Add edit message

backend/app/chats/dao.py

@@ -77,7 +77,7 @@ class MessageDAO(BaseDAO[MessageModel, MessageCreateDB, MessageUpdateDB]):
     model = MessageModel
 
     @classmethod
-    async def find_all_asc(
+    async def find_all_desc(
             cls,
             session: AsyncSession,
             offset: Optional[int],
@@ -85,7 +85,7 @@ class MessageDAO(BaseDAO[MessageModel, MessageCreateDB, MessageUpdateDB]):
             *filter,
             **filter_by
     ) -> List[MessageModel]:
-        stmt = select(MessageModel).filter(*filter).filter_by(**filter_by).order_by(MessageModel.created_at.asc())
+        stmt = select(MessageModel).filter(*filter).filter_by(**filter_by).order_by(MessageModel.created_at.desc())
 
         if offset is not None:
             stmt = stmt.offset(offset)

backend/app/chats/models.py

@@ -1,7 +1,7 @@
 import uuid
 
 from sqlalchemy.orm import Mapped, mapped_column
-from sqlalchemy import ForeignKey, UUID, UniqueConstraint
+from sqlalchemy import ForeignKey, UUID, UniqueConstraint, text
 
 from app.core.database import Base
 
@@ -14,6 +14,7 @@ class MessageModel(Base):
     chat_id: Mapped[uuid.UUID] = mapped_column(UUID, ForeignKey("chat.id", ondelete="CASCADE"), index=True)
     content: Mapped[str] = mapped_column()
     is_read: Mapped[bool] = mapped_column(default=False)
+    is_edited: Mapped[bool] = mapped_column(default=False, server_default=text("false"))
 
 
 class ChatModel(Base):

backend/app/chats/router.py

@@ -6,7 +6,7 @@ from fastapi import APIRouter, Depends, WebSocket, WebSocketDisconnect
 from app.chats.service import ChatService
 from app.auth.dependencies import get_current_verified_user
 from app.users.models import UserModel
-from app.chats.schemas import Chat, MessageCreate, Message
+from app.chats.schemas import Chat, MessageCreate, Message, MessageUpdate
 
 router = APIRouter(prefix="/chats", tags=["chats"])
 
@@ -19,7 +19,7 @@ async def get_chats(
     return await ChatService.get_chats(user, offset, limit)
 
 @router.get("/{chat_id}")
-async def get_chat(
+async def get_messages(
         chat_id: uuid.UUID,
         offset: int = 0,
         limit: int = 10,
@@ -31,6 +31,10 @@ async def get_chat(
 async def send_message(message: MessageCreate, user: UserModel = Depends(get_current_verified_user)) -> Message:
     return await ChatService.send_message(user, message)
 
+@router.put("/message")
+async def edit_message(message_update: MessageUpdate, user: UserModel = Depends(get_current_verified_user)) -> Message:
+    return await ChatService.update_message(user, message_update)
+
 
 @router.websocket("/ws")
 async def websocket_endpoint(ws: WebSocket, user: UserModel = Depends(get_current_verified_user)):

backend/app/chats/schemas.py

@@ -2,7 +2,7 @@ from datetime import datetime
 from typing import Optional
 import uuid
 
-from pydantic import BaseModel
+from pydantic import BaseModel, ConfigDict
 
 
 class MessageCreate(BaseModel):
@@ -21,10 +21,13 @@ class MessageCreateDB(BaseModel):
     chat_id: Optional[uuid.UUID]
     content: Optional[str]
     is_read: Optional[bool] = False
+    is_edited: Optional[bool] = False
 
 
 class MessageUpdateDB(BaseModel):
     content: Optional[str]
+    is_edited: Optional[bool] = False
+
 
 
 class Message(BaseModel):
@@ -32,9 +35,12 @@ class Message(BaseModel):
     sender_id: int
     chat_id: uuid.UUID
     content: str
+    is_edited: Optional[bool] = False
     created_at: datetime
     updated_at: datetime
 
+    model_config = ConfigDict(from_attributes=True)
+
 
 class ChatBase(BaseModel):
     is_group: Optional[bool] = False

backend/app/chats/service.py

@@ -9,7 +9,7 @@ from sqlalchemy import and_
 from app.core.database import async_session_maker
 from app.chats.dao import ChatDAO, MessageDAO, ParticipantDAO
 from app.chats.models import ChatModel, MessageModel, ParticipantModel
-from app.chats.schemas import Chat, MessageCreate, MessageCreateDB, ChatCreateDB, ParticipantCreateDB, Message
+from app.chats.schemas import Chat, MessageCreate, MessageCreateDB, ChatCreateDB, ParticipantCreateDB, Message, MessageUpdateDB, MessageUpdate
 from app.users.models import UserModel
 from app.core.redis import get_redis
 
@@ -92,14 +92,7 @@ class ChatService:
                 )
             )
 
-            await cls._send_ws_message(members_ids, Message(
-                id=message_db.id,
-                sender_id=message_db.sender_id,
-                chat_id=message_db.chat_id,
-                content=message_db.content,
-                created_at=message_db.created_at,
-                updated_at=message_db.updated_at
-            ))
+            await cls._send_ws_message(members_ids, Message.model_validate(message_db))
 
             await ChatDAO.update(
                 session,
@@ -124,7 +117,7 @@ class ChatService:
                 log.warning("Access denied to chat", extra={"user_id": user.id, "chat_id": chat_id})
                 raise HTTPException(status.HTTP_403_FORBIDDEN, detail="Access denied")
 
-            messages = await MessageDAO.find_all_asc(
+            messages = await MessageDAO.find_all_desc(
                 session,
                 offset,
                 limit,
@@ -180,4 +173,45 @@ class ChatService:
                 "message": message.model_dump(mode='json')
             }
             await redis_client.publish("messenger_updates", json.dumps(payload))
-            log.debug(f"Published message for user_id: {user_id}")
+            log.debug(f"Published message for user_id: {user_id}")
+
+
+    @classmethod
+    async def update_message(cls, user: UserModel, message_update: MessageUpdate) -> Message:
+        async with async_session_maker() as session:
+            message_exist = await MessageDAO.find_one_or_none(
+                session,
+                and_(
+                    MessageModel.id==message_update.id,
+                    MessageModel.sender_id==user.id
+                )
+            )
+
+            if message_exist is None:
+                log.warning("Message not found", extra={"user_id": user.id, "message_id": message_update.id})
+                raise HTTPException(status.HTTP_404_NOT_FOUND, detail="Message not found")
+
+
+            message_update_db = await MessageDAO.update(
+                session,
+                MessageModel.id==message_update.id,
+                obj_in=MessageUpdateDB(
+                    content=message_update.content,
+                    is_edited=True
+                )
+            )
+
+            members = await ParticipantDAO.find_all(
+                session,
+                None,
+                None,
+                ParticipantModel.chat_id==message_exist.chat_id
+            )
+
+            member_ids = [member.user_id for member in members]
+
+            await cls._send_ws_message(member_ids, Message.model_validate(message_update_db))
+
+            await session.commit()
+            log.info("Message update successfully", extra={"user_id": user.id, "message_id": message_update.id})
+            return message_update_db

backend/app/migration/versions/76159faa56c8_edit_message_table_adding_is_edited_.py

@@ -0,0 +1,32 @@
+"""Edit message table: adding is_edited column
+
+Revision ID: 76159faa56c8
+Revises: 0d3f7039ba77
+Create Date: 2026-01-20 17:22:23.965106
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '76159faa56c8'
+down_revision: Union[str, Sequence[str], None] = '0d3f7039ba77'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('message', sa.Column('is_edited', sa.Boolean(), nullable=False, server_default=sa.text("false")))
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('message', 'is_edited')
+    # ### end Alembic commands ###