from django.contrib import admin
from django.conf import settings
from django import forms

from .emailing import send_system_email
from .models import AdminAuditLog, EmployeeProfile, FormFieldConfig, FormOption, IntroChecklistItem, NotificationRule, NotificationTemplate, OffboardingRequest, OnboardingIntroductionSession, OnboardingRequest, PortalAppConfig, PortalBranding, ScheduledWelcomeEmail, SystemEmailConfig, WorkflowConfig


@admin.register(EmployeeProfile)
class EmployeeProfileAdmin(admin.ModelAdmin):
    list_display = ('full_name', 'work_email', 'department', 'job_title', 'updated_at')
    search_fields = ('full_name', 'work_email', 'department')


@admin.register(AdminAuditLog)
class AdminAuditLogAdmin(admin.ModelAdmin):
    list_display = ('created_at', 'actor_display', 'action', 'target_type', 'target_id', 'target_label')
    search_fields = ('actor_display', 'action', 'target_type', 'target_label')
    list_filter = ('action', 'target_type', 'created_at')
    ordering = ('-created_at', '-id')


@admin.register(PortalBranding)
class PortalBrandingAdmin(admin.ModelAdmin):
    list_display = ('name', 'portal_title', 'company_name', 'support_email', 'default_language', 'updated_at')


@admin.register(PortalAppConfig)
class PortalAppConfigAdmin(admin.ModelAdmin):
    list_display = ('key', 'section', 'sort_order', 'is_enabled', 'updated_at')
    list_filter = ('section', 'is_enabled')
    search_fields = ('key', 'title_override', 'title_override_en')
    ordering = ('section', 'sort_order', 'key')
    list_editable = ('section', 'sort_order', 'is_enabled')


@admin.register(OnboardingRequest)
class OnboardingRequestAdmin(admin.ModelAdmin):
    list_display = ('id', 'full_name', 'work_email', 'department', 'contract_start', 'created_at')
    search_fields = ('full_name', 'work_email', 'department')
    list_filter = ('department', 'created_at', 'group_mailboxes_required', 'additional_software_needed')


@admin.register(OffboardingRequest)
class OffboardingRequestAdmin(admin.ModelAdmin):
    list_display = ('id', 'full_name', 'work_email', 'department', 'last_working_day', 'generated_pdf_path', 'created_at')
    search_fields = ('full_name', 'work_email', 'department')
    list_filter = ('department', 'created_at')


@admin.register(FormOption)
class FormOptionAdmin(admin.ModelAdmin):
    list_display = ('category', 'label', 'label_en', 'value', 'sort_order', 'is_active')
    list_filter = ('category', 'is_active')
    search_fields = ('label', 'label_en', 'value')
    ordering = ('category', 'sort_order', 'label')


@admin.register(FormFieldConfig)
class FormFieldConfigAdmin(admin.ModelAdmin):
    list_display = ('form_type', 'field_name', 'page_key', 'sort_order', 'is_visible', 'is_required')
    list_filter = ('form_type', 'page_key', 'is_visible', 'is_required')
    search_fields = ('field_name', 'label_override', 'label_override_en', 'help_text_override', 'help_text_override_en')
    ordering = ('form_type', 'sort_order', 'field_name')
    list_editable = ('page_key', 'sort_order', 'is_visible', 'is_required')


@admin.register(IntroChecklistItem)
class IntroChecklistItemAdmin(admin.ModelAdmin):
    list_display = ('section', 'label', 'label_en', 'condition_field', 'condition_operator', 'condition_value', 'sort_order', 'is_active')
    list_filter = ('section', 'condition_operator', 'is_active')
    search_fields = ('label', 'label_en', 'condition_field', 'condition_value')
    ordering = ('section', 'sort_order', 'label')
    list_editable = ('sort_order', 'is_active')


@admin.register(OnboardingIntroductionSession)
class OnboardingIntroductionSessionAdmin(admin.ModelAdmin):
    list_display = ('onboarding_request', 'status', 'completed_by_name', 'completed_at', 'updated_at')
    list_filter = ('status', 'completed_at', 'updated_at')
    search_fields = ('onboarding_request__full_name', 'onboarding_request__work_email', 'completed_by_name')
    ordering = ('-updated_at', '-id')


@admin.register(WorkflowConfig)
class WorkflowConfigAdmin(admin.ModelAdmin):
    list_display = (
        'name',
        'it_onboarding_email',
        'general_info_email',
        'business_card_email',
        'hr_works_email',
        'key_notification_email',
        'nextcloud_enabled_override',
        'email_test_mode_override',
    )
    fieldsets = (
        ('Benachrichtigungen', {
            'fields': (
                'name',
                'it_onboarding_email',
                'general_info_email',
                'business_card_email',
                'hr_works_email',
                'key_notification_email',
            )
        }),
        ('Modi', {
            'fields': (
                'nextcloud_enabled_override',
                'email_test_mode_override',
                'sync_interval_seconds',
            )
        }),
        ('Nextcloud Konfiguration', {
            'fields': (
                'nextcloud_base_url_override',
                'nextcloud_username_override',
                'nextcloud_password_override',
                'nextcloud_directory_override',
            )
        }),
        ('Mail Server Konfiguration', {
            'fields': (
                'imap_server',
                'mailbox',
                'smtp_server',
                'smtp_port',
                'email_account',
                'email_password',
                'smtp_use_ssl',
                'smtp_use_tls',
            )
        }),
        ('Rechtlicher Text', {'fields': ('legal_text',)}),
    )

    def formfield_for_dbfield(self, db_field, request, **kwargs):
        if db_field.name in {'nextcloud_password_override', 'email_password'}:
            kwargs['widget'] = forms.PasswordInput(render_value=True)
        return super().formfield_for_dbfield(db_field, request, **kwargs)


@admin.register(NotificationTemplate)
class NotificationTemplateAdmin(admin.ModelAdmin):
    list_display = ('key', 'is_active', 'updated_at')
    list_filter = ('is_active', 'key')
    search_fields = ('key', 'subject_template', 'body_template')


@admin.register(NotificationRule)
class NotificationRuleAdmin(admin.ModelAdmin):
    list_display = ('name', 'event_type', 'operator', 'field_name', 'is_active', 'sort_order')
    list_filter = ('event_type', 'operator', 'is_active')
    search_fields = ('name', 'field_name', 'expected_value', 'recipients', 'template_key')
    ordering = ('event_type', 'sort_order', 'id')


@admin.register(ScheduledWelcomeEmail)
class ScheduledWelcomeEmailAdmin(admin.ModelAdmin):
    list_display = ('id', 'onboarding_request', 'recipient_email', 'send_at', 'status', 'sent_at', 'updated_at')
    list_filter = ('status', 'send_at', 'sent_at')
    search_fields = ('recipient_email', 'onboarding_request__full_name', 'onboarding_request__work_email')
    ordering = ('-send_at', '-id')


@admin.register(SystemEmailConfig)
class SystemEmailConfigAdmin(admin.ModelAdmin):
    list_display = ('name', 'is_active', 'host', 'port', 'username', 'use_tls', 'use_ssl', 'from_email', 'updated_at')
    list_filter = ('is_active', 'use_tls', 'use_ssl')
    search_fields = ('name', 'host', 'username', 'from_email')
    actions = ('send_smtp_test',)

    def save_model(self, request, obj, form, change):
        super().save_model(request, obj, form, change)
        if obj.is_active:
            SystemEmailConfig.objects.exclude(id=obj.id).update(is_active=False)

    def send_smtp_test(self, request, queryset):
        cfg = queryset.first()
        if not cfg:
            self.message_user(request, 'Bitte eine SMTP-Konfiguration auswählen.', level='warning')
            return

        prev_active_ids = list(SystemEmailConfig.objects.filter(is_active=True).values_list('id', flat=True))
        try:
            SystemEmailConfig.objects.filter(id=cfg.id).update(is_active=True)
            SystemEmailConfig.objects.exclude(id=cfg.id).update(is_active=False)
            send_system_email(
                subject='SMTP Test aus Admin',
                body=(
                    f'SMTP Test erfolgreich für Konfiguration: {cfg.name}\n'
                    f'Host: {cfg.host}:{cfg.port}\n'
                    f'User: {cfg.username or "-"}'
                ),
                to=[settings.TEST_NOTIFICATION_EMAIL],
            )
            self.message_user(request, f'SMTP-Testmail gesendet über "{cfg.name}".')
        except Exception as exc:
            self.message_user(request, f'SMTP-Test fehlgeschlagen: {exc}', level='error')
        finally:
            if prev_active_ids:
                SystemEmailConfig.objects.update(is_active=False)
                SystemEmailConfig.objects.filter(id__in=prev_active_ids).update(is_active=True)

    send_smtp_test.short_description = 'SMTP-Testmail mit ausgewählter Konfiguration senden'