199 lines
8.1 KiB
Python
199 lines
8.1 KiB
Python
from sqlalchemy import insert, select, update, delete
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from fastapi import HTTPException, Depends, status
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from fastapi.security import OAuth2PasswordBearer
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from models.schemas import Role, TokenData, Permission
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from models.db import roles_table, permissions_table, role_permissions_table, users_table
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from config.database import get_db
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from config.settings import settings
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from jose import jwt, JWTError
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from sqlalchemy.ext.asyncio import AsyncSession
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oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/token")
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class RoleService:
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@staticmethod
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async def get_all_roles(db: AsyncSession):
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query = select(roles_table)
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result = await db.execute(query)
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roles = result.mappings().all()
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# Inclure les permissions pour chaque rôle
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roles_with_permissions = []
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for role in roles:
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permissions_query = (
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select(permissions_table.c.name)
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.join(role_permissions_table, permissions_table.c.id == role_permissions_table.c.permission_id)
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.where(role_permissions_table.c.role_id == role['id'])
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)
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permissions_result = await db.execute(permissions_query)
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permissions = [p["name"] for p in permissions_result]
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role_data = dict(role)
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role_data["permissions"] = permissions
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roles_with_permissions.append(role_data)
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return roles_with_permissions
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@staticmethod
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async def create_role(name: str, permissions: list, db, token: str):
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"""
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Crée un nouveau rôle avec les permissions spécifiées (réservé aux administrateurs).
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"""
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await RoleService.admin_required(token, db)
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# Vérifier que les permissions sont valides
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valid_permissions = settings.available_permissions
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filtered_permissions = [p for p in permissions if p in valid_permissions]
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if not filtered_permissions:
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raise HTTPException(status_code=400, detail="No valid permissions provided.")
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# Insérer le rôle
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query = insert(roles_table).values(name=name)
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try:
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result = await db.execute(query)
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await db.commit()
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role_id = result.inserted_primary_key[0]
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# Associer les permissions valides au rôle
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for permission in filtered_permissions:
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permission_query = select(permissions_table).where(permissions_table.c.name == permission)
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permission_result = await db.execute(permission_query)
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permission_record = permission_result.fetchone()
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if permission_record:
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insert_query = insert(role_permissions_table).values(
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role_id=role_id, permission_id=permission_record['id']
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)
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await db.execute(insert_query)
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await db.commit()
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return {"id": role_id, "name": name, "permissions": filtered_permissions}
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except Exception as e:
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await db.rollback()
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raise HTTPException(status_code=500, detail=f"Could not create role: {str(e)}")
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@staticmethod
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async def update_role(role_id: int, data: dict, db: AsyncSession, token: str):
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"""
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Met à jour un rôle par son ID (réservé aux administrateurs).
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"""
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await RoleService.admin_required(token, db)
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if "permissions" in data:
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# Supprimer les anciennes permissions
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delete_query = delete(role_permissions_table).where(role_permissions_table.c.role_id == role_id)
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await db.execute(delete_query)
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# Ajouter les nouvelles permissions
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for permission in data["permissions"]:
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permission_query = select(permissions_table).where(permissions_table.c.name == permission)
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permission_result = await db.execute(permission_query)
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permission_record = permission_result.fetchone()
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if not permission_record:
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raise HTTPException(status_code=400, detail=f"Permission '{permission}' not found")
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insert_query = insert(role_permissions_table).values(
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role_id=role_id, permission_id=permission_record['id']
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)
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await db.execute(insert_query)
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await db.commit()
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# Mettre à jour les autres champs du rôle
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role_update_data = {key: value for key, value in data.items() if key != "permissions"}
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if role_update_data:
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query = (
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update(roles_table)
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.where(roles_table.c.id == role_id)
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.values(**role_update_data)
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)
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try:
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result = await db.execute(query)
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if result.rowcount == 0:
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raise HTTPException(status_code=404, detail="Role not found")
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await db.commit()
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return {"message": "Role updated successfully"}
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except Exception as e:
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await db.rollback()
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raise HTTPException(status_code=500, detail=f"Could not update role: {str(e)}")
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return {"message": "Role updated successfully"}
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@staticmethod
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async def delete_role(role_id: int, db: AsyncSession, token: str):
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"""
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Supprime un rôle par son ID (réservé aux administrateurs).
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"""
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await RoleService.admin_required(token, db)
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query = delete(roles_table).where(roles_table.c.id == role_id)
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try:
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result = await db.execute(query)
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if result.rowcount == 0:
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raise HTTPException(status_code=404, detail="Role not found")
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await db.commit()
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return {"message": "Role deleted successfully"}
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except Exception as e:
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await db.rollback()
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raise HTTPException(status_code=500, detail=f"Could not delete role: {str(e)}")
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@staticmethod
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async def admin_required(token: str = Depends(oauth2_scheme), db: AsyncSession = Depends(get_db)):
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"""
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Vérifie si l'utilisateur actuel est un administrateur.
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"""
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credentials_exception = HTTPException(
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status_code=status.HTTP_403_FORBIDDEN,
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detail="You do not have permission to perform this action.",
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)
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try:
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# Décodage du token JWT
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payload = jwt.decode(token, settings.secret_key, algorithms=[settings.algorithm])
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email: str = payload.get("sub")
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if email is None:
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raise credentials_exception
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token_data = TokenData(email=email)
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except JWTError:
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raise credentials_exception
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# Récupère l'utilisateur depuis la base de données
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user_query = select(users_table).where(users_table.c.email == token_data.email)
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result = await db.execute(user_query)
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user = result.fetchone()
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if user is None:
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raise credentials_exception
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# Vérifie si l'utilisateur a le rôle d'administrateur
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if user["role"] != "admin":
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raise credentials_exception
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return user
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@staticmethod
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async def get_all_permissions():
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"""
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Récupère toutes les permissions définies dans les paramètres (settings).
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"""
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return settings.available_permissions
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@staticmethod
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async def get_role(role_id: int, db):
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"""
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Récupère les détails d'un rôle spécifique, y compris ses permissions associées.
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"""
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query = select(roles_table).where(roles_table.c.id == role_id)
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result = await db.execute(query)
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role = result.fetchone()
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if not role:
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raise HTTPException(status_code=404, detail="Role not found")
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# Récupérer les permissions associées au rôle
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permissions_query = (
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select(permissions_table.c.name)
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.join(role_permissions_table, role_permissions_table.c.permission_id == permissions_table.c.id)
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.where(role_permissions_table.c.role_id == role_id)
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)
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permissions_result = await db.execute(permissions_query)
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permissions = [row["name"] for row in permissions_result]
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return {"id": role["id"], "name": role["name"], "permissions": permissions}
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