feat: implementacion de dashboards por rol, soporte de clases virtuales concurrentes en importador de sheets y cartelera del dia

backend/app/services/classroom_service.py

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+from typing import Optional, List, Dict, Any
+import re
+from sqlalchemy import func
+from app.models.classroom import Classroom
+from app.models.building import Building
+from app.repositories.classroom_repository import ClassroomRepository
+from app.schemas.classroom_dto import ClassroomCreateDTO, ClassroomUpdateDTO
+from app import db
+
+class ClassroomService:
+    """Capa de servicios para la lógica de negocio y validación de aulas."""
+
+    def __init__(self, repository: Optional[ClassroomRepository] = None):
+        self.repository = repository or ClassroomRepository()
+
+    def get_classroom(self, classroom_id: int) -> Optional[Classroom]:
+        """Obtiene un aula por su identificador."""
+        return self.repository.get_by_id(classroom_id)
+
+    def list_classrooms(self, building_id: Optional[int] = None, floor: Optional[str] = None,
+                        only_virtual: bool = False, only_physical: bool = False) -> List[Classroom]:
+        """Lista aulas filtradas según criterios de ubicación o modalidad."""
+        return self.repository.get_active_classrooms(
+            building_id=building_id,
+            floor=floor,
+            only_virtual=only_virtual,
+            only_physical=only_physical
+        )
+
+    def create_classroom(self, dto: ClassroomCreateDTO) -> Classroom:
+        """
+        Crea una nueva aula aplicando reglas de negocio:
+        - Resolución o creación dinámica del edificio.
+        - Unicidad de código por piso y edificio.
+        - Capacidad adaptativa para aulas virtuales.
+        """
+        building = None
+        if dto.building_id:
+            building = Building.query.get(dto.building_id)
+            if not building:
+                raise ValueError(f"El edificio con ID {dto.building_id} no existe.")
+        elif dto.building_name:
+            b_name = dto.building_name.strip()
+            building = Building.query.filter(func.lower(Building.name) == func.lower(b_name)).first()
+            if not building:
+                code_slug = re.sub(r'[^a-zA-Z0-9]+', '_', b_name.upper()).strip('_')
+                building = Building(name=b_name, code=code_slug, is_active=True)
+                db.session.add(building)
+                db.session.flush()
+        else:
+            raise ValueError("Debe especificar un edificio válido o el nombre de un nuevo edificio.")
+
+        # Verificar unicidad
+        existing = self.repository.get_by_code_and_building(building.id, dto.code, dto.floor)
+        if existing:
+            raise ValueError(f"Ya existe un aula con el código '{dto.code}' en el piso {dto.floor} de {building.name}.")
+
+        capacity = dto.capacity
+        is_virtual = ('VIRTUAL' in dto.code.upper()) or ('VIRTUAL' in building.name.upper())
+        if is_virtual and capacity < 999:
+            capacity = 9999
+
+        classroom = Classroom(
+            building_id=building.id,
+            building=building.name,
+            code=dto.code,
+            floor=dto.floor,
+            capacity=capacity,
+            description=dto.description,
+            is_active=dto.is_active
+        )
+        return self.repository.save(classroom)
+
+    def update_classroom(self, classroom_id: int, dto: ClassroomUpdateDTO) -> Classroom:
+        """Actualiza atributos de un aula existente."""
+        classroom = self.repository.get_by_id(classroom_id)
+        if not classroom:
+            raise ValueError(f"Aula con ID {classroom_id} no encontrada.")
+
+        building_id = dto.building_id if dto.building_id is not None else classroom.building_id
+        code = dto.code.strip() if dto.code is not None else classroom.code
+        floor = dto.floor.strip() if dto.floor is not None else classroom.floor
+
+        # Si cambia código, piso o edificio, validar colisión
+        if (building_id != classroom.building_id or code != classroom.code or floor != classroom.floor):
+            existing = self.repository.get_by_code_and_building(building_id, code, floor)
+            if existing and existing.id != classroom.id:
+                raise ValueError(f"Ya existe otra aula con el código '{code}' en el piso {floor}.")
+
+        if dto.building_id is not None:
+            building = Building.query.get(dto.building_id)
+            if building:
+                classroom.building_id = building.id
+                classroom.building = building.name
+        if dto.code is not None:
+            classroom.code = code
+        if dto.floor is not None:
+            classroom.floor = floor
+        if dto.capacity is not None:
+            classroom.capacity = dto.capacity
+        if dto.description is not None:
+            classroom.description = dto.description
+        if dto.is_active is not None:
+            classroom.is_active = dto.is_active
+
+        return self.repository.save(classroom)
+
+    def delete_classroom(self, classroom_id: int) -> bool:
+        """Elimina o desactiva un aula verificando dependencias."""
+        classroom = self.repository.get_by_id(classroom_id)
+        if not classroom:
+            return False
+        # Si tiene reservas históricas, se desactiva lógicamente para preservar integridad
+        if classroom.reservations:
+            classroom.is_active = False
+            self.repository.save(classroom)
+            return True
+        return self.repository.delete(classroom)