feat: channels backend

backend/open_webui/models/messages.py

@@ -0,0 +1,139 @@
+import json
+import time
+import uuid
+from typing import Optional
+
+from open_webui.internal.db import Base, get_db
+from open_webui.models.tags import TagModel, Tag, Tags
+
+
+from pydantic import BaseModel, ConfigDict
+from sqlalchemy import BigInteger, Boolean, Column, String, Text, JSON
+from sqlalchemy import or_, func, select, and_, text
+from sqlalchemy.sql import exists
+
+####################
+# Message DB Schema
+####################
+
+
+class Message(Base):
+    __tablename__ = "message"
+    id = Column(Text, primary_key=True)
+
+    user_id = Column(Text)
+    channel_id = Column(Text, nullable=True)
+
+    content = Column(Text)
+    data = Column(JSON, nullable=True)
+    meta = Column(JSON, nullable=True)
+
+    created_at = Column(BigInteger)
+    updated_at = Column(BigInteger)
+
+
+class MessageModel(BaseModel):
+    model_config = ConfigDict(from_attributes=True)
+
+    id: str
+    user_id: str
+    channel_id: Optional[str] = None
+
+    content: str
+    data: Optional[dict] = None
+    meta: Optional[dict] = None
+
+    created_at: int  # timestamp in epoch
+    updated_at: int  # timestamp in epoch
+
+
+####################
+# Forms
+####################
+
+
+class MessageForm(BaseModel):
+    content: str
+    data: Optional[dict] = None
+    meta: Optional[dict] = None
+
+
+class MessageTable:
+    def insert_new_message(
+        self, form_data: MessageForm, channel_id: str, user_id: str
+    ) -> Optional[MessageModel]:
+        with get_db() as db:
+            id = str(uuid.uuid4())
+            message = MessageModel(
+                **{
+                    "id": id,
+                    "user_id": user_id,
+                    "channel_id": channel_id,
+                    "content": form_data.content,
+                    "data": form_data.data,
+                    "meta": form_data.meta,
+                    "created_at": int(time.time()),
+                    "updated_at": int(time.time()),
+                }
+            )
+
+            result = Message(**message.model_dump())
+            db.add(result)
+            db.commit()
+            db.refresh(result)
+            return MessageModel.model_validate(result) if result else None
+
+    def get_message_by_id(self, id: str) -> Optional[MessageModel]:
+        with get_db() as db:
+            message = db.get(Message, id)
+            return MessageModel.model_validate(message) if message else None
+
+    def get_messages_by_channel_id(
+        self, channel_id: str, skip: int = 0, limit: int = 50
+    ) -> list[MessageModel]:
+        with get_db() as db:
+            all_messages = (
+                db.query(Message)
+                .filter_by(channel_id=channel_id)
+                .order_by(Message.updated_at.desc())
+                .limit(limit)
+                .offset(skip)
+                .all()
+            )
+            return [MessageModel.model_validate(message) for message in all_messages]
+
+    def get_messages_by_user_id(
+        self, user_id: str, skip: int = 0, limit: int = 50
+    ) -> list[MessageModel]:
+        with get_db() as db:
+            all_messages = (
+                db.query(Message)
+                .filter_by(user_id=user_id)
+                .order_by(Message.updated_at.desc())
+                .limit(limit)
+                .offset(skip)
+                .all()
+            )
+            return [MessageModel.model_validate(message) for message in all_messages]
+
+    def update_message_by_id(
+        self, id: str, form_data: MessageForm
+    ) -> Optional[MessageModel]:
+        with get_db() as db:
+            message = db.get(Message, id)
+            message.content = form_data.content
+            message.data = form_data.data
+            message.meta = form_data.meta
+            message.updated_at = int(time.time())
+            db.commit()
+            db.refresh(message)
+            return MessageModel.model_validate(message) if message else None
+
+    def delete_message_by_id(self, id: str) -> bool:
+        with get_db() as db:
+            db.query(Message).filter_by(id=id).delete()
+            db.commit()
+            return True
+
+
+Messages = MessageTable()