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

backend/app/forms/reservation.py

@@ -0,0 +1,49 @@
+from flask_wtf import FlaskForm
+from wtforms import SelectField, StringField, TextAreaField, IntegerField, SubmitField, DateTimeLocalField
+from wtforms.validators import DataRequired, Length, NumberRange, Optional, ValidationError
+from flask_babel import lazy_gettext as _l
+from datetime import datetime, timedelta
+
+class ReservationForm(FlaskForm):
+    classroom_id = SelectField(_l('Classroom'), coerce=int, validators=[DataRequired()])
+    commission_id = SelectField(_l('Commission/Subject'), coerce=int, validators=[DataRequired()])
+    start_time = DateTimeLocalField(_l('Start Time'), format='%Y-%m-%dT%H:%M', validators=[DataRequired()])
+    end_time = DateTimeLocalField(_l('End Time'), format='%Y-%m-%dT%H:%M', validators=[DataRequired()])
+    purpose = StringField(_l('Purpose'), validators=[
+        DataRequired(),
+        Length(min=3, max=500)
+    ])
+    expected_attendees = IntegerField(_l('Expected Attendees'), validators=[
+        DataRequired(),
+        NumberRange(min=1, max=500)
+    ])
+    notes = TextAreaField(_l('Notes'), validators=[
+        Optional(),
+        Length(max=1000)
+    ])
+    virtual_link = StringField(_l('Virtual Classroom Link'), validators=[
+        Optional(),
+        Length(max=500)
+    ])
+    submit = SubmitField(_l('Make Reservation'))
+    
+    def __init__(self, *args, is_edit=False, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.is_edit = is_edit
+    
+    def validate_end_time(self, field):
+        if field.data <= self.start_time.data:
+            raise ValidationError('End time must be after start time.')
+        
+        # Check if duration is reasonable (max 8 hours)
+        if field.data > self.start_time.data + timedelta(hours=8):
+            raise ValidationError('Reservation cannot exceed 8 hours.')
+    
+    def validate_start_time(self, field):
+        # Don't allow new reservations in the past
+        if not self.is_edit and field.data < datetime.now() - timedelta(minutes=10):
+            raise ValidationError('Start time cannot be in the past.')
+        
+        # Don't allow reservations too far in the future (max 3 months)
+        if field.data > datetime.now() + timedelta(days=90):
+            raise ValidationError('Reservations cannot be made more than 3 months in advance.')