from django.contrib import admin
from django.utils.translation import gettext_lazy as _
from unfold.admin import ModelAdmin
from unfold.decorators import display

from apps.account.models.role import Role, PERMISSION_CATEGORIES
from utils.admin import project_admin_site


class RoleAdmin(ModelAdmin):
    list_display = ('name', 'slug', 'is_default', 'is_system', 'users_count', 'updated_at')
    list_display_links = ('name', 'slug')
    list_filter = ('is_default', 'is_system')
    search_fields = ('name', 'slug', 'description')
    ordering = ('name',)
    readonly_fields = ('created_at', 'updated_at')

    fieldsets = (
        (None, {
            "fields": (
                ("name", "slug"),
                ("is_default", "is_system"),
                "description",
            ),
        }),
        (_("Identity & Profiles"), {
            "classes": ["tab"],
            "fields": (
                ("is_searchable", "can_submit_verification"),
                ("can_view_full_profiles", "can_manage_institutions"),
            ),
        }),
        (_("Chat & Communications"), {
            "classes": ["tab"],
            "fields": (
                ("can_send_direct_messages", "can_create_group_chats"),
                ("can_start_video_calls", "can_moderate_chat"),
                ("is_chat_muted",),
            ),
        }),
        (_("CMS & Articles"), {
            "classes": ["tab"],
            "fields": (
                ("can_create_posts", "can_publish_posts_directly"),
                ("can_edit_own_posts", "can_delete_own_posts"),
                ("can_comment",),
            ),
        }),
        (_("LMS & Academics"), {
            "classes": ["tab"],
            "fields": (
                ("can_enroll_courses", "can_create_courses"),
                ("can_publish_courses", "can_issue_certificates"),
                ("can_grade_submissions", "has_premium_lms_access"),
            ),
        }),
        (_("Meetings"), {
            "classes": ["tab"],
            "fields": (
                ("can_request_meetings", "can_accept_meetings"),
            ),
        }),
        (_("Events"), {
            "classes": ["tab"],
            "fields": (
                ("can_register_events", "can_create_events"),
                ("can_publish_events", "can_checkin_attendees"),
                ("can_export_attendee_list",),
            ),
        }),
        (_("Community Projects"), {
            "classes": ["tab"],
            "fields": (
                ("can_volunteer", "can_create_projects"),
                ("can_manage_project_tasks", "can_approve_projects"),
            ),
        }),
        (_("Donations & Charity"), {
            "classes": ["tab"],
            "fields": (
                ("can_make_donations", "can_create_donation_campaigns"),
                ("can_view_donation_reports",),
            ),
        }),
        (_("Support & Tickets"), {
            "classes": ["tab"],
            "fields": (
                ("can_create_tickets", "can_reply_tickets"),
                ("can_manage_tickets",),
            ),
        }),
        (_("Dynamic Forms"), {
            "classes": ["tab"],
            "fields": (
                ("can_submit_forms", "can_create_forms"),
                ("can_export_form_data",),
            ),
        }),
        (_("Diplomacy & Institutional"), {
            "classes": ["tab"],
            "fields": (
                ("can_view_diplomatic_reports", "can_create_diplomatic_reports"),
            ),
        }),
        (_("Administration & Security"), {
            "classes": ["tab"],
            "fields": (
                ("can_access_admin_panel", "can_manage_users"),
                ("can_ban_users", "can_view_analytics"),
            ),
        }),
        (_("Metadata"), {
            "classes": ["tab"],
            "fields": (
                ("created_at", "updated_at"),
            ),
        }),
    )

    @display(description=_("Assigned Users"))
    def users_count(self, obj):
        count = obj.users.count()
        return f"{count} users"

    def has_add_permission(self, request):
        return bool(request.user and request.user.is_authenticated and (request.user.is_staff or request.user.is_superuser or request.user.can_access_admin_panel()))

    def has_change_permission(self, request, obj=None):
        return bool(request.user and request.user.is_authenticated and (request.user.is_staff or request.user.is_superuser or request.user.can_access_admin_panel()))

    def has_delete_permission(self, request, obj=None):
        if obj and getattr(obj, 'is_system', False):
            return False  # Protect core default roles from accidental deletion
        return bool(request.user and request.user.is_authenticated and (request.user.is_staff or request.user.is_superuser or request.user.can_access_admin_panel()))


# Register in both default and custom admin sites
try:
    admin.site.register(Role, RoleAdmin)
except admin.sites.AlreadyRegistered:
    pass

project_admin_site.register(Role, RoleAdmin)