396 lines
13 KiB
Python
396 lines
13 KiB
Python
# -*- coding: utf-8 -*-
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"""
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数据库状态
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"""
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from datetime import datetime, timedelta
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from random import choices
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from dataclasses import asdict
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from pydantic_ai import ModelMessage, ModelMessagesTypeAdapter, RunUsage
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from pydantic_ai._uuid import uuid7
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import reflex as rx
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from sqlmodel import Field, JSON, SQLModel, select, update
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from application.states.models import (
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Conversation,
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Message,
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MessageType,
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Workflow,
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usage_dump_json,
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usage_validate_json,
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workflow_dump_json,
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workflow_validate_json,
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)
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class CaptchaRecord(SQLModel, table=True):
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"""
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验证码记录
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"""
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email: str = Field(..., primary_key=True, description="邮箱")
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code: str = Field(
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default_factory=lambda: "".join(choices("0123456789", k=6)),
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primary_key=True,
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description="验证码",
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)
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is_valid: bool = Field(
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default=True,
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index=True,
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description="验证码有效：True 表示有效，False 表示无效",
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)
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is_verified: bool = Field(
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default=False,
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index=True,
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description="验证码已核验：True 表示已核验，False 表示未核验",
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)
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expired_at: datetime = Field(
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default_factory=lambda: datetime.now() + timedelta(minutes=30),
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primary_key=True,
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description="过期时间",
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)
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class UserRecord(SQLModel, table=True):
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"""
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用户记录
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"""
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id: str = Field(
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default_factory=lambda: str(uuid7()),
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primary_key=True,
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description="用户唯一标识",
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)
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email: str = Field(..., index=True, description="邮箱")
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class ConversationRecord(SQLModel, table=True):
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"""
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会话记录
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"""
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id: str = Field(
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default_factory=lambda: str(uuid7()),
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primary_key=True,
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description="会话唯一标识",
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)
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user_id: str = Field(..., index=True, description="用户唯一标识")
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description: str = Field(default="新会话", description="会话描述")
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created_at: datetime = Field(
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default_factory=datetime.now, description="会话创建时间"
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)
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is_deleted: bool = Field(
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default=False,
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index=True,
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description="会话已删除：True 表示已删除，False 表示未删除",
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)
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usage: str = Field(default="", description="会话使用量")
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workflow: str = Field(
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default="",
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description="会话工作流",
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) # 原则上嵌套列表或字典若不涉及查询则以字符串储存
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class RunRecord(SQLModel, table=True):
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"""
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运行记录
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"""
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id: str = Field(
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default_factory=lambda: str(uuid7()),
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primary_key=True,
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description="运行唯一标识",
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)
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conversation_id: str = Field(..., index=True, description="会话唯一标识")
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new_messages: str = Field(default="", sa_type=JSON, description="新增消息")
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class MessageRecord(SQLModel, table=True):
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"""
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消息记录
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"""
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id: str = Field(
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default_factory=lambda: str(uuid7()),
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primary_key=True,
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description="消息唯一标识",
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)
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conversation_id: str = Field(..., index=True, description="会话唯一标识")
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type: MessageType = Field(..., description="消息类型")
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title: str = Field(default="", description="消息标题")
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content: str = Field(default="", description="消息内容")
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class DatabaseState(rx.State):
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"""
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数据库状态
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"""
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async def create_captcha_record(self, email: str) -> str:
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"""
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创建验证记录
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:param email: 邮箱
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:return: 验证码
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"""
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async with rx.asession() as session:
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# 先将该邮箱有效、未核验的验证码记录设置为无效
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await session.exec(
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update(CaptchaRecord)
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.where(
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CaptchaRecord.email == email, # type: ignore
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CaptchaRecord.is_valid == True, # type: ignore
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CaptchaRecord.is_verified == False, # type: ignore
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)
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.values(is_valid=False)
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)
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await session.flush()
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# 创建验证记录
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record = CaptchaRecord(
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email=email,
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)
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session.add(record)
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await session.commit()
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await session.refresh(record)
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return record.code
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async def verify_captcha_code(self, email: str, captcha_code: str) -> bool:
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"""
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核验验证码
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:param email: 邮箱
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:param code: 验证码
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:return: 核验是否成功，True 表示核验成功，False 表示核验失败
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"""
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async with rx.asession() as session:
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result = await session.exec(
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select(CaptchaRecord).where(
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CaptchaRecord.email == email,
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CaptchaRecord.code == captcha_code,
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CaptchaRecord.is_valid == True,
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CaptchaRecord.is_verified == False,
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CaptchaRecord.expired_at > datetime.now(),
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)
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)
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record = result.first()
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if not record:
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return False
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record.is_verified = True
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await session.commit()
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await session.refresh(record)
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return True
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async def create_user_record(self, email: str) -> str:
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"""
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创建用户记录
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:param email: 邮箱
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:return: 用户唯一标识
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"""
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async with rx.asession() as session:
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result = await session.exec(
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select(UserRecord).where(UserRecord.email == email)
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)
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record = result.first()
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# 若用户记录已存在则返回用户唯一标识，否则先创建用户记录再返回用户唯一标识
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if record:
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return record.id
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record = UserRecord(email=email)
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session.add(record)
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await session.commit()
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await session.refresh(record)
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return record.id
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async def get_conversations(self, user_id: str) -> dict[str, Conversation]:
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"""
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获取当前用户的会话字典
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:param user_id: 用户唯一标识
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:return: 当前用户的会话字典
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"""
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conversations: dict[str, Conversation] = {}
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async with rx.asession() as session:
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result = await session.exec(
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select(ConversationRecord, MessageRecord)
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.outerjoin(MessageRecord, MessageRecord.conversation_id == ConversationRecord.id) # type: ignore
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.where(
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ConversationRecord.user_id == user_id,
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ConversationRecord.is_deleted == False,
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)
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.order_by(ConversationRecord.id, MessageRecord.id)
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)
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for (
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conversation_record,
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message_record,
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) in result.all():
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conversation = conversations.setdefault(
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conversation_record.id,
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Conversation(
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id=conversation_record.id,
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description=conversation_record.description,
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usage=usage_validate_json(
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conversation_record.usage
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), # 将 conversation_record.usage 由 JSON 字符串反序列化为 RunUsage
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created_at=conversation_record.created_at,
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workflow=workflow_validate_json(
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conversation_record.workflow
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), # 将 conversation_record.workflow 由 JSON 字符串反序列化为 Workflow,
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),
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)
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if not message_record:
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continue
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conversation.messages.setdefault(
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message_record.id,
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Message(
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id=message_record.id,
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type=message_record.type,
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title=message_record.title,
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content=message_record.content,
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),
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)
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return conversations
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async def create_conversation_record(self, user_id: str) -> dict[str, Conversation]:
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"""
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创建会话记录
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:param user_id: 用户唯一标识
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:return: 会话实例
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"""
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async with rx.asession() as session:
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record = ConversationRecord(user_id=user_id)
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session.add(record)
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await session.commit()
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await session.refresh(record)
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return {
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record.id: Conversation(
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id=record.id,
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description=record.description,
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usage=usage_validate_json(
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record.usage
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), # 将 record.usage 由 JSON 字符串反序列化为 RunUsage
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messages={}, # 新会话默认消息字典为空
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created_at=record.created_at,
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)
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}
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async def update_conversation_record(
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self,
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conversation_id: str,
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description: str | None = None,
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is_deleted: bool | None = None,
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usage: RunUsage | None = None,
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workflow: Workflow | None = None,
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) -> None:
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"""
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更新会话记录
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:param conversation_id: 指定会话唯一标识
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:param description: 会话描述
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:param is_deleted: 会话已删除
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:param usage: 使用量
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:param workflow: 工作流
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:return: None
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"""
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async with rx.asession() as session:
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record = await session.get(ConversationRecord, conversation_id)
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if not record:
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return
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if isinstance(description, str):
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record.description = description
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if isinstance(is_deleted, bool):
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record.is_deleted = is_deleted
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if isinstance(usage, RunUsage):
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record.usage = usage_dump_json(
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RunUsage(**asdict(usage))
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) # 将 RunUsage 序列化为 JSON 字符串
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if isinstance(workflow, Workflow):
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record.workflow = workflow_dump_json(
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Workflow(**workflow.model_dump(mode="json"))
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) # 将 Workflow 序列化为 JSON 字符串（因 workflow 基于 pydantic 建模，故使用 model_dump 方法转为字典）
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await session.commit()
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async def create_message_record(
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self,
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conversation_id: str,
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message: Message,
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) -> dict[str, Message]:
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"""
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创建消息记录
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:param conversation_id: 会话唯一标识
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:param message: 消息实例
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:return: 消息实例
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"""
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async with rx.asession() as session:
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record = MessageRecord(
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id=message.id,
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conversation_id=conversation_id,
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type=message.type,
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title=message.title,
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content=message.content,
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)
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session.add(record)
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await session.commit()
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await session.refresh(record)
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return {message.id: message}
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async def create_message_records(
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self,
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conversation_id: str,
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messages: list[Message],
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) -> None:
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"""
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创建消息记录
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:param conversation_id: 会话唯一标识
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:param message: 消息实例
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:return: 消息实例
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"""
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async with rx.asession() as session:
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for message in messages:
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record = MessageRecord(
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id=message.id,
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conversation_id=conversation_id,
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type=message.type,
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title=message.title,
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content=message.content,
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)
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session.add(record)
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await session.commit()
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async def get_message_history(self, conversation_id: str) -> list[ModelMessage]:
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"""
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获取消息历史列表
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:param conversation_id: 会话唯一标识
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:return: 消息历史
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"""
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message_history: list[ModelMessage] = []
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async with rx.asession() as session:
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result = await session.exec(
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select(RunRecord)
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.where(RunRecord.conversation_id == conversation_id)
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.order_by(RunRecord.id)
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)
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for run in result.all():
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message_history.extend(
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ModelMessagesTypeAdapter.validate_json(
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run.new_messages
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) # 将 run.new_messages 由 JSON 字符串反序列化为 List[ModelMessage]
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)
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return message_history
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async def create_run_record(
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self,
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conversation_id: str,
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new_messages: list[ModelMessage],
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) -> None:
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"""
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创建运行记录
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:param conversation_id: 会话唯一标识
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:param new_messages: 新增消息
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:return: None
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"""
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async with rx.asession() as session:
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session.add(
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RunRecord(
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conversation_id=conversation_id,
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new_messages=ModelMessagesTypeAdapter.dump_json(
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new_messages
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).decode("utf-8"),
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# 将 messages 由 List[ModelMessage] 序列化为 JSON 字符串
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)
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)
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await session.commit()
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