"use client";

import { useState, useEffect } from "react";
import dynamic from "next/dynamic";
import Link from "next/link";
import { signOut } from "next-auth/react";

const MapView = dynamic(() => import("@/components/map/MapView"), {
  ssr: false,
  loading: () => (
    <div className="h-full flex items-center justify-center">
      Loading map...
    </div>
  ),
});

const TIME_FILTERS = [
  { label: "1 Hour", value: 1 },
  { label: "3 Hours", value: 3 },
  { label: "6 Hours", value: 6 },
  { label: "12 Hours", value: 12 },
  { label: "24 Hours", value: 24 },
  { label: "All", value: 0 },
];

interface DeviceInfo {
  id: string;
  name: string;
  color: string;
}

export default function MapPage() {
  const [selectedDevice, setSelectedDevice] = useState<string>("all");
  const [timeFilter, setTimeFilter] = useState<number>(1); // Default 1 hour
  const [isPaused, setIsPaused] = useState(false);
  const [devices, setDevices] = useState<DeviceInfo[]>([]);

  // Custom range state
  const [filterMode, setFilterMode] = useState<"quick" | "custom">("quick");
  const [startTime, setStartTime] = useState<string>("");
  const [endTime, setEndTime] = useState<string>("");

  // Fetch user's devices from API
  useEffect(() => {
    const fetchDevices = async () => {
      try {
        const response = await fetch("/api/devices/public");
        if (response.ok) {
          const data = await response.json();
          setDevices(data.devices || []);
        } else {
          console.error("Failed to fetch devices:", response.status);
        }
      } catch (err) {
        console.error("Failed to fetch devices:", err);
      }
    };

    fetchDevices();
    // Refresh devices every 30 seconds
    const interval = setInterval(fetchDevices, 30000);
    return () => clearInterval(interval);
  }, []);

  return (
    <div className="h-screen flex flex-col bg-gray-50">
      {/* Modern SaaS Header - Compact */}
      <div className="bg-white border-b border-gray-200 shadow-sm">
        <div className="px-4 sm:px-6 py-3">
          {/* Single row with title and controls */}
          <div className="flex flex-col lg:flex-row gap-3 items-stretch lg:items-center">
            {/* Title - left aligned */}
            <h1 className="text-lg sm:text-xl font-semibold text-gray-900 lg:mr-4">Location Tracker</h1>

            {/* Device Filter */}
            <div className="flex items-center gap-2 bg-gray-50 px-3 py-2 rounded-lg border border-gray-200">
              <label className="text-sm font-medium text-gray-700 whitespace-nowrap">Device</label>
              <select
                value={selectedDevice}
                onChange={(e) => setSelectedDevice(e.target.value)}
                className="flex-1 lg:w-44 px-2 py-1.5 text-sm bg-white border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent transition-all"
              >
                <option value="all">All My Devices</option>
                {devices.map((device) => (
                  <option key={device.id} value={device.id}>
                    {device.name}
                  </option>
                ))}
              </select>
            </div>

            {/* Time Filter */}
            <div className="flex items-center gap-2 bg-gray-50 px-3 py-2 rounded-lg border border-gray-200">
              <label className="text-sm font-medium text-gray-700 whitespace-nowrap">Time</label>
              <select
                value={timeFilter}
                onChange={(e) => setTimeFilter(Number(e.target.value))}
                className="flex-1 lg:w-32 px-2 py-1.5 text-sm bg-white border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent transition-all"
              >
                {TIME_FILTERS.map((filter) => (
                  <option key={filter.value} value={filter.value}>
                    {filter.label}
                  </option>
                ))}
              </select>
              <button
                onClick={() => setFilterMode(filterMode === "quick" ? "custom" : "quick")}
                className="inline-flex items-center px-2.5 py-1.5 text-sm font-medium text-gray-700 bg-white border border-gray-300 rounded-md hover:bg-gray-50 hover:border-gray-400 transition-all duration-200"
                title="Toggle Custom Range"
              >
                📅
              </button>
            </div>

            {/* Pause/Resume Button */}
            <button
              onClick={() => setIsPaused(!isPaused)}
              className={`inline-flex items-center justify-center px-4 py-2 text-sm font-medium rounded-lg transition-all duration-200 shadow-sm ${
                isPaused
                  ? "bg-green-600 hover:bg-green-700 text-white border border-green-600 hover:border-green-700"
                  : "bg-red-600 hover:bg-red-700 text-white border border-red-600 hover:border-red-700"
              }`}
            >
              <span className="mr-1.5">{isPaused ? "▶" : "⏸"}</span>
              {isPaused ? "Resume" : "Pause"}
            </button>

            {/* Spacer to push buttons to the right */}
            <div className="hidden lg:block lg:flex-1"></div>

            {/* Export, Admin and Logout Buttons */}
            <div className="flex items-center gap-2">
              <a
                href="/export"
                className="inline-flex items-center px-4 py-2 text-sm font-medium text-gray-700 bg-white border border-gray-300 rounded-lg hover:bg-gray-50 hover:border-gray-400 transition-all duration-200 shadow-sm"
              >
                <span className="mr-1.5">📥</span>
                Export
              </a>
              <a
                href="/admin"
                className="inline-flex items-center px-4 py-2 text-sm font-medium text-white bg-blue-600 border border-blue-600 rounded-lg hover:bg-blue-700 hover:border-blue-700 transition-all duration-200 shadow-sm"
              >
                Admin
              </a>
              <button
                onClick={async () => {
                  await signOut({ redirect: false });
                  window.location.href = '/login';
                }}
                className="inline-flex items-center px-4 py-2 text-sm font-medium text-white bg-gradient-to-r from-red-600 to-red-700 border border-red-600 rounded-lg hover:from-red-700 hover:to-red-800 transition-all duration-200 shadow-md hover:shadow-lg"
              >
                Logout
              </button>
            </div>
          </div>

          {/* Custom Range - Modern Card Style */}
          {filterMode === "custom" && (
            <div className="mt-4 p-4 bg-blue-50 border border-blue-200 rounded-lg">
              <div className="flex flex-col sm:flex-row items-stretch sm:items-center gap-4">
                <div className="flex items-center gap-3 flex-1">
                  <label className="text-sm font-medium text-gray-700 whitespace-nowrap min-w-[60px]">From</label>
                  <input
                    type="datetime-local"
                    value={startTime}
                    onChange={(e) => setStartTime(e.target.value)}
                    className="flex-1 px-3 py-2 text-sm bg-white border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent transition-all"
                  />
                </div>
                <div className="flex items-center gap-3 flex-1">
                  <label className="text-sm font-medium text-gray-700 whitespace-nowrap min-w-[60px]">To</label>
                  <input
                    type="datetime-local"
                    value={endTime}
                    onChange={(e) => setEndTime(e.target.value)}
                    className="flex-1 px-3 py-2 text-sm bg-white border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent transition-all"
                  />
                </div>
              </div>
            </div>
          )}
        </div>
      </div>

      {/* Map */}
      <div className="flex-1">
        <MapView
          selectedDevice={selectedDevice}
          timeFilter={timeFilter}
          isPaused={isPaused}
          filterMode={filterMode}
          startTime={startTime}
          endTime={endTime}
        />
      </div>
    </div>
  );
}