import Link from "next/link";
import type { ReactNode } from "react";

/**
 * Verlinkte Karte fuer die Konto-Uebersicht (Bestellungen, Adressen, ...).
 * Ersetzt den zuvor identischen, icon-losen "border + hover:border-forest"-
 * Kartenstil, der auf jeder Konto-Seite gleich aussah.
 */
export function AccountNavCard({
  href,
  icon,
  title,
  description,
  accent = false,
  className = "",
}: {
  href: string;
  icon: ReactNode;
  title: string;
  description: string;
  accent?: boolean;
  className?: string;
}) {
  return (
    <Link
      href={href}
      className={`group flex items-start gap-4 border p-6 transition-all duration-300 hover:-translate-y-0.5 ${
        accent
          ? "border-honey/40 bg-honey/5 hover:border-honey hover:shadow-[0_16px_32px_-20px_rgba(184,138,68,0.35)]"
          : "border-ink/10 hover:border-forest hover:shadow-[0_16px_32px_-20px_rgba(36,53,43,0.25)]"
      } ${className}`}
    >
      <span
        className={`flex-shrink-0 flex items-center justify-center w-11 h-11 border transition-colors ${
          accent ? "border-honey/40 text-honey-dark" : "border-ink/15 text-forest"
        }`}
      >
        {icon}
      </span>
      <span>
        <span className="block text-lg text-forest">{title}</span>
        <span className="block mt-1 text-sm text-ink/70">{description}</span>
      </span>
    </Link>
  );
}

const ORDER_STATUS_STYLES: Record<string, string> = {
  NEU: "border-ink/20 text-ink/70",
  BEZAHLT: "border-honey/40 text-honey-dark bg-honey/5",
  IN_VORBEREITUNG: "border-honey/40 text-honey-dark bg-honey/5",
  VERSANDBEREIT: "border-honey/40 text-honey-dark bg-honey/5",
  VERSENDET: "border-forest/40 text-forest bg-forest/5",
  ABHOLBEREIT: "border-forest/40 text-forest bg-forest/5",
  ABGEHOLT: "border-forest/40 text-forest bg-forest/5",
  STORNIERT: "border-red-200 text-red-700 bg-red-50",
};

/** Farbcodiertes Status-Label statt reinem Fließtext, damit der Bestellstatus auf einen Blick erkennbar ist. */
export function OrderStatusBadge({ status, label }: { status: string; label: string }) {
  const style = ORDER_STATUS_STYLES[status] ?? "border-ink/20 text-ink/70";
  return (
    <span className={`inline-flex items-center border px-2.5 py-1 text-xs tracking-wide-caps ${style}`}>
      {label}
    </span>
  );
}

const VERSAND_STEP_KEYS = ["NEU", "BEZAHLT", "IN_VORBEREITUNG", "VERSANDBEREIT", "VERSENDET"] as const;
const ABHOLUNG_STEP_KEYS = ["NEU", "BEZAHLT", "IN_VORBEREITUNG", "ABHOLBEREIT", "ABGEHOLT"] as const;

export interface OrderStatusTimelineLabels {
  ordered: string;
  paid: string;
  preparing: string;
  readyToShip: string;
  shipped: string;
  readyForPickup: string;
  pickedUp: string;
  cancelled: string;
  ariaLabel: string;
}

/**
 * Visuelle Fortschrittsanzeige statt reinem Status-Badge — nimmt das
 * Punkt/Linie-Muster der Chargen-Seite (app/charge/[code]) auf, damit
 * Kundschaft auf einen Blick sieht, wie weit die Bestellung bereits ist,
 * statt nur den aktuellen Einzelstatus als Wort zu lesen. Nimmt uebersetzte
 * Labels als Prop entgegen (statt selbst zu uebersetzen), damit diese Datei
 * server-sicher bleibt — sie wird auch von Admin-Server-Seiten importiert.
 */
export function OrderStatusTimeline({
  status,
  fulfillmentMethod,
  labels,
}: {
  status: string;
  fulfillmentMethod: "VERSAND" | "ABHOLUNG";
  labels: OrderStatusTimelineLabels;
}) {
  if (status === "STORNIERT") {
    return (
      <div className="flex items-center gap-2 text-sm text-red-700">
        <span className="w-2 h-2 rounded-full bg-red-500" aria-hidden="true" />
        {labels.cancelled}
      </div>
    );
  }

  const stepLabels: Record<(typeof VERSAND_STEP_KEYS)[number] | (typeof ABHOLUNG_STEP_KEYS)[number], string> = {
    NEU: labels.ordered,
    BEZAHLT: labels.paid,
    IN_VORBEREITUNG: labels.preparing,
    VERSANDBEREIT: labels.readyToShip,
    VERSENDET: labels.shipped,
    ABHOLBEREIT: labels.readyForPickup,
    ABGEHOLT: labels.pickedUp,
  };
  const stepKeys = fulfillmentMethod === "VERSAND" ? VERSAND_STEP_KEYS : ABHOLUNG_STEP_KEYS;
  const steps = stepKeys.map((key) => ({ key, label: stepLabels[key] }));
  const currentIndex = steps.findIndex((step) => step.key === status);

  return (
    <div className="flex items-start gap-x-1" role="list" aria-label={labels.ariaLabel}>
      {steps.map((step, i) => {
        const isDone = currentIndex >= 0 && i <= currentIndex;
        const isLineDone = i < currentIndex;
        return (
          <div key={step.key} role="listitem" className="flex-1 min-w-0 relative">
            <div className="flex items-center">
              <span
                className={`flex-shrink-0 w-2.5 h-2.5 rounded-full ${isDone ? "bg-forest" : "bg-ink/20"}`}
                aria-hidden="true"
              />
              {i < steps.length - 1 ? (
                <span
                  className={`ml-1 h-px flex-1 ${isLineDone ? "bg-forest" : "bg-ink/15"}`}
                  aria-hidden="true"
                />
              ) : null}
            </div>
            <p className={`mt-2 text-[11px] text-center leading-tight ${isDone ? "text-forest" : "text-ink/45"}`}>
              {step.label}
            </p>
          </div>
        );
      })}
    </div>
  );
}

/** Leerer-Zustand mit Icon statt eines einzelnen, unauffälligen Fließtext-Satzes. */
export function AccountEmptyState({
  icon,
  title,
  description,
  action,
}: {
  icon: ReactNode;
  title: string;
  description?: string;
  action?: ReactNode;
}) {
  return (
    <div className="mt-10 border border-dashed border-ink/15 px-8 py-14 text-center">
      <span className="inline-flex items-center justify-center w-12 h-12 border border-ink/15 text-ink/40 mx-auto">
        {icon}
      </span>
      <p className="mt-4 text-forest">{title}</p>
      {description ? (
        <p className="mt-1 text-sm text-ink/70 max-w-sm mx-auto">{description}</p>
      ) : null}
      {action ? <div className="mt-6">{action}</div> : null}
    </div>
  );
}

const ICON_PROPS = {
  width: 20,
  height: 20,
  viewBox: "0 0 24 24",
  fill: "none",
  stroke: "currentColor",
  strokeWidth: 1.5,
  strokeLinecap: "round" as const,
  strokeLinejoin: "round" as const,
};

export function OrderIcon() {
  return (
    <svg {...ICON_PROPS}>
      <path d="M4 8l8-4 8 4-8 4-8-4z" />
      <path d="M4 8v8l8 4 8-4V8" />
      <path d="M12 12v8" />
    </svg>
  );
}

export function AddressIcon() {
  return (
    <svg {...ICON_PROPS}>
      <path d="M12 21s7-7.5 7-12a7 7 0 1 0-14 0c0 4.5 7 12 7 12z" />
      <circle cx="12" cy="9" r="2.5" />
    </svg>
  );
}

export function HeartIcon() {
  return (
    <svg {...ICON_PROPS}>
      <path d="M12 20s-7-4.5-9.5-9A5 5 0 0 1 12 6a5 5 0 0 1 9.5 5c-2.5 4.5-9.5 9-9.5 9z" />
    </svg>
  );
}

export function ShieldIcon() {
  return (
    <svg {...ICON_PROPS}>
      <path d="M12 3l7 3v6c0 4.5-3 7.5-7 9-4-1.5-7-4.5-7-9V6l7-3z" />
    </svg>
  );
}