From e19e971cd6da50640eda9d8a8933c6428134863e Mon Sep 17 00:00:00 2001
From: Mireya Cueto Garrido <mireya.cueto.0806@fernando3martos.com>
Date: Fri, 27 Mar 2026 11:16:44 +0100
Subject: [PATCH] =?UTF-8?q?Backend=20totalmente=20hecho=20con=20mongodb,?=
 =?UTF-8?q?=20a=C3=B1adida=20la=20funcionalidad=20de=20usuarios=20con=20hi?=
 =?UTF-8?q?storial?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 backend/api/database/__init__.py   |  0
 backend/api/database/connection.py | 18 ------
 backend/api/database/init_db.py    |  5 --
 backend/api/database/models.py     | 14 -----
 backend/api/database/mongodb.py    |  9 +++
 backend/api/database/session.py    | 15 -----
 backend/api/main.py                | 18 +++---
 backend/api/models/user_models.py  | 44 +++++++++++++++
 backend/api/routers/auth.py        | 89 ++++++++++++++++++++++++++++++
 backend/api/routers/history.py     | 62 +++++++++++++++++++++
 backend/api/routers/test_db.py     | 13 -----
 backend/api/routers/test_mongo.py  | 12 ++++
 backend/api/utils/security.py      | 16 ++++++
 backend/requirements.txt           |  7 ++-
 docker-compose.yaml                | 19 ++-----
 15 files changed, 252 insertions(+), 89 deletions(-)
 delete mode 100644 backend/api/database/__init__.py
 delete mode 100644 backend/api/database/connection.py
 delete mode 100644 backend/api/database/init_db.py
 delete mode 100644 backend/api/database/models.py
 create mode 100644 backend/api/database/mongodb.py
 delete mode 100644 backend/api/database/session.py
 create mode 100644 backend/api/models/user_models.py
 create mode 100644 backend/api/routers/auth.py
 create mode 100644 backend/api/routers/history.py
 delete mode 100644 backend/api/routers/test_db.py
 create mode 100644 backend/api/routers/test_mongo.py
 create mode 100644 backend/api/utils/security.py

diff --git a/backend/api/database/__init__.py b/backend/api/database/__init__.py
deleted file mode 100644
index e69de29..0000000
diff --git a/backend/api/database/connection.py b/backend/api/database/connection.py
deleted file mode 100644
index 640fac4..0000000
--- a/backend/api/database/connection.py
+++ /dev/null
@@ -1,18 +0,0 @@
-import os
-from sqlalchemy import create_engine
-
-DB_USER = "root"
-DB_PASSWORD = "root"
-DB_HOST = "db"
-DB_PORT = "3306"
-DB_NAME = "deckofcards"
-
-DATABASE_URL = (
-    f"mysql+pymysql://{DB_USER}:{DB_PASSWORD}@{DB_HOST}:{DB_PORT}/{DB_NAME}"
-)
-
-engine = create_engine(
-    DATABASE_URL,
-    pool_pre_ping=True,
-    echo=False
-)
diff --git a/backend/api/database/init_db.py b/backend/api/database/init_db.py
deleted file mode 100644
index 4fd4e1f..0000000
--- a/backend/api/database/init_db.py
+++ /dev/null
@@ -1,5 +0,0 @@
-from .connection import engine
-from .models import Base
-
-def init_db():
-    Base.metadata.create_all(bind=engine)
diff --git a/backend/api/database/models.py b/backend/api/database/models.py
deleted file mode 100644
index 6674aab..0000000
--- a/backend/api/database/models.py
+++ /dev/null
@@ -1,14 +0,0 @@
-from sqlalchemy.orm import declarative_base
-from sqlalchemy import Column, Integer, String, Float
-
-Base = declarative_base()
-
-class DoCMFLevel(Base):
-    __tablename__ = "docmf_levels"
-
-    id = Column(Integer, primary_key=True, index=True)
-    term = Column(String(50), nullable=False)
-    core_a = Column(Float, nullable=False)
-    core_b = Column(Float, nullable=False)
-    support_c = Column(Float, nullable=False)
-    support_d = Column(Float, nullable=False)
diff --git a/backend/api/database/mongodb.py b/backend/api/database/mongodb.py
new file mode 100644
index 0000000..fbe5848
--- /dev/null
+++ b/backend/api/database/mongodb.py
@@ -0,0 +1,9 @@
+from motor.motor_asyncio import AsyncIOMotorClient
+
+MONGO_URL = "mongodb://mongo:27017"
+DB_NAME = "deckofcards"
+
+client = AsyncIOMotorClient(MONGO_URL)
+db = client[DB_NAME]
+
+users_collection = db["users"]
diff --git a/backend/api/database/session.py b/backend/api/database/session.py
deleted file mode 100644
index 9ba837b..0000000
--- a/backend/api/database/session.py
+++ /dev/null
@@ -1,15 +0,0 @@
-from sqlalchemy.orm import sessionmaker
-from .connection import engine
-
-SessionLocal = sessionmaker(
-    autocommit=False,
-    autoflush=False,
-    bind=engine
-)
-
-def get_db():
-    db = SessionLocal()
-    try:
-        yield db
-    finally:
-        db.close()
diff --git a/backend/api/main.py b/backend/api/main.py
index 897ab2e..1edd7e5 100644
--- a/backend/api/main.py
+++ b/backend/api/main.py
@@ -1,23 +1,24 @@
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
 from contextlib import asynccontextmanager
-
-from api.database.init_db import init_db
+from api.database.mongodb import db
 
 # Routers
-from api.routers.test_db import router as test_db_router
+from api.routers.test_mongo import router as test_mongo_router
 from api.routers.value_function import router as value_router
 from api.routers.docmf_build import router as docmf_build_router
 from api.routers.docmf_evaluate import router as docmf_eval_router
 from api.routers.docmf_simple_validation import router as simple_validation_router
 from api.routers.docmf_validation import router as validation_router
-
+from api.routers.auth import router as auth_router
+from api.routers.history import router as history_router
+from api.routers.test_mongo import router as test_mongo_router
 
 @asynccontextmanager
 async def lifespan(app: FastAPI):
-    init_db()
+    # Aquí podrías hacer comprobaciones si quieres
     yield
-
+    # No hace falta cerrar nada con Motor
 
 app = FastAPI(lifespan=lifespan)
 
@@ -29,9 +30,12 @@ app.add_middleware(
     allow_headers=["*"],
 )
 
-app.include_router(test_db_router, prefix="/api")
+app.include_router(test_mongo_router, prefix="/api")
 app.include_router(value_router, prefix="/api/criteria/doc")
 app.include_router(docmf_build_router, prefix="/api/criteria/doc-mf")
 app.include_router(docmf_eval_router, prefix="/api/criteria/doc-mf")
 app.include_router(simple_validation_router, prefix="/api/criteria/doc-mf")
 app.include_router(validation_router, prefix="/api/criteria/doc-mf")
+app.include_router(test_mongo_router, prefix="/api")
+app.include_router(auth_router, prefix="/api")
+app.include_router(history_router, prefix="/api")
\ No newline at end of file
diff --git a/backend/api/models/user_models.py b/backend/api/models/user_models.py
new file mode 100644
index 0000000..c611c6f
--- /dev/null
+++ b/backend/api/models/user_models.py
@@ -0,0 +1,44 @@
+from typing import List, Optional
+from pydantic import BaseModel, EmailStr, Field
+from datetime import datetime
+
+
+class FuzzyTerm(BaseModel):
+    term: str
+    core: List[float]
+    support: List[float]
+    left_nodes: List[List[float]]
+    right_nodes: List[List[float]]
+
+
+class HistoryItem(BaseModel):
+    id: Optional[str] = Field(default=None, alias="_id")
+    name: str
+    created_at: datetime
+    results: List[FuzzyTerm]
+
+
+class HistoryCreateRequest(BaseModel):
+    name: str
+    results: List[FuzzyTerm]
+
+
+class UserCreate(BaseModel):
+    username: str
+    email: EmailStr
+    password: str
+
+
+class UserLogin(BaseModel):
+    email: EmailStr
+    password: str
+
+
+class UserInDB(BaseModel):
+    id: Optional[str] = Field(default=None, alias="_id")
+    username: str
+    email: EmailStr
+    password_hash: str
+    token: Optional[str] = None
+    history: List[HistoryItem] = []
+
diff --git a/backend/api/routers/auth.py b/backend/api/routers/auth.py
new file mode 100644
index 0000000..2287379
--- /dev/null
+++ b/backend/api/routers/auth.py
@@ -0,0 +1,89 @@
+from fastapi import APIRouter, HTTPException, status
+from api.database.mongodb import users_collection
+from api.models.user_models import UserCreate, UserLogin
+from api.utils.security import hash_password, verify_password, generate_token
+from bson import ObjectId
+
+router = APIRouter(prefix="/auth", tags=["auth"])
+
+
+@router.post("/register")
+async def register_user(user: UserCreate):
+    existing_username = await users_collection.find_one({"username": user.username})
+    if existing_username:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="El nombre de usuario ya está en uso",
+        )
+
+    existing_email = await users_collection.find_one({"email": user.email})
+    if existing_email:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="El email ya está registrado",
+        )
+
+    token = generate_token()
+
+    user_doc = {
+        "username": user.username,
+        "email": user.email,
+        "password_hash": hash_password(user.password),
+        "token": token,
+        "history": [],
+    }
+
+    result = await users_collection.insert_one(user_doc)
+
+    return {
+        "message": "Usuario registrado correctamente",
+        "user_id": str(result.inserted_id),
+        "token": token,
+    }
+
+
+@router.post("/login")
+async def login_user(credentials: UserLogin):
+    user = await users_collection.find_one({"email": credentials.email})
+    if not user:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Credenciales inválidas",
+        )
+
+    if not verify_password(credentials.password, user["password_hash"]):
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Credenciales inválidas",
+        )
+
+    new_token = generate_token()
+
+    await users_collection.update_one(
+        {"_id": user["_id"]},
+        {"$set": {"token": new_token}}
+    )
+
+    return {
+        "message": "Login correcto",
+        "user_id": str(user["_id"]),
+        "username": user["username"],
+        "token": new_token,
+    }
+
+
+@router.post("/logout/{user_id}")
+async def logout_user(user_id: str):
+    user = await users_collection.find_one({"_id": ObjectId(user_id)})
+    if not user:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Usuario no encontrado",
+        )
+
+    await users_collection.update_one(
+        {"_id": ObjectId(user_id)},
+        {"$set": {"token": None}}
+    )
+
+    return {"message": "Sesión cerrada correctamente"}
diff --git a/backend/api/routers/history.py b/backend/api/routers/history.py
new file mode 100644
index 0000000..fadd769
--- /dev/null
+++ b/backend/api/routers/history.py
@@ -0,0 +1,62 @@
+from fastapi import APIRouter, HTTPException, status
+from typing import List
+from datetime import datetime
+from bson import ObjectId
+
+from api.database.mongodb import users_collection
+from api.models.user_models import FuzzyTerm, HistoryCreateRequest
+
+router = APIRouter(prefix="/history", tags=["history"])
+
+
+@router.post("/{user_id}/add")
+async def add_history_item(user_id: str, data: HistoryCreateRequest):
+    user = await users_collection.find_one({"_id": ObjectId(user_id)})
+    if not user:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Usuario no encontrado",
+        )
+
+    history_item_id = ObjectId()
+
+    history_item = {
+        "_id": history_item_id,
+        "name": data.name,  # ← nuevo campo
+        "created_at": datetime.utcnow(),
+        "results": [r.dict() for r in data.results],
+    }
+
+    await users_collection.update_one(
+        {"_id": ObjectId(user_id)},
+        {"$push": {"history": history_item}},
+    )
+
+    return {
+        "message": "Elemento añadido al historial",
+        "history_item_id": str(history_item_id),
+    }
+
+
+
+@router.delete("/{user_id}/delete/{history_item_id}")
+async def delete_history_item(user_id: str, history_item_id: str):
+    user = await users_collection.find_one({"_id": ObjectId(user_id)})
+    if not user:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Usuario no encontrado",
+        )
+
+    result = await users_collection.update_one(
+        {"_id": ObjectId(user_id)},
+        {"$pull": {"history": {"_id": ObjectId(history_item_id)}}},
+    )
+
+    if result.modified_count == 0:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Elemento de historial no encontrado",
+        )
+
+    return {"message": "Elemento eliminado del historial"}
diff --git a/backend/api/routers/test_db.py b/backend/api/routers/test_db.py
deleted file mode 100644
index d554bfd..0000000
--- a/backend/api/routers/test_db.py
+++ /dev/null
@@ -1,13 +0,0 @@
-from fastapi import APIRouter, Depends
-from sqlalchemy import text
-from api.database.session import get_db
-
-router = APIRouter()
-
-@router.get("/test-db")
-def test_db_connection(db=Depends(get_db)):
-    try:
-        db.execute(text("SELECT 1"))
-        return {"status": "ok", "message": "Conexión a MySQL correcta"}
-    except Exception as e:
-        return {"status": "error", "message": str(e)}
diff --git a/backend/api/routers/test_mongo.py b/backend/api/routers/test_mongo.py
new file mode 100644
index 0000000..43dd15d
--- /dev/null
+++ b/backend/api/routers/test_mongo.py
@@ -0,0 +1,12 @@
+from fastapi import APIRouter
+from api.database.mongodb import db
+
+router = APIRouter()
+
+@router.get("/test-mongo")
+async def test_mongo():
+    try:
+        await db.command("ping")
+        return {"status": "ok", "message": "Conexión a MongoDB correcta"}
+    except Exception as e:
+        return {"status": "error", "message": str(e)}
diff --git a/backend/api/utils/security.py b/backend/api/utils/security.py
new file mode 100644
index 0000000..6dd73c5
--- /dev/null
+++ b/backend/api/utils/security.py
@@ -0,0 +1,16 @@
+import secrets
+from passlib.context import CryptContext
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+
+
+def hash_password(password: str) -> str:
+    return pwd_context.hash(password)
+
+
+def verify_password(plain_password: str, hashed_password: str) -> bool:
+    return pwd_context.verify(plain_password, hashed_password)
+
+
+def generate_token() -> str:
+    return secrets.token_hex(32)  # 64 caracteres seguros
diff --git a/backend/requirements.txt b/backend/requirements.txt
index bf665b8..26ebe6e 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -1,6 +1,7 @@
 fastapi
 uvicorn
-sqlalchemy
-pymysql
+motor
 pydantic
-cryptography
\ No newline at end of file
+passlib
+bcrypt==4.0.1
+email-validator
diff --git a/docker-compose.yaml b/docker-compose.yaml
index 2d3b0f5..f0fa360 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -11,12 +11,6 @@ services:
       - ./backend:/app
     depends_on:
       - db
-    environment:
-      DB_HOST: db
-      DB_PORT: 3306
-      DB_USER: root
-      DB_PASSWORD: root
-      DB_NAME: deckofcards
 
   frontend:
     build:
@@ -29,16 +23,13 @@ services:
       - /app/node_modules
 
   db:
-    image: mysql:8.0
-    container_name: mysql_db
+    image: mongo:6
+    container_name: mongo
     restart: always
-    environment:
-      MYSQL_ROOT_PASSWORD: root
-      MYSQL_DATABASE: deckofcards
     ports:
-      - "3306:3306"
+      - "27018:27017"
     volumes:
-      - mysql_data:/var/lib/mysql
+      - mongo_data:/data/db
 
 volumes:
-  mysql_data:
\ No newline at end of file
+  mongo_data: