import Link from "next/link";
import { prisma } from "@/lib/prisma";
import { BackLink } from "@/components/back-link";
import { ConfirmForm } from "@/components/confirm-form";
import { formatDate } from "@/lib/format";
import { createHarvestAction, toggleHarvestPublishedAction, deleteHarvestAction } from "../actions";
import { ApiCoreSyncPanel, ApiCoreSyncResult } from "@/components/apicore-sync-panel";
import { getLocale } from "@/i18n/locale";
import { getDictionary } from "@/i18n/get-dictionary";

export default async function AdminHarvestsPage(props: PageProps<"/admin/ernten">) {
  const t = getDictionary(await getLocale());
  const searchParams = await props.searchParams;
  const error = searchParams.error;
  const harvests = await prisma.harvest.findMany({
    orderBy: [{ year: "desc" }, { harvestDate: "desc" }],
    include: { _count: { select: { batches: true, products: true } } },
  });

  return (
    <div>
      <BackLink href="/admin" label={t.adminHarvestsPage.backToDashboard} />
      <h1 className="text-2xl text-forest mb-8">{t.adminHarvestsPage.title}</h1>

      {error ? (
        <p className="mb-6 text-sm text-red-700 bg-red-50 border border-red-200 px-4 py-3">{error}</p>
      ) : null}
      <ApiCoreSyncResult searchParams={searchParams} />

      <div className="overflow-x-auto bg-background border border-ink/10">
        <table className="w-full text-sm">
          <thead className="text-left text-ink/65 border-b border-ink/10">
            <tr>
              <th className="p-4">{t.adminHarvestsPage.colType}</th>
              <th className="p-4">{t.adminHarvestsPage.colYear}</th>
              <th className="p-4">{t.adminHarvestsPage.colHarvestDate}</th>
              <th className="p-4">{t.adminHarvestsPage.colLocation}</th>
              <th className="p-4">{t.adminHarvestsPage.colBatches}</th>
              <th className="p-4">{t.adminHarvestsPage.colProducts}</th>
              <th className="p-4">{t.adminHarvestsPage.colStatus}</th>
              <th className="p-4" />
            </tr>
          </thead>
          <tbody className="divide-y divide-ink/10">
            {harvests.map((harvest) => (
              <tr key={harvest.id} className="transition-colors hover:bg-ink/[0.03]">
                <td className="p-4 text-forest">{harvest.type}</td>
                <td className="p-4">{harvest.year}</td>
                <td className="p-4">{formatDate(harvest.harvestDate)}</td>
                <td className="p-4">{harvest.location}</td>
                <td className="p-4">{harvest._count.batches}</td>
                <td className="p-4">{harvest._count.products}</td>
                <td className="p-4">
                  <span
                    className={
                      harvest.isPublished
                        ? "text-forest bg-forest/10 px-2 py-1 text-xs"
                        : "text-honey-dark bg-honey/10 px-2 py-1 text-xs"
                    }
                  >
                    {harvest.isPublished ? t.adminHarvestsPage.statusPublished : t.adminHarvestsPage.statusDraft}
                  </span>
                </td>
                <td className="p-4 whitespace-nowrap">
                  <Link href={`/admin/ernten/${harvest.id}`} className="text-forest underline mr-4">
                    {t.adminHarvestsPage.edit}
                  </Link>
                  <form action={toggleHarvestPublishedAction} className="inline">
                    <input type="hidden" name="id" value={harvest.id} />
                    {harvest.isPublished ? null : <input type="hidden" name="isPublished" value="on" />}
                    <button type="submit" className="text-forest underline mr-4">
                      {harvest.isPublished ? t.adminHarvestsPage.unpublish : t.adminHarvestsPage.publish}
                    </button>
                  </form>
                  {harvest._count.batches === 0 && harvest._count.products === 0 ? (
                    <ConfirmForm
                      action={deleteHarvestAction}
                      confirmMessage={t.adminHarvestsPage.deleteConfirm(`${harvest.type} ${harvest.year}`)}
                      className="inline"
                    >
                      <input type="hidden" name="id" value={harvest.id} />
                      <button type="submit" className="text-red-700 underline">
                        {t.adminHarvestsPage.delete}
                      </button>
                    </ConfirmForm>
                  ) : (
                    // Statt den Knopf wortlos wegzulassen: der Grund steht da.
                    <span className="text-xs text-ink/50">{t.adminHarvestsPage.notDeletable}</span>
                  )}
                </td>
              </tr>
            ))}
          </tbody>
        </table>
        {harvests.length === 0 ? <p className="p-6 text-ink/65">{t.adminHarvestsPage.noHarvestsYet}</p> : null}
      </div>

      <div className="mt-10 grid md:grid-cols-2 gap-6">
        <div className="bg-background border border-ink/10 p-6">
          <h2 className="text-lg text-forest mb-4">{t.adminHarvestsPage.newHarvestHeading}</h2>
          <form action={createHarvestAction} className="space-y-4">
            <div className="grid grid-cols-2 gap-4">
              <Field name="type" label={t.adminHarvestsPage.typeLabel} required />
              <Field name="year" label={t.adminHarvestsPage.yearLabel} type="number" required />
            </div>
            <Field name="harvestDate" label={t.adminHarvestsPage.harvestDateLabel} type="date" required />
            <Field name="location" label={t.adminHarvestsPage.locationLabel} defaultValue="Altenmünster" />
            <TextArea name="description" label={t.adminHarvestsPage.descriptionLabel} required />
            <label className="flex items-center gap-2 text-sm text-ink/70">
              <input type="checkbox" name="isPublished" defaultChecked />
              {t.adminHarvestsPage.isPublishedLabel}
            </label>
            <button type="submit" className="bg-forest text-cream px-6 py-2 text-sm">
              {t.adminHarvestsPage.create}
            </button>
          </form>
        </div>

        <ApiCoreSyncPanel returnTo="/admin/ernten" />
      </div>
    </div>
  );
}

function Field({
  name,
  label,
  type = "text",
  defaultValue,
  required = false,
}: {
  name: string;
  label: string;
  type?: string;
  defaultValue?: string;
  required?: boolean;
}) {
  return (
    <label className="block text-sm">
      <span className="text-ink/70">{label}</span>
      <input
        name={name}
        type={type}
        defaultValue={defaultValue}
        required={required}
        className="mt-1 w-full border border-ink/20 bg-background px-3 py-2"
      />
    </label>
  );
}

function TextArea({ name, label, required = false }: { name: string; label: string; required?: boolean }) {
  return (
    <label className="block text-sm">
      <span className="text-ink/70">{label}</span>
      <textarea name={name} required={required} rows={3} className="mt-1 w-full border border-ink/20 bg-background px-3 py-2" />
    </label>
  );
}