import { useState } from 'react';
import { PageTemplate } from '@/components/page-template';
import { usePage, router } from '@inertiajs/react';
import { hasPermission } from '@/utils/authorization';
import { CrudTable } from '@/components/CrudTable';
import { CrudDeleteModal } from '@/components/CrudDeleteModal';
import { toast } from '@/components/custom-toast';
import { useTranslation } from 'react-i18next';
import { Pagination } from '@/components/ui/pagination';
import { SearchAndFilterBar } from '@/components/ui/search-and-filter-bar';

export default function Newsletters() {
  const { t } = useTranslation();
  const { auth, newsletters, filters: pageFilters = {}, globalSettings } = usePage().props as any;
  const permissions = auth?.permissions || [];
  
  // State
  const [searchTerm, setSearchTerm] = useState(pageFilters.search || '');
  const [showFilters, setShowFilters] = useState(false);
  const [isDeleteModalOpen, setIsDeleteModalOpen] = useState(false);
  const [currentItem, setCurrentItem] = useState<any>(null);
  
  // Check if any filters are active
  const hasActiveFilters = () => {
    return searchTerm !== '';
  };
  
  // Count active filters
  const activeFilterCount = () => {
    return (searchTerm !== '' ? 1 : 0);
  };
  
  const handleSearch = (e: React.FormEvent) => {
    e.preventDefault();
    applyFilters();
  };
  
  const applyFilters = () => {
    router.get(route('newsletters.index'), { 
      page: 1,
      search: searchTerm || undefined,
      per_page: pageFilters.per_page
    }, { preserveState: true, preserveScroll: true });
  };
  
  const handleSort = (field: string) => {
    const direction = pageFilters.sort_field === field && pageFilters.sort_direction === 'asc' ? 'desc' : 'asc';
    
    router.get(route('newsletters.index'), { 
      sort_field: field, 
      sort_direction: direction, 
      page: 1,
      search: searchTerm || undefined,
      per_page: pageFilters.per_page
    }, { preserveState: true, preserveScroll: true });
  };
  
  const handleAction = (action: string, item: any) => {
    setCurrentItem(item);
    
    switch (action) {
      case 'delete':
        setIsDeleteModalOpen(true);
        break;
    }
  };

  const handleDeleteConfirm = () => {
    if (!globalSettings?.is_demo) {
      toast.loading(t('Deleting newsletter subscription...'));
    }
    
    router.delete(route('newsletters.destroy', currentItem.id), {
      onSuccess: (page) => {
        setIsDeleteModalOpen(false);
        if (!globalSettings?.is_demo) {
          toast.dismiss();
        }
        if (page.props.flash.success) {
          toast.success(t(page.props.flash.success));
        } else if (page.props.flash.error) {
          toast.error(t(page.props.flash.error));
        }
      },
      onError: (errors) => {
        if (!globalSettings?.is_demo) {
          toast.dismiss();
        }
        if (typeof errors === 'string') {
          toast.error(t(errors));
        } else {
          toast.error(t('Failed to delete newsletter subscription: {{errors}}', { errors: Object.values(errors).join(', ') }));
        }
      }
    });
  };

  const handleResetFilters = () => {
    setSearchTerm('');
    setShowFilters(false);
    
    router.get(route('newsletters.index'), {
      page: 1,
      per_page: pageFilters.per_page
    }, { preserveState: true, preserveScroll: true });
  };

  const breadcrumbs = [
    { title: t('Dashboard'), href: route('dashboard') },
    { title: t('Landing Page'), href: route('landing-page') },
    { title: t('Newsletter') }
  ];

  // Define table columns
  const columns = [
    { 
      key: 'email', 
      label: t('Email'),
      sortable: true,
      render: (value) => value || '-'
    },
    { 
      key: 'created_at', 
      label: t('Subscribed Date'),
      sortable: true,
      render: (value) => window.appSettings?.formatDateTimeSimple(value, false) || new Date(value).toLocaleDateString()
    }
  ];

  // Define table actions
  const actions = [
    { 
      label: t('Delete'), 
      icon: 'Trash2', 
      action: 'delete', 
      className: 'text-red-500',
      requiredPermission: 'delete-newsletters'
    }
  ];

  return (
    <PageTemplate 
      title={t("Newsletter")} 
      url="/newsletters"
      breadcrumbs={breadcrumbs}
      noPadding
    >
      {/* Search and filters section */}
      <div className="bg-white dark:bg-gray-900 rounded-lg shadow mb-4 p-4">
        <SearchAndFilterBar
          searchTerm={searchTerm}
          onSearchChange={setSearchTerm}
          onSearch={handleSearch}
          filters={[]}
          showFilters={showFilters}
          setShowFilters={setShowFilters}
          hasActiveFilters={hasActiveFilters}
          activeFilterCount={activeFilterCount}
          onResetFilters={handleResetFilters}
          onApplyFilters={applyFilters}
          currentPerPage={pageFilters.per_page?.toString() || "10"}
          onPerPageChange={(value) => {
            router.get(route('newsletters.index'), { 
              page: 1, 
              per_page: parseInt(value),
              search: searchTerm || undefined
            }, { preserveState: true, preserveScroll: true });
          }}
        />
      </div>

      {/* Content section */}
      <div className="bg-white dark:bg-gray-900 rounded-lg shadow overflow-hidden">
        <CrudTable
          columns={columns}
          actions={actions}
          data={newsletters?.data || []}
          from={newsletters?.from || 1}
          onAction={handleAction}
          sortField={pageFilters.sort_field}
          sortDirection={pageFilters.sort_direction}
          onSort={handleSort}
          permissions={permissions}
          entityPermissions={{
            delete: 'delete-newsletters'
          }}
        />

        {/* Pagination section */}
        <Pagination
          from={newsletters?.from || 0}
          to={newsletters?.to || 0}
          total={newsletters?.total || 0}
          links={newsletters?.links}
          entityName={t("newsletter subscriptions")}
          onPageChange={(url) => router.get(url)}
        />
      </div>

      {/* Delete Modal */}
      <CrudDeleteModal
        isOpen={isDeleteModalOpen}
        onClose={() => setIsDeleteModalOpen(false)}
        onConfirm={handleDeleteConfirm}
        itemName={currentItem?.email || ''}
        itemType={t('newsletter subscription')}
      />
    </PageTemplate>
  );
}