Dovodi_Backend/utils/admin.py

import json
import random
from functools import lru_cache

from django import forms
from django.conf import settings
from django.contrib.humanize.templatetags.humanize import intcomma
from django.urls import reverse
from django.utils.safestring import mark_safe
from django.utils.translation import gettext_lazy as _
from django.views.generic import RedirectView

# Unfold Imports
from unfold.sites import UnfoldAdminSite

# ---------------------------------------------------------
#  1. Helper Functions
# ---------------------------------------------------------

def admin_url_generator(request, url_name):
    """
    Dynamically generates admin URLs based on the current active panel.
    Usage in settings.py: lambda request: admin_url_generator(request, "app_model_changelist")
    """
    # 1. Determine the current namespace based on the URL path
    if request.path.startswith('/en/dovoodi/') or request.path.startswith('/dovoodi/'):
        namespace = 'dovoodi_admin'
    else:
        # Default to the main admin
        namespace = 'imam_javad_admin'

    # 2. Construct the view name (e.g., "imam_javad_admin:account_user_changelist")
    full_view_name = f"{namespace}:{url_name}"

    # 3. Resolve the URL
    try:
        return reverse(full_view_name)
    except Exception:
        # If the model isn't registered in this specific admin, return a dead link
        # to prevent the whole page from crashing.
        return "#"

def dashboard_callback(request, context):
    context.update(random_data())
    return context

def variables(request):
    return {"plausible_domain": getattr(settings, 'PLAUSIBLE_DOMAIN', '')}

# ---------------------------------------------------------
#  2. Custom Login Form
# ---------------------------------------------------------

class LoginForm:
    """Lazy login form to avoid circular imports during settings loading"""

    @staticmethod
    def get_form():
        # Import AuthenticationForm only when needed
        from django.contrib.auth.forms import AuthenticationForm

        class CustomLoginForm(AuthenticationForm):
            password = forms.CharField(widget=forms.PasswordInput(render_value=True))

            def __init__(self, request=None, *args, **kwargs):
                super().__init__(request, *args, **kwargs)
                # Change the label of the username field to "Email"
                self.fields["username"].label = "Email"

        return CustomLoginForm

# ---------------------------------------------------------
#  3. Admin Site Definitions
# ---------------------------------------------------------

class FormulaAdminSite(UnfoldAdminSite):
    """Main Admin for Imam Javad"""
    site_header = "Imam Javad Admin"
    site_title = "Imam Javad"
    index_title = "System Administration"

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        # Set login form after initialization to avoid circular import
        self.login_form = LoginForm.get_form()

class DovoodiAdminSite(UnfoldAdminSite):
    """Secondary Admin for Dovoodi"""
    site_header = "Dovoodi Admin"
    site_title = "Dovoodi"
    index_title = "System Administration"

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        # Set login form after initialization to avoid circular import
        self.login_form = LoginForm.get_form()

# Simple admin site placeholders that will be replaced after Django setup
class AdminSitePlaceholder(UnfoldAdminSite):
    """Placeholder that behaves like an admin site until Django is fully loaded"""

    def __init__(self, site_class, name):
        # Initialize with minimal setup to avoid circular imports
        self._site_class = site_class
        self._name = name
        self._real_instance = None
        # Don't call super().__init__() here to avoid circular imports

    def _get_real_instance(self):
        if self._real_instance is None:
            self._real_instance = self._site_class(name=self._name)
        return self._real_instance

    def __getattr__(self, name):
        return getattr(self._get_real_instance(), name)

    def __call__(self, *args, **kwargs):
        return self._get_real_instance()(*args, **kwargs)

# Create placeholder instances
project_admin_site = AdminSitePlaceholder(FormulaAdminSite, 'imam_javad_admin')
dovoodi_admin_site = AdminSitePlaceholder(DovoodiAdminSite, 'dovoodi_admin')

class HomeView(RedirectView):
    pattern_name = "imam_javad_admin:index"

# ---------------------------------------------------------
#  4. Dummy Data for Dashboard Charts
# ---------------------------------------------------------

@lru_cache
def random_data():
    WEEKDAYS = ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"]
    
    # Generate some fake data
    positive = [[1, random.randrange(8, 28)] for i in range(1, 28)]
    negative = [[-1, -random.randrange(8, 28)] for i in range(1, 28)]
    average = [r[1] - random.randint(3, 5) for r in positive]
    performance_positive = [[1, random.randrange(8, 28)] for i in range(1, 28)]
    performance_negative = [[-1, -random.randrange(8, 28)] for i in range(1, 28)]

    return {
        "navigation": [
            {"title": _("Dashboard"), "link": "/", "active": True},
            {"title": _("Analytics"), "link": "#"},
            {"title": _("Settings"), "link": "#"},
        ],
        "kpi": [
            {
                "title": "Total Revenue",
                "metric": f"${intcomma(f'{random.uniform(1000, 9999):.02f}')}",
                "footer": mark_safe(f'<strong class="text-green-700 font-semibold dark:text-green-400">+{intcomma(f"{random.uniform(1, 9):.02f}")}%</strong>&nbsp;progress'),
                "chart": json.dumps({"labels": [WEEKDAYS[day % 7] for day in range(1, 28)], "datasets": [{"data": average, "borderColor": "#9333ea"}]}),
            },
        ],
        "chart": json.dumps({
            "labels": [WEEKDAYS[day % 7] for day in range(1, 28)],
            "datasets": [
                {"label": "Revenue", "data": positive, "backgroundColor": "var(--color-primary-700)"},
            ],
        }),
    }