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

backend/app/models/building.py

@@ -0,0 +1,45 @@
+from app import db
+from datetime import datetime
+
+class Building(db.Model):
+    __tablename__ = 'buildings'
+    
+    id = db.Column(db.Integer, primary_key=True)
+    name = db.Column(db.String(100), unique=True, nullable=False, index=True)
+    code = db.Column(db.String(50), unique=True, nullable=True)
+    address = db.Column(db.String(255), nullable=True)
+    floors = db.Column(db.Integer, default=1, nullable=False)
+    description = db.Column(db.Text, nullable=True)
+    is_active = db.Column(db.Boolean, default=True, nullable=False)
+    created_at = db.Column(db.DateTime, default=datetime.utcnow)
+    updated_at = db.Column(db.DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+    
+    # Relationships
+    classrooms = db.relationship('Classroom', backref='building_entity', lazy=True, foreign_keys='Classroom.building_id')
+    
+    @property
+    def total_capacity(self):
+        """Total student capacity across active classrooms in this building"""
+        return sum(c.capacity for c in self.classrooms if c.is_active)
+        
+    @property
+    def classrooms_count(self):
+        """Number of active classrooms"""
+        return len([c for c in self.classrooms if c.is_active])
+        
+    def to_dict(self):
+        return {
+            'id': self.id,
+            'name': self.name,
+            'code': self.code,
+            'address': self.address,
+            'floors': self.floors,
+            'description': self.description,
+            'is_active': self.is_active,
+            'classrooms_count': self.classrooms_count,
+            'total_capacity': self.total_capacity,
+            'created_at': self.created_at.isoformat() if self.created_at else None
+        }
+        
+    def __repr__(self):
+        return f'<Building {self.name}>'