import { useTranslation } from "react-i18next";
import { Repeat, Repeat1, Shuffle, SkipBack, SkipForward } from "lucide-react";

// Presentational controls for the YouTube modal player (PlayerModal), split out of the god component —
// the sibling of plexPlayerControls.tsx. No state or effects here; all behaviour comes in via props.

// Persistent playback settings (stored in users.preferences). Auto-advance = what plays when a video
// ends; loop = whether it repeats the current video ("one"), wraps the list at its ends ("all"), or
// neither ("off"). Both apply to any queued player (feed or playlist).
export type AutoMode = "off" | "next" | "prev" | "random";
export type LoopMode = "off" | "one" | "all";
export const AUTO_MODES: AutoMode[] = ["off", "next", "prev", "random"];
export const LOOP_MODES: LoopMode[] = ["off", "one", "all"];

/** The queue transport cluster — prev / counter / next, then the auto-advance and loop mode toggles.
 *  Rendered in two places with identical logic: the modal's queue bar (`variant:"modal"`, normal glass
 *  theme, labels always shown) and the big-view docked control bar (`variant:"docked"`, white-on-dark,
 *  labels hidden until a breakpoint). Only the theme + label-visibility differ; the behaviour is one,
 *  so a mode/icon change lands once. The wrapper (fragment vs. bordered row) stays at the call site. */
export function PlayerTransportControls({
  variant,
  index,
  queueLength,
  autoMode,
  loopMode,
  onPrev,
  onNext,
  onCycleAuto,
  onCycleLoop,
}: {
  variant: "docked" | "modal";
  index: number;
  queueLength: number;
  autoMode: AutoMode;
  loopMode: LoopMode;
  onPrev: () => void;
  onNext: () => void;
  onCycleAuto: () => void;
  onCycleLoop: () => void;
}) {
  const { t } = useTranslation();
  const docked = variant === "docked";
  const navBtn = docked
    ? "inline-flex items-center gap-1 text-white/80 enabled:hover:text-white disabled:opacity-30 transition"
    : "inline-flex items-center gap-1.5 text-muted enabled:hover:text-fg disabled:opacity-40 transition";
  const navLabel = docked ? "hidden sm:inline" : "";
  const counter = docked ? "tabular-nums text-white/70" : "text-muted tabular-nums";
  const divider = docked ? "h-4 w-px bg-white/20" : "w-px h-4 bg-border";
  const toggle = (on: boolean) =>
    docked
      ? `inline-flex items-center gap-1 rounded-lg px-2 py-1 transition ${
          on ? "bg-white/20 text-white" : "text-white/70 hover:bg-white/10 hover:text-white"
        }`
      : `inline-flex items-center gap-1.5 rounded-lg px-2.5 py-1 transition ${
          on ? "bg-accent/15 text-accent" : "text-muted hover:bg-surface hover:text-fg"
        }`;
  const toggleLabel = docked ? "hidden md:inline" : "";
  return (
    <>
      <button
        onClick={onPrev}
        disabled={index === 0}
        title={`${t("player.previous")} · Shift+←`}
        className={navBtn}
      >
        <SkipBack className="h-4 w-4" />
        <span className={navLabel}>{t("player.previous")}</span>
      </button>
      <span className={counter}>
        {index + 1} / {queueLength}
      </span>
      <button
        onClick={onNext}
        disabled={index === queueLength - 1}
        title={`${t("player.next")} · Shift+→`}
        className={navBtn}
      >
        <span className={navLabel}>{t("player.next")}</span>
        <SkipForward className="h-4 w-4" />
      </button>
      <span className={divider} />
      {/* Persistent playback settings — cycle on click, saved to your account. */}
      <button
        onClick={onCycleAuto}
        title={t("player.autoAdvance.hint")}
        className={toggle(autoMode !== "off")}
      >
        {autoMode === "prev" ? (
          <SkipBack className="h-3.5 w-3.5" />
        ) : autoMode === "random" ? (
          <Shuffle className="h-3.5 w-3.5" />
        ) : (
          <SkipForward className="h-3.5 w-3.5" />
        )}
        <span className={toggleLabel}>
          {t("player.autoAdvance.label")}: {t(`player.autoAdvance.${autoMode}`)}
        </span>
      </button>
      <button
        onClick={onCycleLoop}
        title={t("player.loop.hint")}
        className={toggle(loopMode !== "off")}
      >
        {loopMode === "one" ? (
          <Repeat1 className="h-3.5 w-3.5" />
        ) : (
          <Repeat className="h-3.5 w-3.5" />
        )}
        <span className={toggleLabel}>
          {t("player.loop.label")}: {t(`player.loop.${loopMode}`)}
        </span>
      </button>
    </>
  );
}