import { useState } from "react";
import {
  BarChart3,
  Clock,
  Film,
  History,
  RefreshCw,
  Users,
  Zap,
  type LucideIcon,
} from "lucide-react";
import { useTranslation } from "react-i18next";
import { type MyStatus } from "../lib/api";
import { formatEta, formatNumber } from "../lib/format";
import { PopoverSurface } from "./ui/AnchoredPopover";
import { useAnchoredPopover } from "./ui/anchoredPopoverHooks";
import { Button } from "./ui/Button";
import { SURFACE } from "./ui/surfaces";

// The channel-manager catalog stats, collapsed from a crowded inline row into a compact "Stats" chip
// that reveals the numbers on hover (reuses the AnchoredPopover hover mode). One row per stat, each
// with a leading icon. Kept in the manager's own toolbar (the header's SyncStatus is global; these
// are channel-catalog figures).
export default function ChannelStatsPopover({ status }: { status: MyStatus }) {
  const { t, i18n } = useTranslation();
  const lang = i18n.language;
  const [open, setOpen] = useState(false);
  const pop = useAnchoredPopover({
    open,
    onOpenChange: setOpen,
    mode: "hover",
    placement: "bottom-end",
    offset: 8,
  });
  const { setReference } = pop.refs;

  // Each row keeps the per-stat explanation the old inline stats carried (as a native `title` on the
  // row), so hovering a figure still tells the user what it counts — the guidance is not lost.
  const rows: { icon: LucideIcon; label: string; value: string | number; hint: string }[] = [
    {
      icon: Users,
      label: t("channels.stats.channels"),
      value: status.channels_total,
      hint: t("channels.stats.channelsHint"),
    },
    {
      icon: RefreshCw,
      label: t("channels.stats.recentSynced"),
      value: `${status.channels_recent_synced}/${status.channels_total}`,
      hint: t("channels.stats.recentSyncedHint"),
    },
    {
      icon: History,
      label: t("channels.stats.fullHistory"),
      value: `${status.channels_deep_done}/${status.channels_deep_requested}`,
      hint: t("channels.stats.fullHistoryHint"),
    },
    ...(status.deep_pending_count > 0
      ? [
          {
            icon: Clock,
            label: t("channels.stats.left"),
            value: formatEta(t, status.deep_eta_seconds),
            hint: t("channels.stats.leftHint", { count: status.deep_pending_count }),
          },
        ]
      : []),
    {
      icon: Film,
      label: t("channels.stats.myVideos"),
      value: formatNumber(status.my_videos, lang),
      hint: t("channels.stats.myVideosHint"),
    },
    {
      icon: Zap,
      label: t("channels.stats.quotaLeft"),
      value: formatNumber(status.quota_remaining_today, lang),
      hint: t("channels.stats.quotaLeftHint"),
    },
  ];

  return (
    <>
      <Button
        variant="glass"
        size="sm"
        icon={<BarChart3 aria-hidden="true" />}
        ref={setReference}
        {...pop.getReferenceProps()}
      >
        {t("channels.stats.label")}
      </Button>
      <PopoverSurface
        popover={pop}
        ariaLabel={t("channels.stats.label")}
        className={`${SURFACE.popover} w-60 p-2 text-xs animate-[popIn_0.16s_ease]`}
      >
        {rows.map((r) => (
          <div
            key={r.label}
            title={r.hint}
            className="flex cursor-help items-center gap-2.5 px-1.5 py-1.5"
          >
            <r.icon className="h-4 w-4 shrink-0 text-muted" aria-hidden="true" />
            <span className="flex-1 text-muted">{r.label}</span>
            <span className="tabular-nums font-medium text-fg">{r.value}</span>
          </div>
        ))}
      </PopoverSurface>
    </>
  );
}