import type { ReactNode } from "react";
import { twClassNames } from "~/ui/utils";
import { Logo } from "~/ui/components/Logo";

type StatusTone = "positive" | "negative" | "neutral";

const STATUS_BADGE: Record<StatusTone, string> = {
  positive: "bg-surface-feedback-subtle-positive",
  negative: "bg-surface-feedback-subtle-negative",
  neutral: "bg-surface-feedback-subtle-neutral",
};
const STATUS_ICON: Record<StatusTone, string> = {
  positive: "text-icon-feedback-positive",
  negative: "text-icon-feedback-negative",
  neutral: "text-icon-neutral-primary",
};

// Gemeinsames Auth-Layout nach Davids Subframe-Auth-Screens (Login/Signup/Reset/2FA/Magic-Link):
// zentriertes Logo (64) + Card (Titel/Untertitel + Inhalt) + optionaler Footer. min-h-screen statt Davids
// h-full (Auth-Routen ohne full-height-Parent). Titel-Ausrichtung + Untertitel-Gewicht variieren je Screen
// in Davids Designs -> als Props (titleAlign/subtitleStrong). twClassNames, damit cardClassName Basis-Tokens
// (gap/shadow) sauber ueberschreibt.

export function AuthShell({
  title,
  subtitle,
  children,
  footer,
  cardClassName = "max-w-[400px]",
  logoIconOnly = false,
  titleAlign = "start",
  subtitleStrong = false,
  dataUiId,
}: {
  title: ReactNode;
  subtitle?: ReactNode;
  children: ReactNode;
  footer?: ReactNode;
  /** Breite/Overrides der Card; Forms = max-w-[400px] (Default). */
  cardClassName?: string;
  /** Icon-only-Logo (wie Davids 2FA-/Status-Screens) statt vollem Wortmarken-Logo. */
  logoIconOnly?: boolean;
  /** Titel-/Untertitel-Ausrichtung. David: Login=center, Signup/Forgot/Reset/2FA=start. */
  titleAlign?: "center" | "start";
  /** Untertitel-Gewicht. David: Forgot/2FA = medium-150, sonst regular-0. */
  subtitleStrong?: boolean;
  dataUiId?: string;
}) {
  return (
    <div
      className="flex min-h-screen w-full flex-col items-center justify-center gap-8 bg-surface-neutral-primary px-4 py-12 mobile:gap-6 mobile:py-6"
      data-ui-id={dataUiId}
    >
      <Logo size="64" showIcon={logoIconOnly || undefined} hideText={logoIconOnly || undefined} />
      <div
        className={twClassNames(
          "flex w-full flex-col items-stretch gap-4 rounded-lg border border-solid border-border-default bg-surface-neutral-secondary px-8 py-8 shadow-sm mobile:px-6",
          cardClassName
        )}
      >
        <div className={twClassNames("flex w-full flex-col gap-1", titleAlign === "center" ? "items-center" : "items-start")}>
          <h1 className="text-heading- font-heading- text-text-neutral-primary">{title}</h1>
          {subtitle ? (
            <p
              className={
                subtitleStrong
                  ? "text-body-small-medium-150 font-body-small-medium-150 text-text-neutral-tertiary"
                  : "text-body-small-regular-0 font-body-small-regular-0 text-text-neutral-tertiary"
              }
            >
              {subtitle}
            </p>
          ) : null}
        </div>
        {children}
      </div>
      {footer ? <div className="flex w-full flex-wrap items-center justify-center gap-2">{footer}</div> : null}
    </div>
  );
}

// Status-Screen nach Davids Auth-Status-Design (Magic-Link Sent/Invalid, Forgot Sent, Reset Success ...):
// volles Logo + Card mit farbigem Icon-Badge + Titel + Nachricht + optionalem Hinweis + Aktionen.
export function AuthStatus({
  icon,
  tone = "neutral",
  title,
  message,
  hint,
  children,
  dataUiId,
}: {
  icon: ReactNode;
  tone?: StatusTone;
  title: ReactNode;
  message: ReactNode;
  hint?: ReactNode;
  /** Aktions-Buttons (vertikal gestapelt, zentriert). */
  children?: ReactNode;
  dataUiId?: string;
}) {
  return (
    <div
      className="flex min-h-screen w-full flex-col items-center justify-center gap-8 bg-surface-neutral-primary px-4 py-12 mobile:gap-6 mobile:py-6"
      data-ui-id={dataUiId}
    >
      <Logo size="64" />
      <div className="flex w-full max-w-[400px] flex-col items-center gap-6 rounded-lg border border-solid border-border-default bg-surface-neutral-secondary px-8 py-8 text-center shadow-sm mobile:px-6">
        <div className={`flex h-12 w-12 flex-none items-center justify-center rounded-round ${STATUS_BADGE[tone]}`}>
          <span className={`text-heading- font-heading- ${STATUS_ICON[tone]}`}>{icon}</span>
        </div>
        <div className="flex w-full flex-col items-center gap-2">
          <h1 className="text-center text-heading- font-heading- text-text-neutral-primary">{title}</h1>
          <p className="text-center text-body-small-medium-150 font-body-small-medium-150 text-text-neutral-tertiary">{message}</p>
          {hint ? (
            <p className="text-center text-body-extra-small-regular-0 font-body-extra-small-regular-0 text-text-neutral-tertiary">{hint}</p>
          ) : null}
        </div>
        {children ? <div className="flex w-full flex-col items-center gap-3">{children}</div> : null}
      </div>
    </div>
  );
}

// Davids "oder"-Trenner zwischen Primär- und Sekundär-Aktion (z.B. Login vs. Magic-Link).
export function AuthDivider({ label }: { label: ReactNode }) {
  return (
    <div className="flex w-full items-center justify-center gap-3">
      <div className="flex h-px grow shrink-0 basis-0 flex-col items-center bg-border-default" />
      <span className="text-body-small-regular-0 font-body-small-regular-0 text-text-neutral-tertiary">{label}</span>
      <div className="flex h-px grow shrink-0 basis-0 flex-col items-center bg-border-default" />
    </div>
  );
}