"use client";

import { useState, useEffect } from "react";
import Link from "next/link";
import type { LiveRidesResult, LiveRide } from "@/lib/scrapers/queuetimes";
import { slugifyRideName } from "@/lib/ride-slug";

interface LiveRidePanelProps {
  parkId: string;
  liveRides: LiveRidesResult;
  parkOpenToday: boolean;
  isWeatherDelay?: boolean;
}

export function LiveRidePanel({ parkId, liveRides, parkOpenToday, isWeatherDelay }: LiveRidePanelProps) {
  const { rides } = liveRides;
  const hasCoasters = rides.some((r) => r.isCoaster);
  const hasFastLane = rides.some((r) => r.hasFastLane);
  const [coastersOnly, setCoastersOnly] = useState(false);
  const [fastLaneMode, setFastLaneMode] = useState(false);

  // Pre-select coaster filter if Coaster Mode is enabled on the homepage.
  useEffect(() => {
    if (hasCoasters && localStorage.getItem("coasterMode") === "true") {
      setCoastersOnly(true);
    }
  }, [hasCoasters]);

  // Restore Fast Lane mode from a previous visit.
  useEffect(() => {
    if (hasFastLane && localStorage.getItem("fastLaneMode") === "true") {
      setFastLaneMode(true);
    }
  }, [hasFastLane]);

  const toggleFastLane = () => {
    setFastLaneMode((v) => {
      const next = !v;
      localStorage.setItem("fastLaneMode", String(next));
      return next;
    });
  };

  const visible = coastersOnly ? rides.filter((r) => r.isCoaster) : rides;
  const openRides = visible.filter((r) => r.isOpen);
  const closedRides = visible.filter((r) => !r.isOpen);
  const anyOpen = openRides.length > 0;

  return (
    <div>
      {/* ── Toolbar: summary + coaster toggle ────────────────────────────── */}
      <div style={{
        display: "flex",
        alignItems: "center",
        gap: 10,
        marginBottom: 16,
        flexWrap: "wrap",
      }}>
        {/* Open count badge */}
        {anyOpen ? (
          <div style={{
            background: "var(--color-open-bg)",
            border: "1px solid var(--color-open-border)",
            borderRadius: 20,
            padding: "4px 12px",
            fontSize: "0.72rem",
            fontWeight: 600,
            color: "var(--color-open-hours)",
            flexShrink: 0,
          }}>
            {openRides.length} open
          </div>
        ) : isWeatherDelay ? (
          <div style={{
            background: "var(--color-weather-bg)",
            border: "1px solid var(--color-weather-border)",
            borderRadius: 20,
            padding: "4px 12px",
            fontSize: "0.72rem",
            fontWeight: 600,
            color: "var(--color-weather-text)",
            flexShrink: 0,
          }}>
            ⛈ Weather Delay — all rides currently closed
          </div>
        ) : (
          <div style={{
            background: "var(--color-surface)",
            border: "1px solid var(--color-border)",
            borderRadius: 20,
            padding: "4px 12px",
            fontSize: "0.72rem",
            fontWeight: 500,
            color: "var(--color-text-muted)",
            flexShrink: 0,
          }}>
            {parkOpenToday ? "Not open yet — check back soon" : "No rides open"}
          </div>
        )}

        {/* Closed count badge — always shown when there are closed rides */}
        {closedRides.length > 0 && (
          <div style={{
            background: "var(--color-surface)",
            border: "1px solid var(--color-border)",
            borderRadius: 20,
            padding: "4px 12px",
            fontSize: "0.72rem",
            fontWeight: 500,
            color: "var(--color-text-muted)",
            flexShrink: 0,
          }}>
            {closedRides.length} {anyOpen ? "closed / down" : "rides total"}
          </div>
        )}

        {/* Toggle group — pushed to the right */}
        {(hasCoasters || hasFastLane) && (
          <div style={{ marginLeft: "auto", display: "flex", gap: 8, flexWrap: "wrap" }}>
            {/* Fast Lane toggle — swaps shown waits to Fast Lane numbers */}
            {hasFastLane && (
              <button
                onClick={toggleFastLane}
                style={{
                  display: "flex",
                  alignItems: "center",
                  gap: 5,
                  padding: "4px 12px",
                  borderRadius: 20,
                  border: fastLaneMode
                    ? "1px solid var(--color-accent)"
                    : "1px solid var(--color-border)",
                  background: fastLaneMode
                    ? "var(--color-accent-muted)"
                    : "var(--color-surface)",
                  color: fastLaneMode
                    ? "var(--color-accent)"
                    : "var(--color-text-muted)",
                  fontSize: "0.72rem",
                  fontWeight: 600,
                  cursor: "pointer",
                  transition: "background 150ms ease, border-color 150ms ease, color 150ms ease",
                  whiteSpace: "nowrap",
                }}
              >
                ⚡ Fast Lane
              </button>
            )}

            {/* Coaster toggle — only shown when the park has categorised coasters */}
            {hasCoasters && (
              <button
                onClick={() => setCoastersOnly((v) => !v)}
                style={{
                  display: "flex",
                  alignItems: "center",
                  gap: 5,
                  padding: "4px 12px",
                  borderRadius: 20,
                  border: coastersOnly
                    ? "1px solid var(--color-accent)"
                    : "1px solid var(--color-border)",
                  background: coastersOnly
                    ? "var(--color-accent-muted)"
                    : "var(--color-surface)",
                  color: coastersOnly
                    ? "var(--color-accent)"
                    : "var(--color-text-muted)",
                  fontSize: "0.72rem",
                  fontWeight: 600,
                  cursor: "pointer",
                  transition: "background 150ms ease, border-color 150ms ease, color 150ms ease",
                  whiteSpace: "nowrap",
                }}
              >
                🎢 Coasters only
              </button>
            )}
          </div>
        )}
      </div>

      {/* ── Ride grid ────────────────────────────────────────────────────── */}
      <div style={{
        display: "grid",
        gridTemplateColumns: "repeat(auto-fill, minmax(280px, 1fr))",
        gap: 6,
      }}>
        {openRides.map((ride) => <RideRow key={ride.name} parkId={parkId} ride={ride} fastLaneMode={fastLaneMode} />)}
        {closedRides.map((ride) => <RideRow key={ride.name} parkId={parkId} ride={ride} fastLaneMode={fastLaneMode} />)}
      </div>

    </div>
  );
}

function RideRow({ parkId, ride, fastLaneMode }: { parkId: string; ride: LiveRide; fastLaneMode: boolean }) {
  const showWait = ride.isOpen && ride.waitMinutes > 0;
  const fastLaneActive = fastLaneMode && ride.hasFastLane;
  const flWait = ride.fastLaneMinutes ?? 0;
  const slug = ride.slug ?? slugifyRideName(ride.name);

  return (
    <Link href={`/park/${parkId}/ride/${slug}`} className="ride-row-link" style={{
      display: "flex",
      alignItems: "center",
      justifyContent: "space-between",
      gap: 10,
      padding: "8px 12px",
      background: "var(--color-surface)",
      border: `1px solid ${ride.isOpen ? "var(--color-open-border)" : "var(--color-border)"}`,
      borderRadius: 8,
      opacity: ride.isOpen ? 1 : 0.6,
      textDecoration: "none",
      color: "inherit",
      cursor: "pointer",
    }}>
      <div style={{ display: "flex", alignItems: "center", gap: 8, minWidth: 0 }}>
        <span style={{
          width: 7,
          height: 7,
          borderRadius: "50%",
          background: ride.isOpen ? "var(--color-open-text)" : "var(--color-text-dim)",
          flexShrink: 0,
        }} />
        <span title={ride.name} style={{
          fontSize: "0.8rem",
          color: ride.isOpen ? "var(--color-text)" : "var(--color-text-muted)",
          fontWeight: ride.isOpen ? 500 : 400,
          overflow: "hidden",
          textOverflow: "ellipsis",
          whiteSpace: "nowrap",
        }}>
          {ride.name}
        </span>
      </div>
      {/* Fast Lane mode: swap the shown wait to the Fast Lane number */}
      {fastLaneMode ? (
        ride.isOpen && fastLaneActive ? (
          <span style={{
            fontSize: "0.72rem",
            color: "var(--color-accent)",
            fontWeight: 600,
            flexShrink: 0,
            whiteSpace: "nowrap",
          }}>
            {flWait > 0 ? `⚡ ${flWait} min` : "⚡ walk-on"}
          </span>
        ) : ride.isOpen ? (
          <span style={{
            fontSize: "0.68rem",
            color: "var(--color-text-muted)",
            fontWeight: 500,
            flexShrink: 0,
            opacity: 0.7,
            whiteSpace: "nowrap",
          }}>
            no Fast Lane
          </span>
        ) : null
      ) : (
        <>
          {showWait && (
            <span style={{
              fontSize: "0.72rem",
              color: "var(--color-open-hours)",
              fontWeight: 600,
              flexShrink: 0,
              whiteSpace: "nowrap",
            }}>
              {ride.waitMinutes} min
            </span>
          )}
          {ride.isOpen && !showWait && (
            <span style={{
              fontSize: "0.68rem",
              color: "var(--color-open-text)",
              fontWeight: 500,
              flexShrink: 0,
              opacity: 0.7,
            }}>
              walk-on
            </span>
          )}
        </>
      )}
    </Link>
  );
}