upgrade

resolvers/inbox/chats.py

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+import json
+import uuid
+from datetime import datetime
+
+from auth.authenticate import login_required
+from base.redis import redis
+from base.resolvers import mutation, query
+from resolvers.inbox.messages import load_messages
+
+
+async def get_unread_counter(chat_id: str, user_slug: str):
+    try:
+        return int(await redis.execute("LLEN", f"chats/{chat_id}/unread/{user_slug}"))
+    except Exception:
+        return 0
+
+
+async def get_total_unread_counter(user_slug: str):
+    chats = await redis.execute("GET", f"chats_by_user/{user_slug}")
+    if not chats:
+        return 0
+
+    chats = json.loads(chats)
+    unread = 0
+    for chat_id in chats:
+        n = await get_unread_counter(chat_id, user_slug)
+        unread += n
+
+    return unread
+
+
+async def add_user_to_chat(user_slug: str, chat_id: str, chat=None):
+    for member in chat["users"]:
+        chats_ids = await redis.execute("GET", f"chats_by_user/{member}")
+        if chats_ids:
+            chats_ids = list(json.loads(chats_ids))
+        else:
+            chats_ids = []
+        if chat_id not in chats_ids:
+            chats_ids.append(chat_id)
+        await redis.execute("SET", f"chats_by_user/{member}", json.dumps(chats_ids))
+
+
+async def get_chats_by_user(slug: str):
+    chats = await redis.execute("GET", f"chats_by_user/{slug}")
+    if chats:
+        chats = list(json.loads(chats))
+    return chats or []
+
+
+async def load_user_chats(slug, offset: int, amount: int):
+    """ load :amount chats of :slug user with :offset """
+    chats = await get_chats_by_user(slug)[offset:offset + amount]
+    if not chats:
+        chats = []
+    for c in chats:
+        c['messages'] = await load_messages(c['id'])
+        c['unread'] = await get_unread_counter(c['id'], slug)
+    return {
+        "chats": chats,
+        "error": None
+    }
+
+
+@query.field("loadChats")
+@login_required
+async def load_chats(_, info):
+    user = info.context["request"].user
+    return await load_user_chats(user.slug)
+
+
+@mutation.field("enterChat")
+@login_required
+async def enter_chat(_, info, chat_id: str):
+    ''' enter to public chat with :chat_id '''
+    user = info.context["request"].user
+    chat = await redis.execute("GET", f"chats/{chat_id}")
+    if not chat:
+        return {
+            "error": "chat not exist"
+        }
+    else:
+        chat = dict(json.loads(chat))
+        if chat['private']:
+            return {
+                "error": "cannot enter private chat"
+            }
+        if user.slug not in chat["users"]:
+            chat["users"].append(user.slug)
+            await add_user_to_chat(user.slug, chat_id, chat)
+            await redis.execute("SET" f"chats/{chat_id}", json.dumps(chat))
+        chat['messages'] = await load_messages(chat_id)
+        return {
+            "chat": chat,
+            "error": None
+        }
+
+
+@mutation.field("inviteChat")
+async def invite_to_chat(_, info, invited: str, chat_id: str):
+    ''' invite user with :slug to chat with :chat_id '''
+    user = info.context["request"].user
+    chat = await redis.execute("GET", f"chats/{chat_id}")
+    if not chat:
+        return {
+            "error": "chat not exist"
+        }
+    chat = dict(json.loads(chat))
+    if not chat['private'] and user.slug not in chat['admins']:
+        return {
+            "error": "only admins can invite to private chat",
+            "chat": chat
+        }
+    else:
+        chat["users"].append(invited)
+        await add_user_to_chat(user.slug, chat_id, chat)
+        await redis.execute("SET", f"chats/{chat_id}", json.dumps(chat))
+        return {
+            "error": None,
+            "chat": chat
+        }
+
+
+@mutation.field("updateChat")
+@login_required
+async def update_chat(_, info, chat_new: dict):
+    """
+    updating chat
+    requires info["request"].user.slug to be in chat["admins"]
+
+    :param info: GraphQLInfo with request
+    :param chat_new: dict with chat data
+    :return: Result { error chat }
+    """
+    user = info.context["request"].user
+    chat_id = chat_new["id"]
+    chat = await redis.execute("GET", f"chats/{chat_id}")
+    if not chat:
+        return {
+            "error": "chat not exist"
+        }
+    chat = dict(json.loads(chat))
+    if user.slug in chat["admins"]:
+        chat.update({
+            "title": chat_new.get("title", chat["title"]),
+            "description": chat_new.get("description", chat["description"]),
+            "updatedAt": int(datetime.now().timestamp()),
+            "admins": chat_new.get("admins", chat["admins"]),
+            "users": chat_new.get("users", chat["users"])
+        })
+    await add_user_to_chat(user.slug, chat_id, chat)
+    await redis.execute("SET", f"chats/{chat.id}", json.dumps(chat))
+    await redis.execute("SET", f"chats/{chat.id}/next_message_id", 0)
+
+    return {
+        "error": None,
+        "chat": chat
+    }
+
+
+@mutation.field("createChat")
+@login_required
+async def create_chat(_, info, title="", members=[]):
+    user = info.context["request"].user
+    chat_id = str(uuid.uuid4())
+    if user.slug not in members:
+        members.append(user.slug)
+    chat = {
+        "title": title,
+        "createdAt": int(datetime.now().timestamp()),
+        "updatedAt": int(datetime.now().timestamp()),
+        "createdBy": user.slug,
+        "id": chat_id,
+        "users": members,
+        "admins": [user.slug, ]
+    }
+
+    await add_user_to_chat(user.slug, chat_id, chat)
+    await redis.execute("SET", f"chats/{chat_id}", json.dumps(chat))
+    await redis.execute("SET", f"chats/{chat_id}/next_message_id", str(0))
+
+    return {
+        "error": None,
+        "chat": chat
+    }
+
+
+@mutation.field("deleteChat")
+@login_required
+async def delete_chat(_, info, chat_id: str):
+    user = info.context["request"].user
+    chat = await redis.execute("GET", f"/chats/{chat_id}")
+    if chat:
+        chat = dict(json.loads(chat))
+        if user.slug in chat['admins']:
+            await redis.execute("DEL", f"chats/{chat_id}")
+    else:
+        return {
+            "error": "chat not exist"
+        }

resolvers/inbox/messages.py

@@ -0,0 +1,193 @@
+import asyncio
+import json
+from datetime import datetime
+
+from auth.authenticate import login_required
+from base.redis import redis
+from base.resolvers import mutation, query, subscription
+from services.inbox import ChatFollowing, MessageResult, MessagesStorage
+from resolvers.inbox.chats import get_chats_by_user
+
+
+async def load_messages(chatId: str, offset: int, amount: int):
+    ''' load :amount messages for :chatId with :offset '''
+    messages = []
+    message_ids = await redis.lrange(
+        f"chats/{chatId}/message_ids", 0 - offset - amount, 0 - offset
+    )
+    if message_ids:
+        message_keys = [
+            f"chats/{chatId}/messages/{mid}" for mid in message_ids
+        ]
+        messages = await redis.mget(*message_keys)
+        messages = [json.loads(msg) for msg in messages]
+    return {
+        "messages": messages,
+        "error": None
+    }
+
+
+@query.field("loadMessages")
+@login_required
+async def load_chat_messages(_, info, chat_id: str, offset: int = 0, amount: int = 50):
+    ''' load [amount] chat's messages with [offset] '''
+    chat = await redis.execute("GET", f"chats/{chat_id}")
+    if not chat:
+        return {
+            "error": "chat not exist"
+        }
+    messages = await load_messages(chat_id, offset, amount)
+    return {
+        "messages": messages,
+        "error": None
+    }
+
+
+@mutation.field("createMessage")
+@login_required
+async def create_message(_, info, chat_id: str, body: str, replyTo=None):
+    """ create message with :body for :chat_id replying to :replyTo optionally """
+    user = info.context["request"].user
+    chat = await redis.execute("GET", f"chats/{chat_id}")
+    if not chat:
+        return {
+            "error": "chat not exist"
+        }
+    message_id = await redis.execute("GET", f"chats/{chat_id}/next_message_id")
+    message_id = int(message_id)
+    new_message = {
+        "chatId": chat_id,
+        "id": message_id,
+        "author": user.slug,
+        "body": body,
+        "replyTo": replyTo,
+        "createdAt": int(datetime.now().timestamp()),
+    }
+    await redis.execute(
+        "SET", f"chats/{chat_id}/messages/{message_id}", json.dumps(new_message)
+    )
+    await redis.execute("LPUSH", f"chats/{chat_id}/message_ids", str(message_id))
+    await redis.execute("SET", f"chats/{chat_id}/next_message_id", str(message_id + 1))
+
+    chat = json.loads(chat)
+    users = chat["users"]
+    for user_slug in users:
+        await redis.execute(
+            "LPUSH", f"chats/{chat_id}/unread/{user_slug}", str(message_id)
+        )
+
+    result = MessageResult("NEW", new_message)
+    await MessagesStorage.put(result)
+
+    return {
+        "message": new_message,
+        "error": None
+    }
+
+
+@mutation.field("updateMessage")
+@login_required
+async def update_message(_, info, chat_id: str, message_id: int, body: str):
+    user = info.context["request"].user
+
+    chat = await redis.execute("GET", f"chats/{chat_id}")
+    if not chat:
+        return {"error": "chat not exist"}
+
+    message = await redis.execute("GET", f"chats/{chat_id}/messages/{message_id}")
+    if not message:
+        return {"error": "message  not exist"}
+
+    message = json.loads(message)
+    if message["author"] != user.slug:
+        return {"error": "access denied"}
+
+    message["body"] = body
+    message["updatedAt"] = int(datetime.now().timestamp())
+
+    await redis.execute("SET", f"chats/{chat_id}/messages/{message_id}", json.dumps(message))
+
+    result = MessageResult("UPDATED", message)
+    await MessagesStorage.put(result)
+
+    return {
+        "message": message,
+        "error": None
+    }
+
+
+@mutation.field("deleteMessage")
+@login_required
+async def delete_message(_, info, chat_id: str, message_id: int):
+    user = info.context["request"].user
+
+    chat = await redis.execute("GET", f"chats/{chat_id}")
+    if not chat:
+        return {"error": "chat not exist"}
+    chat = json.loads(chat)
+
+    message = await redis.execute("GET", f"chats/{chat_id}/messages/{str(message_id)}")
+    if not message:
+        return {"error": "message  not exist"}
+    message = json.loads(message)
+    if message["author"] != user.slug:
+        return {"error": "access denied"}
+
+    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)}")
+
+    users = chat["users"]
+    for user_slug in users:
+        await redis.execute("LREM", f"chats/{chat_id}/unread/{user_slug}", 0, str(message_id))
+
+    result = MessageResult("DELETED", message)
+    await MessagesStorage.put(result)
+
+    return {}
+
+
+@mutation.field("markAsRead")
+@login_required
+async def mark_as_read(_, info, chat_id: str, messages: [int]):
+    user = info.context["request"].user
+
+    chat = await redis.execute("GET", f"chats/{chat_id}")
+    if not chat:
+        return {"error": "chat not exist"}
+
+    chat = json.loads(chat)
+    users = set(chat["users"])
+    if user.slug not in users:
+        return {"error": "access denied"}
+
+    for message_id in messages:
+        await redis.execute("LREM", f"chats/{chat_id}/unread/{user.slug}", 0, str(message_id))
+
+    return {
+        "error": None
+    }
+
+
+@subscription.source("newMessage")
+@login_required
+async def message_generator(obj, info):
+    try:
+        user = info.context["request"].user
+        user_following_chats = await get_chats_by_user(user.slug)  # chat ids
+        tasks = []
+        updated = {}
+        for chat_id in user_following_chats:
+            chat = await redis.execute("GET", f"chats/{chat_id}")
+            updated[chat_id] = chat['updatedAt']
+        user_following_chats_sorted = sorted(user_following_chats, key=lambda x: updated[x], reverse=True)
+        for chat_id in user_following_chats_sorted:
+            following_chat = ChatFollowing(chat_id)
+            await MessagesStorage.register_chat(following_chat)
+            chat_task = following_chat.queue.get()
+            tasks.append(chat_task)
+
+        while True:
+            msg = await asyncio.gather(*tasks)
+            yield msg
+    finally:
+        await MessagesStorage.remove_chat(following_chat)

resolvers/inbox/search.py

@@ -0,0 +1,77 @@
+import json
+
+from auth.authenticate import login_required
+from base.redis import redis
+from base.resolvers import query, session
+from orm.zine import AuthorFollower
+
+
+@query.field("searchUsers")
+@login_required
+async def search_user(_, info, query: str, offset: int = 0, amount: int = 50):
+    result = []
+    # TODO: maybe redis scan?
+    user = info.context["request"].user
+    talk_before = await redis.execute("GET", f"/chats_by_user/{user.slug}")
+    if talk_before:
+        talk_before = list(json.loads(talk_before))[offset:offset + amount]
+        for chat_id in talk_before:
+            members = await redis.execute("GET", f"/chats/{chat_id}/users")
+            if members:
+                members = list(json.loads(members))
+                for member in members:
+                    if member.startswith(query):
+                        if member not in result:
+                            result.append(member)
+    user = info.context["request"].user
+
+    more_amount = amount - len(result)
+
+    # followings
+    result += session.query(AuthorFollower.author).where(AuthorFollower.follower.startswith(query))\
+        .offset(offset + len(result)).limit(more_amount)
+
+    more_amount = amount
+    # followers
+    result += session.query(AuthorFollower.follower).where(AuthorFollower.author.startswith(query))\
+        .offset(offset + len(result)).limit(offset + len(result) + amount)
+    return {
+        "slugs": list(result),
+        "error": None
+    }
+
+
+@query.field("searchChats")
+@login_required
+async def search_chat(_, info, query: str, offset: int = 0, amount: int = 50):
+    user = info.context["request"].user
+    my_chats = await redis.execute("GET", f"/chats_by_user/{user.slug}")
+    chats = []
+    for chat_id in my_chats:
+        chat = await redis.execute("GET", f"chats/{chat_id}")
+        if chat:
+            chat = dict(json.loads(chat))
+            chats.append(chat)
+    return {
+        "chats": chats,
+        "error": None
+    }
+
+
+@query.field("searchMessages")
+@login_required
+async def search_messages(_, info, query: str, offset: int = 0, amount: int = 50):
+    user = info.context["request"].user
+    my_chats = await redis.execute("GET", f"/chats_by_user/{user.slug}")
+    chats = []
+    if my_chats:
+        my_chats = list(json.loads(my_chats))
+        for chat_id in my_chats:
+            chat = await redis.execute("GET", f"chats/{chat_id}")
+            if chat:
+                chat = dict(json.loads(chat))
+                chats.append(chat)
+    return {
+        "chats": chats,
+        "error": None
+    }