fake charge

apps/core/admin.py

@@ -1,2 +1,4 @@
 from django.contrib import admin
+from .models import Charge
 
+admin.site.register(Charge)

apps/core/forms.py

@@ -0,0 +1,11 @@
+from django import forms
+
+from apps.core.models import Charge
+
+
+class ChargeForm(forms.ModelForm):
+    amount = forms.IntegerField(label='مبلغ', widget=forms.NumberInput(attrs={'class': 'form-control'}), required=True)
+
+    class Meta:
+        model = Charge
+        fields = ('amount',)

apps/core/migrations/0001_initial.py

@@ -0,0 +1,31 @@
+# Generated by Django 5.1.7 on 2025-03-31 10:05
+
+import django.db.models.deletion
+import uuid
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        migrations.swappable_dependency(settings.OAUTH2_PROVIDER_APPLICATION_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Charge',
+            fields=[
+                ('uuid', models.UUIDField(db_index=True, default=uuid.uuid4, primary_key=True, serialize=False, unique=True)),
+                ('created_at', models.DateTimeField(auto_now_add=True, null=True)),
+                ('updated_at', models.DateTimeField(auto_now=True, null=True)),
+                ('state', models.IntegerField(choices=[(1, 'created'), (2, 'delayed'), (3, 'pending'), (4, 'incomplete'), (5, 'success'), (6, 'failed'), (7, 'expected_failure')], default=1)),
+                ('amount', models.PositiveBigIntegerField(blank=True, null=True)),
+                ('application', models.ForeignKey(null=True, on_delete=django.db.models.deletion.PROTECT, related_name='+', to=settings.OAUTH2_PROVIDER_APPLICATION_MODEL)),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+    ]

apps/core/models.py

@@ -1,2 +1,37 @@
+from django.conf import settings
 from django.db import models
+import uuid
 from django.utils.translation import gettext_lazy as _
+from oauth2_provider.settings import oauth2_settings
+from rest_framework.exceptions import APIException
+
+from apps.wallet.constans import StateChoices
+
+
+class Charge(models.Model):
+    uuid = models.UUIDField(primary_key=True, editable=True, default=uuid.uuid4, unique=True,
+                            db_index=True)  # reserve_code
+    created_at = models.DateTimeField(auto_now_add=True, null=True)
+    updated_at = models.DateTimeField(auto_now=True, null=True)
+    application = models.ForeignKey(oauth2_settings.APPLICATION_MODEL, on_delete=models.PROTECT,
+                                    related_name='+', null=True)
+    state = models.IntegerField(choices=StateChoices.choices, default=StateChoices.CREATED)
+    user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.PROTECT)
+    amount = models.PositiveBigIntegerField(null=True, blank=True)
+
+    def change_state(self, from_state, to_state, error_message=None, **data):
+        if self.state == from_state:
+            updated = Charge.objects.filter(pk=self.pk, state=from_state).update(
+                state=to_state,
+                **data
+            )
+            if updated:  # double check in db level
+                self.state = to_state
+            else:
+                raise APIException(error_message)
+        else:
+            raise APIException(error_message)
+
+
+
+

apps/core/serializers.py

@@ -0,0 +1,21 @@
+from rest_framework import serializers
+
+from apps.core.models import Charge
+
+
+class ChargeSerializer(serializers.ModelSerializer):
+    # uuid = serializers.UUIDField(required=True)
+
+    class Meta:
+        model = Charge
+        fields = (
+            'uuid',
+            'user',
+            "created_at",
+            "state",
+            'amount',
+            'updated_at',
+        )
+
+        read_only_fields = ['uuid', 'user','updated_at', 'state', 'created_at', 'amount']
+

apps/core/urls.py

@@ -1,7 +1,10 @@
 from django.urls import path, include
-from .views import HomeView
+from .views import HomeView, ChargeView, ChargeRequestApiView
+
 app_name = "core"
 
 urlpatterns = [
     path('', HomeView.as_view(), name='home'),
+    path('charge/<pk>/', ChargeView.as_view(), name='charge'),
+    path('api/charge_create', ChargeRequestApiView.as_view(), name='charge_create_api'),
 ]

apps/core/views.py

@@ -1,10 +1,74 @@
+from django.contrib import messages
 from django.contrib.auth.decorators import login_required
+from django.http import HttpResponseRedirect
 from django.shortcuts import render
+from django.urls import reverse
 from django.utils.decorators import method_decorator
-from django.views.generic import TemplateView
+from django.views.generic import TemplateView, FormView, UpdateView
+from oauth2_provider.contrib.rest_framework import TokenHasScope, IsAuthenticatedOrTokenHasScope
+from rest_framework import generics
+from rest_framework.views import APIView
+
+from apps.core.forms import ChargeForm
+from apps.core.models import Charge
+from apps.core.serializers import ChargeSerializer
+from apps.wallet.models import Transaction
+
 
 # Create your views here.
 @method_decorator(login_required, name='dispatch')
 class HomeView(TemplateView):
     template_name = 'core/home.html'
 
+
+class ChargeRequestApiView(generics.CreateAPIView):
+    permission_classes = [IsAuthenticatedOrTokenHasScope]
+    serializer_class = ChargeSerializer
+    required_scopes = ['wallet.wallet:get_balance']
+    model = Charge
+
+    def perform_create(self, serializer):
+        user = self.request.user
+        serializer.save(user = user)
+
+
+class ChargeView(UpdateView):
+    template_name = 'core/charge.html'
+    form_class = ChargeForm
+
+    def get_queryset(self):
+        return Charge.objects.all()
+
+    def form_valid(self, form):
+        self.object = form.save()
+        amount = form.cleaned_data['amount']
+        payer_pk = 'a95557d6-4f21-4717-99c2-354db85f940e'
+        charge = self.get_object()
+        transaction = Transaction.objects.create(
+            uuid= charge.uuid,
+            payee_id= charge.user.pk,
+            payee_type=1,
+            payer_id=payer_pk,
+            payer_type=2,
+            amount=amount,
+            details = {'description': 'شارژ مجازی کیف پول'}
+        )
+
+        try:
+            transaction.submit()
+            transaction.verify()
+            messages.success(self.request, 'شارژ انجام شد')
+
+        except:
+            messages.error(self.request, 'خطایی رخ داده است')
+
+        return HttpResponseRedirect(self.get_success_url())
+
+
+
+    def get_success_url(self):
+        return reverse('core:charge', kwargs={'pk': self.object.pk})
+
+    # def form_valid(self, form):
+
+

apps/wallet/models.py

@@ -74,7 +74,8 @@ class Transaction(models.Model):
 
     def withdraw_from_payer_balance(self):
         payer = self.get_payer()
-        if self.amount > payer.balance:
+        payer_is_allowed_negative_balance = self.payer_type==TypeChoices.APPLICATION.value and str(self.payer_id) in settings.ALLOWED_NEGATIVE_BALANCE_APPLICATIONS
+        if self.amount > payer.balance and not payer_is_allowed_negative_balance :
             raise APIException('not enough balance')
         payer.balance = F('balance') - self.amount
         payer.save(update_fields=['balance'])
@@ -249,4 +250,7 @@ class Transaction(models.Model):
 
 
     def __str__(self):
-        return f"{self.get_payer()} -> {self.get_payee()} ({self.uuid}): {self.amount} - {self.get_state_display()}"
+        try:
+            return f"{self.get_payer()} -> {self.get_payee()} ({self.uuid}): {self.amount} - {self.get_state_display()}"
+        except:
+            return str(self.uuid)

templates/base_charge.html

@@ -0,0 +1,108 @@
+{% load static %}
+{#{% load view_breadcrumbs %}#}
+
+
+<!doctype html>
+<html lang="fa-ir" dir="rtl">
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <meta name="description" content="">
+    <title>{% block title %}welcome{% endblock %}</title>
+
+    <link href="{% static 'bootstrap-5.3.0-dist/css/bootstrap.rtl.min.css' %}" rel="stylesheet">
+    <link href="{% static 'bootstrap-icons-1.11.3/font/bootstrap-icons.css' %}" rel="stylesheet">
+    <link href="{% static 'fonts/vazirmatn-v33.003/misc/UI-Farsi-Digits/Vazirmatn-UI-FD-font-face.css' %}"
+          rel="stylesheet">
+    <link href="{% static 'fonts/Pelak/fonts.css' %}" rel="stylesheet">
+    <link href="{% static 'main.css' %}" rel="stylesheet">
+    <script src="{% static 'jquery-3.6.0.min.js' %}"></script>
+
+    {#    <link rel="stylesheet"#}
+    {#          href="https://cdn.jsdelivr.net/npm/select2-bootstrap-5-theme@1.3.0/dist/select2-bootstrap-5-theme.min.css"/>#}
+    <!-- Or for RTL support -->
+    <style>
+        @media (min-width: 576px) {
+            .h-sm-100 {
+                height: 100%;
+            }
+        }
+    </style>
+</head>
+
+
+<body>
+<div class="container-fluid">
+    <div class="row vh-100 overflow-auto">
+        <div class="col d-flex flex-column h-sm-100">
+            <div class="m-0 p-0 w-100 " style="background-color: red; height: 3px;"></div>
+            <main class="row overflow-auto pb-3">
+                <div class="col pt-2">
+                    {% include "include/messages.html" %}
+                    <div class="row">
+                        <div class="col">
+                            <div class="grid">
+                                <div class="d-flex justify-content-start">
+                                    <h4 class="m-3">
+                                        {% block page_title %}
+                                        {% endblock %}
+                                    </h4>
+                                </div>
+                            </div>
+                        </div>
+                        <div class="col">
+                            <div class="grid">
+                                <div class="d-flex justify-content-end mt-2">
+                                    {% block page_action %}
+                                    {% endblock %}
+                                </div>
+                            </div>
+                        </div>
+                    </div>
+
+                    <hr>
+
+                    <div class="row">
+                        <div class="col">
+                            <div class="card bg-light">
+                                <div class="card-body">
+                                    <div class="col-md-12 col-lg-12">
+                                        {% block content %}
+                                        {% endblock %}
+                                    </div>
+                                </div>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+            </main>
+
+            <footer class="row bg-light py-3 mt-auto small">
+                <div class="d-flex">
+                    <div class="flex-grow-1">
+                        کلیه حقوق متعلق به
+                        <a class="text-decoration-none" href="/">addwin</a>
+                        است.
+                    </div>
+{#                    <div class="">#}
+{#                        توسعه#}
+{#                        <a href="https://gooyal.com" class="text-decoration-none" target="_blank"#}
+{#                           rel="noopener noreferrer">#}
+{#                            گویال#}
+{#                            <img src="{% static 'image/gooyal_logo_gray.png' %}" width="28" height="21">#}
+{#                        </a>#}
+{#                    </div>#}
+                </div>
+            </footer>
+        </div>
+    </div>
+</div>
+</body>
+
+<script>
+    jalaliDatepicker.startWatch();
+</script>
+
+<script src="{% static 'bootstrap-5.3.0-dist/js/bootstrap.bundle.min.js' %}"></script>
+<script src="{% static 'jquery.formset.js' %}"></script>
+</html>

templates/core/charge.html

@@ -0,0 +1,27 @@
+{% extends "base_charge.html" %}
+{% load static %}
+{% load crispy_forms_tags %}
+{% load jalali_tags %}
+
+{% block title %}افزایش موجودی{% endblock %}
+{% block page_title %}افزایش موجودی{% endblock %}
+
+
+{% block content %}
+    <form action="{{ request.get_full_path }}" method="post" enctype="multipart/form-data">
+        {% csrf_token %}
+        <div class="row g-3">
+            <div class="col-md-12 col-lg-12" id="formset">
+{#                <div class="card">#}
+{#                    <div class="card-body">#}
+                        {{ form|crispy }}
+{#                    </div>#}
+{#                </div>#}
+            </div>
+            <div class="col-12">
+                <input class="w-100 btn btn-primary btn-lg" type="submit" value="ثبت" name="save"/>
+            </div>
+        </div>
+    </form>
+
+{% endblock %}

wallet/settings.py

@@ -258,4 +258,6 @@ CACHES = {
             "CLIENT_CLASS": "django_redis.client.DefaultClient",
         }
     }
-}
+}
+
+ALLOWED_NEGATIVE_BALANCE_APPLICATIONS = config('ALLOWED_NEGATIVE_BALANCE_APPLICATIONS', cast=lambda v: [s.strip() for s in v.split(',')])