export type ShellTheme = "light" | "dark";

export type ShellTranslator = (
  key: string,
  fallback: string,
  vars?: Record<string, string | number>,
) => string;

type ShellSessionStatusParams = {
  expiresAtSec?: number | null;
  nowMs: number;
  t: ShellTranslator;
};

type ShellProfileSummaryParams = {
  profileName?: string | null;
  profileEmail?: string | null;
  fallbackName: string;
  fallbackEmail: string;
};

export const SHELL_THEME_STORAGE_KEY = "admin_theme";
export const SHELL_SESSION_EXPIRY_STORAGE_KEY =
  "baron_session_expiry_enabled";

export const shellLayoutClasses = {
  root: "grid min-h-screen bg-background text-foreground md:grid-cols-[240px,1fr]",
  aside:
    "flex flex-col justify-between border-b border-border bg-card md:sticky md:top-0 md:h-screen md:border-b-0 md:border-r md:bg-card md:backdrop-blur",
  asideStatic:
    "border-b border-border bg-card md:sticky md:top-0 md:h-screen md:border-b-0 md:border-r md:bg-card md:backdrop-blur",
  brandSection:
    "flex items-center justify-between px-5 py-4 md:block md:space-y-6 md:py-6",
  brandWrap: "flex items-center gap-3 md:flex-col md:items-start",
  brandIcon:
    "grid h-11 w-11 place-items-center rounded-xl bg-primary/15 text-primary shadow-[0_12px_30px_rgba(54,211,153,0.22)]",
  scopeBadge:
    "hidden rounded-full border border-border px-3 py-2 text-xs text-muted-foreground md:inline-flex md:items-center md:gap-2",
  navWrap: "px-2 pb-4 md:px-3 md:pb-8",
  navMeta:
    "flex flex-wrap gap-2 px-3 pb-4 text-[11px] text-muted-foreground md:flex-col md:items-start",
  navList: "flex flex-col gap-1",
  navItemBase:
    "flex items-center gap-3 rounded-xl px-3 py-3 text-sm transition",
  navItemActive:
    "bg-primary/10 text-primary shadow-[0_12px_40px_rgba(54,211,153,0.18)]",
  navItemIdle: "text-muted-foreground hover:bg-muted/10 hover:text-foreground",
  sidebarFooterNotice:
    "hidden space-y-2 px-5 pb-6 pt-2 text-xs text-[var(--color-muted)] md:block",
  logoutButton:
    "flex w-full items-center gap-3 rounded-xl px-3 py-3 text-sm text-muted-foreground transition hover:bg-destructive/10 hover:text-destructive",
  header: "sticky top-0 z-20 border-b border-border bg-background/90 backdrop-blur",
  headerElevated:
    "sticky top-0 z-50 border-b border-border bg-background/90 backdrop-blur",
  headerInner: "flex items-center justify-between px-5 py-4 md:px-8",
  headerTitleWrap: "flex flex-col gap-1",
  headerActions: "flex items-center gap-2 text-sm",
  actionButton:
    "inline-flex items-center gap-2 rounded-full border border-border px-3 py-2 text-muted-foreground transition hover:bg-muted/20",
  sessionBadge:
    "hidden rounded-full border px-3 py-2 text-xs font-medium md:inline-flex",
  profileInitial:
    "grid h-8 w-8 place-items-center rounded-full bg-primary/15 text-xs font-semibold text-primary",
  profileMenu:
    "absolute right-0 z-30 mt-2 w-72 rounded-xl border border-border bg-card p-3 shadow-xl",
  profileCard:
    "mt-2 flex flex-col gap-2 rounded-lg border border-border px-3 py-3",
  settingsCard: "mt-2 rounded-lg border border-border px-3 py-3",
  content: "relative",
  contentWide: "relative min-w-0",
  main: "px-5 py-6 md:px-10 md:py-10",
  mainMinWidth: "min-w-0 px-5 py-6 md:px-10 md:py-10",
} as const;

export function readShellTheme(): ShellTheme {
  return window.localStorage.getItem(SHELL_THEME_STORAGE_KEY) === "dark"
    ? "dark"
    : "light";
}

export function applyShellTheme(theme: ShellTheme) {
  const root = document.documentElement;
  root.classList.remove("light", "dark");
  root.classList.add(theme);
  window.localStorage.setItem(SHELL_THEME_STORAGE_KEY, theme);
}

export function readShellSessionExpiryEnabled() {
  return window.localStorage.getItem(SHELL_SESSION_EXPIRY_STORAGE_KEY) !== "false";
}

export function writeShellSessionExpiryEnabled(isEnabled: boolean) {
  window.localStorage.setItem(
    SHELL_SESSION_EXPIRY_STORAGE_KEY,
    String(isEnabled),
  );
}

export function buildShellProfileSummary({
  profileName,
  profileEmail,
  fallbackName,
  fallbackEmail,
}: ShellProfileSummaryParams) {
  const resolvedName = profileName?.trim() || fallbackName;
  const resolvedEmail = profileEmail?.trim() || fallbackEmail;

  return {
    name: resolvedName,
    email: resolvedEmail,
    initial: resolvedName.charAt(0).toUpperCase(),
  };
}

export function buildShellSessionStatus({
  expiresAtSec,
  nowMs,
  t,
}: ShellSessionStatusParams) {
  const remainingMs =
    typeof expiresAtSec === "number" ? expiresAtSec * 1000 - nowMs : null;
  const remainingTotalSec =
    remainingMs !== null ? Math.max(0, Math.floor(remainingMs / 1000)) : null;
  const remainingMinutes =
    remainingTotalSec !== null ? Math.floor(remainingTotalSec / 60) : null;
  const remainingSeconds =
    remainingTotalSec !== null ? remainingTotalSec % 60 : null;

  let toneClass =
    "border-emerald-500/30 bg-emerald-500/10 text-emerald-700 dark:text-emerald-300";
  let text = t("ui.dev.session.active", "세션 활성");

  if (remainingMs === null) {
    toneClass = "border-border bg-card text-muted-foreground";
    text = t("ui.dev.session.unknown", "알 수 없음");
  } else if (remainingMs <= 0) {
    toneClass =
      "border-rose-500/30 bg-rose-500/10 text-rose-700 dark:text-rose-300";
    text = t("ui.dev.session.expired", "세션 만료");
  } else if (
    remainingMinutes !== null &&
    remainingSeconds !== null &&
    remainingMinutes <= 5
  ) {
    toneClass =
      "border-amber-500/30 bg-amber-500/10 text-amber-700 dark:text-amber-300";
    text = t(
      "ui.dev.session.expiring",
      "만료 임박: {{minutes}}분 {{seconds}}초 남음",
      {
        minutes: remainingMinutes,
        seconds: remainingSeconds,
      },
    );
  } else {
    text = t(
      "ui.dev.session.remaining",
      "만료 예정: {{minutes}}분 {{seconds}}초 남음",
      {
        minutes: remainingMinutes ?? 0,
        seconds: remainingSeconds ?? 0,
      },
    );
  }

  return {
    toneClass,
    text,
  };
}