小程序前后端打通，包括登录、注册、绑定设备、查询绑定信息，修改小朋友名称等功能。
This commit is contained in:
HycJack
226
mini-program/app/dao/binding.py
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226
mini-program/app/dao/binding.py
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import logging
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import uuid
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from collections.abc import Mapping
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from datetime import datetime, timedelta
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from typing import Optional
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from sqlalchemy import text
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from app.dao import BaseDAO
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logger = logging.getLogger("app.dao.binding")
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class BindingDAO(BaseDAO):
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def start_bind(self, user_id: int, device_id: str, child_id: int) -> str:
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bind_token = str(uuid.uuid4())
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expires_at = datetime.utcnow() + timedelta(minutes=10)
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self.db.execute(
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text(
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"""
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INSERT INTO device_bind_sessions (bind_token, device_id, initiator_user_id, target_child_id, expires_at, status)
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VALUES (:bind_token, :device_id, :initiator_user_id, :target_child_id, :expires_at, 1)
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"""
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),
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{
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"bind_token": bind_token,
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"device_id": device_id,
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"initiator_user_id": user_id,
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"target_child_id": child_id,
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"expires_at": expires_at,
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},
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)
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self.commit()
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return bind_token
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def get_session(self, bind_token: str, user_id: int) -> Optional[Mapping]:
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return (
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self.db.execute(
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text(
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"SELECT * FROM device_bind_sessions WHERE bind_token = :bind_token AND initiator_user_id = :user_id"
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),
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{"bind_token": bind_token, "user_id": user_id},
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)
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.mappings()
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.first()
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)
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def confirm_bind(self, session_id: int, device_id: str, child_id: int, user_id: int) -> None:
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self.db.execute(
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text("UPDATE device_bind_sessions SET status = 2, confirmed_at = CURRENT_TIMESTAMP WHERE id = :id"),
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{"id": session_id},
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)
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existing = self.db.execute(
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text("SELECT id FROM device_bindings WHERE device_id = :device_id OR child_id = :child_id"),
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{"device_id": device_id, "child_id": child_id},
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).scalar_one_or_none()
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if existing:
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self.db.execute(
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text(
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"UPDATE device_bindings SET child_id = :child_id, status = 1, unbound_at = NULL WHERE device_id = :device_id"
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),
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{"device_id": device_id, "child_id": child_id},
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)
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else:
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self.db.execute(
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text(
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"INSERT INTO device_bindings (device_id, child_id, status, bound_at) VALUES (:device_id, :child_id, 1, CURRENT_TIMESTAMP)"
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),
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{"device_id": device_id, "child_id": child_id},
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)
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self.db.execute(
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text(
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"INSERT INTO device_bind_history (device_id, child_id, bound_by_user_id, bind_source, bound_at) VALUES (:device_id, :child_id, :user_id, 1, CURRENT_TIMESTAMP)"
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),
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{"device_id": device_id, "child_id": child_id, "user_id": user_id},
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)
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self.commit()
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def direct_bind(self, device_id: str, child_id: int, user_id: int) -> None:
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# Check if binding exists for this device_id
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existing_by_device = (
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self.db.execute(
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text("SELECT id FROM device_bindings WHERE device_id = :device_id"),
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{"device_id": device_id},
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).fetchone()
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)
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# Check if this child is already bound to a different device
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existing_by_child = (
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self.db.execute(
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text("SELECT id FROM device_bindings WHERE child_id = :child_id AND status = 1"),
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{"child_id": child_id},
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).fetchone()
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)
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if existing_by_device:
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# Update existing binding for this device
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self.db.execute(
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text(
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"UPDATE device_bindings SET child_id = :child_id, status = 1, unbound_at = NULL WHERE device_id = :device_id"
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),
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{"device_id": device_id, "child_id": child_id},
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)
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self.db.execute(
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text(
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"INSERT INTO device_bind_history (device_id, child_id, bound_by_user_id, bind_source, bound_at) VALUES (:device_id, :child_id, :user_id, 2, CURRENT_TIMESTAMP)"
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),
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{"device_id": device_id, "child_id": child_id, "user_id": user_id},
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)
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self.commit()
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return
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elif existing_by_child:
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# Child already bound to another device - update that binding
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self.db.execute(
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text(
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"UPDATE device_bindings SET device_id = :device_id, status = 1, unbound_at = NULL WHERE child_id = :child_id AND status = 1"
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),
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{"device_id": device_id, "child_id": child_id},
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)
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# Skip INSERT since we updated
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self.db.execute(
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text(
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"INSERT INTO device_bind_history (device_id, child_id, bound_by_user_id, bind_source, bound_at) VALUES (:device_id, :child_id, :user_id, 2, CURRENT_TIMESTAMP)"
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),
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{"device_id": device_id, "child_id": child_id, "user_id": user_id},
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)
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self.commit()
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return
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else:
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# Insert new binding
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self.db.execute(
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text(
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"INSERT INTO device_bindings (device_id, child_id, status, bound_at) VALUES (:device_id, :child_id, 1, CURRENT_TIMESTAMP)"
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),
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{"device_id": device_id, "child_id": child_id},
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)
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# Add history
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self.db.execute(
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text(
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"INSERT INTO device_bind_history (device_id, child_id, bound_by_user_id, bind_source, bound_at) VALUES (:device_id, :child_id, :user_id, 2, CURRENT_TIMESTAMP)"
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),
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{"device_id": device_id, "child_id": child_id, "user_id": user_id},
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)
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self.commit()
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def get_current_by_user(self, user_id: int) -> Optional[Mapping]:
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return (
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self.db.execute(
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text(
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"""
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SELECT b.* FROM device_bindings b
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JOIN children c ON b.child_id = c.child_id
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WHERE c.parent_user_id = :user_id AND b.status = 1
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ORDER BY b.bound_at DESC
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LIMIT 1
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"""
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),
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{"user_id": user_id},
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)
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.mappings()
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.first()
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)
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def get_by_device(self, device_id: str, user_id: int) -> Optional[Mapping]:
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return (
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self.db.execute(
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text(
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"""
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SELECT b.* FROM device_bindings b
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JOIN children c ON b.child_id = c.child_id
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WHERE b.device_id = :device_id AND c.parent_user_id = :user_id AND b.status = 1
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"""
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),
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{"device_id": device_id, "user_id": user_id},
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)
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.mappings()
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.first()
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)
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def unbind(self, device_id: str, user_id: int) -> bool:
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row = self.get_by_device(device_id, user_id)
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if not row:
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return False
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self.db.execute(
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text("UPDATE device_bindings SET status = 0, unbound_at = CURRENT_TIMESTAMP WHERE id = :id"),
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{"id": row["id"]},
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)
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self.db.execute(
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text(
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"INSERT INTO device_bind_history (device_id, child_id, bound_by_user_id, unbound_by_user_id, bind_source, bound_at, unbound_at, unbind_reason) SELECT device_id, child_id, bound_by_user_id, :user_id, bind_source, bound_at, CURRENT_TIMESTAMP, 'user_unbind' FROM device_bind_history WHERE device_id = :device_id AND unbound_at IS NULL"
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),
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{"device_id": device_id, "user_id": user_id},
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)
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self.commit()
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return True
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def list_history(self, device_id: str, limit: int = 20, cursor: datetime = None) -> list[Mapping]:
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params = {"device_id": device_id, "limit": limit + 1}
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where = "device_id = :device_id"
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if cursor:
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where += " AND bound_at < :cursor"
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params["cursor"] = cursor
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rows = (
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self.db.execute(
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text(
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f"""
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SELECT * FROM device_bind_history
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WHERE {where}
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ORDER BY bound_at DESC
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LIMIT :limit
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"""
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),
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params,
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)
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.mappings()
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.all()
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)
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return rows
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