94 lines
4.0 KiB
Python
94 lines
4.0 KiB
Python
from backend import db
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from datetime import datetime, timezone
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from flask import current_app
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from sqlalchemy import Text
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from sqlalchemy.dialects.mysql import LONGTEXT as MYSQL_LONGTEXT
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def get_longtext_type():
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"""Get appropriate text type for long content based on database dialect."""
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db_uri = current_app.config.get("SQLALCHEMY_DATABASE_URI", "")
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if db_uri.startswith("mysql"):
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return MYSQL_LONGTEXT
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return Text # SQLite and PostgreSQL use Text
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# For model definitions, we'll use a callable that returns the right type
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class LongText(db.TypeDecorator):
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"""Cross-database LONGTEXT type that works with MySQL, SQLite, and PostgreSQL."""
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impl = Text
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cache_ok = True
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def load_dialect_impl(self, dialect):
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if dialect.name == "mysql":
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return dialect.type_descriptor(MYSQL_LONGTEXT)
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return dialect.type_descriptor(Text)
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class User(db.Model):
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__tablename__ = "users"
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id = db.Column(db.Integer, primary_key=True, autoincrement=True)
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username = db.Column(db.String(50), unique=True, nullable=False)
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password = db.Column(db.String(255), nullable=True) # Allow NULL for third-party login
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phone = db.Column(db.String(20))
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conversations = db.relationship("Conversation", backref="user", lazy="dynamic",
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cascade="all, delete-orphan",
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order_by="Conversation.updated_at.desc()")
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class Conversation(db.Model):
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__tablename__ = "conversations"
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id = db.Column(db.String(64), primary_key=True)
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user_id = db.Column(db.Integer, db.ForeignKey("users.id"), nullable=False, index=True)
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title = db.Column(db.String(255), nullable=False, default="")
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model = db.Column(db.String(64), nullable=False, default="glm-5")
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system_prompt = db.Column(db.Text, default="")
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temperature = db.Column(db.Float, nullable=False, default=1.0)
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max_tokens = db.Column(db.Integer, nullable=False, default=65536)
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thinking_enabled = db.Column(db.Boolean, default=False)
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created_at = db.Column(db.DateTime, default=lambda: datetime.now(timezone.utc))
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updated_at = db.Column(db.DateTime, default=lambda: datetime.now(timezone.utc),
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onupdate=lambda: datetime.now(timezone.utc), index=True)
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messages = db.relationship("Message", backref="conversation", lazy="dynamic",
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cascade="all, delete-orphan",
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order_by="Message.created_at.asc()")
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class Message(db.Model):
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__tablename__ = "messages"
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id = db.Column(db.String(64), primary_key=True)
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conversation_id = db.Column(db.String(64), db.ForeignKey("conversations.id"),
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nullable=False, index=True)
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role = db.Column(db.String(16), nullable=False) # user, assistant, system, tool
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# Unified JSON structure:
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# User: {"text": "...", "attachments": [{"name": "a.py", "extension": "py", "content": "..."}]}
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# Assistant: {"text": "...", "thinking": "...", "tool_calls": [{"id": "...", "name": "...", "arguments": "...", "result": "..."}]}
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content = db.Column(LongText, default="")
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token_count = db.Column(db.Integer, default=0)
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created_at = db.Column(db.DateTime, default=lambda: datetime.now(timezone.utc), index=True)
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class TokenUsage(db.Model):
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__tablename__ = "token_usage"
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id = db.Column(db.Integer, primary_key=True, autoincrement=True)
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user_id = db.Column(db.Integer, db.ForeignKey("users.id"),
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nullable=False, index=True)
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date = db.Column(db.Date, nullable=False, index=True)
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model = db.Column(db.String(64), nullable=False)
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prompt_tokens = db.Column(db.Integer, default=0)
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completion_tokens = db.Column(db.Integer, default=0)
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total_tokens = db.Column(db.Integer, default=0)
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created_at = db.Column(db.DateTime, default=lambda: datetime.now(timezone.utc))
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__table_args__ = (
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db.UniqueConstraint("user_id", "date", "model", name="uq_user_date_model"),
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db.Index("ix_token_usage_date_model", "date", "model"), # Composite index
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)
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