inbox/resolvers/messages.py

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import json
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import logging
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import time
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from models.chat import Message
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from services.auth import login_required
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from services.presence import notify_message
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from services.rediscache import redis
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from services.schema import mutation
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logger = logging.getLogger("[resolvers.messages] ")
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logger.setLevel(logging.DEBUG)
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@mutation.field("create_message")
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@login_required
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async def create_message(_, info, chat_id: str, body: str, reply_to=None):
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"""Создание сообщения с телом :body для чата :chat_id с возможным ответом на :reply_to"""
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author_id = info.context["author_id"]
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# Получение данных чата из Redis
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chat_data = await redis.execute("GET", f"chats/{chat_id}")
logger.debug(f"chat data: {chat_data}")
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# Если данных чата нет, возвращаем ошибку
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if not chat_data:
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return {"error": "chat is not exist"}
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elif isinstance(chat_data, str):
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# Преобразование данных чата из строки JSON в словарь
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chat_dict = json.loads(chat_data)
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chat_id = chat_dict["id"]
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# Получение ID следующего сообщения
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message_id = await redis.execute(
"GET", f"chats/{chat_dict['id']}/next_message_id"
)
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if isinstance(message_id, str) or isinstance(message_id, int):
message_id = int(message_id) if message_id else 0
# Создание нового сообщения
new_message: Message = {
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"chat_id": chat_id,
"id": message_id,
"created_by": author_id,
"body": body,
"created_at": int(time.time()),
"updated_at": None,
"reply_to": None,
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}
# Если есть ответ, добавляем его в сообщение
if reply_to:
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new_message["reply_to"] = reply_to
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# Обновление времени последнего обновления чата
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chat_dict["updated_at"] = new_message["created_at"]
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# Запись обновленных данных чата обратно в Redis
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await redis.execute("SET", f"chats/{chat_id}", json.dumps(chat_dict))
logger.debug(f"creating message {new_message}")
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# Запись нового сообщения в Redis
await redis.execute(
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"SET",
f"chats/{chat_id}/messages/{message_id}",
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json.dumps(new_message),
)
# Добавление ID нового сообщения в список ID сообщений чата
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await redis.execute(
"LPUSH", f"chats/{chat_id}/message_ids", str(message_id)
)
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# Обновление ID следующего сообщения
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await redis.execute(
"SET", f"chats/{chat_id}/next_message_id", str(message_id + 1)
)
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# Добавление нового сообщения в список непрочитанных сообщений для каждого участника чата
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members = chat_dict["members"]
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for member_id in members:
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await redis.execute(
"LPUSH",
f"chats/{chat_dict['id']}/unread/{member_id}",
str(message_id),
)
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# Отправка уведомления о новом сообщении
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new_message["chat_id"] = chat_id
await notify_message(new_message, "create")
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return {"message": new_message, "error": None}
return {"error": "cannot create message"}
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@mutation.field("update_message")
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@login_required
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async def update_message(_, info, message):
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author_id = info.context["author_id"]
chat_id = message.get("chat_id")
chat_str = ""
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if chat_id:
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chat_str = await redis.execute("GET", f"chats/{chat_id}")
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if not chat_str:
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return {"error": "chat not exist"}
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message_id = message.get("id")
body = message.get("body")
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if message_id:
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message = await redis.execute("GET", f"chats/{chat_id}/messages/{message_id}")
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if isinstance(message, str):
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message = json.loads(message)
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if message["created_by"] != author_id:
return {"error": "access denied"}
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if body:
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message["body"] = body
message["updated_at"] = int(time.time())
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await redis.execute(
"SET", f"chats/{chat_id}/messages/{message_id}", json.dumps(message)
)
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# Отправка уведомления
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message["chat_id"] = chat_id
await notify_message(message, "update")
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return {"message": message, "error": None}
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return {"message": message, "error": "cannot update"}
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@mutation.field("delete_message")
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@login_required
async def delete_message(_, info, chat_id: str, message_id: int):
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author_id = info.context["author_id"]
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chat_str = await redis.execute("GET", f"chats/{chat_id}")
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if isinstance(chat_str, str):
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chat = json.loads(chat_str)
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message_data = await redis.execute(
"GET", f"chats/{chat_id}/messages/{str(message_id)}"
)
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if isinstance(message_data, str):
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message: Message = json.loads(message_data)
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if message["created_by"] != author_id:
return {"error": "access denied"}
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await redis.execute(
"LREM", f"chats/{chat_id}/message_ids", 0, str(message_id)
)
await redis.execute("DEL", f"chats/{chat_id}/messages/{str(message_id)}")
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members = chat["members"]
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for member_id in members:
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await redis.execute(
"LREM", f"chats/{chat_id}/unread/{member_id}", 0, str(message_id)
)
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message["chat_id"] = chat_id
await notify_message(message, "delete")
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return {}
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@mutation.field("mark_as_read")
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@login_required
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async def mark_as_read(_, info, chat_id: str, message_id: int):
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author_id = info.context["author_id"]
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chat_str = await redis.execute("GET", f"chats/{chat_id}")
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if isinstance(chat_str, str):
chat = json.loads(chat_str)
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members = set(chat["members"])
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if author_id not in members:
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return {"error": "access denied"}
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await redis.execute(
"LREM", f"chats/{chat_id}/unread/{author_id}", 0, str(message_id)
)
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message_data = await redis.execute(
"GET", f"chats/{chat_id}/messages/{str(message_id)}"
)
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if isinstance(message_data, str):
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message: Message = json.loads(message_data)
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await notify_message(message, "seen")
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return {"error": None}