feat: Ajout de la configuration des tarifs de l'école [#18]

Back-End/School/models.py

@@ -3,6 +3,9 @@ from Auth.models import Profile
 from django.db.models import JSONField
 from django.dispatch import receiver
 from django.contrib.postgres.fields import ArrayField
+from django.utils.translation import gettext_lazy as _
+from django.core.exceptions import ValidationError
+
 
 LEVEL_CHOICES = [
     (1, 'Très Petite Section (TPS)'),
@@ -47,7 +50,7 @@ class SchoolClass(models.Model):
     number_of_students = models.PositiveIntegerField(blank=True)
     teaching_language = models.CharField(max_length=255, blank=True)
     school_year = models.CharField(max_length=9, blank=True)
-    updated_date = models.DateTimeField(auto_now_add=True)
+    updated_date = models.DateTimeField(auto_now=True)
     teachers = models.ManyToManyField(Teacher, blank=True)
     levels = ArrayField(models.IntegerField(choices=LEVEL_CHOICES), default=list)
     type = models.IntegerField(choices=PLANNING_TYPE_CHOICES, default=1)
@@ -64,3 +67,56 @@ class Planning(models.Model):
 
     def __str__(self):
         return f'Planning for {self.level} of {self.school_class.atmosphere_name}'
+
+class Discount(models.Model):
+    name = models.CharField(max_length=255, unique=True)
+    amount = models.DecimalField(max_digits=10, decimal_places=2)
+    description = models.TextField(blank=True)
+
+    def __str__(self):
+        return self.name
+
+class Fee(models.Model):
+    name = models.CharField(max_length=255, unique=True)
+    amount = models.DecimalField(max_digits=10, decimal_places=2)
+    description = models.TextField(blank=True)
+
+    def __str__(self):
+        return self.name
+
+class TuitionFee(models.Model):
+    class PaymentOptions(models.IntegerChoices):
+        SINGLE_PAYMENT = 0, _('Paiement en une seule fois')
+        FOUR_TIME_PAYMENT = 1, _('Paiement en 4 fois')
+        TEN_TIME_PAYMENT = 2, _('Paiement en 10 fois')
+
+    name = models.CharField(max_length=255, unique=True)
+    description = models.TextField(blank=True)
+    base_amount = models.DecimalField(max_digits=10, decimal_places=2)
+    currency = models.CharField(max_length=3, default='EUR')
+    discounts = models.ManyToManyField('Discount', blank=True)
+    validity_start_date = models.DateField()
+    validity_end_date = models.DateField()
+    payment_option = models.IntegerField(choices=PaymentOptions, default=PaymentOptions.SINGLE_PAYMENT)
+    is_active = models.BooleanField(default=True)
+    updated_at = models.DateTimeField(auto_now=True)
+
+    def __str__(self):
+        return self.name
+
+    def clean(self):
+        if self.validity_end_date <= self.validity_start_date:
+            raise ValidationError(_('La date de fin de validité doit être après la date de début de validité.'))
+
+    def calculate_final_amount(self):
+        amount = self.base_amount
+
+        # Apply fees (supplements and taxes)
+        # for fee in self.fees.all():
+        #     amount += fee.amount
+
+        # Apply discounts
+        for discount in self.discounts.all():
+            amount -= discount.amount
+
+        return amount