import { FileText, Plus } from 'lucide-react';
import { getTranslations } from 'next-intl/server';

import { createNewsletterApi } from '@kit/newsletter/api';
import { getSupabaseServerClient } from '@kit/supabase/server-client';
import { Badge } from '@kit/ui/badge';
import { Button } from '@kit/ui/button';
import { Card, CardContent, CardHeader, CardTitle } from '@kit/ui/card';

import { AccountNotFound } from '~/components/account-not-found';
import { CmsPageShell } from '~/components/cms-page-shell';
import { EmptyState } from '~/components/empty-state';

interface PageProps {
  params: Promise<{ account: string }>;
}

export default async function NewsletterTemplatesPage({ params }: PageProps) {
  const { account } = await params;
  const client = getSupabaseServerClient();
  const t = await getTranslations('newsletter');

  const { data: acct } = await client
    .from('accounts')
    .select('id')
    .eq('slug', account)
    .single();

  if (!acct) return <AccountNotFound />;

  const api = createNewsletterApi(client);
  const templatesResult = await api.listTemplates(acct.id);
  const templates = templatesResult.data;

  return (
    <CmsPageShell account={account} title={t('templates.title')}>
      <div className="flex w-full flex-col gap-6">
        {/* Header */}
        <div className="flex items-center justify-between">
          <div>
            <p className="text-muted-foreground">{t('templates.subtitle')}</p>
          </div>

          <Button data-test="newsletter-templates-new-btn">
            <Plus className="mr-2 h-4 w-4" />
            {t('templates.newTemplate')}
          </Button>
        </div>

        {/* Table or Empty State */}
        {templates.length === 0 ? (
          <EmptyState
            icon={<FileText className="h-8 w-8" />}
            title={t('templates.noTemplates')}
            description={t('templates.createFirst')}
            actionLabel={t('templates.newTemplate')}
          />
        ) : (
          <Card>
            <CardHeader>
              <CardTitle>
                {t('templates.allTemplates', { count: templates.length })}
              </CardTitle>
            </CardHeader>
            <CardContent>
              <div className="overflow-x-auto rounded-md border">
                <table className="w-full min-w-[640px] text-sm">
                  <thead>
                    <tr className="bg-muted/50 border-b">
                      <th scope="col" className="p-3 text-left font-medium">
                        {t('templates.name')}
                      </th>
                      <th scope="col" className="p-3 text-left font-medium">
                        {t('templates.subject')}
                      </th>
                      <th scope="col" className="p-3 text-left font-medium">
                        {t('templates.variables')}
                      </th>
                    </tr>
                  </thead>
                  <tbody>
                    {templates.map((template: Record<string, unknown>) => {
                      const variables = Array.isArray(template.variables)
                        ? (template.variables as string[])
                        : [];
                      return (
                        <tr
                          key={String(template.id)}
                          className="hover:bg-muted/30 border-b"
                        >
                          <td className="p-3 font-medium">
                            {String(template.name ?? '—')}
                          </td>
                          <td className="p-3">
                            {String(template.subject ?? '—')}
                          </td>
                          <td className="p-3">
                            <div className="flex flex-wrap gap-1">
                              {variables.length > 0 ? (
                                variables.map((v) => (
                                  <Badge
                                    key={v}
                                    variant="secondary"
                                    className="text-xs"
                                  >
                                    {`{{${v}}}`}
                                  </Badge>
                                ))
                              ) : (
                                <span className="text-muted-foreground">—</span>
                              )}
                            </div>
                          </td>
                        </tr>
                      );
                    })}
                  </tbody>
                </table>
              </div>
            </CardContent>
          </Card>
        )}
      </div>
    </CmsPageShell>
  );
}