diff --git a/.env b/.env
new file mode 100644
index 0000000..1e2f09a
--- /dev/null
+++ b/.env
@@ -0,0 +1,6 @@
+DISABLE_DOCS=true
+
+MONGO_HOST=127.0.0.1
+MONGO_PORT=27017
+MONGO_USER=user
+MONGO_PASS=pass
\ No newline at end of file
diff --git a/.github/workflows/app-actions.yml b/.github/workflows/app-actions.yml
new file mode 100644
index 0000000..9af1516
--- /dev/null
+++ b/.github/workflows/app-actions.yml
@@ -0,0 +1,67 @@
+name: app-actions
+
+on:
+  workflow_dispatch:
+  push:
+    paths:
+      - '**.py'
+    branches:
+      - main
+      - app
+  pull_request:
+    branches:
+      - main
+
+
+jobs:
+  mypy:
+    runs-on: ubuntu-latest
+    continue-on-error: true
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Setup Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: 3.9
+          architecture: x64
+
+      - name: Install dependencies
+        run: |
+          pip install mypy
+          pip install -r app/requirements.txt
+
+      - name: Run mypy
+        run: mypy --ignore-missing-imports ./app
+
+  pytest:
+    runs-on: ubuntu-latest
+    env:
+      MONGO_HOST: ${{ secrets.MONGO_HOST }}
+      MONGO_PORT: ${{ secrets.MONGO_PORT }}
+      MONGO_USER: ${{ secrets.MONGO_USER }}
+      MONGO_PASS: ${{ secrets.MONGO_PASS }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Setup Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: 3.9
+          architecture: x64
+
+      - name: Setup MongoDB
+        run: docker run --name mongodb -d -p ${{ secrets.MONGO_PORT }}:27017 -e MONGO_INITDB_ROOT_USERNAME=${{ secrets.MONGO_USER }} -e MONGO_INITDB_ROOT_PASSWORD=${{ secrets.MONGO_PASS }} mongodb/mongodb-community-server
+
+      - name: Install dependencies
+        run: |
+          pip install pytest==8.3.4 pytest-asyncio==0.25.3 httpx==0.28.1
+          pip install -r app/requirements.txt
+      - name: Setup moderated base cards
+        
+        working-directory: ./app/tools
+        run: python3 _add_base_cards.py -a 2 -f data/base_cards.json
+      - name: Run pytest
+        run: pytest -vs
\ No newline at end of file
diff --git a/.github/workflows/mypy-test.yml b/.github/workflows/mypy-test.yml
deleted file mode 100644
index 0ac5f6c..0000000
--- a/.github/workflows/mypy-test.yml
+++ /dev/null
@@ -1,22 +0,0 @@
-name: mypy-test
-
-on:
-  push:
-    paths:
-      - '**.py'
-
-jobs:
-  mypy:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Setup Python
-        uses: actions/setup-python@v4
-        with:
-          python-version: 3.9
-          architecture: x64
-      - name: Checkout
-        uses: actions/checkout@v3
-      - name: Install mypy
-        run: pip install mypy
-      - name: Run mypy
-        run: mypy --ignore-missing-imports ./app
diff --git a/.gitignore b/.gitignore
index a3c2255..e07ccd3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,7 @@
 __pycache__/
 *.py[cod]
 *$py.class
+.idea/
 
 # C extensions
 *.so
@@ -170,28 +171,4 @@ cython_debug/
 
 # PyPI configuration file
 .pypirc
-
-
-
-# React
-# dependencies
-/node_modules
-/.pnp
-.pnp.js
-
-# testing
-/coverage
-
-# production
-/build
-
-# misc
-.DS_Store
-.env.local
-.env.development.local
-.env.test.local
-.env.production.local
-
-npm-debug.log*
-yarn-debug.log*
-yarn-error.log*
+app/.env
diff --git a/README.md b/README.md
index 1b148f7..b75646a 100644
--- a/README.md
+++ b/README.md
@@ -9,15 +9,23 @@ Telegram mini-app where you have to choose one of two things.
 git clone https://github.com/IgorVolochay/thisORthat
 ```
 
+### Manual setup:
+
 2. The project is written in Python3.9. Make sure you have it on your system. Go to the project folder, create a virtual environment and download pip requirements:
 ```bash
 cd ./thisORthat
 python3.9 -m venv venv
 source ./venv/bin/activate
-pip3 install -r requirements.txt
+pip3 install -r ./app/requirements.txt
 ```
 
 3. Installing MongoDB database. You can use the [official manual](https://www.mongodb.com/docs/manual/installation/) to install MongoDB manually, or use a [Docker image](https://hub.docker.com/r/mongodb/mongodb-community-server) to run the container:
 ```bash
-docker run --name mongodb -d -p 27017:27017 mongodb/mongodb-community-server
+docker run --name mongodb -d -p 27017:27017 -e MONGO_INITDB_ROOT_USERNAME=user -e MONGO_INITDB_ROOT_PASSWORD=pass mongodb/mongodb-community-server
 ```
+### Docker Compose setup:
+
+2. Use docker-compose to automatically build the entire project. For correct build, it is better to use docker-compose version 1.29.2:
+```bash
+docker-compose up --build
+```
\ No newline at end of file
diff --git a/app/dockerfile b/app/dockerfile
new file mode 100644
index 0000000..281fd13
--- /dev/null
+++ b/app/dockerfile
@@ -0,0 +1,11 @@
+FROM python:3.9.21-alpine
+
+WORKDIR /app
+
+COPY . .
+
+RUN pip3 install -r requirements.txt
+
+EXPOSE 5000
+
+CMD ["python3", "main.py"]
\ No newline at end of file
diff --git a/app/main.py b/app/main.py
index 5a11942..e5cbb3e 100644
--- a/app/main.py
+++ b/app/main.py
@@ -1,4 +1,191 @@
+import os
+
+import uvicorn
+import asyncio
+
+from dotenv import load_dotenv
+from fastapi import FastAPI, Depends, Response, status
+
+from schemas.api_schemas import *
+from schemas.base_schemas import *
 from mongo_worker import MongoWorker
+from tools.base_moderation import moderate_text
+
+
+load_dotenv()
+disable_docs = os.getenv("DISABLE_DOCS", "true").lower() == "true"
+
+app: FastAPI = FastAPI(title="This OR That",
+                    summary="OpenAPI schema for \"This OR That\" project!",
+                    version="0.1",
+                    contact={"GitHub": "https://github.com/IgorVolochay/thisORthat"},
+                    docs_url=None if disable_docs else "/docs",
+                    redoc_url=None if disable_docs else "/redoc",
+                    openapi_url=None if disable_docs else "/openapi.json")
+mongo_worker = MongoWorker()
+
+
+@app.get("/check_user", status_code=200)
+async def check_user(user_id: NonNegativeInt,
+                     mongo: MongoWorker = Depends(lambda: mongo_worker)) -> BaseResponse:
+    result = mongo.check_user(user_id)
+    return BaseResponse(result=result)
+
+@app.get("/get_user", status_code=200)
+async def get_user(user_id: NonNegativeInt,
+                   response: Response,
+                   mongo: MongoWorker = Depends(lambda: mongo_worker)) -> BaseResponse:
+    if mongo.check_user(user_id):
+        result = mongo.get_user(user_id)
+        return BaseResponse(result=result)
+    else:
+        response.status_code = status.HTTP_404_NOT_FOUND
+        return BaseResponse(result="User doesn't exist", error=True)
+
+@app.post("/add_user", status_code=201)
+async def add_user(new_user: AddUserBody,
+                   response: Response,
+                   mongo: MongoWorker = Depends(lambda: mongo_worker)) -> BaseResponse:
+    if not mongo.check_user(new_user.user_id):
+        result = mongo.add_user(new_user.user_id,
+                                new_user.username,
+                                new_user.first_name,
+                                new_user.last_name,
+                                new_user.photo_url)
+        return BaseResponse(result=result)
+    else:
+        response.status_code = status.HTTP_409_CONFLICT
+        return BaseResponse(result="User already exist", error=True)
+    
+
+@app.get("/get_card", status_code=200)
+async def get_card(card_id: NonNegativeInt,
+                   response: Response,
+                   mongo: MongoWorker = Depends(lambda: mongo_worker)) -> BaseResponse:
+    card = mongo.get_card(card_id)
+    if card:
+        return BaseResponse(result=card)
+    else:
+        response.status_code = status.HTTP_404_NOT_FOUND
+        return BaseResponse(result="There is no card with this card_id", error=True)
+    
+@app.get("/get_random_cards", status_code=200)
+async def get_random_cards(user_id: NonNegativeInt,
+                           response: Response,
+                           mongo: MongoWorker = Depends(lambda: mongo_worker)) -> BaseResponse:
+    cards_visited = mongo.get_visited_cards(user_id)
+
+    if cards_visited.error:
+        response.status_code = status.HTTP_401_UNAUTHORIZED
+        return cards_visited
+    elif not cards_visited.result.cards_visited:
+        random_cards = mongo.get_random_cards(10, True)
+        if random_cards:
+            return BaseResponse(result=random_cards)
+        else:
+            response.status_code = status.HTTP_404_NOT_FOUND
+            return BaseResponse(result="No active cards", error=True)
+    
+    result: list[Card] = list()
+    trys = 3
+    while len(result) < 10 and trys != 0:
+        random_cards = mongo.get_random_cards(10, True)
+        if not random_cards:
+            response.status_code = status.HTTP_404_NOT_FOUND
+            return BaseResponse(result="No active cards", error=True)
+        filtered_cards, filtered_cards_id = mongo.filter_cards(random_cards, cards_visited.result.cards_visited)
+        trys -= 1
+        if not filtered_cards:
+            continue
+        else:
+            result.extend(filtered_cards)
+            cards_visited.result.cards_visited.update(filtered_cards_id)
+
+    if not result:
+        response.status_code = status.HTTP_404_NOT_FOUND
+        return BaseResponse(result="No active cards fo this user", error=True)
+    else:
+        return BaseResponse(result=result)
+    
+@app.post("/add_card", status_code=201)
+async def add_card(new_card: AddCardBody,
+                   response: Response,
+                   mongo: MongoWorker = Depends(lambda: mongo_worker)) -> BaseResponse:
+    if moderate_text(new_card.choice_A) and moderate_text(new_card.choice_B):
+        card = mongo.add_card_by_api(new_card.choice_A,
+                                     new_card.choice_B,
+                                     new_card.author_id)
+        return BaseResponse(result=card)
+    else:
+        response.status_code = status.HTTP_400_BAD_REQUEST
+        return BaseResponse(result="Card has not passed base moderation", error=True)
+    
+
+@app.patch("/select_choice", status_code=200)
+async def select_choice(choice_data: SelectChoice,
+                        response: Response,
+                        mongo: MongoWorker = Depends(lambda: mongo_worker)) -> BaseResponse:
+    check_visited = mongo.get_visited_cards(choice_data.user_id)
+    if check_visited.error:
+        response.status_code = status.HTTP_404_NOT_FOUND
+        return check_visited
+    elif not check_visited.error and choice_data.card_id in check_visited.result.cards_visited:
+        response.status_code = status.HTTP_403_FORBIDDEN
+        return BaseResponse(result="Card already visited!", error=True)
+    else:
+        select_choice_result = mongo.select_choice(choice_data.card_id, choice_data.choice)
+        if select_choice_result.error:
+            response.status_code = status.HTTP_404_NOT_FOUND
+            return select_choice_result
+        else:
+            update_visited_result = mongo.update_visited_cards(choice_data.user_id, choice_data.card_id)
+            return BaseResponse(result="Select choice complite!")
+        
+@app.patch("/like_card", status_code=200)
+async def like_card(like_data: ReactionCard,
+                    response: Response,
+                    mongo: MongoWorker = Depends(lambda: mongo_worker)) -> BaseResponse:
+    result = mongo.like_card(like_data.card_id, like_data.user_id)
+    if not result.error and result.result:
+        return BaseResponse(result="Added like to card")
+    else:
+        response.status_code = status.HTTP_404_NOT_FOUND
+        return result
+
+@app.patch("/dislike_card", status_code=200)
+async def dislike_card(dislike_data: ReactionCard,
+                    response: Response,
+                    mongo: MongoWorker = Depends(lambda: mongo_worker)) -> BaseResponse:
+    result = mongo.dislike_card(dislike_data.card_id, dislike_data.user_id)
+    if not result.error and result.result:
+        return BaseResponse(result="Added dislike to card")
+    else:
+        response.status_code = status.HTTP_404_NOT_FOUND
+        return result
+    
+@app.post("/comment", status_code=201)
+async def comment(comment_info: AddCommentBody,
+                  response: Response,
+                  mongo: MongoWorker = Depends(lambda: mongo_worker)) -> BaseResponse:
+    if not moderate_text(comment_info.comment_text):
+        response.status_code = status.HTTP_400_BAD_REQUEST
+        return BaseResponse(result="Comment has not passed base moderation", error=True)
+    
+    result = mongo.add_comment(comment_info.author_id, comment_info.card_id, comment_info.comment_text)
+    if result.error and result.result in ["User doesn't exist", "Card doesn't exist"]:
+        response.status_code = status.HTTP_404_NOT_FOUND
+        return result
+    elif result.error:
+        response.status_code = status.HTTP_400_BAD_REQUEST
+        return result
+    else:
+        return result
+    
+
+async def main():
+    config = uvicorn.Config("main:app", port=5000, log_level="debug")
+    server = uvicorn.Server(config)
+    await server.serve()
 
 if __name__ == "__main__":
-    print("Hello World!")
\ No newline at end of file
+    asyncio.run(main())
\ No newline at end of file
diff --git a/app/mongo_worker.py b/app/mongo_worker.py
index e165b4b..d3133a4 100644
--- a/app/mongo_worker.py
+++ b/app/mongo_worker.py
@@ -1,45 +1,214 @@
+import os
+
 import pymongo
 
 from datetime import datetime
+from dotenv import load_dotenv
+from typing import Optional
 
-from bson import ObjectId
+from schemas.base_schemas import *
+from schemas.api_schemas import *
 
 
 class MongoWorker:
     def __init__(self):
-        self.client = pymongo.MongoClient(host="127.0.0.1", port=27017)
+        load_dotenv()
+        self.client = pymongo.MongoClient(host = os.getenv('MONGO_HOST'),
+                                          port = int(os.getenv('MONGO_PORT')),
+                                          username = os.getenv('MONGO_USER'),
+                                          password = os.getenv('MONGO_PASS'))
         self.db = self.client["data"]
-        self.users_data = self.db["users_data"]
-        self.game_data = self.db["game_data"]
+        self.users_data = self.db["users"]
+        self.visited_data = self.db["visited"]
+        self.counters = self.db["counters"]
+        self.game_data = self.db["cards"]
+        self.comments_data = self.db["comments"]
 
-    def get_mongodb_info(self) -> None:
-        print(self.client.list_database_names())
-        print(self.db.list_collection_names())
 
-    def find_user(self, user_id: int) -> dict:
-        result = self.users_data.find_one({"user_id": user_id})
-        return result
+    def check_user(self, user_id: int) -> bool:
+        if self.users_data.find_one({"user_id": user_id}):
+            return True
+        else:
+            return False
 
-    def add_user(self, user_id: int, username: str, first_name: str, last_name: str, photo_path: str) -> ObjectId:
+    def add_user(self, user_id: int, username: str, first_name: str, last_name: str, photo_url: str) -> User:
+        new_user = User(user_id=user_id,
+                        username=username,
+                        first_name=first_name,
+                        last_name=last_name,
+                        photo_url=photo_url,
+                        registration_date=datetime.now().isoformat())
         try:
-            res = self.users_data.insert_one({"user_id": user_id,
-                                              "username": username,
-                                              "first_name": first_name,
-                                              "last_name": last_name,
-                                              "photo_path": photo_path,
-                                              "activity": 0,
-                                              "liked_post_ids": [],
-                                              "disliked_post_ids": [],
-                                              "comments_ids": [],
-                                              "registration_date": datetime.now().isoformat()
-                                              })
-            return res.inserted_id
+            self.users_data.insert_one(new_user.model_dump())
+            return new_user
+        except Exception as exception:
+            return new_user
+
+    def get_user(self, user_id: int) -> User:
+        return User.model_validate(self.users_data.find_one({"user_id": user_id}))
+    
+
+    def get_and_update_counter(self, counter_name: str) -> int:
+        counter = self.counters.find_one_and_update(
+            {"counter_name": counter_name},
+            {"$inc": {"counter": 1}},
+            upsert=True,
+            return_document=True)
+        return counter["counter"]
+    
+    
+    def get_visited_cards(self, user_id: int) -> BaseResponse:
+        document = self.visited_data.find_one({"user_id": user_id})
+        if not document:
+            check_user = self.check_user(user_id)
+            if check_user:
+                return BaseResponse(result=Visited(user_id=user_id,
+                                                   cards_visited=set()))
+            else:
+                return BaseResponse(result="User doesn't exist", error=True)
+        else:
+            return BaseResponse(result=Visited.model_validate(document))
+        
+    def filter_cards(self, random_cards: list[Card], cards_visited: set) -> tuple[list[Card], list[int]]:
+        filtered_cards = [card for card in random_cards if card.card_id not in cards_visited]
+        filtered_cards_id = [filtered_card.card_id for filtered_card in filtered_cards]
+        
+        return filtered_cards, filtered_cards_id
+    
+    def update_visited_cards(self, user_id: int, visited_card_id: int) -> Visited:
+        update_visited = self.visited_data.find_one_and_update({"user_id": user_id},
+                                                               {"$addToSet": {"cards_visited": visited_card_id}},
+                                                               upsert=True,
+                                                               return_document=True)
+        return Visited.model_validate(update_visited)
+
+
+    def add_card_by_api(self, choice_A: str, choice_B: str, author_id: int) -> Card:
+        new_card = Card(card_id=self.get_and_update_counter(counter_name="card"),
+                        choice_A=choice_A,
+                        choice_B=choice_B,
+                        author_id=author_id,
+                        creation_date=datetime.now().isoformat())
+        try:
+            self.game_data.insert_one(new_card.model_dump())
+            return new_card
         except Exception as exception:
             print(exception)
+            return new_card
+        
+    def add_card_by_base_model(self, new_card: Card) -> Optional[Card]:
+        new_card.card_id = self.get_and_update_counter(counter_name="card")
+        try:
+            self.game_data.insert_one(new_card.model_dump())
+            return new_card
+        except Exception as exception:
+            print(exception)
+            return new_card
+        
+    def get_card(self, card_id: int) -> Optional[Card]:
+        document = self.game_data.find_one({"card_id": card_id})
+        if document:
+            return Card.model_validate(document)
+        else:
+            return None
 
+    def get_random_cards(self, amount: int, active_status: bool) -> Optional[list[Card]]:
+        pipeline = [{"$match": {"active_status": active_status}}, 
+                    {"$sample": {"size": amount}}]
+        raw_items = list(self.game_data.aggregate(pipeline))
 
-if __name__ == "__main__":
-    mongo = MongoWorker()
-    mongo.get_mongodb_info()
-    print(mongo.add_user(123, "VolochayIgor", "Igor", "Volochay", "path/to/img"))
-    print(mongo.find_user(123))
+        if raw_items:
+            validated_items = [Card.model_validate(item) for item in raw_items]
+            return validated_items
+        else:
+            return None
+        
+
+    def select_choice(self, card_id: int, choice: str) -> BaseResponse:
+        if choice == "A":
+            count_choice = "count_choice_A"
+        elif choice == "B":
+            count_choice = "count_choice_B"
+        else:
+            return BaseResponse(result="Wrong choice", error=True)
+        
+        result = self.game_data.find_one_and_update({"card_id": card_id},
+                                                    {"$inc": {"count_total": 1, count_choice: 1}})
+        
+        if not result:
+            return BaseResponse(result="Card doesn't exist", error=True)
+        else:
+            return BaseResponse(result=result, error=False)
+    
+    def check_user_reactions(self, user_id: int, card_id: int) -> BaseResponse:
+        user_info: User = self.get_user(user_id)
+        liked_card_ids: list = user_info.liked_card_ids
+        disliked_card_ids: list = user_info.disliked_card_ids
+
+        if card_id in liked_card_ids:
+            return BaseResponse(result="Card already liked", error=True)
+        elif card_id in disliked_card_ids:
+            return BaseResponse(result="Card already disliked", error=True)
+        else:
+            return BaseResponse(result="No reactions", error=False)
+
+    def like_card(self, card_id: int, user_id: int) -> BaseResponse:
+        if self.check_user(user_id):
+            user_reaction = self.check_user_reactions(user_id, card_id)
+            if user_reaction.error:
+                return user_reaction
+            update_card_info = self.game_data.find_one_and_update({"card_id": card_id}, 
+                                                                {"$inc": {"count_likes": 1}})
+            if not update_card_info:
+                return BaseResponse(result="Card doesn't exist", error=True)
+            
+            add_card_to_user = self.users_data.update_one({'user_id': user_id},
+                                                          {'$push': {'liked_card_ids': card_id}})
+            if not add_card_to_user:
+                return BaseResponse(result="User doesn't exist", error=True)
+            else:
+                return BaseResponse(result=True, error=False)
+        else:
+            return BaseResponse(result="User doesn't exist", error=True)
+            
+    def dislike_card(self, card_id: int, user_id: int) -> BaseResponse:
+        if self.check_user(user_id):
+            user_reaction = self.check_user_reactions(user_id, card_id)
+            if user_reaction.error:
+                return user_reaction
+            update_card_info = self.game_data.find_one_and_update({"card_id": card_id}, 
+                                                                {"$inc": {"count_dislikes": 1}})
+            if not update_card_info:
+                return BaseResponse(result="Card doesn't exist", error=True)
+            
+            add_card_to_user = self.users_data.update_one({'user_id': user_id},
+                                                          {'$push': {'disliked_card_ids': card_id}})
+            if not add_card_to_user:
+                return BaseResponse(result="User doesn't exist", error=True)
+            else:
+                return BaseResponse(result=True, error=False)
+        else:
+            return BaseResponse(result="User doesn't exist", error=True)
+        
+    def add_comment(self, user_id: int, card_id: int, comment_text: str) -> BaseResponse:
+        if self.check_user(user_id):
+            if self.get_card(card_id):
+                new_comment = Comment(comment_id=self.get_and_update_counter(counter_name="comment"),
+                                    author_id=user_id,
+                                    card_id=card_id,
+                                    commet_text=comment_text,
+                                    creation_date=datetime.now().isoformat())
+                result = self.comments_data.insert_one(new_comment.model_dump())
+                if result:
+                    update_user_comments = self.users_data.find_one_and_update({"user_id": user_id},
+                                                        {"$addToSet": {"comments_ids": new_comment.comment_id}})
+                    if update_user_comments:
+                        return BaseResponse(result=new_comment)
+                    else:
+                        return BaseResponse(result="Difficulty adding comment_id to user", error=True)
+                else:
+                    return BaseResponse(result="Add comment error", error=True)
+            else:
+                return BaseResponse(result="Card doesn't exist", error=True)
+        else:
+            return BaseResponse(result="User doesn't exist", error=True)
\ No newline at end of file
diff --git a/app/requirements.txt b/app/requirements.txt
new file mode 100644
index 0000000..f0ee27b
--- /dev/null
+++ b/app/requirements.txt
@@ -0,0 +1,4 @@
+fastapi==0.115.7
+pymongo==4.10.1
+python-dotenv==1.0.1
+uvicorn==0.34.0
\ No newline at end of file
diff --git a/app/schemas/__init__.py b/app/schemas/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/app/schemas/api_schemas.py b/app/schemas/api_schemas.py
new file mode 100644
index 0000000..745d791
--- /dev/null
+++ b/app/schemas/api_schemas.py
@@ -0,0 +1,38 @@
+import typing
+
+from pydantic import BaseModel, NonNegativeInt
+
+
+class BaseResponse(BaseModel):
+    result: typing.Any
+    error: bool = False
+
+class AddUserBody(BaseModel):
+    user_id: NonNegativeInt
+    username: str
+
+    first_name: str
+    last_name: str
+    photo_url: str
+
+class AddCardBody(BaseModel):
+    choice_A: str
+    choice_B: str
+
+    author_id: NonNegativeInt
+
+class SelectChoice(BaseModel):
+    user_id: NonNegativeInt
+    card_id: NonNegativeInt
+
+    choice: typing.Literal["A", "B"]
+
+class ReactionCard(BaseModel):
+    user_id: NonNegativeInt
+    card_id: NonNegativeInt
+
+class AddCommentBody(BaseModel):
+    author_id: NonNegativeInt
+    card_id: NonNegativeInt
+
+    comment_text: str
\ No newline at end of file
diff --git a/app/schemas/base_schemas.py b/app/schemas/base_schemas.py
new file mode 100644
index 0000000..52f5464
--- /dev/null
+++ b/app/schemas/base_schemas.py
@@ -0,0 +1,48 @@
+from pydantic import BaseModel
+
+class User(BaseModel):
+    user_id: int
+    username: str
+
+    first_name: str
+    last_name: str
+    photo_url: str
+
+    activity: int = 0
+    liked_card_ids: list[int] = list()
+    disliked_card_ids: list[int] = list()
+    comments_ids: list[int] = list()
+
+    registration_date: str
+
+class Visited(BaseModel):
+    user_id: int
+    cards_visited: set[int]
+
+class Card(BaseModel):
+    card_id: int
+
+    choice_A: str
+    choice_B: str
+
+    count_choice_A: int = 0
+    count_choice_B: int = 0
+    count_total: int = 0
+
+    count_likes: int = 0
+    count_dislikes: int = 0
+    comments: list[int] = list()
+
+    author_id: int
+    creation_date: str
+    moderation_date: str = "Not moderated"
+    active_status: bool = False
+
+class Comment(BaseModel):
+    comment_id: int
+
+    author_id: int
+    card_id: int
+    commet_text: str
+
+    creation_date: str
\ No newline at end of file
diff --git a/app/tests/__init__.py b/app/tests/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/app/tests/test_cards.py b/app/tests/test_cards.py
new file mode 100644
index 0000000..1e0cbab
--- /dev/null
+++ b/app/tests/test_cards.py
@@ -0,0 +1,186 @@
+import random
+import asyncio
+import pytest
+from httpx import AsyncClient, ASGITransport
+
+from main import app
+from schemas.base_schemas import *
+from schemas.api_schemas import *
+
+
+EXIST_AUTHOR = random.randint(100000000, 1000000000)
+NON_EXIST_CARD_ID = 1000
+
+
+# ---------- /add_card ----------
+
+@pytest.mark.asyncio
+async def test_add_card_valid():
+    async with AsyncClient(transport=ASGITransport(app=app), base_url="http://test") as client:
+        payload = {
+            "choice_A": "Option A",
+            "choice_B": "Option B",
+            "author_id": EXIST_AUTHOR
+        }
+        response = await client.post("/add_card", json=payload)
+        print(f"\nINPUT: endpoint=/add_card | payload={payload}\nOUTPUT: status={response.status_code} | json={response.json()}")
+        assert response.status_code in (200, 201)
+        base_resp = BaseResponse.model_validate(response.json())
+        assert base_resp.error is False
+        card = Card.model_validate(base_resp.result)
+        assert card.choice_A == payload["choice_A"]
+        assert card.choice_B == payload["choice_B"]
+        assert card.author_id == payload["author_id"]
+
+@pytest.mark.asyncio
+async def test_add_card_missing_field():
+    async with AsyncClient(transport=ASGITransport(app=app), base_url="http://test") as client:
+        payload = {
+            #choice_A
+            "choice_B": "Option B",
+            "author_id": EXIST_AUTHOR
+        }
+        response = await client.post("/add_card", json=payload)
+        print(f"\nINPUT: endpoint=/add_card | payload (missing field)={payload}\nOUTPUT: status={response.status_code} | json={response.json()}")
+        assert response.status_code == 422
+
+@pytest.mark.asyncio
+async def test_add_card_wrong_type():
+    async with AsyncClient(transport=ASGITransport(app=app), base_url="http://test") as client:
+        payload = {
+            "choice_A": 123,
+            "choice_B": "Option B",
+            "author_id": EXIST_AUTHOR
+        }
+        response = await client.post("/add_card", json=payload)
+        print(f"\nINPUT: endpoint=/add_card | payload (wrong type)={payload}\nOUTPUT: status={response.status_code} | json={response.json()}")
+        assert response.status_code == 422
+
+@pytest.mark.asyncio
+async def test_add_card_empty_strings():
+    async with AsyncClient(transport=ASGITransport(app=app), base_url="http://test") as client:
+        payload = {
+            "choice_A": "",
+            "choice_B": "",
+            "author_id": EXIST_AUTHOR
+        }
+        response = await client.post("/add_card", json=payload)
+        print(f"\nINPUT: endpoint=/add_card | payload (empty strings)={payload}\nOUTPUT: status={response.status_code} | json={response.json()}")
+        assert response.status_code == 400
+
+@pytest.mark.asyncio
+async def test_add_card_long_strings():
+    async with AsyncClient(transport=ASGITransport(app=app), base_url="http://test") as client:
+        long_str = "A" * 5000  # long string
+        payload = {
+            "choice_A": long_str,
+            "choice_B": long_str,
+            "author_id": EXIST_AUTHOR
+        }
+        response = await client.post("/add_card", json=payload)
+        print(f"\nINPUT: endpoint=/add_card | payload with long strings (length={len(long_str)})\nOUTPUT: status={response.status_code} | json={response.json()}")
+        assert response.status_code == 400
+
+@pytest.mark.asyncio
+async def test_add_card_negative_author_id():
+    async with AsyncClient(transport=ASGITransport(app=app), base_url="http://test") as client:
+        payload = {
+            "choice_A": "Option A",
+            "choice_B": "Option B",
+            "author_id": -10 # Negative id
+        }
+        response = await client.post("/add_card", json=payload)
+        print(f"\nINPUT: endpoint=/add_card | payload (negative author_id)={payload}\nOUTPUT: status={response.status_code} | json={response.json()}")
+        assert response.status_code == 422
+
+@pytest.mark.asyncio
+async def test_add_card_malformed_json():
+    async with AsyncClient(transport=ASGITransport(app=app), base_url="http://test") as client:
+        malformed_json = '{"choice_A": "Option A", "choice_B": "Option B", "author_id": 123' # broken json
+        response = await client.post(
+            "/add_card",
+            data=malformed_json,
+            headers={"Content-Type": "application/json"}
+        )
+        print(f"\nINPUT: endpoint=/add_card | payload (malformed JSON)={malformed_json}\nOUTPUT: status={response.status_code} | json={response.json() if response.content else 'No JSON'}")
+        assert response.status_code == 422
+
+@pytest.mark.asyncio
+async def test_async_card_creation():
+    async with AsyncClient(transport=ASGITransport(app=app), base_url="http://test") as client:
+        tasks = []
+        num_cards = 8
+        for i in range(num_cards):
+            payload = {
+                "choice_A": f"Async Option A {i}",
+                "choice_B": f"Async Option B {i}",
+                "author_id": EXIST_AUTHOR
+            }
+            tasks.append(client.post("/add_card", json=payload))
+        responses = await asyncio.gather(*tasks)
+        
+        card_ids = []
+        for idx, response in enumerate(responses):
+            print(f"\nAsync creation {idx}: status={response.status_code}, response={response.json()}")
+            assert response.status_code in (200, 201)
+            base_resp = BaseResponse.model_validate(response.json())
+            assert base_resp.error is False
+            card = Card.model_validate(base_resp.result)
+            card_ids.append(card.card_id)
+            assert card.choice_A == f"Async Option A {idx}"
+            assert card.choice_B == f"Async Option B {idx}"
+            assert card.author_id == EXIST_AUTHOR
+
+        assert len(set(card_ids)) == num_cards
+
+
+# ---------- /get_card ----------
+
+@pytest.mark.asyncio
+async def test_get_card_valid():
+    async with AsyncClient(transport=ASGITransport(app=app), base_url="http://test") as client:
+        payload = {
+            "choice_A": "GetTest A",
+            "choice_B": "GetTest B",
+            "author_id": EXIST_AUTHOR
+        }
+        create_resp = await client.post("/add_card", json=payload)
+        base_create = BaseResponse.model_validate(create_resp.json())
+        card = Card.model_validate(base_create.result)
+        card_id = card.card_id
+
+        response = await client.get("/get_card", params={"card_id": card_id})
+        print(f"\nINPUT: endpoint=/get_card | params={{'card_id': {card_id}}}\nOUTPUT: status={response.status_code} | json={response.json()}")
+        assert response.status_code == 200
+        base_resp = BaseResponse.model_validate(response.json())
+        assert base_resp.error is False
+        card_from_get = Card.model_validate(base_resp.result)
+        assert card_from_get.card_id == card_id
+
+@pytest.mark.asyncio
+async def test_get_card_nonexistent():
+    async with AsyncClient(transport=ASGITransport(app=app), base_url="http://test") as client:
+        response = await client.get("/get_card", params={"card_id": NON_EXIST_CARD_ID})
+        print(f"\nINPUT: endpoint=/get_card | params={{'card_id': {NON_EXIST_CARD_ID}}}\nOUTPUT: status={response.status_code} | json={response.json()}")
+        assert response.status_code == 404
+
+@pytest.mark.asyncio
+async def test_get_card_missing_param():
+    async with AsyncClient(transport=ASGITransport(app=app), base_url="http://test") as client:
+        response = await client.get("/get_card")
+        print(f"\nINPUT: endpoint=/get_card (missing card_id param)\nOUTPUT: status={response.status_code} | json={response.json() if response.content else 'No content'}")
+        assert response.status_code == 422
+
+@pytest.mark.asyncio
+async def test_get_card_wrong_type():
+    async with AsyncClient(transport=ASGITransport(app=app), base_url="http://test") as client:
+        response = await client.get("/get_card", params={"card_id": "abc"})
+        print(f"\nINPUT: endpoint=/get_card | params={{'card_id': 'abc'}}\nOUTPUT: status={response.status_code} | json={response.json()}")
+        assert response.status_code == 422
+
+@pytest.mark.asyncio
+async def test_get_card_negative():
+    async with AsyncClient(transport=ASGITransport(app=app), base_url="http://test") as client:
+        response = await client.get("/get_card", params={"card_id": -10})
+        print(f"\nINPUT: endpoint=/get_card | params={{'card_id': -10}}\nOUTPUT: status={response.status_code} | json={response.json()}")
+        assert response.status_code == 422
\ No newline at end of file
diff --git a/app/tests/test_user_info.py b/app/tests/test_user_info.py
new file mode 100644
index 0000000..67f52c4
--- /dev/null
+++ b/app/tests/test_user_info.py
@@ -0,0 +1,154 @@
+import random
+
+import pytest
+
+from main import app
+from schemas.api_schemas import *
+from schemas.base_schemas import *
+
+from httpx import AsyncClient, ASGITransport
+
+
+EXIST_USER = random.randint(100000000, 1000000000) 
+NON_EXIST_USER = random.randint(100000000, 1000000000)
+
+
+
+# TEST ADD USERS UTILS #
+
+@pytest.mark.asyncio
+async def test_add_user_non_full_data():
+    async with AsyncClient(transport=ASGITransport(app=app),
+                           base_url='http://test') as client:
+        end_point = "/add_user"
+        data = {
+            "user_id": EXIST_USER,
+            "username": "TestUsername",
+            }
+        raw_response = await client.post(url=end_point,json=data)
+        print(f"\nINPUT: endpiont={end_point} | params={data}\nOUTPUT: status={raw_response.status_code} | json={raw_response.json()}")
+
+        assert raw_response.status_code == 422
+
+@pytest.mark.asyncio
+async def test_add_user_negative_int_id():
+    async with AsyncClient(transport=ASGITransport(app=app),
+                           base_url='http://test') as client:
+        end_point = "/add_user"
+        data = {
+            "user_id": -1,
+            "username": "TestUsername",
+            "first_name": "FName",
+            "last_name": "LName",
+            "photo_url": "http://test.test/photo.jpg"
+            }
+        raw_response = await client.post(url=end_point,json=data)
+        print(f"\nINPUT: endpiont={end_point} | params={data}\nOUTPUT: status={raw_response.status_code} | json={raw_response.json()}")
+
+        assert raw_response.status_code == 422
+
+@pytest.mark.asyncio
+async def test_add_new_user():
+    async with AsyncClient(transport=ASGITransport(app=app),
+                           base_url='http://test') as client:
+        end_point = "/add_user"
+        data = {
+            "user_id": EXIST_USER,
+            "username": "TestUsername",
+            "first_name": "FName",
+            "last_name": "LName",
+            "photo_url": "http://test.test/photo.jpg"
+            }
+        raw_response = await client.post(url=end_point,json=data)
+        print(f"\nINPUT: endpiont={end_point} | params={data}\nOUTPUT: status={raw_response.status_code} | json={raw_response.json()}")
+
+        assert raw_response.status_code == 201
+        response = BaseResponse.model_validate(raw_response.json())
+        assert response.error == False
+        assert User.model_validate(response.result)
+
+@pytest.mark.asyncio
+async def test_add_already_exist_user():
+    async with AsyncClient(transport=ASGITransport(app=app),
+                           base_url='http://test') as client:
+        end_point = "/add_user"
+        data = {
+            "user_id": EXIST_USER,
+            "username": "TestUsername",
+            "first_name": "FName",
+            "last_name": "LName",
+            "photo_url": "http://test.test/photo.jpg"
+            }
+        raw_response = await client.post(url=end_point,json=data)
+        print(f"\nINPUT: endpiont={end_point} | params={data}\nOUTPUT: status={raw_response.status_code} | json={raw_response.json()}")
+
+        assert raw_response.status_code == 409
+        response = BaseResponse.model_validate(raw_response.json())
+        assert response.error == True
+        assert response.result == "User already exist"
+
+
+
+
+# TEST CHECK USERS UTILS #
+
+@pytest.mark.asyncio
+async def test_check_non_exist_user():
+    async with AsyncClient(transport=ASGITransport(app=app),
+                           base_url='http://test') as client:
+        end_point = "/check_user"
+        params = {"user_id": NON_EXIST_USER}
+        raw_response = await client.get(url=end_point, params=params)
+        print(f"\nINPUT: endpiont={end_point} | params={params}\nOUTPUT: status={raw_response.status_code} | json={raw_response.json()}")
+
+        assert raw_response.status_code == 200
+        response = BaseResponse.model_validate(raw_response.json())
+        assert response.error == False
+        assert response.result == False
+
+@pytest.mark.asyncio
+async def test_check_exist_user():
+    async with AsyncClient(transport=ASGITransport(app=app),
+                           base_url='http://test') as client:
+        end_point = "/check_user"
+        params = {"user_id": EXIST_USER}
+        raw_response = await client.get(url=end_point, params=params)
+        print(f"\nINPUT: endpiont={end_point} | params={params}\nOUTPUT: status={raw_response.status_code} | json={raw_response.json()}")
+
+        assert raw_response.status_code == 200
+        response = BaseResponse.model_validate(raw_response.json())
+        assert response.error == False
+        assert response.result == True
+
+
+
+
+# TEST GET USERS UTILS #
+
+@pytest.mark.asyncio
+async def test_get_non_exist_user():
+    async with AsyncClient(transport=ASGITransport(app=app),
+                           base_url='http://test') as client:
+        end_point = "/get_user"
+        params = {"user_id": NON_EXIST_USER}
+        raw_response = await client.get(url=end_point, params=params)
+        print(f"\nINPUT: endpiont={end_point} | params={params}\nOUTPUT: status={raw_response.status_code} | json={raw_response.json()}")
+
+        assert raw_response.status_code == 404
+        response = BaseResponse.model_validate(raw_response.json())
+        assert response.error == True 
+        assert response.result == "User doesn't exist"
+
+@pytest.mark.asyncio
+async def test_get_exist_user():
+    async with AsyncClient(transport=ASGITransport(app=app),
+                           base_url='http://test') as client:
+        end_point = "/get_user"
+        params = {"user_id": EXIST_USER}
+        raw_response = await client.get(url=end_point, params=params)
+        print(f"\nINPUT: endpiont={end_point} | params={params}\nOUTPUT: status={raw_response.status_code} | json={raw_response.json()}")
+
+        assert raw_response.status_code == 200
+        response = BaseResponse.model_validate(raw_response.json())
+        assert response.error == False 
+        assert User.model_validate(response.result)
\ No newline at end of file
diff --git a/app/tests/test_visited_cards.py b/app/tests/test_visited_cards.py
new file mode 100644
index 0000000..62ea676
--- /dev/null
+++ b/app/tests/test_visited_cards.py
@@ -0,0 +1,92 @@
+import random
+import asyncio
+import pytest
+from httpx import AsyncClient, ASGITransport
+
+from main import app
+from schemas.base_schemas import *
+from schemas.api_schemas import *
+
+EXIST_USER = random.randint(100000000, 1000000000)
+EXIST_AUTHOR = random.randint(100000000, 1000000000)
+NO_ACTIVE_CARDS_STATUS = False
+ACTIVE_CARDS_LESS_THAN_TEN = False
+
+# ------------- /add_user ---------------
+
+@pytest.mark.asyncio
+async def test_add_new_user():
+    async with AsyncClient(transport=ASGITransport(app=app),
+                           base_url='http://test') as client:
+        end_point = "/add_user"
+        data = {
+            "user_id": EXIST_USER,
+            "username": "TestUsername",
+            "first_name": "FName",
+            "last_name": "LName",
+            "photo_url": "http://test.test/photo.jpg"
+            }
+        raw_response = await client.post(url=end_point,json=data)
+        print(f"\nINPUT: endpiont={end_point} | params={data}\nOUTPUT: status={raw_response.status_code} | json={raw_response.json()}")
+
+        assert raw_response.status_code == 201
+        response = BaseResponse.model_validate(raw_response.json())
+        assert response.error == False
+        assert User.model_validate(response.result)
+
+# ---------- /get_random_cards ----------
+
+@pytest.mark.asyncio
+async def test_get_random_cards_valid():
+    async with AsyncClient(transport=ASGITransport(app=app), base_url="http://test") as client:
+        params = {"user_id": EXIST_USER}
+        response = await client.get("/get_random_cards", params=params)
+        print(f"\nINPUT: endpoint=/get_random_cards\nOUTPUT: status={response.status_code} | json={response.json()}")
+        if response.status_code == 404 and BaseResponse.model_validate(response.json()).result == "No active cards":
+            global NO_ACTIVE_CARDS_STATUS
+            NO_ACTIVE_CARDS_STATUS = True
+            pytest.skip(reason="No active cards in MongoDB")
+        else:
+            assert response.status_code == 200
+            result = response.json().get("result")
+            assert isinstance(result, list)
+            if len(result) == 10:
+                for card in result:
+                    assert "choice_A" in card
+                    assert "choice_B" in card
+                    assert "author_id" in card
+                    assert "card_id" in card
+            else:
+                global ACTIVE_CARDS_LESS_THAN_TEN
+                ACTIVE_CARDS_LESS_THAN_TEN = True
+                pytest.skip(reason="The number of active cards is less than 10 in MongoDB")
+
+@pytest.mark.asyncio
+async def test_get_random_cards_randomness():
+    async with AsyncClient(transport=ASGITransport(app=app), base_url="http://test") as client:
+        params = {"user_id": EXIST_USER}
+        response1 = await client.get("/get_random_cards", params=params)
+        response2 = await client.get("/get_random_cards", params=params)
+        result1 = response1.json().get("result")
+        result2 = response2.json().get("result")
+        print(f"\nINPUT: endpoint=/get_random_cards (двойной вызов)\nOUTPUT 1: {result1}\nOUTPUT 2: {result2}")
+        if len(result1) == 10 and len(result2) == 10:
+            assert result1 != result2
+
+@pytest.mark.asyncio
+async def test_get_random_cards_parallel_requests():
+    if NO_ACTIVE_CARDS_STATUS:
+        pytest.skip(reason="No active cards in MongoDB")
+    elif ACTIVE_CARDS_LESS_THAN_TEN:
+        pytest.skip(reason="The number of active cards is less than 10 in MongoDB")
+    else:
+        async with AsyncClient(transport=ASGITransport(app=app), base_url="http://test") as client:
+            params = {"user_id": EXIST_USER}
+            tasks = [client.get("/get_random_cards", params=params) for _ in range(5)]
+            responses = await asyncio.gather(*tasks)
+            for resp in responses:
+                print(f"\nParallel call: status={resp.status_code} | json={resp.json()}")
+                assert resp.status_code == 200
+                result = resp.json().get("result")
+                assert isinstance(result, list)
+                assert len(result) == 10
\ No newline at end of file
diff --git a/app/tools/__init__.py b/app/tools/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/app/tools/_add_base_cards.py b/app/tools/_add_base_cards.py
new file mode 100644
index 0000000..0e8ce00
--- /dev/null
+++ b/app/tools/_add_base_cards.py
@@ -0,0 +1,72 @@
+import argparse
+import sys
+import json
+from datetime import datetime
+
+sys.path.append('..')
+from mongo_worker import MongoWorker
+from schemas.base_schemas import Card
+
+
+def create_cards(num_cards=10, author_id=1):
+    cards_list = []
+    for card_id in range(1, num_cards + 1):
+        print(f"Creating Card {card_id}")
+        card = Card(
+            card_id=card_id,
+            choice_A=input("Choice A: "),
+            choice_B=input("Choice B: "),
+            author_id=author_id,
+            creation_date=datetime.now().isoformat(),
+            moderation_date=datetime.now().isoformat(),
+            active_status=True
+        )
+        cards_list.append(card)
+    return cards_list
+
+def read_json(json_file):
+    try:
+        with open(json_file, 'r', encoding='utf-8') as f:
+            data = json.load(f)
+        return [Card(**card) for card in data]
+    except Exception as e:
+        print(f"Error reading JSON file: {e}")
+        return []
+
+def write_json(cards_list, json_file):
+    try:
+        with open(json_file, 'w', encoding='utf-8') as f:
+            json.dump([card.model_dump() for card in cards_list], f, ensure_ascii=False, indent=4)
+        print(f"Successfully saved {len(cards_list)} cards to {json_file}")
+    except Exception as e:
+        print(f"Error writing to JSON file: {e}")
+
+def add_cards_to_mongodb(cards_list):
+    mongo = MongoWorker()
+    for card in cards_list:
+        mongo.add_card_by_base_model(card)
+    print(f"Successfully added {len(cards_list)} cards to MongoDB")
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    parser.add_argument('-a', '--action', type=int, required=True, choices=[0, 1, 2],
+                        help="0 - Manual input & save to MongoDB, 1 - Manual input & save to JSON, 2 - Read JSON & save to MongoDB")
+    parser.add_argument('-f', '--file', type=str, default="cards.json", help="JSON file name for reading/writing")
+    parser.add_argument('-n', '--num', type=int, default=10, help="Number of cards to create")
+    parser.add_argument('-u', '--user', type=int, default=1, help="Author ID")
+    
+    args = parser.parse_args()
+    
+    if args.action == 0:
+        cards = create_cards(args.num, args.user)
+        add_cards_to_mongodb(cards)
+    elif args.action == 1:
+        cards = create_cards(args.num, args.user)
+        write_json(cards, args.file)
+    elif args.action == 2:
+        cards = read_json(args.file)
+        if cards:
+            add_cards_to_mongodb(cards)
+        else:
+            print("No valid cards found in JSON file.")
diff --git a/app/tools/base_moderation.py b/app/tools/base_moderation.py
new file mode 100644
index 0000000..ad6772a
--- /dev/null
+++ b/app/tools/base_moderation.py
@@ -0,0 +1,24 @@
+import re
+
+from tools.data.dirty_words import dirty_words_set
+
+def is_not_empty(text: str) -> bool:
+    """Checks that the text is not empty."""
+    return bool(text.strip())
+
+def has_no_links(text: str) -> bool:
+    """Checks that there are no links in the text."""
+    url_pattern = re.compile(r'https?://\S+|www\.\S+')
+    return not bool(url_pattern.search(text))
+
+def has_no_dirty_words(text: str) -> bool:
+    """Checks that there are no forbidden words in the text."""
+    words = set(re.findall(r'\w+', text.lower()))
+    return not bool(words & dirty_words_set)
+
+def text_lenght(text: str) -> bool:
+    """Check max text lenght"""
+    return len(text) <= 150 # TODO: update in future
+
+def moderate_text(text: str) -> bool:
+    return is_not_empty(text) and has_no_links(text) and has_no_dirty_words(text) and text_lenght(text)
diff --git a/app/tools/data/base_cards.json b/app/tools/data/base_cards.json
new file mode 100644
index 0000000..8320fcc
--- /dev/null
+++ b/app/tools/data/base_cards.json
@@ -0,0 +1,152 @@
+[
+    {
+        "card_id": 1,
+        "choice_A": "Котики",
+        "choice_B": "Собачки",
+        "count_choice_A": 0,
+        "count_choice_B": 0,
+        "count_total": 0,
+        "count_likes": 0,
+        "count_dislikes": 0,
+        "comments": [],
+        "author_id": 1,
+        "creation_date": "2025-03-04T16:56:05.290110",
+        "moderation_date": "2025-03-04T16:56:05.290143",
+        "active_status": true
+    },
+    {
+        "card_id": 2,
+        "choice_A": "Чай",
+        "choice_B": "Кофе",
+        "count_choice_A": 0,
+        "count_choice_B": 0,
+        "count_total": 0,
+        "count_likes": 0,
+        "count_dislikes": 0,
+        "comments": [],
+        "author_id": 1,
+        "creation_date": "2025-03-04T16:56:11.108762",
+        "moderation_date": "2025-03-04T16:56:11.108793",
+        "active_status": true
+    },
+    {
+        "card_id": 3,
+        "choice_A": "Отпуск в горах",
+        "choice_B": "Отпуск на море",
+        "count_choice_A": 0,
+        "count_choice_B": 0,
+        "count_total": 0,
+        "count_likes": 0,
+        "count_dislikes": 0,
+        "comments": [],
+        "author_id": 1,
+        "creation_date": "2025-03-04T16:56:25.062542",
+        "moderation_date": "2025-03-04T16:56:25.062586",
+        "active_status": true
+    },
+    {
+        "card_id": 4,
+        "choice_A": "День",
+        "choice_B": "Ночь",
+        "count_choice_A": 0,
+        "count_choice_B": 0,
+        "count_total": 0,
+        "count_likes": 0,
+        "count_dislikes": 0,
+        "comments": [],
+        "author_id": 1,
+        "creation_date": "2025-03-04T16:56:34.148692",
+        "moderation_date": "2025-03-04T16:56:34.148725",
+        "active_status": true
+    },
+    {
+        "card_id": 5,
+        "choice_A": "Работать в офисе",
+        "choice_B": "Работать удалённо",
+        "count_choice_A": 0,
+        "count_choice_B": 0,
+        "count_total": 0,
+        "count_likes": 0,
+        "count_dislikes": 0,
+        "comments": [],
+        "author_id": 1,
+        "creation_date": "2025-03-04T16:57:00.723472",
+        "moderation_date": "2025-03-04T16:57:00.723518",
+        "active_status": true
+    },
+    {
+        "card_id": 6,
+        "choice_A": "Заниматься спортом",
+        "choice_B": "Играть в видеоигры",
+        "count_choice_A": 0,
+        "count_choice_B": 0,
+        "count_total": 0,
+        "count_likes": 0,
+        "count_dislikes": 0,
+        "comments": [],
+        "author_id": 1,
+        "creation_date": "2025-03-04T16:57:31.524721",
+        "moderation_date": "2025-03-04T16:57:31.524754",
+        "active_status": true
+    },
+    {
+        "card_id": 7,
+        "choice_A": "Гулять",
+        "choice_B": "Сидеть дома",
+        "count_choice_A": 0,
+        "count_choice_B": 0,
+        "count_total": 0,
+        "count_likes": 0,
+        "count_dislikes": 0,
+        "comments": [],
+        "author_id": 1,
+        "creation_date": "2025-03-04T16:57:52.022380",
+        "moderation_date": "2025-03-04T16:57:52.022413",
+        "active_status": true
+    },
+    {
+        "card_id": 8,
+        "choice_A": "Посмотреть фильм",
+        "choice_B": "Почитать книжку",
+        "count_choice_A": 0,
+        "count_choice_B": 0,
+        "count_total": 0,
+        "count_likes": 0,
+        "count_dislikes": 0,
+        "comments": [],
+        "author_id": 1,
+        "creation_date": "2025-03-04T16:58:15.032749",
+        "moderation_date": "2025-03-04T16:58:15.032762",
+        "active_status": true
+    },
+    {
+        "card_id": 9,
+        "choice_A": "Зима",
+        "choice_B": "Лето",
+        "count_choice_A": 0,
+        "count_choice_B": 0,
+        "count_total": 0,
+        "count_likes": 0,
+        "count_dislikes": 0,
+        "comments": [],
+        "author_id": 1,
+        "creation_date": "2025-03-04T16:58:24.800416",
+        "moderation_date": "2025-03-04T16:58:24.800450",
+        "active_status": true
+    },
+    {
+        "card_id": 10,
+        "choice_A": "Лучший друг/подруга",
+        "choice_B": "Любимый человек",
+        "count_choice_A": 0,
+        "count_choice_B": 0,
+        "count_total": 0,
+        "count_likes": 0,
+        "count_dislikes": 0,
+        "comments": [],
+        "author_id": 1,
+        "creation_date": "2025-03-04T16:59:05.265795",
+        "moderation_date": "2025-03-04T16:59:05.265829",
+        "active_status": true
+    }
+]
\ No newline at end of file
diff --git a/app/tools/data/dirty_words.py b/app/tools/data/dirty_words.py
new file mode 100644
index 0000000..8064150
--- /dev/null
+++ b/app/tools/data/dirty_words.py
@@ -0,0 +1 @@
+dirty_words_set = set(["6ля","6лядь","6лять","b3ъeб","cock","cunt","e6aль","ebal","eblan","eбaл","eбaть","eбyч","eбать","eбёт","eблантий","fuck","fucker","fucking","xyёв","xyй","xyя","xуе,xуй","xую","zaeb","zaebal","zaebali","zaebat","архипиздрит","ахуел","ахуеть","бздение","бздеть","бздех","бздецы","бздит","бздицы","бздло","бзднуть","бздун","бздунья","бздюха","бздюшка","бздюшко","бля","блябу","блябуду","бляд","бляди","блядина","блядище","блядки","блядовать","блядство","блядун","блядуны","блядунья","блядь","блядюга","блять","вафел","вафлёр","взъебка","взьебка","взьебывать","въеб","въебался","въебенн","въебусь","въебывать","выблядок","выблядыш","выеб","выебать","выебен","выебнулся","выебон","выебываться","выпердеть","высраться","выссаться","вьебен","гавно","гавнюк","гавнючка","гамно","гандон","гнид","гнида","гниды","говенка","говенный","говешка","говназия","говнецо","говнище","говно","говноед","говнолинк","говночист","говнюк","говнюха","говнядина","говняк","говняный","говнять","гондон","доебываться","долбоеб","долбоёб","долбоящер","дрисня","дрист","дристануть","дристать","дристун","дристуха","дрочелло","дрочена","дрочила","дрочилка","дрочистый","дрочить","дрочка","дрочун","е6ал","е6ут","еб твою мать","ёб твою мать","ёбaн","ебaть","ебyч","ебал","ебало","ебальник","ебан","ебанамать","ебанат","ебаная","ёбаная","ебанический","ебанный","ебанныйврот","ебаное","ебануть","ебануться","ёбаную","ебаный","ебанько","ебарь","ебат","ёбат","ебатория","ебать","ебать-копать","ебаться","ебашить","ебёна","ебет","ебёт","ебец","ебик","ебин","ебись","ебическая","ебки","ебла","еблан","ебливый","еблище","ебло","еблыст","ебля","ёбн","ебнуть","ебнуться","ебня","ебошить","ебская","ебский","ебтвоюмать","ебун","ебут","ебуч","ебуче","ебучее","ебучий","ебучим","ебущ","ебырь","елда","елдак","елдачить","жопа","жопу","заговнять","задрачивать","задристать","задрота","зае6","заё6","заеб","заёб","заеба","заебал","заебанец","заебастая","заебастый","заебать","заебаться","заебашить","заебистое","заёбистое","заебистые","заёбистые","заебистый","заёбистый","заебись","заебошить","заебываться","залуп","залупа","залупаться","залупить","залупиться","замудохаться","запиздячить","засерать","засерун","засеря","засирать","засрун","захуячить","заябестая","злоеб","злоебучая","злоебучее","злоебучий","ибанамат","ибонех","изговнять","изговняться","изъебнуться","ипать","ипаться","ипаццо","Какдвапальцаобоссать","конча","курва","курвятник","лох","лошарa","лошара","лошары","лошок","лярва","малафья","манда","мандавошек","мандавошка","мандавошки","мандей","мандень","мандеть","мандища","мандой","манду","мандюк","минет","минетчик","минетчица","млять","мокрощелка","мокрощёлка","мразь","мудak","мудaк","мудаг","мудак","муде","мудель","мудеть","муди","мудил","мудила","мудистый","мудня","мудоеб","мудозвон","мудоклюй","на хер","на хуй","набздел","набздеть","наговнять","надристать","надрочить","наебать","наебет","наебнуть","наебнуться","наебывать","напиздел","напиздели","напиздело","напиздили","насрать","настопиздить","нахер","нахрен","нахуй","нахуйник","не ебет","не ебёт","невротебучий","невъебенно","нехира","нехрен","Нехуй","нехуйственно","ниибацо","ниипацца","ниипаццо","ниипет","никуя","нихера","нихуя","обдристаться","обосранец","обосрать","обосцать","обосцаться","обсирать","объебос","обьебать обьебос","однохуйственно","опездал","опизде","опизденивающе","остоебенить","остопиздеть","отмудохать","отпиздить","отпиздячить","отпороть","отъебись","охуевательский","охуевать","охуевающий","охуел","охуенно","охуеньчик","охуеть","охуительно","охуительный","охуяньчик","охуячивать","охуячить","очкун","падла","падонки","падонок","паскуда","педерас","педик","педрик","педрила","педрилло","педрило","педрилы","пездень","пездит","пездишь","пездо","пездят","пердануть","пердеж","пердение","пердеть","пердильник","перднуть","пёрднуть","пердун","пердунец","пердунина","пердунья","пердуха","пердь","переёбок","пернуть","пёрнуть","пи3д","пи3де","пи3ду","пиzдец","пидар","пидарaс","пидарас","пидарасы","пидары","пидор","пидорасы","пидорка","пидорок","пидоры","пидрас","пизда","пиздануть","пиздануться","пиздарваньчик","пиздато","пиздатое","пиздатый","пизденка","пизденыш","пиздёныш","пиздеть","пиздец","пиздит","пиздить","пиздиться","пиздишь","пиздища","пиздище","пиздобол","пиздоболы","пиздобратия","пиздоватая","пиздоватый","пиздолиз","пиздонутые","пиздорванец","пиздорванка","пиздострадатель","пизду","пиздуй","пиздун","пиздунья","пизды","пиздюга","пиздюк","пиздюлина","пиздюля","пиздят","пиздячить","писбшки","писька","писькострадатель","писюн","писюшка","по хуй","по хую","подговнять","подонки","подонок","подъебнуть","подъебнуться","поебать","поебень","поёбываает","поскуда","посрать","потаскуха","потаскушка","похер","похерил","похерила","похерили","похеру","похрен","похрену","похуй","похуист","похуистка","похую","придурок","приебаться","припиздень","припизднутый","припиздюлина","пробзделся","проблядь","проеб","проебанка","проебать","промандеть","промудеть","пропизделся","пропиздеть","пропиздячить","раздолбай","разхуячить","разъеб","разъеба","разъебай","разъебать","распиздай","распиздеться","распиздяй","распиздяйство","распроеть","сволота","сволочь","сговнять","секель","серун","серька","сестроеб","сикель","сила","сирать","сирывать","соси","спиздел","спиздеть","спиздил","спиздила","спиздили","спиздит","спиздить","срака","сраку","сраный","сранье","срать","срун","ссака","ссышь","стерва","страхопиздище","сука","суки","суходрочка","сучара","сучий","сучка","сучко","сучонок","сучье","сцание","сцать","сцука","сцуки","сцуконах","сцуль","сцыха","сцышь","съебаться","сыкун","трахае6","трахаеб","трахаёб","трахатель","ублюдок","уебать","уёбища","уебище","уёбище","уебищное","уёбищное","уебк","уебки","уёбки","уебок","уёбок","урюк","усраться","ушлепок","х_у_я_р_а","хyё","хyй","хyйня","хамло","хер","херня","херовато","херовина","херовый","хитровыебанный","хитрожопый","хуeм","хуе","хуё","хуевато","хуёвенький","хуевина","хуево","хуевый","хуёвый","хуек","хуёк","хуел","хуем","хуенч","хуеныш","хуенький","хуеплет","хуеплёт","хуепромышленник","хуерик","хуерыло","хуесос","хуесоска","хуета","хуетень","хуею","хуи","хуй","хуйком","хуйло","хуйня","хуйрик","хуище","хуля","хую","хуюл","хуя","хуяк","хуякать","хуякнуть","хуяра","хуясе","хуячить","целка","чмо","чмошник","чмырь","шалава","шалавой","шараёбиться","шлюха","шлюхой","шлюшка","ябывает"])
\ No newline at end of file
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..c21f383
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,34 @@
+version: '3.8'
+
+services:
+  mongodb:
+    image: mongodb/mongodb-community-server
+    container_name: tort-mongodb
+    restart: always
+    network_mode: bridge
+    environment:
+      MONGO_INITDB_ROOT_USERNAME: ${MONGO_USER}
+      MONGO_INITDB_ROOT_PASSWORD: ${MONGO_PASS}
+    ports:
+      - "127.0.0.1:${MONGO_PORT}:27017"
+    healthcheck:
+      test: ["CMD", "mongosh", "--username", "${MONGO_USER}", "--password", "${MONGO_PASS}", "--eval", "db.runCommand({ ping: 1 })"]
+      interval: 10s
+      timeout: 5s
+      retries: 2
+
+  backend:
+    build:
+      context: ./app
+    image: tort-backend:latest
+    depends_on:
+      mongodb:
+        condition: service_healthy
+    container_name: tort-backend
+    network_mode: "host"
+    environment:
+      MONGO_HOST: ${MONGO_HOST}
+      MONGO_PORT: ${MONGO_PORT}
+      MONGO_USER: ${MONGO_USER}
+      MONGO_PASS: ${MONGO_PASS}
+
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index 8f61843..0000000
--- a/requirements.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-fastapi==0.115.7
-pymongo==4.10.1