import { formatDistanceToNow } from "date-fns";
import { TrendingUp } from "lucide-react";
import { GradientIcon } from "~/components/ui/GradientIcon";
import { BRACKT_GRADIENT } from "~/lib/brand";

export interface ScoreEventEntry {
  id: string;
  teamId: string;
  teamName: string;
  ownerName: string | null;
  scoringEventId: string | null;
  scoringEventName: string | null;
  sportName: string | null;
  pointsDelta: string;
  occurredAt: Date | string;
  participants: Array<{ id: string; name: string }>;
}

interface RecentScoresCardProps {
  events: ScoreEventEntry[];
}

function TimelineDot({ isRecent }: { isRecent: boolean }) {
  return (
    <div
      suppressHydrationWarning
      className={`relative z-10 mt-1 h-2.5 w-2.5 shrink-0 rounded-full${isRecent ? "" : " border-2 border-border bg-background"}`}
      style={isRecent ? { background: BRACKT_GRADIENT } : undefined}
    />
  );
}

function ScoreRow({
  event,
  isLast,
}: {
  event: ScoreEventEntry;
  isLast: boolean;
}) {
  const pts = parseFloat(event.pointsDelta);
  const displayPts = Number.isInteger(pts) ? pts.toString() : pts.toFixed(1);
  const managerName = event.ownerName ?? event.teamName;
  const isRecent = Date.now() - new Date(event.occurredAt).getTime() < 24 * 60 * 60 * 1000;

  return (
    <div className="flex gap-3 min-w-0">
      {/* Timeline spine */}
      <div className="flex flex-col items-center">
        <TimelineDot isRecent={isRecent} />
        {!isLast && <div className="w-px flex-1 bg-border mt-1" />}
      </div>

      {/* Content row: points box + text */}
      <div className={`flex gap-3 flex-1 min-w-0 ${isLast ? "" : "pb-6"}`}>
        {/* Points box — square, no rounded corners */}
        <div className="shrink-0 w-10 h-10 flex items-center justify-center bg-black text-white font-bold text-sm leading-none self-start">
          +{displayPts}
        </div>

        {/* Text content */}
        <div className="flex flex-col gap-0.5 min-w-0">
          {/* Date */}
          <div className="text-xs text-muted-foreground/60" suppressHydrationWarning>
            {formatDistanceToNow(new Date(event.occurredAt), { addSuffix: true })}
          </div>

          {/* Manager name */}
          <div className="text-sm font-bold text-foreground leading-tight">
            {managerName}
          </div>

          {/* Sport · participant name(s) */}
          <div className="text-xs text-muted-foreground">
            {[
              event.sportName,
              event.participants.length > 0
                ? event.participants.map((p) => p.name).join(", ")
                : null,
            ]
              .filter(Boolean)
              .join(" · ")}
          </div>
        </div>
      </div>
    </div>
  );
}

export function RecentScoresCard({ events }: RecentScoresCardProps) {
  return (
    <div>
      {/* Header */}
      <div className="flex items-center gap-2 mb-6">
        <GradientIcon icon={TrendingUp} className="h-5 w-5 shrink-0" />
        <span className="text-xl font-bold leading-none tracking-tight">Recent Scores</span>
      </div>

      {/* Timeline */}
      {events.length === 0 ? (
        <p className="text-sm text-muted-foreground py-2">
          No recent scores yet — they&apos;ll appear here as events complete.
        </p>
      ) : (
        <div>
          {events.map((event, index) => (
            <ScoreRow
              key={event.id}
              event={event}
              isLast={index === events.length - 1}
            />
          ))}
        </div>
      )}
    </div>
  );
}