import Link from "next/link";
import { getTranslations } from "next-intl/server";
import type { Asset, AssetType } from "@prisma/client";
import { Button } from "@/components/ui/button";
import { Input } from "@/components/ui/input";
import { Label } from "@/components/ui/label";
import { Textarea } from "@/components/ui/textarea";
import { SegmentedRating } from "@/components/segmented-rating";

const ASSET_TYPES = ["INFORMATION", "SYSTEM", "APPLICATION", "LOCATION", "SUPPLIER", "IT_SERVICE", "PERSON", "DATA"] as const;
const ASSET_STATUS = ["ACTIVE", "PLANNED", "RETIRED"] as const;

/** Formular für Anlegen/Bearbeiten eines Assets (Server-Action wird übergeben). */
export async function AssetForm({
  action,
  asset,
  users,
  cancelHref,
  defaultType = "SYSTEM",
}: {
  action: (formData: FormData) => Promise<void>;
  asset?: Asset;
  users: { id: string; name: string }[];
  cancelHref: string;
  /** Vorbelegter Typ beim Anlegen (z. B. INFORMATION im BIA-Popup Schritt 1). */
  defaultType?: AssetType;
}) {
  const t = await getTranslations("assets");
  const tType = await getTranslations("assetType");
  const tStatus = await getTranslations("assetStatus");
  const tLevel = await getTranslations("protectionLevel");
  const tc = await getTranslations("common");

  const selectClass =
    "h-9 w-full rounded-md border border-input bg-transparent px-3 text-sm";

  return (
    <form action={action} className="max-w-2xl space-y-4">
      <div>
        <Label htmlFor="name">{t("name")}</Label>
        <Input id="name" name="name" required defaultValue={asset?.name} className="mt-1" />
      </div>
      <div>
        <Label htmlFor="description">{t("description")}</Label>
        <Textarea
          id="description"
          name="description"
          rows={3}
          defaultValue={asset?.description ?? ""}
          className="mt-1"
        />
      </div>
      <div className="grid grid-cols-2 gap-4">
        <div>
          <Label htmlFor="type">{t("type")}</Label>
          <select id="type" name="type" defaultValue={asset?.type ?? defaultType} className={`${selectClass} mt-1`}>
            {ASSET_TYPES.map((v) => (
              <option key={v} value={v}>
                {tType(v)}
              </option>
            ))}
          </select>
        </div>
        <div>
          <Label htmlFor="status">{t("status")}</Label>
          <select id="status" name="status" defaultValue={asset?.status ?? "ACTIVE"} className={`${selectClass} mt-1`}>
            {ASSET_STATUS.map((v) => (
              <option key={v} value={v}>
                {tStatus(v)}
              </option>
            ))}
          </select>
        </div>
        <div>
          <Label htmlFor="ownerId">{t("owner")}</Label>
          <select id="ownerId" name="ownerId" defaultValue={asset?.ownerId ?? ""} className={`${selectClass} mt-1`}>
            <option value="">{tc("none")}</option>
            {users.map((u) => (
              <option key={u.id} value={u.id}>
                {u.name}
              </option>
            ))}
          </select>
        </div>
        <div>
          <Label htmlFor="location">{t("location")}</Label>
          <Input id="location" name="location" defaultValue={asset?.location ?? ""} className="mt-1" />
        </div>
      </div>

      <fieldset>
        <legend className="text-sm font-medium">{t("protection")} (1–4)</legend>
        <div className="mt-2 grid grid-cols-3 gap-4">
          {(
            [
              ["confidentiality", t("confidentiality"), asset?.confidentiality],
              ["integrity", t("integrity"), asset?.integrity],
              ["availability", t("availability"), asset?.availability],
            ] as const
          ).map(([name, label, value]) => (
            <div key={name}>
              <Label>{label}</Label>
              <div className="mt-1">
                <SegmentedRating
                  name={name}
                  defaultValue={value ?? 1}
                  low={tLevel("1")}
                  high={tLevel("4")}
                />
              </div>
            </div>
          ))}
        </div>
      </fieldset>

      <div>
        <Label htmlFor="tags">{t("tags")}</Label>
        <Input id="tags" name="tags" defaultValue={asset?.tags.join(", ") ?? ""} className="mt-1" />
      </div>

      <div className="flex gap-2 pt-2">
        <Button type="submit">{tc("save")}</Button>
        <Button variant="outline" nativeButton={false} render={<Link href={cancelHref} />}>
          {tc("cancel")}
        </Button>
      </div>
    </form>
  );
}